feat(enemy): sistema d'events declaratius via YAML

- Nou enemic STAR amb shape star_5.shp, escala 0.7 i color groc pur.
  Reusa el comportament zigzag del Pentagon i carrega via EnemyRegistry.
- DistribucioEnemics estesa amb camp 'star' opcional (default 0) per
  mantenir compat amb stages antics.
- Stage 1 reconfigurat a 25/25/25/25 per mostrar els 4 tipus.
- Afegits també shapes bullet_long.shp i bullet_double.shp (encara no
  utilitzats; preparats per futures variants de bala).

CMakeLists.txt

@@ -110,7 +110,10 @@ add_executable(pack_resources EXCLUDE_FROM_ALL
     tools/pack_resources/pack_resources.cpp
     source/core/resources/resource_pack.cpp
 )
-target_include_directories(pack_resources PRIVATE "${CMAKE_SOURCE_DIR}/source")
+target_include_directories(pack_resources PRIVATE
+    "${CMAKE_SOURCE_DIR}/source"
+    "${CMAKE_BINARY_DIR}"
+)
 target_compile_options(pack_resources PRIVATE -Wall -Wextra -Wpedantic)
 
 # --- REGENERACIÓ AUTOMÀTICA DE build/resources.pack ---

data/entities/bullet/bullet.yaml

@@ -0,0 +1,22 @@
+name: bullet
+
+# Shape de la bala. El bounding_radius del .shp dóna el hitbox base (~3 px);
+# scale el modula visualment i pel hitbox.
+shape:
+  path: bullet.shp
+  scale: 1.0
+  collision_factor: 1.0
+
+# Cinemàtica pura: la bala no col·lisiona físicament al PhysicsWorld
+# (body_.radius = 0 al spawn), però sí participa al gameplay via
+# checkCollisionSwept. La mass i l'impact_momentum_factor es fan servir
+# només per calcular l'impuls que rep l'enemic en impactar.
+physics:
+  mass: 0.5
+  restitution: 0.0           # irrelevant (no rebota)
+  linear_damping: 0.0        # movement rectilini uniforme
+  angular_damping: 0.0
+  impact_momentum_factor: 3.0  # factor de transferència de moment bala→enemic
+
+colors:
+  normal: [155, 255, 175]    # verd laser

data/entities/pentagon/pentagon.yaml

@@ -0,0 +1,68 @@
+name: pentagon
+ai_type: pentagon          # Validat contra el directori; mapeja a EnemyType::PENTAGON.
+
+shape:
+  path: enemy_pentagon.shp
+  scale: 1.0               # multiplicador visual + hitbox sobre la mida nativa del .shp
+  collision_factor: 1.0    # ajust opcional del hitbox (default 1.0)
+
+physics:
+  mass: 5.0
+  speed: 35.0               # px/s (esquivador lent)
+  rotation_delta_min: 0.75  # rad/s — rotació visual mínima
+  rotation_delta_max: 3.75  # rad/s — rotació visual màxima
+  restitution: 1.0          # rebot elàstic perfecte contra parets
+  linear_damping: 0.0       # manté velocitat (sense fricció)
+  angular_damping: 0.0
+
+behavior:
+  # Pentagon: zigzag esquivador (canvi de direcció probabilístic per segon).
+  angle_change_max: 1.0     # rad — magnitud del canvi de direcció
+  zigzag_prob_per_second: 0.8
+
+animation:
+  pulse:                    # respiració d'escala aleatòria
+    trigger_prob_per_second: 0.01
+    duration_min: 1.0
+    duration_max: 3.0
+    amplitude_min: 0.08
+    amplitude_max: 0.20
+    frequency_min: 1.5
+    frequency_max: 3.0
+  rotation_accel:           # acceleració/desacceleració de rotació visual
+    trigger_prob_per_second: 0.02
+    duration_min: 3.0
+    duration_max: 8.0
+    multiplier_min: 0.3
+    multiplier_max: 4.0
+
+wounded:
+  duration: 1.0             # segons en estat ferit abans d'explotar
+  blink_hz: 10.0            # parpelleig color normal ↔ wounded
+
+spawn:
+  invulnerability_duration: 3.0
+  invulnerability_brightness_start: 0.3
+  invulnerability_brightness_end: 0.7
+  invulnerability_scale_start: 0.0
+  invulnerability_scale_end: 1.0
+  safety_distance: 36.0     # px mínim respecte al player al spawn
+
+colors:
+  normal:  [0, 255, 255]    # Cyan pur "esquivador"
+  wounded: [255, 220, 60]   # Daurat (parpelleig al rebre impacte)
+
+score: 100
+
+events:
+  # Comportament clàssic: dos impactes per matar (set_hurt entra wounded;
+  # el segon hit detecta wounded i destrueix automàticament).
+  on_hit:
+    - action: apply_impulse
+    - action: set_hurt
+  on_hurt_end:
+    - action: destroy
+  on_destroy:
+    - action: add_score
+    - action: create_debris
+    - action: create_fireworks

data/entities/pinwheel/pinwheel.yaml

@@ -0,0 +1,66 @@
+name: pinwheel
+ai_type: pinwheel          # Validat contra el directori; mapeja a EnemyType::PINWHEEL.
+
+shape:
+  path: enemy_pinwheel.shp
+  scale: 1.0               # multiplicador visual + hitbox sobre la mida nativa del .shp
+  collision_factor: 1.0    # ajust opcional del hitbox (default 1.0)
+
+physics:
+  mass: 4.0                 # Més lleuger — àgil
+  speed: 50.0               # px/s (el més ràpid)
+  rotation_delta_min: 3.0   # rad/s — rotació base elevada
+  rotation_delta_max: 6.0
+  restitution: 1.0
+  linear_damping: 0.0
+  angular_damping: 0.0
+
+behavior:
+  # Pinwheel: movement rectilíniauniforme + boost de rotació visual prop de la nau.
+  rotation_proximity_multiplier: 3.0   # Multiplicador de rotació quan és prop de la nau
+  proximity_distance: 100.0            # Llindar de distància (px)
+
+animation:
+  pulse:
+    trigger_prob_per_second: 0.01
+    duration_min: 1.0
+    duration_max: 3.0
+    amplitude_min: 0.08
+    amplitude_max: 0.20
+    frequency_min: 1.5
+    frequency_max: 3.0
+  rotation_accel:
+    trigger_prob_per_second: 0.02
+    duration_min: 3.0
+    duration_max: 8.0
+    multiplier_min: 0.3
+    multiplier_max: 4.0
+
+wounded:
+  duration: 1.0
+  blink_hz: 10.0
+
+spawn:
+  invulnerability_duration: 3.0
+  invulnerability_brightness_start: 0.3
+  invulnerability_brightness_end: 0.7
+  invulnerability_scale_start: 0.0
+  invulnerability_scale_end: 1.0
+  safety_distance: 36.0
+
+colors:
+  normal:  [255, 0, 255]    # Magenta pur "agressiu"
+  wounded: [255, 220, 60]
+
+score: 200
+
+events:
+  on_hit:
+    - action: apply_impulse
+    - action: set_hurt
+  on_hurt_end:
+    - action: destroy
+  on_destroy:
+    - action: add_score
+    - action: create_debris
+    - action: create_fireworks

data/entities/player/player.yaml

@@ -0,0 +1,49 @@
+name: player_ship
+
+# Shape de la nau. Resolt per ShapeLoader (busca a "shapes/<path>").
+# Nota: el segon jugador rep un override del shape ("ship2.shp") al ctor.
+# Quan s'introdueixin variants reals de nau, es crearà un YAML separat
+# per cada model.
+#
+# scale: multiplicador visual i de hitbox sobre la mida nativa del .shp (1.0 = mida del fitxer).
+# collision_factor: ajust opcional del hitbox respecte el cercle circumscrit
+#                   automàtic de la shape; tocar només si el feel del hitbox
+#                   no quadra amb la silueta visual (default 1.0).
+shape:
+  path: ship.shp
+  scale: 1.0
+  collision_factor: 1.0
+
+physics:
+  mass: 10.0
+  restitution: 0.6
+  linear_damping: 1.5
+  angular_damping: 0.0
+  rotation_speed: 3.14   # rad/s (~180 deg/s, input-driven sense inercia)
+  acceleration: 400.0    # px/s^2 multiplicat per la massa quan THRUST
+  max_velocity: 180.0    # px/s (clamp post-integració per preservar feel arcade)
+  # Factor de transferència del moment lineal de la nau a l'enemic en el
+  # frame exacte que mor per col·lisió (afegit per damunt del rebot natural).
+  death_impact_factor: 0.3
+
+invulnerability:
+  duration: 3.0          # segons d'invulnerabilitat post-respawn
+  blink_visible: 0.1     # segons visible per cicle de parpelleig
+  blink_invisible: 0.1   # segons invisible per cicle de parpelleig
+
+hurt:
+  duration: 15.0         # segons en estat "ferit" abans de tornar a normal
+  blink_hz: 10.0         # freqüència parpelleig color normal <-> color hurt
+
+# Empenta visual: la nau s'escala lleugerament amb la velocitat.
+# Manté la sensació del Pascal original (0..MAX_VEL → 1.0..~1.5).
+visual_thrust:
+  push_divisor: 33.33
+  scale_divisor: 12.0
+
+colors:
+  normal: [255, 255, 255]  # blanc neutre
+  hurt:   [255, 220, 60]   # daurat (estat ferit)
+
+weapon:
+  bullet_speed: 700.0      # velocitat escalar de la bullet (px/s)

data/entities/square/square.yaml

@@ -0,0 +1,66 @@
+name: square
+ai_type: square            # Validat contra el directori; mapeja a EnemyType::SQUARE.
+
+shape:
+  path: enemy_square.shp
+  scale: 1.0               # multiplicador visual + hitbox sobre la mida nativa del .shp
+  collision_factor: 1.0    # ajust opcional del hitbox (default 1.0)
+
+physics:
+  mass: 8.0                 # Més pesat — "tanc"
+  speed: 40.0               # px/s (velocitat mitjana)
+  rotation_delta_min: 0.3   # rad/s — rotació lenta
+  rotation_delta_max: 1.5
+  restitution: 1.0
+  linear_damping: 0.0
+  angular_damping: 0.0
+
+behavior:
+  # Square: tracking discret cap a la nau cada N segons.
+  tracking_strength: 0.5    # Interpolació LERP cap a la direcció desitjada (0..1)
+  tracking_interval: 1.0    # segons entre updates d'angle
+
+animation:
+  pulse:
+    trigger_prob_per_second: 0.01
+    duration_min: 1.0
+    duration_max: 3.0
+    amplitude_min: 0.08
+    amplitude_max: 0.20
+    frequency_min: 1.5
+    frequency_max: 3.0
+  rotation_accel:
+    trigger_prob_per_second: 0.02
+    duration_min: 3.0
+    duration_max: 8.0
+    multiplier_min: 0.3
+    multiplier_max: 4.0
+
+wounded:
+  duration: 1.0
+  blink_hz: 10.0
+
+spawn:
+  invulnerability_duration: 3.0
+  invulnerability_brightness_start: 0.3
+  invulnerability_brightness_end: 0.7
+  invulnerability_scale_start: 0.0
+  invulnerability_scale_end: 1.0
+  safety_distance: 36.0
+
+colors:
+  normal:  [255, 0, 0]      # Roig pur "tanc"
+  wounded: [255, 220, 60]
+
+score: 150
+
+events:
+  on_hit:
+    - action: apply_impulse
+    - action: set_hurt
+  on_hurt_end:
+    - action: destroy
+  on_destroy:
+    - action: add_score
+    - action: create_debris
+    - action: create_fireworks

data/entities/star/star.yaml

@@ -0,0 +1,65 @@
+name: star
+ai_type: star              # Validat contra el directori; mapeja a EnemyType::STAR.
+
+shape:
+  path: star_5.shp
+  scale: 0.7               # Lleugerament més petit que els altres enemics per diferenciar visualment.
+  collision_factor: 1.0
+
+physics:
+  mass: 5.0
+  speed: 35.0               # Mateixos paràmetres que pentagon (esquivador lent).
+  rotation_delta_min: 0.75
+  rotation_delta_max: 3.75
+  restitution: 1.0
+  linear_damping: 0.0
+  angular_damping: 0.0
+
+behavior:
+  # Hereta el comportament de Pentagon (zigzag esquivador).
+  angle_change_max: 1.0
+  zigzag_prob_per_second: 0.8
+
+animation:
+  pulse:
+    trigger_prob_per_second: 0.01
+    duration_min: 1.0
+    duration_max: 3.0
+    amplitude_min: 0.08
+    amplitude_max: 0.20
+    frequency_min: 1.5
+    frequency_max: 3.0
+  rotation_accel:
+    trigger_prob_per_second: 0.02
+    duration_min: 3.0
+    duration_max: 8.0
+    multiplier_min: 0.3
+    multiplier_max: 4.0
+
+wounded:
+  duration: 1.0
+  blink_hz: 10.0
+
+spawn:
+  invulnerability_duration: 3.0
+  invulnerability_brightness_start: 0.3
+  invulnerability_brightness_end: 0.7
+  invulnerability_scale_start: 0.0
+  invulnerability_scale_end: 1.0
+  safety_distance: 36.0
+
+colors:
+  normal:  [255, 255, 0]    # Groc estrella
+  wounded: [255, 220, 60]
+
+score: 100
+
+events:
+  # STAR: mor al primer impacte, sense passar per wounded.
+  on_hit:
+    - action: apply_impulse
+    - action: destroy
+  on_destroy:
+    - action: add_score
+    - action: create_debris
+    - action: create_fireworks

data/shapes/bullet_double.shp

@@ -0,0 +1,17 @@
+# bullet_double.shp - Bala anular (dos cercles concèntrics)
+# © 2026 JailDesigner
+#
+# Dos octàgons concèntrics al centre (0,0):
+#   - Exterior: radi 4 (lleugerament més gran que la bala estàndard, radi 3)
+#   - Interior: radi 2 (lleugerament més petit que la bala estàndard)
+# Aspecte d'anell / aura de plasma. Bounding radius natiu = 4.
+
+name: bullet_double
+scale: 1.0
+center: 0, 0
+
+# Cercle exterior (octàgon, radi 4)
+polyline: 0,-4  2.83,-2.83  4,0  2.83,2.83  0,4  -2.83,2.83  -4,0  -2.83,-2.83  0,-4
+
+# Cercle interior (octàgon, radi 2)
+polyline: 0,-2  1.41,-1.41  2,0  1.41,1.41  0,2  -1.41,1.41  -2,0  -1.41,-1.41  0,-2

data/shapes/bullet_long.shp

@@ -0,0 +1,28 @@
+# bullet_long.shp - Bala allargada (dos octàgons tangents + tapes superior i inferior)
+# © 2026 JailDesigner
+#
+# Dos cercles (octàgons radi 3) tangents externament al punt (0,0), units
+# per una línia horitzontal superior i una d'inferior. La silueta resultant
+# és una càpsula amb la separació visible dels dos cercles al centre.
+#
+# Geometria:
+#   Centre octàgon esquerre: (-3, 0)
+#   Centre octàgon dret:     ( 3, 0)
+#   Punt de tangència:       ( 0, 0)
+#   Bounding radius natiu ≈ 6 (extrem horitzontal a x=±6).
+
+name: bullet_long
+scale: 1.0
+center: 0, 0
+
+# Octàgon esquerre (centre x=-3, radi 3)
+polyline: -3,-3  -0.88,-2.12  0,0  -0.88,2.12  -3,3  -5.12,2.12  -6,0  -5.12,-2.12  -3,-3
+
+# Octàgon dret (centre x=3, radi 3)
+polyline: 3,-3  5.12,-2.12  6,0  5.12,2.12  3,3  0.88,2.12  0,0  0.88,-2.12  3,-3
+
+# Tapa superior: uneix el cim de l'octàgon esquerre amb el del dret
+polyline: -3,-3  3,-3
+
+# Tapa inferior: uneix la base de l'octàgon esquerre amb la del dret
+polyline: -3,3  3,3

data/shapes/star_5.shp

@@ -0,0 +1,15 @@
+# star_5.shp - ORNI enemic (estrella de 5 puntes, només perímetre)
+# © 2026 JailDesigner
+#
+# Pentagrama clàssic: 5 vèrtexs exteriors (radi 20) alternant amb 5 vèrtexs
+# interiors (radi 7.64 = 20/φ² ≈ proporció àuria) per donar puntes esveltes.
+# Vèrtex apuntant amunt (igual que enemy_pentagon).
+#
+# Sense línies interiors: una única polyline que recorre el perímetre.
+# Bounding radius natiu ≈ 20 (alineat amb pentagon/square/pinwheel).
+
+name: star_5
+scale: 1.0
+center: 0, 0
+
+polyline: 0,-20  4.49,-6.18  19.02,-6.18  7.27,2.36  11.76,16.18  0,7.64  -11.76,16.18  -7.27,2.36  -19.02,-6.18  -4.49,-6.18  0,-20

data/stages/stages.yaml

@@ -7,7 +7,7 @@ metadata:
   description: "Progressive difficulty curve from novice to expert"
 
 stages:
-  # STAGE 1: Tutorial - Mix de tots els tipus, velocitat lenta
+  # STAGE 1: Tutorial - Mix de tots 4 tipus al 25% per mostrar-los junts
   - stage_id: 1
     total_enemies: 50
     spawn_config:
@@ -15,9 +15,10 @@ stages:
       initial_delay: 0.3
       spawn_interval: 0.4
     enemy_distribution:
-      pentagon: 34
-      cuadrado: 33
-      molinillo: 33
+      pentagon: 25
+      cuadrado: 25
+      molinillo: 25
+      star: 25
     difficulty_multipliers:
       speed_multiplier: 0.7
       rotation_multiplier: 0.8

source/core/defaults.hpp

@@ -25,7 +25,6 @@
 #include "core/defaults/physics.hpp"
 #include "core/defaults/playfield.hpp"
 #include "core/defaults/rendering.hpp"
-#include "core/defaults/ship.hpp"
 #include "core/defaults/starfield_parallax.hpp"
 #include "core/defaults/title.hpp"
 #include "core/defaults/trail.hpp"

source/core/defaults/enemies.hpp

@@ -1,101 +1,18 @@
-// enemies.hpp - Configuració per tipus d'enemic (Pentagon/Square/Molinillo), spawn i scoring
+// enemies.hpp - Constants tècniques compartides per al sistema d'enemics.
 // © 2026 JailDesigner
+//
+// Tots els paràmetres jugables (physics, animation, wounded, spawn,
+// behavior, colors, scoring) viuen a data/entities/<type>/<type>.yaml i
+// s'accedeixen via EnemyRegistry::get(EnemyType). Aquí només queda el
+// que no és per personalitzar per tipus.
 
 #pragma once
 
-#include "core/defaults/entities.hpp"
+namespace Defaults::Enemies::Spawn {
 
-namespace Defaults::Enemies {
+    // Sostre de reintents al cercar una posició de spawn que respecti el
+    // safety_distance del tipus. No és un paràmetre jugable: és el llindar
+    // tècnic abans de caure a un fallback aleatori amb advertència.
+    constexpr int MAX_SPAWN_ATTEMPTS = 50;
 
-    // Cuerpo físico común (valores por defecto del constructor)
-    namespace Body {
-        constexpr float DEFAULT_MASS = 5.0F;    // Más liviano que la nave (10.0)
-        constexpr float RESTITUTION = 1.0F;     // Rebote elástico perfecto contra paredes
-        constexpr float LINEAR_DAMPING = 0.0F;  // Sin fricción: mantienen velocidad
-        constexpr float ANGULAR_DAMPING = 0.0F;
-    }  // namespace Body
-
-    // Pentagon (esquivador - zigzag evasion)
-    namespace Pentagon {
-        constexpr float SPEED = 35.0F;                  // px/s (slightly slower)
-        constexpr float MASS = 5.0F;                    // Masa estándar
-        constexpr float ANGLE_CHANGE_PROB = 0.20F;      // 20% per wall hit (frequent zigzag)
-        constexpr float ANGLE_CHANGE_MAX = 1.0F;        // Max random angle change (rad)
-        constexpr float ZIGZAG_PROB_PER_SECOND = 0.8F;  // Probabilidad de zigzag por segundo
-        constexpr float ROTATION_DELTA_MIN = 0.75F;     // Min visual rotation (rad/s) [+50%]
-        constexpr float ROTATION_DELTA_MAX = 3.75F;     // Max visual rotation (rad/s) [+50%]
-        constexpr const char* SHAPE_FILE = "enemy_pentagon.shp";
-    }  // namespace Pentagon
-
-    // Square (perseguidor - tracks player)
-    namespace Square {
-        constexpr float SPEED = 40.0F;              // px/s (medium speed)
-        constexpr float MASS = 8.0F;                // Más pesado, "tanque"
-        constexpr float TRACKING_STRENGTH = 0.5F;   // Interpolation toward player (0.0-1.0)
-        constexpr float TRACKING_INTERVAL = 1.0F;   // Seconds between angle updates
-        constexpr float ROTATION_DELTA_MIN = 0.3F;  // Slow rotation [+50%]
-        constexpr float ROTATION_DELTA_MAX = 1.5F;  // [+50%]
-        constexpr const char* SHAPE_FILE = "enemy_square.shp";
-    }  // namespace Square
-
-    // Molinillo (agressiu - fast straight lines, proximity spin-up)
-    namespace Pinwheel {
-        constexpr float SPEED = 50.0F;                               // px/s (fastest)
-        constexpr float MASS = 4.0F;                                 // Más liviano, ágil
-        constexpr float ANGLE_CHANGE_PROB = 0.05F;                   // 5% per wall hit (rare direction change)
-        constexpr float ANGLE_CHANGE_MAX = 0.3F;                     // Small angle adjustments
-        constexpr float ROTATION_DELTA_MIN = 3.0F;                   // Base rotation (rad/s) [+50%]
-        constexpr float ROTATION_DELTA_MAX = 6.0F;                   // [+50%]
-        constexpr float ROTATION_DELTA_PROXIMITY_MULTIPLIER = 3.0F;  // Spin-up multiplier when near ship
-        constexpr float PROXIMITY_DISTANCE = 100.0F;                 // Distance threshold (px)
-        constexpr const char* SHAPE_FILE = "enemy_pinwheel.shp";
-    }  // namespace Pinwheel
-
-    // Animation parameters (shared)
-    namespace Animation {
-        // Palpitation
-        constexpr float PULSE_TRIGGER_PROB = 0.01F;  // 1% chance per second
-        constexpr float PULSE_DURATION_MIN = 1.0F;   // Min duration (seconds)
-        constexpr float PULSE_DURATION_MAX = 3.0F;   // Max duration (seconds)
-        constexpr float PULSE_AMPLITUD_MIN = 0.08F;  // Min scale variation
-        constexpr float PULSE_AMPLITUD_MAX = 0.20F;  // Max scale variation
-        constexpr float PULSE_FREQ_MIN = 1.5F;       // Min frequency (Hz)
-        constexpr float PULSE_FREQ_MAX = 3.0F;       // Max frequency (Hz)
-
-        // Rotation acceleration
-        constexpr float ROTATION_ACCEL_TRIGGER_PROB = 0.02F;   // 2% chance per second [4x more frequent]
-        constexpr float ROTATION_ACCEL_DURATION_MIN = 3.0F;    // Min transition time
-        constexpr float ROTATION_ACCEL_DURATION_MAX = 8.0F;    // Max transition time
-        constexpr float ROTATION_ACCEL_MULTIPLIER_MIN = 0.3F;  // Min speed multiplier [more dramatic]
-        constexpr float ROTATION_ACCEL_MULTIPLIER_MAX = 4.0F;  // Max speed multiplier [more dramatic]
-    }  // namespace Animation
-
-    // Wounded state (entre primer impacto y explosión)
-    namespace Wounded {
-        constexpr float DURATION = 1.0F;   // Segundos en estado herido antes de explotar
-        constexpr float BLINK_HZ = 10.0F;  // Frecuencia de parpadeo color tipo ↔ dorado
-    }  // namespace Wounded
-
-    // Spawn safety and invulnerability system
-    namespace Spawn {
-        // Safe spawn distance from player
-        constexpr float SAFETY_DISTANCE_MULTIPLIER = 3.0F;                                               // 3x ship radius
-        constexpr float SAFETY_DISTANCE = Defaults::Entities::SHIP_RADIUS * SAFETY_DISTANCE_MULTIPLIER;  // 36.0f px
-        constexpr int MAX_SPAWN_ATTEMPTS = 50;                                                           // Max attempts to find safe position
-
-        // Invulnerability system
-        constexpr float INVULNERABILITY_DURATION = 3.0F;          // Seconds
-        constexpr float INVULNERABILITY_BRIGHTNESS_START = 0.3F;  // Dim
-        constexpr float INVULNERABILITY_BRIGHTNESS_END = 0.7F;    // Normal (same as Defaults::Brightness::ENEMIC)
-        constexpr float INVULNERABILITY_SCALE_START = 0.0F;       // Invisible
-        constexpr float INVULNERABILITY_SCALE_END = 1.0F;         // Full size
-    }  // namespace Spawn
-
-    // Scoring system (puntuación per type de enemy)
-    namespace Scoring {
-        constexpr int PENTAGON_SCORE = 100;  // Pentágono (esquivador, 35 px/s)
-        constexpr int SQUARE_SCORE = 150;    // Square (perseguidor, 40 px/s)
-        constexpr int PINWHEEL_SCORE = 200;  // Molinillo (agressiu, 50 px/s)
-    }  // namespace Scoring
-
-}  // namespace Defaults::Enemies
+}  // namespace Defaults::Enemies::Spawn

source/core/defaults/entities.hpp

@@ -8,8 +8,9 @@ namespace Defaults::Entities {
     constexpr int MAX_ORNIS = 15;
     constexpr int MAX_BULLETS = 50;
 
-    constexpr float SHIP_RADIUS = 12.0F;
-    constexpr float ENEMY_RADIUS = 20.0F;
-    constexpr float BULLET_RADIUS = 3.0F;
+    // SHIP_RADIUS / ENEMY_RADIUS / BULLET_RADIUS han migrat: ara cada entitat
+    // calcula el seu collision_radius com a
+    //   shape.bounding_radius × shape.scale × shape.collision_factor
+    // a partir del seu YAML (data/entities/<name>/<name>.yaml).
 
 }  // namespace Defaults::Entities

source/core/defaults/game.hpp

@@ -29,7 +29,7 @@ namespace Defaults::Game {
     // Friendly fire system
     constexpr bool FRIENDLY_FIRE_ENABLED = true;               // Activar friendly fire
     constexpr float COLLISION_BULLET_PLAYER_AMPLIFIER = 1.0F;  // Hitbox exacto (100%)
-    constexpr float BULLET_SPEED = 700.0F;                     // Velocidad escalar (px/s). Pascal: 7 px/frame × 20 FPS
+    // BULLET_SPEED migrat a data/entities/player/player.yaml (weapon.bullet_speed).
 
     // Transición LEVEL_START (mensajes aleatorios PRE-level)
     constexpr float LEVEL_START_DURATION = 3.0F;      // Duración total

source/core/defaults/palette.hpp

@@ -14,11 +14,10 @@ namespace Defaults::Palette {
     // brillantor perceptual sota el bloom (sense alterar la identitat de color).
     // El canal dominant es manté a 255 a cada color per maximitzar la saturació
     // visible quan el halo s'expandeix.
-    constexpr SDL_Color SHIP = {.r = 255, .g = 255, .b = 255, .a = 255};    // Blanco neutro
-    constexpr SDL_Color BULLET = {.r = 155, .g = 255, .b = 175, .a = 255};  // Verde laser
-    constexpr SDL_Color PENTAGON = {.r = 0, .g = 255, .b = 255, .a = 255};  // Cyan pur "esquivador"
-    constexpr SDL_Color SQUARE = {.r = 255, .g = 0, .b = 0, .a = 255};      // Roig pur "tank"
-    constexpr SDL_Color PINWHEEL = {.r = 255, .g = 0, .b = 255, .a = 255};  // Magenta pur "agressiu"
-    constexpr SDL_Color WOUNDED = {.r = 255, .g = 220, .b = 60, .a = 255};  // Dorado: enemigo herido
+    // Tots els colors d'entitats han migrat al seu YAML respectiu
+    // (data/entities/<name>/<name>.yaml, secció `colors`):
+    //  - SHIP → player.yaml
+    //  - PENTAGON / SQUARE / PINWHEEL / WOUNDED → cada enemy.yaml
+    //  - BULLET → bullet.yaml
 
 }  // namespace Defaults::Palette

source/core/defaults/physics.hpp

@@ -3,72 +3,55 @@
 
 #pragma once
 
-namespace Defaults::Physics {
+// NOTA: els paràmetres del player (rotation_speed, acceleration,
+// max_velocity, death_impact_factor) viuen a data/entities/player/player.yaml.
+// Els paràmetres específics de la bala (mass, restitution, damping,
+// impact_momentum_factor) viuen a data/entities/bullet/bullet.yaml.
+// Aquest fitxer només conté els paràmetres compartits del subsistema de
+// debris (explosions visuals).
 
-    constexpr float ROTATION_SPEED = 3.14F;  // rad/s (~180°/s)
-    constexpr float ACCELERATION = 400.0F;   // px/s²
-    constexpr float MAX_VELOCITY = 180.0F;   // px/s
-    constexpr float FRICTION = 20.0F;        // px/s²
+namespace Defaults::Physics::Debris {
 
-    // Bullet — impacto físico contra enemigo (impulse mass-aware).
-    // Model: el impulse és el moment lineal de la bala (m·v) multiplicat per
-    // un factor de transferència [0..1]. 1.0 = transfereix tot el moment
-    // (col·lisió perfectament inelàstica), 0.5 = transfereix la meitat.
-    namespace Bullet {
-        constexpr float IMPACT_MOMENTUM_FACTOR = 3.0F;  // Factor de transferència de moment bala→enemic
-    }  // namespace Bullet
+    constexpr float SPEED_BASE = 80.0F;      // Velocidad inicial (px/s)
+    constexpr float VARIACIO_SPEED = 40.0F;  // ±variació aleatòria (px/s)
+    constexpr float ACCELERACIO = -60.0F;    // Fricció/desacceleració (px/s²)
+    constexpr float ROTATION_MIN = 0.1F;     // Rotación mínima (rad/s ~5.7°/s)
+    constexpr float ROTATION_MAX = 0.3F;     // Rotación màxima (rad/s ~17.2°/s)
+    constexpr float TEMPS_VIDA = 2.0F;       // Vida mínima garantida (s) — després pot morir per velocitat baixa
+    constexpr float TEMPS_VIDA_NAU = 3.0F;   // Ship debris min lifetime (matches DEATH_DURATION)
+    constexpr float SHRINK_RATE = 1.0F;      // Reducció de mida (1.0 = encoge a 0 al final del min_lifetime)
 
-    // Ship → enemy: impuls explícit aplicat a l'enemic en el moment exacte
-    // que la nau mor per col·lisió amb ell (afegit per damunt del rebot
-    // natural de PhysicsWorld, que ja és present però subtil amb la
-    // damping de la nau).
-    namespace Ship {
-        constexpr float DEATH_IMPACT_MOMENTUM_FACTOR = 0.3F;
-    }  // namespace Ship
+    // Política de mort: passat el min_lifetime, el fragment mor quan la
+    // seva velocity cau per sota d'aquest llindar. Així els fragments
+    // ràpids no "popen" en moviment.
+    constexpr float MIN_SPEED_TO_DIE = 5.0F;  // px/s — al cuadrat per evitar sqrt en update
+    constexpr float MIN_SPEED_TO_DIE_SQ = MIN_SPEED_TO_DIE * MIN_SPEED_TO_DIE;
 
-    // Explosions (debris physics)
-    namespace Debris {
-        constexpr float SPEED_BASE = 80.0F;      // Velocidad inicial (px/s)
-        constexpr float VARIACIO_SPEED = 40.0F;  // ±variació aleatòria (px/s)
-        constexpr float ACCELERACIO = -60.0F;    // Fricció/desacceleració (px/s²)
-        constexpr float ROTATION_MIN = 0.1F;     // Rotación mínima (rad/s ~5.7°/s)
-        constexpr float ROTATION_MAX = 0.3F;     // Rotación màxima (rad/s ~17.2°/s)
-        constexpr float TEMPS_VIDA = 2.0F;       // Vida mínima garantida (s) — després pot morir per velocitat baixa
-        constexpr float TEMPS_VIDA_NAU = 3.0F;   // Ship debris min lifetime (matches DEATH_DURATION)
-        constexpr float SHRINK_RATE = 1.0F;      // Reducció de mida (1.0 = encoge a 0 al final del min_lifetime)
+    // Rebot contra els límits del PLAYAREA (mateix patró que enemics/ship).
+    // 0.7 = 70% de l'energia conservada al rebot.
+    constexpr float RESTITUTION_BOUNDS = 0.7F;
 
-        // Política de mort: passat el min_lifetime, el fragment mor quan la
-        // seva velocity cau per sota d'aquest llindar. Així els fragments
-        // ràpids no "popen" en moviment.
-        constexpr float MIN_SPEED_TO_DIE = 5.0F;  // px/s — al cuadrat per evitar sqrt en update
-        constexpr float MIN_SPEED_TO_DIE_SQ = MIN_SPEED_TO_DIE * MIN_SPEED_TO_DIE;
+    // Herència de velocity angular (trayectorias curvas)
+    constexpr float INHERITANCE_FACTOR_MIN = 0.7F;  // Mínimo 70% del drotacio heredat
+    constexpr float INHERITANCE_FACTOR_MAX = 1.0F;  // Màxim 100% del drotacio heredat
+    constexpr float FRICCIO_ANGULAR = 0.5F;         // Desacceleració angular (rad/s²)
 
-        // Rebot contra els límits del PLAYAREA (mateix patró que enemics/ship).
-        // 0.7 = 70% de l'energia conservada al rebot.
-        constexpr float RESTITUTION_BOUNDS = 0.7F;
+    // Velocity heredada de la nau a l'explosió (80% del feel original).
+    constexpr float SHIP_VELOCITY_INHERITANCE = 0.8F;
 
-        // Herència de velocity angular (trayectorias curvas)
-        constexpr float INHERITANCE_FACTOR_MIN = 0.7F;  // Mínimo 70% del drotacio heredat
-        constexpr float INHERITANCE_FACTOR_MAX = 1.0F;  // Màxim 100% del drotacio heredat
-        constexpr float FRICCIO_ANGULAR = 0.5F;         // Desacceleració angular (rad/s²)
+    // Velocity heredada de l'enemic a l'explosió (palanca per a tuneo).
+    // 1.0 = inèrcia completa; >1.0 amplifica la deriva; <1.0 la atenua.
+    constexpr float ENEMY_VELOCITY_INHERITANCE = 1.0F;
 
-        // Velocity heredada de la nau a l'explosió (80% del feel original).
-        constexpr float SHIP_VELOCITY_INHERITANCE = 0.8F;
+    // Tuneig específic de l'explosió d'enemic (overrides als defaults
+    // que es passen com a paràmetres opcionals a explode()).
+    constexpr float ENEMY_LIFETIME = 2.5F;       // Vida mínima del debris (s) — els que segueixen movent-se viuen més
+    constexpr float ENEMY_FRICTION = -30.0F;     // Fricció més suau perquè s'estenguin més
+    constexpr int ENEMY_SEGMENT_MULTIPLIER = 1;  // Sense còpies (5 cares = 5 trossos); >1 produeix grups sincronitzats
 
-        // Velocity heredada de l'enemic a l'explosió (palanca per a tuneo).
-        // 1.0 = inèrcia completa; >1.0 amplifica la deriva; <1.0 la atenua.
-        constexpr float ENEMY_VELOCITY_INHERITANCE = 1.0F;
+    // Angular velocity sin for trajectory inheritance
+    // Excess above this threshold is converted to tangential linear velocity
+    // Prevents "vortex trap" problem with high-rotation enemies
+    constexpr float SPEED_ROT_MAX = 1.5F;  // rad/s (~86°/s)
 
-        // Tuneig específic de l'explosió d'enemic (overrides als defaults
-        // que es passen com a paràmetres opcionals a explode()).
-        constexpr float ENEMY_LIFETIME = 2.5F;       // Vida mínima del debris (s) — els que segueixen movent-se viuen més
-        constexpr float ENEMY_FRICTION = -30.0F;     // Fricció més suau perquè s'estenguin més
-        constexpr int ENEMY_SEGMENT_MULTIPLIER = 1;  // Sense còpies (5 cares = 5 trossos); >1 produeix grups sincronitzats
-
-        // Angular velocity sin for trajectory inheritance
-        // Excess above this threshold is converted to tangential linear velocity
-        // Prevents "vortex trap" problem with high-rotation enemies
-        constexpr float SPEED_ROT_MAX = 1.5F;  // rad/s (~86°/s)
-    }  // namespace Debris
-
-}  // namespace Defaults::Physics
+}  // namespace Defaults::Physics::Debris

source/core/defaults/ship.hpp

@@ -1,33 +0,0 @@
-// ship.hpp - Configuració de la nau (invulnerabilitat, parpelleig)
-// © 2026 JailDesigner
-
-#pragma once
-
-namespace Defaults::Ship {
-
-    // Invulnerabilidad post-respawn
-    constexpr float INVULNERABILITY_DURATION = 3.0F;  // Segundos de invulnerabilidad
-
-    // Parpadeo visual durante invulnerabilidad
-    constexpr float BLINK_VISIBLE_TIME = 0.1F;    // Tiempo visible (segundos)
-    constexpr float BLINK_INVISIBLE_TIME = 0.1F;  // Tiempo invisible (segundos)
-    // Frecuencia total: 0.2s/ciclo = 5 Hz (~15 parpadeos en 3s)
-
-    // Cuerpo físico
-    constexpr float MASS = 10.0F;            // Masa de referencia para choques
-    constexpr float RESTITUTION = 0.6F;      // Rebote moderado contra paredes
-    constexpr float LINEAR_DAMPING = 1.5F;   // Fricción exponencial (s⁻¹)
-    constexpr float ANGULAR_DAMPING = 0.0F;  // Rotación 100% por input (no inercial)
-
-    // Empuje visual: escala proporcional a la velocidad (0..200 px/s → 1.0..1.5)
-    // Mantiene la sensación del Pascal original.
-    constexpr float VISUAL_PUSH_DIVISOR = 33.33F;  // SPEED / DIVISOR = empuje visual
-    constexpr float VISUAL_SCALE_DIVISOR = 12.0F;  // SCALE = 1 + (PUSH / DIVISOR)
-
-    // Estat "ferit": entre primera col·lisió amb enemic i recuperació o segona col·lisió mortal.
-    namespace Hurt {
-        constexpr float DURATION = 15.0F;  // Segons en estat ferit (provisional)
-        constexpr float BLINK_HZ = 10.0F;  // Freqüència parpelleig color normal ↔ ferit
-    }  // namespace Hurt
-
-}  // namespace Defaults::Ship

source/core/defaults/trail.hpp

@@ -7,7 +7,7 @@ namespace Defaults::Trail {
 
     constexpr int POOL_SIZE = 200;
 
-    constexpr float SPEED_THRESHOLD_PX_S = 54.0F;  // 30% de Physics::MAX_VELOCITY (180)
+    constexpr float SPEED_THRESHOLD_PX_S = 54.0F;  // 30% de player.yaml::physics.max_velocity (180 px/s)
     constexpr float EMIT_INTERVAL_S = 0.04F;       // ~25 Hz nominal
     constexpr float EMIT_JITTER_S = 0.015F;        // ±15 ms al cooldown
     constexpr float POSITION_JITTER_PX = 2.5F;     // jitter al punt de naixement

source/core/entities/entity_loader.cpp

@@ -0,0 +1,56 @@
+// entity_loader.cpp - Implementació del carregador d'entitats YAML
+// © 2026 JailDesigner
+
+#include "core/entities/entity_loader.hpp"
+
+#include <cstdint>
+#include <exception>
+#include <iostream>
+#include <sstream>
+#include <string>
+#include <vector>
+
+#include "core/resources/resource_helper.hpp"
+
+namespace Entities {
+
+    std::unordered_map<std::string, std::shared_ptr<fkyaml::node>> EntityLoader::cache;
+
+    auto EntityLoader::load(const std::string& name) -> std::shared_ptr<fkyaml::node> {
+        // Cache hit
+        auto it = cache.find(name);
+        if (it != cache.end()) {
+            std::cout << "[EntityLoader] Cache hit: " << name << '\n';
+            return it->second;
+        }
+
+        const std::string PATH = "entities/" + name + "/" + name + ".yaml";
+
+        std::vector<uint8_t> data = Resource::Helper::loadFile(PATH);
+        if (data.empty()) {
+            std::cerr << "[EntityLoader] Error: no s'ha pogut load " << PATH << '\n';
+            return nullptr;
+        }
+
+        try {
+            std::string yaml_content(data.begin(), data.end());
+            std::stringstream stream(yaml_content);
+            auto node = std::make_shared<fkyaml::node>(fkyaml::node::deserialize(stream));
+
+            std::cout << "[EntityLoader] Carregat: " << PATH << '\n';
+            cache[name] = node;
+            return node;
+        } catch (const std::exception& e) {
+            std::cerr << "[EntityLoader] Excepció parsejant " << PATH << ": " << e.what() << '\n';
+            return nullptr;
+        }
+    }
+
+    void EntityLoader::clearCache() {
+        std::cout << "[EntityLoader] Netejant caché (" << cache.size() << " entitats)" << '\n';
+        cache.clear();
+    }
+
+    auto EntityLoader::getCacheSize() -> size_t { return cache.size(); }
+
+}  // namespace Entities

source/core/entities/entity_loader.hpp

@@ -0,0 +1,38 @@
+// entity_loader.hpp - Carregador genèric de descriptors d'entitats en YAML
+// © 2026 JailDesigner
+//
+// Cada entitat viu a `data/entities/<name>/<name>.yaml` (mateix patró que el
+// projecte germà aee_arcade). Aquest loader resol el path, llegeix del
+// resource pack via Resource::Helper, parseja amb fkyaml i cacheja el node
+// per evitar relectures. Retorna nullptr en cas d'error (el caller decideix
+// si abortar).
+
+#pragma once
+
+#include <memory>
+#include <string>
+#include <unordered_map>
+
+#include "external/fkyaml_node.hpp"
+
+namespace Entities {
+
+    class EntityLoader {
+       public:
+        EntityLoader() = delete;  // tot estàtic
+
+        // Carrega el descriptor d'una entitat per nom (ex. "player" →
+        // "entities/player/player.yaml"). Retorna nullptr si no es pot
+        // carregar o parsejar. Cachejat per nom.
+        static auto load(const std::string& name) -> std::shared_ptr<fkyaml::node>;
+
+        // Buidar caché (útil per debug/recàrrega).
+        static void clearCache();
+
+        [[nodiscard]] static auto getCacheSize() -> size_t;
+
+       private:
+        static std::unordered_map<std::string, std::shared_ptr<fkyaml::node>> cache;
+    };
+
+}  // namespace Entities

source/core/graphics/shape_loader.cpp

@@ -53,7 +53,8 @@ namespace Graphics {
 
         // Cache and return
         std::cout << "[ShapeLoader] Carregat: " << normalized << " (" << shape->getName()
-                  << ", " << shape->getNumPrimitives() << " primitives)" << '\n';
+                  << ", " << shape->getNumPrimitives() << " primitives, bounding_radius="
+                  << shape->getBoundingRadius() << ")" << '\n';
 
         cache[filename] = shape;
         return shape;

source/core/resources/resource_pack.cpp

@@ -10,300 +10,287 @@
 
 namespace Resource {
 
-// Calcular checksum CRC32 simplificat
-auto Pack::calculateChecksum(const std::vector<uint8_t>& data) -> uint32_t {
-    uint32_t checksum = 0x12345678;
-    for (unsigned char byte : data) {
-        checksum = ((checksum << 5) + checksum) + byte;
-    }
-    return checksum;
-}
-
-// Encriptació XOR (simètrica)
-void Pack::encryptData(std::vector<uint8_t>& data, const std::string& key) {
-    if (key.empty()) {
-        return;
-    }
-    for (size_t i = 0; i < data.size(); ++i) {
-        data[i] ^= key[i % key.length()];
-    }
-}
-
-void Pack::decryptData(std::vector<uint8_t>& data, const std::string& key) {
-    // XOR es simètric
-    encryptData(data, key);
-}
-
-// Llegir file complet a memòria
-auto Pack::readFile(const std::string& filepath) -> std::vector<uint8_t> {
-    std::ifstream file(filepath, std::ios::binary | std::ios::ate);
-    if (!file) {
-        std::cerr << "[ResourcePack] Error: no es pot obrir " << filepath << '\n';
-        return {};
+    // Calcular checksum CRC32 simplificat
+    auto Pack::calculateChecksum(const std::vector<uint8_t>& data) -> uint32_t {
+        uint32_t checksum = 0x12345678;
+        for (unsigned char byte : data) {
+            checksum = ((checksum << 5) + checksum) + byte;
+        }
+        return checksum;
     }
 
-    std::streamsize file_size = file.tellg();
-    file.seekg(0, std::ios::beg);
-
-    std::vector<uint8_t> data(file_size);
-    if (!file.read(reinterpret_cast<char*>(data.data()), file_size)) {
-        std::cerr << "[ResourcePack] Error: no es pot llegir " << filepath << '\n';
-        return {};
+    // Encriptació XOR (simètrica)
+    void Pack::encryptData(std::vector<uint8_t>& data, const std::string& key) {
+        if (key.empty()) {
+            return;
+        }
+        for (size_t i = 0; i < data.size(); ++i) {
+            data[i] ^= key[i % key.length()];
+        }
     }
 
-    return data;
-}
-
-// Añadir un file individual al paquet
-auto Pack::addFile(const std::string& filepath, const std::string& pack_name) -> bool {
-    auto file_data = readFile(filepath);
-    if (file_data.empty()) {
-        return false;
+    void Pack::decryptData(std::vector<uint8_t>& data, const std::string& key) {
+        // XOR es simètric
+        encryptData(data, key);
     }
 
-    ResourceEntry entry{
-        .filename = pack_name,
-        .offset = data_.size(),
-        .size = file_data.size(),
-        .checksum = calculateChecksum(file_data)};
-
-    // Añadir dades al bloc de dades
-    data_.insert(data_.end(), file_data.begin(), file_data.end());
-
-    resources_[pack_name] = entry;
-
-    std::cout << "[ResourcePack] Añadido: " << pack_name << " (" << file_data.size()
-              << " bytes)\n";
-    return true;
-}
-
-// Añadir todos los archivos de un directori recursivament
-auto Pack::addDirectory(const std::string& dir_path,
-    const std::string& base_path) -> bool {
-    namespace fs = std::filesystem;
-
-    if (!fs::exists(dir_path) || !fs::is_directory(dir_path)) {
-        std::cerr << "[ResourcePack] Error: directori no trobat: " << dir_path << '\n';
-        return false;
-    }
-
-    std::string current_base = base_path.empty() ? "" : base_path + "/";
-
-    for (const auto& entry : fs::recursive_directory_iterator(dir_path)) {
-        if (!entry.is_regular_file()) {
-            continue;
+    // Llegir file complet a memòria
+    auto Pack::readFile(const std::string& filepath) -> std::vector<uint8_t> {
+        std::ifstream file(filepath, std::ios::binary | std::ios::ate);
+        if (!file) {
+            std::cerr << "[ResourcePack] Error: no es pot obrir " << filepath << '\n';
+            return {};
         }
 
-        std::string full_path = entry.path().string();
-        std::string relative_path = entry.path().lexically_relative(dir_path).string();
+        std::streamsize file_size = file.tellg();
+        file.seekg(0, std::ios::beg);
 
-        // Convertir barres invertides a normals (Windows)
-        std::ranges::replace(relative_path, '\\', '/');
-
-        // Saltar archivos de desenvolupament
-        if (relative_path.find(".world") != std::string::npos ||
-            relative_path.find(".tsx") != std::string::npos ||
-            relative_path.find(".DS_Store") != std::string::npos ||
-            relative_path.find(".git") != std::string::npos) {
-            std::cout << "[ResourcePack] Saltant: " << relative_path << '\n';
-            continue;
+        std::vector<uint8_t> data(file_size);
+        if (!file.read(reinterpret_cast<char*>(data.data()), file_size)) {
+            std::cerr << "[ResourcePack] Error: no es pot llegir " << filepath << '\n';
+            return {};
         }
 
-        std::string pack_name = current_base + relative_path;
-        addFile(full_path, pack_name);
+        return data;
     }
 
-    return true;
-}
+    // Añadir un file individual al paquet
+    auto Pack::addFile(const std::string& filepath, const std::string& pack_name) -> bool {
+        auto file_data = readFile(filepath);
+        if (file_data.empty()) {
+            return false;
+        }
 
-// Guardar paquet a disc
-auto Pack::savePack(const std::string& pack_file) -> bool {
-    std::ofstream file(pack_file, std::ios::binary);
-    if (!file) {
-        std::cerr << "[ResourcePack] Error: no es pot crear " << pack_file << '\n';
-        return false;
+        ResourceEntry entry{
+            .filename = pack_name,
+            .offset = data_.size(),
+            .size = file_data.size(),
+            .checksum = calculateChecksum(file_data)};
+
+        // Añadir dades al bloc de dades
+        data_.insert(data_.end(), file_data.begin(), file_data.end());
+
+        resources_[pack_name] = entry;
+
+        return true;
     }
 
-    // Escriure capçalera
-    file.write(MAGIC_HEADER, 4);
-    file.write(reinterpret_cast<const char*>(&VERSION), sizeof(VERSION));
+    // Añadir todos los archivos de un directori recursivament
+    auto Pack::addDirectory(const std::string& dir_path,
+        const std::string& base_path) -> bool {
+        namespace fs = std::filesystem;
 
-    // Escriure nombre de recursos
-    auto resource_count = static_cast<uint32_t>(resources_.size());
-    file.write(reinterpret_cast<const char*>(&resource_count), sizeof(resource_count));
+        if (!fs::exists(dir_path) || !fs::is_directory(dir_path)) {
+            std::cerr << "[ResourcePack] Error: directori no trobat: " << dir_path << '\n';
+            return false;
+        }
 
-    // Escriure metadades de recursos
-    for (const auto& [name, entry] : resources_) {
-        // Nom del file
-        auto name_len = static_cast<uint32_t>(entry.filename.length());
-        file.write(reinterpret_cast<const char*>(&name_len), sizeof(name_len));
-        file.write(entry.filename.c_str(), name_len);
+        std::string current_base = base_path.empty() ? "" : base_path + "/";
 
-        // Offset, mida, checksum
-        file.write(reinterpret_cast<const char*>(&entry.offset), sizeof(entry.offset));
-        file.write(reinterpret_cast<const char*>(&entry.size), sizeof(entry.size));
-        file.write(reinterpret_cast<const char*>(&entry.checksum), sizeof(entry.checksum));
+        for (const auto& entry : fs::recursive_directory_iterator(dir_path)) {
+            if (!entry.is_regular_file()) {
+                continue;
+            }
+
+            std::string full_path = entry.path().string();
+            std::string relative_path = entry.path().lexically_relative(dir_path).string();
+
+            // Convertir barres invertides a normals (Windows)
+            std::ranges::replace(relative_path, '\\', '/');
+
+            // Saltar archivos de desenvolupament
+            if (relative_path.find(".world") != std::string::npos ||
+                relative_path.find(".tsx") != std::string::npos ||
+                relative_path.find(".DS_Store") != std::string::npos ||
+                relative_path.find(".git") != std::string::npos) {
+                continue;
+            }
+
+            std::string pack_name = current_base + relative_path;
+            addFile(full_path, pack_name);
+        }
+
+        return true;
     }
 
-    // Encriptar dades
-    std::vector<uint8_t> encrypted_data = data_;
-    encryptData(encrypted_data, DEFAULT_ENCRYPT_KEY);
+    // Guardar paquet a disc
+    auto Pack::savePack(const std::string& pack_file) -> bool {
+        std::ofstream file(pack_file, std::ios::binary);
+        if (!file) {
+            std::cerr << "[ResourcePack] Error: no es pot crear " << pack_file << '\n';
+            return false;
+        }
 
-    // Escriure mida de dades y dades encriptades
-    auto data_size = static_cast<uint64_t>(encrypted_data.size());
-    file.write(reinterpret_cast<const char*>(&data_size), sizeof(data_size));
-    file.write(reinterpret_cast<const char*>(encrypted_data.data()), encrypted_data.size());
+        // Escriure capçalera
+        file.write(MAGIC_HEADER, 4);
+        file.write(reinterpret_cast<const char*>(&VERSION), sizeof(VERSION));
 
-    std::cout << "[ResourcePack] Guardat: " << pack_file << " (" << resources_.size()
-              << " recursos, " << data_size << " bytes)\n";
+        // Escriure nombre de recursos
+        auto resource_count = static_cast<uint32_t>(resources_.size());
+        file.write(reinterpret_cast<const char*>(&resource_count), sizeof(resource_count));
 
-    return true;
-}
+        // Escriure metadades de recursos
+        for (const auto& [name, entry] : resources_) {
+            // Nom del file
+            auto name_len = static_cast<uint32_t>(entry.filename.length());
+            file.write(reinterpret_cast<const char*>(&name_len), sizeof(name_len));
+            file.write(entry.filename.c_str(), name_len);
 
-// Carregar paquet desde disc
-auto Pack::loadPack(const std::string& pack_file) -> bool {
-    std::ifstream file(pack_file, std::ios::binary);
-    if (!file) {
-        std::cerr << "[ResourcePack] Error: no es pot obrir " << pack_file << '\n';
-        return false;
+            // Offset, mida, checksum
+            file.write(reinterpret_cast<const char*>(&entry.offset), sizeof(entry.offset));
+            file.write(reinterpret_cast<const char*>(&entry.size), sizeof(entry.size));
+            file.write(reinterpret_cast<const char*>(&entry.checksum), sizeof(entry.checksum));
+        }
+
+        // Encriptar dades
+        std::vector<uint8_t> encrypted_data = data_;
+        encryptData(encrypted_data, DEFAULT_ENCRYPT_KEY);
+
+        // Escriure mida de dades y dades encriptades
+        auto data_size = static_cast<uint64_t>(encrypted_data.size());
+        file.write(reinterpret_cast<const char*>(&data_size), sizeof(data_size));
+        file.write(reinterpret_cast<const char*>(encrypted_data.data()), encrypted_data.size());
+
+        return true;
     }
 
-    // Llegir capçalera
-    char magic[4];
-    file.read(magic, 4);
-    if (std::string(magic, 4) != MAGIC_HEADER) {
-        std::cerr << "[ResourcePack] Error: capçalera invàlida (esperava " << MAGIC_HEADER
-                  << ")\n";
-        return false;
+    // Carregar paquet desde disc
+    auto Pack::loadPack(const std::string& pack_file) -> bool {
+        std::ifstream file(pack_file, std::ios::binary);
+        if (!file) {
+            std::cerr << "[ResourcePack] Error: no es pot obrir " << pack_file << '\n';
+            return false;
+        }
+
+        // Llegir capçalera
+        char magic[4];
+        file.read(magic, 4);
+        if (std::string(magic, 4) != MAGIC_HEADER) {
+            std::cerr << "[ResourcePack] Error: capçalera invàlida (esperava " << MAGIC_HEADER
+                      << ")\n";
+            return false;
+        }
+
+        uint32_t version;
+        file.read(reinterpret_cast<char*>(&version), sizeof(version));
+        if (version != VERSION) {
+            std::cerr << "[ResourcePack] Error: versión incompatible (esperava " << VERSION
+                      << ", trobat " << version << ")\n";
+            return false;
+        }
+
+        // Llegir nombre de recursos
+        uint32_t resource_count;
+        file.read(reinterpret_cast<char*>(&resource_count), sizeof(resource_count));
+
+        // Llegir metadades de recursos
+        resources_.clear();
+        for (uint32_t i = 0; i < resource_count; ++i) {
+            // Nom del file
+            uint32_t name_len;
+            file.read(reinterpret_cast<char*>(&name_len), sizeof(name_len));
+
+            std::string filename(name_len, '\0');
+            file.read(filename.data(), name_len);
+
+            // Offset, mida, checksum
+            ResourceEntry entry;
+            entry.filename = filename;
+            file.read(reinterpret_cast<char*>(&entry.offset), sizeof(entry.offset));
+            file.read(reinterpret_cast<char*>(&entry.size), sizeof(entry.size));
+            file.read(reinterpret_cast<char*>(&entry.checksum), sizeof(entry.checksum));
+
+            resources_[filename] = entry;
+        }
+
+        // Llegir dades encriptades
+        uint64_t data_size;
+        file.read(reinterpret_cast<char*>(&data_size), sizeof(data_size));
+
+        data_.resize(data_size);
+        file.read(reinterpret_cast<char*>(data_.data()), data_size);
+
+        // Desencriptar
+        decryptData(data_, DEFAULT_ENCRYPT_KEY);
+
+        return true;
     }
 
-    uint32_t version;
-    file.read(reinterpret_cast<char*>(&version), sizeof(version));
-    if (version != VERSION) {
-        std::cerr << "[ResourcePack] Error: versión incompatible (esperava " << VERSION
-                  << ", trobat " << version << ")\n";
-        return false;
-    }
+    // Obtenir un recurs del paquet
+    auto Pack::getResource(const std::string& filename) -> std::vector<uint8_t> {
+        auto it = resources_.find(filename);
+        if (it == resources_.end()) {
+            std::cerr << "[ResourcePack] Error: recurs no trobat: " << filename << '\n';
+            return {};
+        }
 
-    // Llegir nombre de recursos
-    uint32_t resource_count;
-    file.read(reinterpret_cast<char*>(&resource_count), sizeof(resource_count));
+        const auto& entry = it->second;
 
-    // Llegir metadades de recursos
-    resources_.clear();
-    for (uint32_t i = 0; i < resource_count; ++i) {
-        // Nom del file
-        uint32_t name_len;
-        file.read(reinterpret_cast<char*>(&name_len), sizeof(name_len));
-
-        std::string filename(name_len, '\0');
-        file.read(filename.data(), name_len);
-
-        // Offset, mida, checksum
-        ResourceEntry entry;
-        entry.filename = filename;
-        file.read(reinterpret_cast<char*>(&entry.offset), sizeof(entry.offset));
-        file.read(reinterpret_cast<char*>(&entry.size), sizeof(entry.size));
-        file.read(reinterpret_cast<char*>(&entry.checksum), sizeof(entry.checksum));
-
-        resources_[filename] = entry;
-    }
-
-    // Llegir dades encriptades
-    uint64_t data_size;
-    file.read(reinterpret_cast<char*>(&data_size), sizeof(data_size));
-
-    data_.resize(data_size);
-    file.read(reinterpret_cast<char*>(data_.data()), data_size);
-
-    // Desencriptar
-    decryptData(data_, DEFAULT_ENCRYPT_KEY);
-
-    std::cout << "[ResourcePack] Carregat: " << pack_file << " (" << resources_.size()
-              << " recursos)\n";
-
-    return true;
-}
-
-// Obtenir un recurs del paquet
-auto Pack::getResource(const std::string& filename) -> std::vector<uint8_t> {
-    auto it = resources_.find(filename);
-    if (it == resources_.end()) {
-        std::cerr << "[ResourcePack] Error: recurs no trobat: " << filename << '\n';
-        return {};
-    }
-
-    const auto& entry = it->second;
-
-    // Extreure dades
-    if (entry.offset + entry.size > data_.size()) {
-        std::cerr << "[ResourcePack] Error: offset/mida invàlid per " << filename << '\n';
-        return {};
-    }
-
-    std::vector<uint8_t> resource_data(data_.begin() + entry.offset,
-        data_.begin() + entry.offset + entry.size);
-
-    // Verificar checksum
-    uint32_t computed_checksum = calculateChecksum(resource_data);
-    if (computed_checksum != entry.checksum) {
-        std::cerr << "[ResourcePack] ADVERTÈNCIA: checksum invàlid per " << filename
-                  << " (esperat " << entry.checksum << ", calculat " << computed_checksum
-                  << ")\n";
-        // No falla, pero adverteix
-    }
-
-    return resource_data;
-}
-
-// Comprovar si existeix un recurs
-auto Pack::hasResource(const std::string& filename) const -> bool {
-    return resources_.contains(filename);
-}
-
-// Obtenir list de todos los recursos
-auto Pack::getResourceList() const -> std::vector<std::string> {
-    std::vector<std::string> list;
-    list.reserve(resources_.size());
-
-    for (const auto& [name, entry] : resources_) {
-        list.push_back(name);
-    }
-
-    std::ranges::sort(list);
-    return list;
-}
-
-// Validar integritat del paquet
-auto Pack::validatePack() const -> bool {
-    bool valid = true;
-
-    for (const auto& [name, entry] : resources_) {
-        // Verificar offset i mida
+        // Extreure dades
         if (entry.offset + entry.size > data_.size()) {
-            std::cerr << "[ResourcePack] Error de validació: " << name
-                      << " té offset/mida invàlid\n";
-            valid = false;
-            continue;
+            std::cerr << "[ResourcePack] Error: offset/mida invàlid per " << filename << '\n';
+            return {};
         }
 
-        // Extreure i verificar checksum
         std::vector<uint8_t> resource_data(data_.begin() + entry.offset,
             data_.begin() + entry.offset + entry.size);
 
+        // Verificar checksum
         uint32_t computed_checksum = calculateChecksum(resource_data);
         if (computed_checksum != entry.checksum) {
-            std::cerr << "[ResourcePack] Error de validació: " << name
-                      << " té checksum invàlid\n";
-            valid = false;
+            std::cerr << "[ResourcePack] ADVERTÈNCIA: checksum invàlid per " << filename
+                      << " (esperat " << entry.checksum << ", calculat " << computed_checksum
+                      << ")\n";
+            // No falla, pero adverteix
         }
+
+        return resource_data;
     }
 
-    if (valid) {
-        std::cout << "[ResourcePack] Validació OK (" << resources_.size() << " recursos)\n";
+    // Comprovar si existeix un recurs
+    auto Pack::hasResource(const std::string& filename) const -> bool {
+        return resources_.contains(filename);
     }
 
-    return valid;
-}
+    // Obtenir list de todos los recursos
+    auto Pack::getResourceList() const -> std::vector<std::string> {
+        std::vector<std::string> list;
+        list.reserve(resources_.size());
+
+        for (const auto& [name, entry] : resources_) {
+            list.push_back(name);
+        }
+
+        std::ranges::sort(list);
+        return list;
+    }
+
+    // Validar integritat del paquet
+    auto Pack::validatePack() const -> bool {
+        bool valid = true;
+
+        for (const auto& [name, entry] : resources_) {
+            // Verificar offset i mida
+            if (entry.offset + entry.size > data_.size()) {
+                std::cerr << "[ResourcePack] Error de validació: " << name
+                          << " té offset/mida invàlid\n";
+                valid = false;
+                continue;
+            }
+
+            // Extreure i verificar checksum
+            std::vector<uint8_t> resource_data(data_.begin() + entry.offset,
+                data_.begin() + entry.offset + entry.size);
+
+            uint32_t computed_checksum = calculateChecksum(resource_data);
+            if (computed_checksum != entry.checksum) {
+                std::cerr << "[ResourcePack] Error de validació: " << name
+                          << " té checksum invàlid\n";
+                valid = false;
+            }
+        }
+
+        return valid;
+    }
 
 }  // namespace Resource

source/game/entities/bullet.cpp

@@ -14,38 +14,39 @@
 #include "core/rendering/shape_renderer.hpp"
 #include "core/types.hpp"
 #include "game/constants.hpp"
+#include "game/entities/bullet_config.hpp"
+#include "game/entities/bullet_registry.hpp"
 
 Bullet::Bullet(Rendering::Renderer* renderer)
-    : Entity(renderer) {
-    // Brightness específico para balas
+    : Entity(renderer),
+      config_(&BulletRegistry::get()) {
     brightness_ = Defaults::Brightness::BALA;
 
-    // Configuración del cuerpo físico.
-    // Las balas son cinemáticas: no colisionan con otros bodies ni paredes.
-    // El gameplay (GameScene) gestiona los hits con check_collision y la
-    // salida del PLAYAREA. Por eso radius=0 en el world (no participa en
-    // resolveBodyCollisions ni resolveBoundsCollisions).
-    body_.setMass(0.5F);          // Ligera (no afecta a nadie, pero por consistencia)
-    body_.radius = 0.0F;          // Sin colisión física (cinemática pura)
-    body_.restitution = 0.0F;     // Irrelevante (no rebota)
-    body_.linear_damping = 0.0F;  // Sin fricción (movimiento rectilíneo uniforme)
-    body_.angular_damping = 0.0F;
+    // Cinemàtiques pures: no col·lisionen al PhysicsWorld (body_.radius = 0).
+    // El gameplay (GameScene) gestiona els hits via checkCollisionSwept i la
+    // sortida del PLAYAREA.
+    body_.setMass(config_->physics.mass);
+    body_.radius = 0.0F;
+    body_.restitution = config_->physics.restitution;
+    body_.linear_damping = config_->physics.linear_damping;
+    body_.angular_damping = config_->physics.angular_damping;
 
-    // Cargar shape compartida desde archivo
-    shape_ = Graphics::ShapeLoader::load("bullet.shp");
+    shape_ = Graphics::ShapeLoader::load(config_->shape.path);
     if (!shape_ || !shape_->isValid()) {
-        std::cerr << "[Bullet] Error: no s'ha pogut load bullet.shp" << '\n';
+        std::cerr << "[Bullet] Error: no s'ha pogut carregar " << config_->shape.path << '\n';
     }
+
+    // Radi de col·lisió derivat del cercle circumscrit de la shape.
+    const float BOUNDING = (shape_ != nullptr) ? shape_->getBoundingRadius() : 0.0F;
+    collision_radius_ = BOUNDING * config_->shape.scale * config_->shape.collision_factor;
 }
 
 void Bullet::init() {
-    // Inicialment inactiva
     is_active_ = false;
     center_ = {.x = 0.0F, .y = 0.0F};
     prev_position_ = {.x = 0.0F, .y = 0.0F};
     angle_ = 0.0F;
 
-    // Reset del cuerpo físico
     body_.position = Vec2{};
     body_.velocity = Vec2{};
     body_.angle = 0.0F;
@@ -53,29 +54,24 @@ void Bullet::init() {
     body_.clearAccumulators();
 }
 
-void Bullet::fire(const Vec2& position, float angle, uint8_t owner_id) {
-    // Activar bullet
+void Bullet::fire(const Vec2& position, float angle, uint8_t owner_id, float bullet_speed) {
     is_active_ = true;
-
-    // Almacenar propietario (0=P1, 1=P2)
     owner_id_ = owner_id;
 
-    // Posición y orientación iniciales = ship
     center_ = position;
-    prev_position_ = position;  // Al spawn no hi ha moviment encara: swept degenera a punt-cercle
+    prev_position_ = position;  // spawn: swept degenera a punt-cercle
     angle_ = angle;
 
-    // Sincronizar el body físico: posición + velocidad cartesiana
-    // angle - PI/2 porque angle=0 apunta hacia arriba (eje Y negativo SDL)
+    // Sincronizar el body físic: posició + velocitat cartesiana.
+    // angle - PI/2 perquè angle=0 apunta cap amunt (eje Y negatiu SDL).
     body_.position = position;
     body_.angle = angle;
     const float DIR_X = std::cos(angle - (Constants::PI / 2.0F));
     const float DIR_Y = std::sin(angle - (Constants::PI / 2.0F));
-    body_.velocity = Vec2{.x = DIR_X * Defaults::Game::BULLET_SPEED, .y = DIR_Y * Defaults::Game::BULLET_SPEED};
+    body_.velocity = Vec2{.x = DIR_X * bullet_speed, .y = DIR_Y * bullet_speed};
     body_.angular_velocity = 0.0F;
     body_.clearAccumulators();
 
-    // Reproducir sonido de disparo láser
     Audio::get()->playSound(Defaults::Sound::LASER, Audio::Group::GAME);
 }
 
@@ -87,24 +83,18 @@ void Bullet::update(float /*delta_time*/) {
 }
 
 void Bullet::postUpdate(float /*delta_time*/) {
-    // Captura la posició al final del frame anterior abans de sobreescriure center_;
-    // així el sistema de col·lisions pot fer swept (segment-vs-cercle) entre prev_position_
-    // i la nova center_, evitant tunneling a velocitats altes.
     prev_position_ = center_;
     center_ = body_.position;
-    // angle_ no cambia (las balas no rotan visualmente).
 }
 
 void Bullet::desactivar() {
     is_active_ = false;
-    // Detener el cuerpo físico para que no acumule deriva mientras inactiva.
     body_.velocity = Vec2{};
     body_.angular_velocity = 0.0F;
 }
 
 void Bullet::draw() const {
     if (is_active_ && shape_) {
-        // Les bales roten segons l'angle de trayectòria (estático tras disparo)
-        Rendering::renderShape(renderer_, shape_, center_, angle_, 1.0F, 1.0F, brightness_, Defaults::Palette::BULLET);
+        Rendering::renderShape(renderer_, shape_, center_, angle_, 1.0F, 1.0F, brightness_, config_->colors.normal);
     }
 }

source/game/entities/bullet.hpp

@@ -6,10 +6,12 @@
 
 #include <cstdint>
 
-#include "core/defaults.hpp"
 #include "core/entities/entity.hpp"
 #include "core/types.hpp"
 
+// Forward declaration — la definició completa s'inclou només al .cpp.
+struct BulletConfig;
+
 class Bullet : public Entities::Entity {
    public:
     Bullet()
@@ -17,7 +19,7 @@ class Bullet : public Entities::Entity {
     explicit Bullet(Rendering::Renderer* renderer);
 
     void init() override;
-    void fire(const Vec2& position, float angle, uint8_t owner_id);
+    void fire(const Vec2& position, float angle, uint8_t owner_id, float bullet_speed);
     void update(float delta_time) override;
     void postUpdate(float delta_time) override;
     void draw() const override;
@@ -25,25 +27,25 @@ class Bullet : public Entities::Entity {
     // Override: Interfaz de Entity
     [[nodiscard]] auto isActive() const -> bool override { return is_active_; }
 
-    // Override: Interfaz de colisión (gameplay-level: PLAYAREA bounds-check)
-    [[nodiscard]] auto getCollisionRadius() const -> float override {
-        return Defaults::Entities::BULLET_RADIUS;
-    }
+    // Override: Interfaz de colisión (radi derivat al ctor des del shape).
+    [[nodiscard]] auto getCollisionRadius() const -> float override { return collision_radius_; }
     [[nodiscard]] auto isCollidable() const -> bool override {
         return is_active_;
     }
 
+    // Configuració associada (vàlida des del ctor — la bala l'agafa del BulletRegistry).
+    [[nodiscard]] auto getConfig() const -> const BulletConfig& { return *config_; }
+
     // Getters (API pública sin cambios)
     [[nodiscard]] auto getOwnerId() const -> uint8_t { return owner_id_; }
-    // Posició al final del frame anterior, per a CCD segment-vs-cercle.
     [[nodiscard]] auto getPrevPosition() const -> const Vec2& { return prev_position_; }
     void desactivar();
 
    private:
-    // Miembros específicos de Bullet (heredados: renderer_, shape_, center_, angle_, brightness_, body_).
-    // Inicializados en la declaración para que tanto el ctor por defecto como el que toma renderer
-    // dejen el objeto en estado coherente (proyectil inactivo, sin owner).
+    const BulletConfig* config_{nullptr};  // apunta al BulletRegistry; vàlid post-ctor
+    float collision_radius_{0.0F};         // derivat: shape.bounding_radius × scale × collision_factor
+
     bool is_active_{false};
     uint8_t owner_id_{0};   // 0=P1, 1=P2
-    Vec2 prev_position_{};  // Posició al final del frame anterior (per a swept collision)
+    Vec2 prev_position_{};  // posició al final del frame anterior (swept CCD)
 };

source/game/entities/bullet_config.cpp

@@ -0,0 +1,80 @@
+// bullet_config.cpp - Implementació del parser de BulletConfig
+// © 2026 JailDesigner
+
+#include "game/entities/bullet_config.hpp"
+
+#include <cstdint>
+#include <exception>
+#include <iostream>
+#include <string>
+
+namespace {
+
+    auto parseColor(const fkyaml::node& node, SDL_Color& out) -> bool {
+        if (!node.is_sequence() || node.size() != 3) {
+            return false;
+        }
+        const auto R = node[0].get_value<uint32_t>();
+        const auto G = node[1].get_value<uint32_t>();
+        const auto B = node[2].get_value<uint32_t>();
+        out = SDL_Color{
+            .r = static_cast<uint8_t>(R),
+            .g = static_cast<uint8_t>(G),
+            .b = static_cast<uint8_t>(B),
+            .a = 255};
+        return true;
+    }
+
+    auto parseShape(const fkyaml::node& node, BulletConfig::ShapeCfg& out) -> bool {
+        if (!node.contains("shape") || !node["shape"].contains("path")) {
+            std::cerr << "[BulletConfig] Error: falta 'shape.path'\n";
+            return false;
+        }
+        const auto& s = node["shape"];
+        out.path = s["path"].get_value<std::string>();
+        out.scale = s.contains("scale") ? s["scale"].get_value<float>() : 1.0F;
+        out.collision_factor = s.contains("collision_factor")
+            ? s["collision_factor"].get_value<float>()
+            : 1.0F;
+        return true;
+    }
+
+    auto parsePhysics(const fkyaml::node& node, BulletConfig::PhysicsCfg& out) -> bool {
+        if (!node.contains("physics")) {
+            std::cerr << "[BulletConfig] Error: falta 'physics'\n";
+            return false;
+        }
+        const auto& p = node["physics"];
+        out.mass = p["mass"].get_value<float>();
+        out.restitution = p["restitution"].get_value<float>();
+        out.linear_damping = p["linear_damping"].get_value<float>();
+        out.angular_damping = p["angular_damping"].get_value<float>();
+        out.impact_momentum_factor = p["impact_momentum_factor"].get_value<float>();
+        return true;
+    }
+
+    auto parseColors(const fkyaml::node& node, BulletConfig::ColorsCfg& out) -> bool {
+        if (!node.contains("colors") || !parseColor(node["colors"]["normal"], out.normal)) {
+            std::cerr << "[BulletConfig] Error: 'colors.normal' no és [r,g,b]\n";
+            return false;
+        }
+        return true;
+    }
+
+}  // namespace
+
+auto BulletConfig::fromYaml(const fkyaml::node& node) -> std::optional<BulletConfig> {
+    try {
+        BulletConfig cfg;
+        cfg.name = node.contains("name") ? node["name"].get_value<std::string>() : "bullet";
+
+        if (!parseShape(node, cfg.shape)) { return std::nullopt; }
+        if (!parsePhysics(node, cfg.physics)) { return std::nullopt; }
+        if (!parseColors(node, cfg.colors)) { return std::nullopt; }
+
+        return cfg;
+    } catch (const std::exception& e) {
+        std::cerr << "[BulletConfig] Excepció parsejant: " << e.what() << '\n';
+        return std::nullopt;
+    }
+}

source/game/entities/bullet_config.hpp

@@ -0,0 +1,41 @@
+// bullet_config.hpp - Configuració de la bala carregada des de YAML
+// © 2026 JailDesigner
+//
+// Paral·lel a Player/EnemyConfig. Una sola instància a tot el joc (per ara);
+// es comparteix entre totes les bales actives via BulletRegistry.
+
+#pragma once
+
+#include <SDL3/SDL.h>
+
+#include <optional>
+#include <string>
+
+#include "external/fkyaml_node.hpp"
+
+struct BulletConfig {
+    struct ShapeCfg {
+        std::string path;
+        float scale;
+        float collision_factor;
+    };
+
+    struct PhysicsCfg {
+        float mass;
+        float restitution;
+        float linear_damping;
+        float angular_damping;
+        float impact_momentum_factor;  // factor de transferència bullet→enemic
+    };
+
+    struct ColorsCfg {
+        SDL_Color normal;
+    };
+
+    std::string name;
+    ShapeCfg shape;
+    PhysicsCfg physics;
+    ColorsCfg colors;
+
+    static auto fromYaml(const fkyaml::node& node) -> std::optional<BulletConfig>;
+};

source/game/entities/bullet_registry.cpp

@@ -0,0 +1,37 @@
+// bullet_registry.cpp - Implementació del registre de bala
+// © 2026 JailDesigner
+
+#include "game/entities/bullet_registry.hpp"
+
+#include <cstdlib>
+#include <iostream>
+
+#include "core/entities/entity_loader.hpp"
+
+BulletConfig BulletRegistry::config;
+bool BulletRegistry::loaded = false;
+
+auto BulletRegistry::load() -> bool {
+    auto yaml = Entities::EntityLoader::load("bullet");
+    if (!yaml) {
+        std::cerr << "[BulletRegistry] Error: no s'ha pogut carregar bullet.yaml\n";
+        return false;
+    }
+    auto cfg = BulletConfig::fromYaml(*yaml);
+    if (!cfg) {
+        std::cerr << "[BulletRegistry] Error: format invàlid a bullet.yaml\n";
+        return false;
+    }
+    config = *cfg;
+    loaded = true;
+    std::cout << "[BulletRegistry] Configuració de bala carregada.\n";
+    return true;
+}
+
+auto BulletRegistry::get() -> const BulletConfig& {
+    if (!loaded) {
+        std::cerr << "[BulletRegistry] FATAL: get() abans de load()\n";
+        std::exit(EXIT_FAILURE);
+    }
+    return config;
+}

source/game/entities/bullet_registry.hpp

@@ -0,0 +1,26 @@
+// bullet_registry.hpp - Registre estàtic de la configuració de la bala
+// © 2026 JailDesigner
+//
+// Una única instància per a tota la sessió. Es manté el patró registry
+// (paral·lel a EnemyRegistry) tot i ser una sola entitat: si el dia de demà
+// hi ha més tipus de bala (laser/plasma/etc.) només cal estendre-ho.
+
+#pragma once
+
+#include "game/entities/bullet_config.hpp"
+
+class BulletRegistry {
+   public:
+    BulletRegistry() = delete;
+
+    // Carrega data/entities/bullet/bullet.yaml. Retorna false si falla.
+    static auto load() -> bool;
+
+    // Accés a la configuració. Avorta amb log fatal si load() no s'ha cridat
+    // o ha fallat.
+    static auto get() -> const BulletConfig&;
+
+   private:
+    static BulletConfig config;
+    static bool loaded;
+};

source/game/entities/enemy.cpp

@@ -14,6 +14,8 @@
 #include "core/rendering/shape_renderer.hpp"
 #include "core/types.hpp"
 #include "game/constants.hpp"
+#include "game/entities/enemy_config.hpp"
+#include "game/entities/enemy_registry.hpp"
 
 namespace {
 
@@ -27,99 +29,72 @@ namespace {
     }
 
     // Recupera el "ángulo equivalente" de un body en movimiento (para zigzag).
-    // Si está parado, devuelve 0.
     auto velocityToAngle(const Vec2& velocity) -> float {
         if (velocity.lengthSquared() < 0.0001F) {
             return 0.0F;
         }
-        // El movimiento (vx, vy) corresponde a angle - PI/2; invertimos.
         return std::atan2(velocity.y, velocity.x) + (Constants::PI / 2.0F);
     }
 
+    // Random float [0..1).
+    auto randFloat01() -> float {
+        return static_cast<float>(std::rand()) / static_cast<float>(RAND_MAX);
+    }
+
+    // Random float [min..max).
+    auto randRange(float min, float max) -> float {
+        return min + (randFloat01() * (max - min));
+    }
+
 }  // namespace
 
 Enemy::Enemy(Rendering::Renderer* renderer)
-    : Entity(renderer),
-
-      tracking_strength_(Defaults::Enemies::Square::TRACKING_STRENGTH) {
+    : Entity(renderer) {
     brightness_ = Defaults::Brightness::ENEMIC;
 
-    // Configuración del cuerpo físico — defaults para enemy genérico.
-    // init() ajusta velocidad y masa según el tipo (Pentagon/Quadrat/Molinillo).
-    body_.setMass(Defaults::Enemies::Body::DEFAULT_MASS);
-    body_.radius = 0.0F;  // 0 hasta spawn (no colisiona inactivo)
-    body_.restitution = Defaults::Enemies::Body::RESTITUTION;
-    body_.linear_damping = Defaults::Enemies::Body::LINEAR_DAMPING;
-    body_.angular_damping = Defaults::Enemies::Body::ANGULAR_DAMPING;
+    // Body queda amb defaults inocus (radius=0 = no col·lisiona) fins
+    // que init() apliqui la configuració del tipus carregada via Registry.
+    body_.radius = 0.0F;
 }
 
 void Enemy::init(EnemyType type, const Vec2* ship_pos) {
     type_ = type;
+    config_ = &EnemyRegistry::get(type);
+    const EnemyConfig& cfg = *config_;
 
-    const char* shape_file = nullptr;
-    float base_speed = 0.0F;
-    float rotation_delta_min = 0.0F;
-    float rotation_delta_max = 0.0F;
-    float type_mass = Defaults::Enemies::Body::DEFAULT_MASS;
-
-    switch (type_) {
-        case EnemyType::PENTAGON:
-            shape_file = Defaults::Enemies::Pentagon::SHAPE_FILE;
-            base_speed = Defaults::Enemies::Pentagon::SPEED;
-            rotation_delta_min = Defaults::Enemies::Pentagon::ROTATION_DELTA_MIN;
-            rotation_delta_max = Defaults::Enemies::Pentagon::ROTATION_DELTA_MAX;
-            type_mass = Defaults::Enemies::Pentagon::MASS;
-            break;
-
-        case EnemyType::SQUARE:
-            shape_file = Defaults::Enemies::Square::SHAPE_FILE;
-            base_speed = Defaults::Enemies::Square::SPEED;
-            rotation_delta_min = Defaults::Enemies::Square::ROTATION_DELTA_MIN;
-            rotation_delta_max = Defaults::Enemies::Square::ROTATION_DELTA_MAX;
-            type_mass = Defaults::Enemies::Square::MASS;
-            tracking_timer_ = 0.0F;
-            break;
-
-        case EnemyType::PINWHEEL:
-            shape_file = Defaults::Enemies::Pinwheel::SHAPE_FILE;
-            base_speed = Defaults::Enemies::Pinwheel::SPEED;
-            rotation_delta_min = Defaults::Enemies::Pinwheel::ROTATION_DELTA_MIN;
-            rotation_delta_max = Defaults::Enemies::Pinwheel::ROTATION_DELTA_MAX;
-            type_mass = Defaults::Enemies::Pinwheel::MASS;
-            break;
-
-        default:
-            std::cerr << "[Enemy] Error: tipo desconocido ("
-                      << static_cast<int>(type_) << "), usando PENTAGON\n";
-            shape_file = Defaults::Enemies::Pentagon::SHAPE_FILE;
-            base_speed = Defaults::Enemies::Pentagon::SPEED;
-            rotation_delta_min = Defaults::Enemies::Pentagon::ROTATION_DELTA_MIN;
-            rotation_delta_max = Defaults::Enemies::Pentagon::ROTATION_DELTA_MAX;
-            break;
+    if (type_ == EnemyType::SQUARE) {
+        tracking_timer_ = 0.0F;
+        tracking_strength_ = cfg.behavior.tracking_strength;
     }
 
-    body_.setMass(type_mass);
-    body_.radius = Defaults::Entities::ENEMY_RADIUS;
-
-    // Cargar shape
-    shape_ = Graphics::ShapeLoader::load(shape_file);
+    shape_ = Graphics::ShapeLoader::load(cfg.shape.path);
     if (!shape_ || !shape_->isValid()) {
-        std::cerr << "[Enemy] Error: no se ha podido cargar " << shape_file << '\n';
+        std::cerr << "[Enemy] Error: no se ha podido cargar " << cfg.shape.path << '\n';
     }
 
-    // Posición aleatoria con comprobación de seguridad
+    // Radi de col·lisió derivat del cercle circumscrit de la shape.
+    const float BOUNDING = (shape_ != nullptr) ? shape_->getBoundingRadius() : 0.0F;
+    collision_radius_ = BOUNDING * cfg.shape.scale * cfg.shape.collision_factor;
+
+    body_.setMass(cfg.physics.mass);
+    body_.radius = collision_radius_;
+    body_.restitution = cfg.physics.restitution;
+    body_.linear_damping = cfg.physics.linear_damping;
+    body_.angular_damping = cfg.physics.angular_damping;
+
+    // Posició aleatòria amb comprovació de safety_distance.
     float min_x;
     float max_x;
     float min_y;
     float max_y;
-    Constants::getSafePlayAreaBounds(Defaults::Entities::ENEMY_RADIUS, min_x, max_x, min_y, max_y);
+    Constants::getSafePlayAreaBounds(collision_radius_, min_x, max_x, min_y, max_y);
 
     if (ship_pos != nullptr) {
         bool found_safe_position = false;
         for (int attempt = 0; attempt < Defaults::Enemies::Spawn::MAX_SPAWN_ATTEMPTS; attempt++) {
             float candidate_x;
             float candidate_y;
-            if (attemptSafeSpawn(*ship_pos, candidate_x, candidate_y)) {
+            if (attemptSafeSpawn(*ship_pos, collision_radius_, cfg.spawn.safety_distance, candidate_x, candidate_y)) {
                 center_.x = candidate_x;
                 center_.y = candidate_y;
                 found_safe_position = true;
@@ -141,32 +116,26 @@ void Enemy::init(EnemyType type, const Vec2* ship_pos) {
         center_.y = static_cast<float>((std::rand() % RANGE_Y) + static_cast<int>(min_y));
     }
 
-    // Dirección inicial aleatoria, velocidad escalar según tipo
-    const float ANGLE_INICIAL = (std::rand() % 360) * Constants::PI / 180.0F;
-    setVelocityFromAngle(ANGLE_INICIAL, base_speed);
+    const float ANGLE_INICIAL = static_cast<float>(std::rand() % 360) * Constants::PI / 180.0F;
+    setVelocityFromAngle(ANGLE_INICIAL, cfg.physics.speed);
 
-    // Sincronizar body_ con posición inicial
     body_.position = center_;
     body_.angle = 0.0F;
     body_.angular_velocity = 0.0F;
     body_.clearAccumulators();
 
-    // Rotación visual aleatoria (independiente del body)
-    const float ROTATION_DELTA_RANGE = rotation_delta_max - rotation_delta_min;
-    rotation_delta_ = rotation_delta_min + ((static_cast<float>(std::rand()) / static_cast<float>(RAND_MAX)) * ROTATION_DELTA_RANGE);
+    // Rotació visual aleatòria dins del rang del tipus
+    rotation_delta_ = randRange(cfg.physics.rotation_delta_min, cfg.physics.rotation_delta_max);
     rotation_ = 0.0F;
 
-    // Estado de animación
     animation_ = EnemyAnimation();
     animation_.rotation_delta_base = rotation_delta_;
     animation_.rotation_delta_target = rotation_delta_;
     animation_.rotation_delta_t = 1.0F;
 
-    // Invulnerabilidad post-spawn
-    invulnerability_timer_ = Defaults::Enemies::Spawn::INVULNERABILITY_DURATION;
-    brightness_ = Defaults::Enemies::Spawn::INVULNERABILITY_BRIGHTNESS_START;
+    invulnerability_timer_ = cfg.spawn.invulnerability_duration;
+    brightness_ = cfg.spawn.invulnerability_brightness_start;
 
-    // Timer para próximo cambio de dirección (Pentagon)
     direction_change_timer_ = 0.0F;
 
     is_active_ = true;
@@ -177,8 +146,6 @@ void Enemy::update(float delta_time) {
         return;
     }
 
-    // Decremento de timer "herido"; al cruzar 0 marca expiración para que el
-    // system layer dispare la explosión diferida.
     wound_expired_this_frame_ = false;
     if (wounded_timer_ > 0.0F) {
         wounded_timer_ -= delta_time;
@@ -188,25 +155,24 @@ void Enemy::update(float delta_time) {
         }
     }
 
-    // Decremento de invulnerabilidad + LERP de brightness
     if (invulnerability_timer_ > 0.0F) {
         invulnerability_timer_ -= delta_time;
         invulnerability_timer_ = std::max(invulnerability_timer_, 0.0F);
 
-        const float T_INV = invulnerability_timer_ / Defaults::Enemies::Spawn::INVULNERABILITY_DURATION;
+        const float T_INV = invulnerability_timer_ / config_->spawn.invulnerability_duration;
         const float T = 1.0F - T_INV;
         const float SMOOTH_T = T * T * (3.0F - (2.0F * T));
-        constexpr float START = Defaults::Enemies::Spawn::INVULNERABILITY_BRIGHTNESS_START;
-        constexpr float END = Defaults::Enemies::Spawn::INVULNERABILITY_BRIGHTNESS_END;
+        const float START = config_->spawn.invulnerability_brightness_start;
+        const float END = config_->spawn.invulnerability_brightness_end;
         brightness_ = START + ((END - START) * SMOOTH_T);
     }
 
-    // Comportamiento por tipo (ajusta body_.velocity, NO mueve posición).
-    // Skip cuando está herido: el enemy és un "cos mort" inert, només
-    // respon a la inèrcia del impulse rebut i a les col·lisions físiques.
     if (!isWounded()) {
         switch (type_) {
             case EnemyType::PENTAGON:
+            case EnemyType::STAR:
+                // STAR reusa el zigzag esquivador de Pentagon. Si en el futur
+                // vol comportament propi, separa-li el cas.
                 behaviorPentagon(delta_time);
                 break;
             case EnemyType::SQUARE:
@@ -218,15 +184,12 @@ void Enemy::update(float delta_time) {
         }
     }
 
-    // Animaciones (palpitación + rotación acelerada)
     updateAnimation(delta_time);
 
-    // Rotación visual (decoración, no afecta movimiento)
     rotation_ += rotation_delta_ * delta_time;
 }
 
 void Enemy::postUpdate(float /*delta_time*/) {
-    // Sincronizar mirror tras la integración del world.
     if (is_active_) {
         center_ = body_.position;
     }
@@ -236,27 +199,14 @@ void Enemy::draw() const {
     if (!is_active_ || !shape_) {
         return;
     }
-    const float SCALE = computeCurrentScale();
-    SDL_Color color{};
-    switch (type_) {
-        case EnemyType::PENTAGON:
-            color = Defaults::Palette::PENTAGON;
-            break;
-        case EnemyType::SQUARE:
-            color = Defaults::Palette::SQUARE;
-            break;
-        case EnemyType::PINWHEEL:
-            color = Defaults::Palette::PINWHEEL;
-            break;
-    }
+    const float SCALE = config_->shape.scale * computeCurrentScale();
+    SDL_Color color = config_->colors.normal;
 
-    // Parpadeo dorado mientras está herido: alterna color de tipo ↔ dorado
-    // a Wounded::BLINK_HZ usando el timer (fmod sobre el periodo).
     if (wounded_timer_ > 0.0F) {
-        const float CYCLE = 1.0F / Defaults::Enemies::Wounded::BLINK_HZ;
+        const float CYCLE = 1.0F / config_->wounded.blink_hz;
         const float T = std::fmod(wounded_timer_, CYCLE);
         if (T < (CYCLE / 2.0F)) {
-            color = Defaults::Palette::WOUNDED;
+            color = config_->colors.wounded;
         }
     }
 
@@ -267,17 +217,15 @@ void Enemy::destroy() {
     is_active_ = false;
     body_.velocity = Vec2{};
     body_.angular_velocity = 0.0F;
-    body_.radius = 0.0F;  // No colisiona mientras está inactivo
+    body_.radius = 0.0F;
     wounded_timer_ = 0.0F;
     wound_expired_this_frame_ = false;
     last_hit_by_ = 0xFF;
 }
 
 void Enemy::hurt(uint8_t shooter_id) {
-    wounded_timer_ = Defaults::Enemies::Wounded::DURATION;
+    wounded_timer_ = config_->wounded.duration;
     last_hit_by_ = shooter_id;
-    // El so HIT ara el reprodueix la bala quan es trenca en debris
-    // (Systems::Collision::breakBullet), no l'enemic en entrar a HURT.
 }
 
 void Enemy::applyImpulse(const Vec2& impulse) {
@@ -285,13 +233,11 @@ void Enemy::applyImpulse(const Vec2& impulse) {
 }
 
 void Enemy::setVelocity(float speed) {
-    // Mantener la dirección actual del body, cambiar solo la magnitud.
     const float CURRENT_SPEED = body_.velocity.length();
     if (CURRENT_SPEED > 0.0F) {
         body_.velocity = body_.velocity * (speed / CURRENT_SPEED);
     } else {
-        // Sin dirección actual: usar ángulo aleatorio
-        const float A = (std::rand() % 360) * Constants::PI / 180.0F;
+        const float A = static_cast<float>(std::rand() % 360) * Constants::PI / 180.0F;
         setVelocityFromAngle(A, speed);
     }
 }
@@ -300,19 +246,14 @@ void Enemy::setVelocityFromAngle(float angle_movement, float speed) {
     body_.velocity = angleToDirection(angle_movement) * speed;
 }
 
-// PENTAGON: zigzag esquivador. Cambios de dirección periódicos (probabilísticos)
-// en lugar de detectar paredes; el rebote contra muros lo hace PhysicsWorld
-// con restitution=1.0.
+// PENTAGON: zigzag esquivador. Canvis de direcció periòdics (probabilístics)
+// en lloc de detectar parets; el rebot contra murs el fa PhysicsWorld.
 void Enemy::behaviorPentagon(float delta_time) {
     direction_change_timer_ += delta_time;
 
-    // Probabilidad de zigzag por segundo (calibrada para sensación equivalente
-    // a la versión vieja que disparaba en cada toque de pared).
-    const float RAND_VAL = static_cast<float>(std::rand()) / static_cast<float>(RAND_MAX);
-    if (RAND_VAL < Defaults::Enemies::Pentagon::ZIGZAG_PROB_PER_SECOND * delta_time) {
+    if (randFloat01() < config_->behavior.zigzag_prob_per_second * delta_time) {
         const float CURRENT_ANGLE = velocityToAngle(body_.velocity);
-        const float DELTA = (static_cast<float>(std::rand()) / static_cast<float>(RAND_MAX)) *
-            Defaults::Enemies::Pentagon::ANGLE_CHANGE_MAX;
+        const float DELTA = randFloat01() * config_->behavior.angle_change_max;
         const float NEW_ANGLE = CURRENT_ANGLE + ((std::rand() % 2 == 0) ? DELTA : -DELTA);
         const float SPEED = body_.velocity.length();
         setVelocityFromAngle(NEW_ANGLE, SPEED);
@@ -320,12 +261,11 @@ void Enemy::behaviorPentagon(float delta_time) {
     }
 }
 
-// SQUARE: tracking discreto cada TRACKING_INTERVAL. Ajusta dirección
-// hacia el ship mezclando con tracking_strength_.
+// SQUARE: tracking discret cap a la nau cada N segons.
 void Enemy::behaviorSquare(float delta_time) {
     tracking_timer_ += delta_time;
 
-    if (tracking_timer_ >= Defaults::Enemies::Square::TRACKING_INTERVAL && ship_position_ != nullptr) {
+    if (tracking_timer_ >= config_->behavior.tracking_interval && ship_position_ != nullptr) {
         tracking_timer_ = 0.0F;
 
         const Vec2 TO_SHIP = *ship_position_ - center_;
@@ -335,11 +275,9 @@ void Enemy::behaviorSquare(float delta_time) {
             const float SPEED = body_.velocity.length();
             const Vec2 DESIRED_VEL = DESIRED_DIR * SPEED;
 
-            // Mezcla LERP: velocidad actual con la deseada según tracking_strength_.
             body_.velocity = (body_.velocity * (1.0F - tracking_strength_)) +
                 (DESIRED_VEL * tracking_strength_);
 
-            // Renormalizar a la velocidad escalar original
             const float NEW_SPEED = body_.velocity.length();
             if (NEW_SPEED > 0.0F) {
                 body_.velocity = body_.velocity * (SPEED / NEW_SPEED);
@@ -348,21 +286,17 @@ void Enemy::behaviorSquare(float delta_time) {
     }
 }
 
-// PINWHEEL: movimiento recto + boost de rotación visual cerca del ship.
-// Sin tracking — solo cambios de dirección raros (igual que Pentagon pero
-// con probabilidad mucho menor).
+// PINWHEEL: movement rectilini + boost de rotació visual prop del ship.
 void Enemy::behaviorPinwheel(float /*delta_time*/) {
-    // Boost de rotación visual por proximidad al ship
     if (ship_position_ != nullptr) {
         const Vec2 TO_SHIP = *ship_position_ - center_;
         const float DIST = TO_SHIP.length();
-        if (DIST < Defaults::Enemies::Pinwheel::PROXIMITY_DISTANCE) {
-            rotation_delta_ = animation_.rotation_delta_base * Defaults::Enemies::Pinwheel::ROTATION_DELTA_PROXIMITY_MULTIPLIER;
+        if (DIST < config_->behavior.proximity_distance) {
+            rotation_delta_ = animation_.rotation_delta_base * config_->behavior.rotation_proximity_multiplier;
         } else {
             rotation_delta_ = animation_.rotation_delta_base;
         }
     }
-    // Movimiento lineal puro: el world se encarga de integrar y rebotar.
 }
 
 void Enemy::updateAnimation(float delta_time) {
@@ -371,38 +305,26 @@ void Enemy::updateAnimation(float delta_time) {
 }
 
 void Enemy::updatePulse(float delta_time) {
+    const auto& cfg = config_->animation.pulse;
     if (animation_.pulse_active) {
         animation_.pulse_phase += 2.0F * Constants::PI * animation_.pulse_frequency * delta_time;
         animation_.pulse_time_remaining -= delta_time;
         if (animation_.pulse_time_remaining <= 0.0F) {
             animation_.pulse_active = false;
         }
-    } else {
-        const float RAND_VAL = static_cast<float>(std::rand()) / static_cast<float>(RAND_MAX);
-        const float TRIGGER_PROB = Defaults::Enemies::Animation::PULSE_TRIGGER_PROB * delta_time;
-        if (RAND_VAL < TRIGGER_PROB) {
-            animation_.pulse_active = true;
-            animation_.pulse_phase = 0.0F;
-
-            const float FREQ_RANGE = Defaults::Enemies::Animation::PULSE_FREQ_MAX -
-                Defaults::Enemies::Animation::PULSE_FREQ_MIN;
-            animation_.pulse_frequency = Defaults::Enemies::Animation::PULSE_FREQ_MIN +
-                ((static_cast<float>(std::rand()) / static_cast<float>(RAND_MAX)) * FREQ_RANGE);
-
-            const float AMP_RANGE = Defaults::Enemies::Animation::PULSE_AMPLITUD_MAX -
-                Defaults::Enemies::Animation::PULSE_AMPLITUD_MIN;
-            animation_.pulse_amplitude = Defaults::Enemies::Animation::PULSE_AMPLITUD_MIN +
-                ((static_cast<float>(std::rand()) / static_cast<float>(RAND_MAX)) * AMP_RANGE);
-
-            const float DUR_RANGE = Defaults::Enemies::Animation::PULSE_DURATION_MAX -
-                Defaults::Enemies::Animation::PULSE_DURATION_MIN;
-            animation_.pulse_time_remaining = Defaults::Enemies::Animation::PULSE_DURATION_MIN +
-                ((static_cast<float>(std::rand()) / static_cast<float>(RAND_MAX)) * DUR_RANGE);
-        }
+        return;
+    }
+    if (randFloat01() < cfg.trigger_prob_per_second * delta_time) {
+        animation_.pulse_active = true;
+        animation_.pulse_phase = 0.0F;
+        animation_.pulse_frequency = randRange(cfg.frequency_min, cfg.frequency_max);
+        animation_.pulse_amplitude = randRange(cfg.amplitude_min, cfg.amplitude_max);
+        animation_.pulse_time_remaining = randRange(cfg.duration_min, cfg.duration_max);
     }
 }
 
 void Enemy::updateRotationAcceleration(float delta_time) {
+    const auto& cfg = config_->animation.rotation_accel;
     if (animation_.rotation_delta_t < 1.0F) {
         animation_.rotation_delta_t += delta_time / animation_.rotation_delta_duration;
         if (animation_.rotation_delta_t >= 1.0F) {
@@ -416,34 +338,24 @@ void Enemy::updateRotationAcceleration(float delta_time) {
             const float TARGET = animation_.rotation_delta_target;
             rotation_delta_ = INITIAL + ((TARGET - INITIAL) * SMOOTH_T);
         }
-    } else {
-        const float RAND_VAL = static_cast<float>(std::rand()) / static_cast<float>(RAND_MAX);
-        const float TRIGGER_PROB = Defaults::Enemies::Animation::ROTATION_ACCEL_TRIGGER_PROB * delta_time;
-        if (RAND_VAL < TRIGGER_PROB) {
-            animation_.rotation_delta_t = 0.0F;
-
-            const float MULT_RANGE = Defaults::Enemies::Animation::ROTATION_ACCEL_MULTIPLIER_MAX -
-                Defaults::Enemies::Animation::ROTATION_ACCEL_MULTIPLIER_MIN;
-            const float MULTIPLIER = Defaults::Enemies::Animation::ROTATION_ACCEL_MULTIPLIER_MIN +
-                ((static_cast<float>(std::rand()) / static_cast<float>(RAND_MAX)) * MULT_RANGE);
-            animation_.rotation_delta_target = animation_.rotation_delta_base * MULTIPLIER;
-
-            const float DUR_RANGE = Defaults::Enemies::Animation::ROTATION_ACCEL_DURATION_MAX -
-                Defaults::Enemies::Animation::ROTATION_ACCEL_DURATION_MIN;
-            animation_.rotation_delta_duration = Defaults::Enemies::Animation::ROTATION_ACCEL_DURATION_MIN +
-                ((static_cast<float>(std::rand()) / static_cast<float>(RAND_MAX)) * DUR_RANGE);
-        }
+        return;
+    }
+    if (randFloat01() < cfg.trigger_prob_per_second * delta_time) {
+        animation_.rotation_delta_t = 0.0F;
+        const float MULTIPLIER = randRange(cfg.multiplier_min, cfg.multiplier_max);
+        animation_.rotation_delta_target = animation_.rotation_delta_base * MULTIPLIER;
+        animation_.rotation_delta_duration = randRange(cfg.duration_min, cfg.duration_max);
     }
 }
 
 auto Enemy::computeCurrentScale() const -> float {
     float scale = 1.0F;
     if (invulnerability_timer_ > 0.0F) {
-        const float T_INV = invulnerability_timer_ / Defaults::Enemies::Spawn::INVULNERABILITY_DURATION;
+        const float T_INV = invulnerability_timer_ / config_->spawn.invulnerability_duration;
         const float T = 1.0F - T_INV;
         const float SMOOTH_T = T * T * (3.0F - (2.0F * T));
-        constexpr float START = Defaults::Enemies::Spawn::INVULNERABILITY_SCALE_START;
-        constexpr float END = Defaults::Enemies::Spawn::INVULNERABILITY_SCALE_END;
+        const float START = config_->spawn.invulnerability_scale_start;
+        const float END = config_->spawn.invulnerability_scale_end;
         scale = START + ((END - START) * SMOOTH_T);
     } else if (animation_.pulse_active) {
         scale += animation_.pulse_amplitude * std::sin(animation_.pulse_phase);
@@ -452,16 +364,7 @@ auto Enemy::computeCurrentScale() const -> float {
 }
 
 auto Enemy::getBaseVelocity() const -> float {
-    switch (type_) {
-        case EnemyType::PENTAGON:
-            return Defaults::Enemies::Pentagon::SPEED;
-        case EnemyType::SQUARE:
-            return Defaults::Enemies::Square::SPEED;
-        case EnemyType::PINWHEEL:
-            return Defaults::Enemies::Pinwheel::SPEED;
-        default:
-            return Defaults::Enemies::Pentagon::SPEED;
-    }
+    return EnemyRegistry::get(type_).physics.speed;
 }
 
 auto Enemy::getBaseRotation() const -> float {
@@ -474,12 +377,12 @@ void Enemy::setTrackingStrength(float strength) {
     }
 }
 
-auto Enemy::attemptSafeSpawn(const Vec2& ship_pos, float& out_x, float& out_y) -> bool {
+auto Enemy::attemptSafeSpawn(const Vec2& ship_pos, float collision_radius, float safety_distance, float& out_x, float& out_y) -> bool {
     float min_x;
     float max_x;
     float min_y;
     float max_y;
-    Constants::getSafePlayAreaBounds(Defaults::Entities::ENEMY_RADIUS, min_x, max_x, min_y, max_y);
+    Constants::getSafePlayAreaBounds(collision_radius, min_x, max_x, min_y, max_y);
 
     const int RANGE_X = static_cast<int>(max_x - min_x);
     const int RANGE_Y = static_cast<int>(max_y - min_y);
@@ -489,5 +392,5 @@ auto Enemy::attemptSafeSpawn(const Vec2& ship_pos, float& out_x, float& out_y) -
     const float DX = out_x - ship_pos.x;
     const float DY = out_y - ship_pos.y;
     const float DISTANCE = std::sqrt((DX * DX) + (DY * DY));
-    return DISTANCE >= Defaults::Enemies::Spawn::SAFETY_DISTANCE;
+    return DISTANCE >= safety_distance;
 }

source/game/entities/enemy.hpp

@@ -6,7 +6,6 @@
 
 #include <cstdint>
 
-#include "core/defaults.hpp"
 #include "core/entities/entity.hpp"
 #include "core/types.hpp"
 
@@ -14,9 +13,13 @@
 enum class EnemyType : uint8_t {
     PENTAGON = 0,  // Pentágono esquivador (zigzag)
     SQUARE = 1,    // Square perseguidor (tracks ship)
-    PINWHEEL = 2   // Molinillo agresivo (rápido, girando)
+    PINWHEEL = 2,  // Molinillo agresivo (rápido, girando)
+    STAR = 3       // Estrella de 5 puntes (clone visual de Pentagon, comportament zigzag)
 };
 
+// Forward declaration — EnemyConfig viu a enemy_config.hpp i s'inclou només a enemy.cpp.
+struct EnemyConfig;
+
 // Estado de animación (palpitación + rotación acelerada)
 struct EnemyAnimation {
     // Palpitación (efecto respiración)
@@ -48,10 +51,8 @@ class Enemy : public Entities::Entity {
     // Override: Interfaz de Entity
     [[nodiscard]] auto isActive() const -> bool override { return is_active_; }
 
-    // Override: Interfaz de colisión
-    [[nodiscard]] auto getCollisionRadius() const -> float override {
-        return Defaults::Entities::ENEMY_RADIUS;
-    }
+    // Override: Interfaz de colisión. El radi ve del config carregat per tipus.
+    [[nodiscard]] auto getCollisionRadius() const -> float override { return collision_radius_; }
     // Mentre fa spawn (invulnerable) segueix col·lisionant: les bales el
     // poden abatre i el cos físic rebota amb la nau. El damage a la nau
     // segueix filtrat per `isInvulnerable()` al detectShipEnemy.
@@ -65,6 +66,9 @@ class Enemy : public Entities::Entity {
     // Getters
     [[nodiscard]] auto getRotationDelta() const -> float { return rotation_delta_; }
     [[nodiscard]] auto getVelocityVector() const -> Vec2 { return body_.velocity; }
+    // Configuració activa (carregada al darrer init()). Vàlida mentre l'enemic
+    // ha estat inicialitzat almenys un cop; abans és nullptr.
+    [[nodiscard]] auto getConfig() const -> const EnemyConfig& { return *config_; }
 
     // Set ship position reference for tracking behavior
     void setShipPosition(const Vec2* ship_pos) { ship_position_ = ship_pos; }
@@ -101,29 +105,34 @@ class Enemy : public Entities::Entity {
     void applyImpulse(const Vec2& impulse);
 
    private:
-    // Miembros específicos (heredados: renderer_, shape_, center_, angle_, brightness_, body_).
-    // Inicializados en la declaración: el ctor por defecto deja al enemy en estado "inactivo
-    // como pentágono", coherente con lo que harán init() o el ctor con renderer al activarlo.
-    float rotation_delta_{0.0F};  // Velocidad angular visual (rad/s) — solo decoración, separada de body_.angular_velocity
-    float rotation_{0.0F};        // Rotación visual acumulada (no afecta movimiento)
+    // Configuració carregada per tipus (apunta a una entrada de EnemyRegistry).
+    // nullptr abans del primer init(); per això getConfig() només és vàlid post-init.
+    const EnemyConfig* config_{nullptr};
+
+    // Cache local del radi (per evitar dereferenciar config_ a getCollisionRadius);
+    // s'actualitza a init() segons el tipus.
+    float collision_radius_{0.0F};
+
+    float rotation_delta_{0.0F};  // Velocidad angular visual (rad/s)
+    float rotation_{0.0F};        // Rotación visual acumulada
     bool is_active_{false};
 
     EnemyType type_{EnemyType::PENTAGON};
     EnemyAnimation animation_;
 
     // Comportamiento type-specific
-    float tracking_timer_{0.0F};          // Quadrat: tiempo desde último update de dirección
-    const Vec2* ship_position_{nullptr};  // Puntero a posición de la nave (para tracking)
-    float tracking_strength_{0.0F};       // Quadrat: intensidad de tracking (0.0-1.5), default 0.5
-    float direction_change_timer_{0.0F};  // Pentagon: tiempo para próximo cambio de dirección
+    float tracking_timer_{0.0F};
+    const Vec2* ship_position_{nullptr};
+    float tracking_strength_{0.0F};
+    float direction_change_timer_{0.0F};
 
     // Invulnerabilidad post-spawn
     float invulnerability_timer_{0.0F};
 
-    // Estado "herido": timer cuenta atrás; al cruzar 0 se marca expiración.
+    // Estado "herido"
     float wounded_timer_{0.0F};
     bool wound_expired_this_frame_{false};
-    uint8_t last_hit_by_{0xFF};  // 0xFF = sin atribución
+    uint8_t last_hit_by_{0xFF};
 
     // Métodos privados
     void updateAnimation(float delta_time);
@@ -133,8 +142,8 @@ class Enemy : public Entities::Entity {
     void behaviorSquare(float delta_time);
     void behaviorPinwheel(float delta_time);
     [[nodiscard]] auto computeCurrentScale() const -> float;
-    // Estático: solo opera sobre ship_pos pasado; no consulta estado del enemy.
-    static auto attemptSafeSpawn(const Vec2& ship_pos, float& out_x, float& out_y) -> bool;
+    // Static: passa els paràmetres com a args per no acoblar a *this.
+    static auto attemptSafeSpawn(const Vec2& ship_pos, float collision_radius, float safety_distance, float& out_x, float& out_y) -> bool;
 
     // Helper: setear body_.velocity desde un ángulo y magnitud.
     // angle_movement=0 apunta hacia arriba (eje Y negativo SDL).

source/game/entities/enemy_config.cpp

@@ -0,0 +1,277 @@
+// enemy_config.cpp - Implementació del parser de EnemyConfig
+// © 2026 JailDesigner
+
+#include "game/entities/enemy_config.hpp"
+
+#include <cstdint>
+#include <exception>
+#include <iostream>
+#include <string>
+
+namespace {
+
+    auto parseColor(const fkyaml::node& node, SDL_Color& out) -> bool {
+        if (!node.is_sequence() || node.size() != 3) {
+            return false;
+        }
+        const auto R = node[0].get_value<uint32_t>();
+        const auto G = node[1].get_value<uint32_t>();
+        const auto B = node[2].get_value<uint32_t>();
+        out = SDL_Color{
+            .r = static_cast<uint8_t>(R),
+            .g = static_cast<uint8_t>(G),
+            .b = static_cast<uint8_t>(B),
+            .a = 255};
+        return true;
+    }
+
+    auto aiTypeFromString(const std::string& s) -> std::optional<EnemyType> {
+        if (s == "pentagon") { return EnemyType::PENTAGON; }
+        if (s == "square") { return EnemyType::SQUARE; }
+        if (s == "pinwheel") { return EnemyType::PINWHEEL; }
+        if (s == "star") { return EnemyType::STAR; }
+        return std::nullopt;
+    }
+
+    // Cada parseXxx valida + omple la sub-struct corresponent. Retornen false
+    // amb log si falta un camp requerit. Separar-los baixa la complexitat
+    // cognitiva del fromYaml() principal.
+
+    auto parseAiType(const fkyaml::node& node, EnemyType expected, const std::string& name, EnemyType& out) -> bool {
+        if (!node.contains("ai_type")) {
+            std::cerr << "[EnemyConfig] Error: falta 'ai_type' a " << name << '\n';
+            return false;
+        }
+        const auto AI_STR = node["ai_type"].get_value<std::string>();
+        const auto PARSED = aiTypeFromString(AI_STR);
+        if (!PARSED) {
+            std::cerr << "[EnemyConfig] Error: ai_type desconegut '" << AI_STR << "' a " << name << '\n';
+            return false;
+        }
+        if (*PARSED != expected) {
+            std::cerr << "[EnemyConfig] Error: ai_type '" << AI_STR
+                      << "' no coincideix amb el tipus esperat (per directori) a " << name << '\n';
+            return false;
+        }
+        out = *PARSED;
+        return true;
+    }
+
+    auto parseShape(const fkyaml::node& node, const std::string& name, EnemyConfig::ShapeCfg& out) -> bool {
+        if (!node.contains("shape") || !node["shape"].contains("path")) {
+            std::cerr << "[EnemyConfig] Error: falta 'shape.path' a " << name << '\n';
+            return false;
+        }
+        const auto& shape = node["shape"];
+        out.path = shape["path"].get_value<std::string>();
+        out.scale = shape.contains("scale") ? shape["scale"].get_value<float>() : 1.0F;
+        out.collision_factor = shape.contains("collision_factor")
+            ? shape["collision_factor"].get_value<float>()
+            : 1.0F;
+        return true;
+    }
+
+    auto parsePhysics(const fkyaml::node& node, const std::string& name, EnemyConfig::PhysicsCfg& out) -> bool {
+        if (!node.contains("physics")) {
+            std::cerr << "[EnemyConfig] Error: falta 'physics' a " << name << '\n';
+            return false;
+        }
+        const auto& p = node["physics"];
+        out.mass = p["mass"].get_value<float>();
+        out.speed = p["speed"].get_value<float>();
+        out.rotation_delta_min = p["rotation_delta_min"].get_value<float>();
+        out.rotation_delta_max = p["rotation_delta_max"].get_value<float>();
+        out.restitution = p["restitution"].get_value<float>();
+        out.linear_damping = p["linear_damping"].get_value<float>();
+        out.angular_damping = p["angular_damping"].get_value<float>();
+        return true;
+    }
+
+    auto parseAnimation(const fkyaml::node& node, const std::string& name, EnemyConfig::AnimationCfg& out) -> bool {
+        if (!node.contains("animation") ||
+            !node["animation"].contains("pulse") ||
+            !node["animation"].contains("rotation_accel")) {
+            std::cerr << "[EnemyConfig] Error: falta 'animation.pulse' o 'animation.rotation_accel' a " << name << '\n';
+            return false;
+        }
+        const auto& p = node["animation"]["pulse"];
+        out.pulse.trigger_prob_per_second = p["trigger_prob_per_second"].get_value<float>();
+        out.pulse.duration_min = p["duration_min"].get_value<float>();
+        out.pulse.duration_max = p["duration_max"].get_value<float>();
+        out.pulse.amplitude_min = p["amplitude_min"].get_value<float>();
+        out.pulse.amplitude_max = p["amplitude_max"].get_value<float>();
+        out.pulse.frequency_min = p["frequency_min"].get_value<float>();
+        out.pulse.frequency_max = p["frequency_max"].get_value<float>();
+
+        const auto& r = node["animation"]["rotation_accel"];
+        out.rotation_accel.trigger_prob_per_second = r["trigger_prob_per_second"].get_value<float>();
+        out.rotation_accel.duration_min = r["duration_min"].get_value<float>();
+        out.rotation_accel.duration_max = r["duration_max"].get_value<float>();
+        out.rotation_accel.multiplier_min = r["multiplier_min"].get_value<float>();
+        out.rotation_accel.multiplier_max = r["multiplier_max"].get_value<float>();
+        return true;
+    }
+
+    auto parseWounded(const fkyaml::node& node, const std::string& name, EnemyConfig::WoundedCfg& out) -> bool {
+        if (!node.contains("wounded")) {
+            std::cerr << "[EnemyConfig] Error: falta 'wounded' a " << name << '\n';
+            return false;
+        }
+        const auto& w = node["wounded"];
+        out.duration = w["duration"].get_value<float>();
+        out.blink_hz = w["blink_hz"].get_value<float>();
+        return true;
+    }
+
+    auto parseSpawn(const fkyaml::node& node, const std::string& name, EnemyConfig::SpawnCfg& out) -> bool {
+        if (!node.contains("spawn")) {
+            std::cerr << "[EnemyConfig] Error: falta 'spawn' a " << name << '\n';
+            return false;
+        }
+        const auto& s = node["spawn"];
+        out.invulnerability_duration = s["invulnerability_duration"].get_value<float>();
+        out.invulnerability_brightness_start = s["invulnerability_brightness_start"].get_value<float>();
+        out.invulnerability_brightness_end = s["invulnerability_brightness_end"].get_value<float>();
+        out.invulnerability_scale_start = s["invulnerability_scale_start"].get_value<float>();
+        out.invulnerability_scale_end = s["invulnerability_scale_end"].get_value<float>();
+        out.safety_distance = s["safety_distance"].get_value<float>();
+        return true;
+    }
+
+    // Tots els camps de behavior són opcionals; només l'AI corresponent els consumeix.
+    void parseBehavior(const fkyaml::node& node, EnemyConfig::BehaviorCfg& out) {
+        if (!node.contains("behavior")) {
+            return;
+        }
+        const auto& b = node["behavior"];
+        const auto READ_OPT = [&b](const char* key, float& dst) {
+            if (b.contains(key)) {
+                dst = b[key].get_value<float>();
+            }
+        };
+        READ_OPT("zigzag_prob_per_second", out.zigzag_prob_per_second);
+        READ_OPT("angle_change_max", out.angle_change_max);
+        READ_OPT("tracking_strength", out.tracking_strength);
+        READ_OPT("tracking_interval", out.tracking_interval);
+        READ_OPT("rotation_proximity_multiplier", out.rotation_proximity_multiplier);
+        READ_OPT("proximity_distance", out.proximity_distance);
+    }
+
+    auto parseColors(const fkyaml::node& node, const std::string& name, EnemyConfig::ColorsCfg& out) -> bool {
+        if (!node.contains("colors") ||
+            !parseColor(node["colors"]["normal"], out.normal) ||
+            !parseColor(node["colors"]["wounded"], out.wounded)) {
+            std::cerr << "[EnemyConfig] Error: 'colors.normal' / 'colors.wounded' no són [r,g,b] a "
+                      << name << '\n';
+            return false;
+        }
+        return true;
+    }
+
+    auto parseScore(const fkyaml::node& node, const std::string& name, int& out) -> bool {
+        if (!node.contains("score")) {
+            std::cerr << "[EnemyConfig] Error: falta 'score' a " << name << '\n';
+            return false;
+        }
+        out = node["score"].get_value<int>();
+        return true;
+    }
+
+    auto actionTypeFromString(const std::string& s) -> std::optional<EnemyActionType> {
+        if (s == "set_hurt") { return EnemyActionType::SET_HURT; }
+        if (s == "destroy") { return EnemyActionType::DESTROY; }
+        if (s == "add_score") { return EnemyActionType::ADD_SCORE; }
+        if (s == "create_debris") { return EnemyActionType::CREATE_DEBRIS; }
+        if (s == "create_fireworks") { return EnemyActionType::CREATE_FIREWORKS; }
+        if (s == "apply_impulse") { return EnemyActionType::APPLY_IMPULSE; }
+        return std::nullopt;
+    }
+
+    auto parseActionList(const fkyaml::node& list_node, const std::string& enemy_name, const char* event_name, std::vector<EnemyAction>& out) -> bool {
+        if (!list_node.is_sequence()) {
+            std::cerr << "[EnemyConfig] Error: '" << event_name << "' ha de ser una llista a "
+                      << enemy_name << '\n';
+            return false;
+        }
+        for (const auto& item : list_node) {
+            if (!item.contains("action")) {
+                std::cerr << "[EnemyConfig] Error: entrada sense 'action' a " << event_name
+                          << " (" << enemy_name << ")\n";
+                return false;
+            }
+            const auto STR = item["action"].get_value<std::string>();
+            const auto PARSED = actionTypeFromString(STR);
+            if (!PARSED) {
+                std::cerr << "[EnemyConfig] Error: acció desconeguda '" << STR << "' a "
+                          << event_name << " (" << enemy_name << ")\n";
+                return false;
+            }
+            out.push_back({*PARSED});
+        }
+        return true;
+    }
+
+    // Defaults: replica el flux hardcoded actual (set_hurt → destroy → score+debris+fireworks).
+    void fillLegacyDefaults(EnemyEventConfig& events) {
+        events.on_hit = {{EnemyActionType::SET_HURT}};
+        events.on_hurt_end = {{EnemyActionType::DESTROY}};
+        events.on_destroy = {
+            {EnemyActionType::ADD_SCORE},
+            {EnemyActionType::CREATE_DEBRIS},
+            {EnemyActionType::CREATE_FIREWORKS},
+        };
+    }
+
+    auto parseEvents(const fkyaml::node& node, const std::string& name, EnemyEventConfig& out) -> bool {
+        if (!node.contains("events")) {
+            fillLegacyDefaults(out);
+            return true;
+        }
+        const auto& e = node["events"];
+        if (e.contains("on_hit") && !parseActionList(e["on_hit"], name, "on_hit", out.on_hit)) {
+            return false;
+        }
+        if (e.contains("on_hurt_end") &&
+            !parseActionList(e["on_hurt_end"], name, "on_hurt_end", out.on_hurt_end)) {
+            return false;
+        }
+        if (e.contains("on_destroy") &&
+            !parseActionList(e["on_destroy"], name, "on_destroy", out.on_destroy)) {
+            return false;
+        }
+        // Validació: destroy no pot aparèixer dins on_destroy (recursió infinita).
+        for (const auto& a : out.on_destroy) {
+            if (a.type == EnemyActionType::DESTROY) {
+                std::cerr << "[EnemyConfig] Error: 'destroy' no pot aparèixer dins 'on_destroy' a "
+                          << name << " (recursió infinita)\n";
+                return false;
+            }
+        }
+        return true;
+    }
+
+}  // namespace
+
+auto EnemyConfig::fromYaml(const fkyaml::node& node, EnemyType expected_ai_type)
+    -> std::optional<EnemyConfig> {
+    try {
+        EnemyConfig cfg;
+        cfg.name = node.contains("name") ? node["name"].get_value<std::string>() : "enemy";
+
+        if (!parseAiType(node, expected_ai_type, cfg.name, cfg.ai_type)) { return std::nullopt; }
+        if (!parseShape(node, cfg.name, cfg.shape)) { return std::nullopt; }
+        if (!parsePhysics(node, cfg.name, cfg.physics)) { return std::nullopt; }
+        parseBehavior(node, cfg.behavior);
+        if (!parseAnimation(node, cfg.name, cfg.animation)) { return std::nullopt; }
+        if (!parseWounded(node, cfg.name, cfg.wounded)) { return std::nullopt; }
+        if (!parseSpawn(node, cfg.name, cfg.spawn)) { return std::nullopt; }
+        if (!parseColors(node, cfg.name, cfg.colors)) { return std::nullopt; }
+        if (!parseScore(node, cfg.name, cfg.score)) { return std::nullopt; }
+        if (!parseEvents(node, cfg.name, cfg.events)) { return std::nullopt; }
+
+        return cfg;
+    } catch (const std::exception& e) {
+        std::cerr << "[EnemyConfig] Excepció parsejant: " << e.what() << '\n';
+        return std::nullopt;
+    }
+}

source/game/entities/enemy_config.hpp

@@ -0,0 +1,108 @@
+// enemy_config.hpp - Configuració d'un tipus d'enemic carregada des de YAML
+// © 2026 JailDesigner
+//
+// Una instància per tipus (Pentagon/Square/Pinwheel), carregada un cop al
+// startup per EnemyRegistry i compartida entre totes les instàncies d'aquell
+// tipus. Estructura paral·lela a PlayerConfig.
+
+#pragma once
+
+#include <SDL3/SDL.h>
+
+#include <optional>
+#include <string>
+
+#include "external/fkyaml_node.hpp"
+#include "game/entities/enemy.hpp"  // EnemyType
+#include "game/entities/enemy_event.hpp"
+
+struct EnemyConfig {
+    struct ShapeCfg {
+        std::string path;
+        float scale;             // multiplicador visual + hitbox sobre la mida nativa del .shp
+        float collision_factor;  // ajust opcional del hitbox respecte el cercle circumscrit (default 1.0)
+    };
+
+    struct PhysicsCfg {
+        float mass;
+        float speed;
+        float rotation_delta_min;
+        float rotation_delta_max;
+        float restitution;     // rebot contra parets (1.0 = perfectament elàstic)
+        float linear_damping;  // fricció lineal (s^-1)
+        float angular_damping;
+    };
+
+    // Camps específics de cada AI. Els no aplicables a un tipus queden a 0.0F
+    // i no s'usen — el dispatch viu a Enemy::behaviorXxx.
+    struct BehaviorCfg {
+        // Pentagon
+        float zigzag_prob_per_second{0.0F};
+        float angle_change_max{0.0F};
+        // Square
+        float tracking_strength{0.0F};
+        float tracking_interval{0.0F};
+        // Pinwheel
+        float rotation_proximity_multiplier{0.0F};
+        float proximity_distance{0.0F};
+    };
+
+    // Animacions decoratives. Compartides estructuralment entre tots els tipus
+    // però amb valors propis per personalitzar la "personalitat" visual de cada un.
+    struct AnimationCfg {
+        struct PulseCfg {
+            float trigger_prob_per_second;  // probabilitat per segon d'iniciar un pulse
+            float duration_min;
+            float duration_max;
+            float amplitude_min;  // amplitud d'escala (±)
+            float amplitude_max;
+            float frequency_min;  // Hz
+            float frequency_max;
+        };
+        struct RotationAccelCfg {
+            float trigger_prob_per_second;
+            float duration_min;  // segons de transició al nou speed
+            float duration_max;
+            float multiplier_min;  // multiplicador sobre rotation_delta_base
+            float multiplier_max;
+        };
+        PulseCfg pulse;
+        RotationAccelCfg rotation_accel;
+    };
+
+    struct WoundedCfg {
+        float duration;  // segons en estat ferit abans d'explotar
+        float blink_hz;  // freqüència del parpelleig color normal ↔ wounded
+    };
+
+    struct SpawnCfg {
+        float invulnerability_duration;          // segons d'invulnerabilitat post-spawn
+        float invulnerability_brightness_start;  // brightness inicial (corba LERP)
+        float invulnerability_brightness_end;    // brightness final
+        float invulnerability_scale_start;       // escala inicial (corba LERP, 0 = invisible)
+        float invulnerability_scale_end;         // escala final (1 = mida nativa)
+        float safety_distance;                   // px mínim respecte al player al spawn
+    };
+
+    struct ColorsCfg {
+        SDL_Color normal;
+        SDL_Color wounded;
+    };
+
+    std::string name;
+    EnemyType ai_type;
+    ShapeCfg shape;
+    PhysicsCfg physics;
+    BehaviorCfg behavior;
+    AnimationCfg animation;
+    WoundedCfg wounded;
+    SpawnCfg spawn;
+    ColorsCfg colors;
+    int score;
+    EnemyEventConfig events;
+
+    // Parseja un descriptor d'enemic. expected_ai_type valida que ai_type del
+    // YAML coincideix amb el tipus que el caller espera (segons el directori).
+    static auto fromYaml(const fkyaml::node& node, EnemyType expected_ai_type)
+        -> std::optional<EnemyConfig>;
+};

source/game/entities/enemy_event.hpp

@@ -0,0 +1,48 @@
+// enemy_event.hpp - Sistema declaratiu d'events i accions per a enemics
+// © 2026 JailDesigner
+//
+// Cada enemic descriu al seu YAML què passa quan rep un event (on_hit,
+// on_hurt_end, on_destroy) com a llista d'accions. El motor només dispatcha;
+// el comportament viu a les dades.
+
+#pragma once
+
+#include <cstdint>
+#include <vector>
+
+enum class EnemyEventType : uint8_t {
+    ON_HIT,       // Impactat per una bala
+    ON_HURT_END,  // Timer wounded ha expirat aquest frame
+    ON_DESTROY,   // L'acció destroy s'està executant (efectes col·laterals)
+};
+
+enum class EnemyActionType : uint8_t {
+    SET_HURT,          // Entra estat wounded (o destrueix si ja era wounded)
+    DESTROY,           // Dispara on_destroy + desactiva físicament
+    ADD_SCORE,         // Suma config.score al shooter + floating score
+    CREATE_DEBRIS,     // Explosió de debris amb herència de velocitat
+    CREATE_FIREWORKS,  // Burst radial de firework
+    APPLY_IMPULSE,     // Aplica l'impuls de la bala impactant
+};
+
+struct EnemyAction {
+    EnemyActionType type;
+};
+
+struct EnemyEventConfig {
+    std::vector<EnemyAction> on_hit;
+    std::vector<EnemyAction> on_hurt_end;
+    std::vector<EnemyAction> on_destroy;
+
+    [[nodiscard]] auto getActions(EnemyEventType event) const -> const std::vector<EnemyAction>& {
+        switch (event) {
+            case EnemyEventType::ON_HIT:
+                return on_hit;
+            case EnemyEventType::ON_HURT_END:
+                return on_hurt_end;
+            case EnemyEventType::ON_DESTROY:
+                return on_destroy;
+        }
+        return on_hit;  // unreachable
+    }
+};

source/game/entities/enemy_registry.cpp

@@ -0,0 +1,66 @@
+// enemy_registry.cpp - Implementació del registre estàtic d'enemics
+// © 2026 JailDesigner
+
+#include "game/entities/enemy_registry.hpp"
+
+#include <cstdlib>
+#include <iostream>
+#include <string>
+
+#include "core/entities/entity_loader.hpp"
+
+EnemyConfig EnemyRegistry::pentagon_config;
+EnemyConfig EnemyRegistry::square_config;
+EnemyConfig EnemyRegistry::pinwheel_config;
+EnemyConfig EnemyRegistry::star_config;
+bool EnemyRegistry::loaded = false;
+
+namespace {
+
+    auto loadOne(const std::string& name, EnemyType expected_type, EnemyConfig& out) -> bool {
+        auto yaml = Entities::EntityLoader::load(name);
+        if (!yaml) {
+            std::cerr << "[EnemyRegistry] Error: no s'ha pogut carregar " << name << ".yaml\n";
+            return false;
+        }
+        auto cfg = EnemyConfig::fromYaml(*yaml, expected_type);
+        if (!cfg) {
+            std::cerr << "[EnemyRegistry] Error: format invàlid a " << name << ".yaml\n";
+            return false;
+        }
+        out = *cfg;
+        return true;
+    }
+
+}  // namespace
+
+auto EnemyRegistry::loadAll() -> bool {
+    const bool OK = loadOne("pentagon", EnemyType::PENTAGON, pentagon_config) &&
+        loadOne("square", EnemyType::SQUARE, square_config) &&
+        loadOne("pinwheel", EnemyType::PINWHEEL, pinwheel_config) &&
+        loadOne("star", EnemyType::STAR, star_config);
+    loaded = OK;
+    if (OK) {
+        std::cout << "[EnemyRegistry] 4 configuracions d'enemic carregades.\n";
+    }
+    return OK;
+}
+
+auto EnemyRegistry::get(EnemyType type) -> const EnemyConfig& {
+    if (!loaded) {
+        std::cerr << "[EnemyRegistry] FATAL: get() abans de loadAll()\n";
+        std::exit(EXIT_FAILURE);
+    }
+    switch (type) {
+        case EnemyType::PENTAGON:
+            return pentagon_config;
+        case EnemyType::SQUARE:
+            return square_config;
+        case EnemyType::PINWHEEL:
+            return pinwheel_config;
+        case EnemyType::STAR:
+            return star_config;
+    }
+    std::cerr << "[EnemyRegistry] FATAL: tipus desconegut\n";
+    std::exit(EXIT_FAILURE);
+}

source/game/entities/enemy_registry.hpp

@@ -0,0 +1,31 @@
+// enemy_registry.hpp - Registre estàtic de configuracions d'enemics per tipus
+// © 2026 JailDesigner
+//
+// Carrega els 3 fitxers YAML (pentagon, square, pinwheel) un cop al startup
+// i exposa el lookup per EnemyType. Pensat per a ser invocat des de
+// GameScene; si la càrrega falla, el caller decideix avortar.
+
+#pragma once
+
+#include "game/entities/enemy.hpp"
+#include "game/entities/enemy_config.hpp"
+
+class EnemyRegistry {
+   public:
+    EnemyRegistry() = delete;  // tot estàtic
+
+    // Carrega els 3 descriptors. Retorna true si tots tres s'han carregat
+    // i parsejat correctament. Cridar abans del primer get().
+    static auto loadAll() -> bool;
+
+    // Lookup. Cal haver cridat loadAll() abans. Si el tipus no s'ha carregat
+    // (loadAll fallida o no cridada), avorta amb log fatal.
+    static auto get(EnemyType type) -> const EnemyConfig&;
+
+   private:
+    static EnemyConfig pentagon_config;
+    static EnemyConfig square_config;
+    static EnemyConfig pinwheel_config;
+    static EnemyConfig star_config;
+    static bool loaded;
+};

source/game/entities/player_config.cpp

@@ -0,0 +1,111 @@
+// player_config.cpp - Implementació del parser de PlayerConfig
+// © 2026 JailDesigner
+
+#include "game/entities/player_config.hpp"
+
+#include <cstdint>
+#include <exception>
+#include <iostream>
+#include <string>
+
+namespace {
+
+    // Helper: extreu un SDL_Color d'una seqüència de 3 enters [r, g, b] del YAML.
+    // Retorna true si el format és vàlid.
+    auto parseColor(const fkyaml::node& node, SDL_Color& out) -> bool {
+        if (!node.is_sequence() || node.size() != 3) {
+            return false;
+        }
+        const auto R = node[0].get_value<uint32_t>();
+        const auto G = node[1].get_value<uint32_t>();
+        const auto B = node[2].get_value<uint32_t>();
+        out = SDL_Color{
+            .r = static_cast<uint8_t>(R),
+            .g = static_cast<uint8_t>(G),
+            .b = static_cast<uint8_t>(B),
+            .a = 255};
+        return true;
+    }
+
+}  // namespace
+
+auto PlayerConfig::fromYaml(const fkyaml::node& node) -> std::optional<PlayerConfig> {
+    try {
+        PlayerConfig cfg;
+
+        cfg.name = node.contains("name") ? node["name"].get_value<std::string>() : "player";
+
+        // shape
+        if (!node.contains("shape") || !node["shape"].contains("path")) {
+            std::cerr << "[PlayerConfig] Error: falta 'shape.path'" << '\n';
+            return std::nullopt;
+        }
+        const auto& shape = node["shape"];
+        cfg.shape.path = shape["path"].get_value<std::string>();
+        cfg.shape.scale = shape.contains("scale") ? shape["scale"].get_value<float>() : 1.0F;
+        cfg.shape.collision_factor = shape.contains("collision_factor")
+            ? shape["collision_factor"].get_value<float>()
+            : 1.0F;
+
+        // physics
+        if (!node.contains("physics")) {
+            std::cerr << "[PlayerConfig] Error: falta 'physics'" << '\n';
+            return std::nullopt;
+        }
+        const auto& physics = node["physics"];
+        cfg.physics.mass = physics["mass"].get_value<float>();
+        cfg.physics.restitution = physics["restitution"].get_value<float>();
+        cfg.physics.linear_damping = physics["linear_damping"].get_value<float>();
+        cfg.physics.angular_damping = physics["angular_damping"].get_value<float>();
+        cfg.physics.rotation_speed = physics["rotation_speed"].get_value<float>();
+        cfg.physics.acceleration = physics["acceleration"].get_value<float>();
+        cfg.physics.max_velocity = physics["max_velocity"].get_value<float>();
+        cfg.physics.death_impact_factor = physics["death_impact_factor"].get_value<float>();
+
+        // invulnerability
+        if (!node.contains("invulnerability")) {
+            std::cerr << "[PlayerConfig] Error: falta 'invulnerability'" << '\n';
+            return std::nullopt;
+        }
+        const auto& invul = node["invulnerability"];
+        cfg.invulnerability.duration = invul["duration"].get_value<float>();
+        cfg.invulnerability.blink_visible = invul["blink_visible"].get_value<float>();
+        cfg.invulnerability.blink_invisible = invul["blink_invisible"].get_value<float>();
+
+        // hurt
+        if (!node.contains("hurt")) {
+            std::cerr << "[PlayerConfig] Error: falta 'hurt'" << '\n';
+            return std::nullopt;
+        }
+        cfg.hurt.duration = node["hurt"]["duration"].get_value<float>();
+        cfg.hurt.blink_hz = node["hurt"]["blink_hz"].get_value<float>();
+
+        // visual_thrust
+        if (!node.contains("visual_thrust")) {
+            std::cerr << "[PlayerConfig] Error: falta 'visual_thrust'" << '\n';
+            return std::nullopt;
+        }
+        cfg.visual_thrust.push_divisor = node["visual_thrust"]["push_divisor"].get_value<float>();
+        cfg.visual_thrust.scale_divisor = node["visual_thrust"]["scale_divisor"].get_value<float>();
+
+        // colors
+        if (!node.contains("colors") ||
+            !parseColor(node["colors"]["normal"], cfg.colors.normal) ||
+            !parseColor(node["colors"]["hurt"], cfg.colors.hurt)) {
+            std::cerr << "[PlayerConfig] Error: 'colors.normal' / 'colors.hurt' no són seqüències [r,g,b]" << '\n';
+            return std::nullopt;
+        }
+
+        // weapon
+        if (!node.contains("weapon")) {
+            std::cerr << "[PlayerConfig] Error: falta 'weapon'" << '\n';
+            return std::nullopt;
+        }
+        cfg.weapon.bullet_speed = node["weapon"]["bullet_speed"].get_value<float>();
+
+        return cfg;
+    } catch (const std::exception& e) {
+        std::cerr << "[PlayerConfig] Excepció parsejant: " << e.what() << '\n';
+        return std::nullopt;
+    }
+}

source/game/entities/player_config.hpp

@@ -0,0 +1,73 @@
+// player_config.hpp - Configuració de la nau del player carregada des de YAML
+// © 2026 JailDesigner
+//
+// POD struct amb sub-structs per organitzar els paràmetres del jugador
+// (física, invulnerabilitat, hurt, empenta visual, colors, weapon). Es
+// construeix a partir d'un node fkyaml carregat per EntityLoader.
+
+#pragma once
+
+#include <SDL3/SDL.h>
+
+#include <optional>
+#include <string>
+
+#include "external/fkyaml_node.hpp"
+
+struct PlayerConfig {
+    struct ShapeCfg {
+        std::string path;
+        float scale;             // multiplicador visual + hitbox sobre la mida nativa del .shp
+        float collision_factor;  // ajust opcional del hitbox respecte el cercle circumscrit (default 1.0)
+    };
+
+    struct PhysicsCfg {
+        float mass;
+        float restitution;
+        float linear_damping;
+        float angular_damping;
+        float rotation_speed;       // rad/s
+        float acceleration;         // px/s^2 multiplicat per la massa
+        float max_velocity;         // px/s (clamp post-integració)
+        float death_impact_factor;  // [0..1] moment transferit a l'enemic al morir
+    };
+
+    struct InvulnerabilityCfg {
+        float duration;
+        float blink_visible;
+        float blink_invisible;
+    };
+
+    struct HurtCfg {
+        float duration;
+        float blink_hz;
+    };
+
+    struct VisualThrustCfg {
+        float push_divisor;
+        float scale_divisor;
+    };
+
+    struct ColorsCfg {
+        SDL_Color normal;
+        SDL_Color hurt;
+    };
+
+    struct WeaponCfg {
+        float bullet_speed;
+    };
+
+    std::string name;
+    ShapeCfg shape;
+    PhysicsCfg physics;
+    InvulnerabilityCfg invulnerability;
+    HurtCfg hurt;
+    VisualThrustCfg visual_thrust;
+    ColorsCfg colors;
+    WeaponCfg weapon;
+
+    // Construeix un PlayerConfig a partir del node YAML. Retorna std::nullopt
+    // si falten camps requerits o el format no és vàlid (el caller decideix
+    // si abortar).
+    static auto fromYaml(const fkyaml::node& node) -> std::optional<PlayerConfig>;
+};

source/game/entities/ship.cpp

@@ -9,6 +9,7 @@
 #include <cmath>
 #include <cstdint>
 #include <iostream>
+#include <utility>
 
 #include "core/audio/audio.hpp"
 #include "core/defaults.hpp"
@@ -20,27 +21,30 @@
 #include "core/types.hpp"
 #include "game/constants.hpp"
 
-Ship::Ship(Rendering::Renderer* renderer, const char* shape_file)
-    : Entity(renderer) {
-    // Brightness específico para naves
+Ship::Ship(Rendering::Renderer* renderer, PlayerConfig config, const char* shape_override)
+    : Entity(renderer),
+      config_(std::move(config)) {
     brightness_ = Defaults::Brightness::NAU;
 
-    // Configuración del cuerpo físico
-    body_.setMass(Defaults::Ship::MASS);
-    body_.radius = Defaults::Entities::SHIP_RADIUS;
-    body_.restitution = Defaults::Ship::RESTITUTION;
-    body_.linear_damping = Defaults::Ship::LINEAR_DAMPING;
-    body_.angular_damping = Defaults::Ship::ANGULAR_DAMPING;
-
-    // Cargar shape compartida desde archivo
-    shape_ = Graphics::ShapeLoader::load(shape_file);
+    // El shape pot venir del YAML o ser overridden (ex: P2 amb "ship2.shp").
+    const std::string SHAPE_PATH = (shape_override != nullptr) ? shape_override : config_.shape.path;
+    shape_ = Graphics::ShapeLoader::load(SHAPE_PATH);
     if (!shape_ || !shape_->isValid()) {
-        std::cerr << "[Ship] Error: no se ha podido cargar " << shape_file << '\n';
+        std::cerr << "[Ship] Error: no se ha podido cargar " << SHAPE_PATH << '\n';
     }
+
+    // Radi de col·lisió derivat del cercle circumscrit de la shape * scale * collision_factor.
+    const float BOUNDING = (shape_ != nullptr) ? shape_->getBoundingRadius() : 0.0F;
+    collision_radius_ = BOUNDING * config_.shape.scale * config_.shape.collision_factor;
+
+    body_.setMass(config_.physics.mass);
+    body_.radius = collision_radius_;
+    body_.restitution = config_.physics.restitution;
+    body_.linear_damping = config_.physics.linear_damping;
+    body_.angular_damping = config_.physics.angular_damping;
 }
 
 void Ship::init(const Vec2* spawn_point, bool activar_invulnerabilitat) {
-    // Posición inicial
     if (spawn_point != nullptr) {
         center_ = *spawn_point;
     } else {
@@ -50,34 +54,27 @@ void Ship::init(const Vec2* spawn_point, bool activar_invulnerabilitat) {
         center_ = {.x = center_x, .y = center_y};
     }
 
-    // Reset orientación
     angle_ = 0.0F;
 
-    // Sincronizar cuerpo físico con la posición/orientación inicial
     body_.position = center_;
     body_.angle = angle_;
     body_.velocity = Vec2{};
     body_.angular_velocity = 0.0F;
     body_.clearAccumulators();
 
-    // Activar invulnerabilidad solo si es respawn
-    invulnerable_timer_ = activar_invulnerabilitat ? Defaults::Ship::INVULNERABILITY_DURATION : 0.0F;
+    invulnerable_timer_ = activar_invulnerabilitat ? config_.invulnerability.duration : 0.0F;
     is_hit_ = false;
     hurt_timer_ = 0.0F;
     touching_enemy_prev_frame_ = false;
 }
 
 void Ship::processInput(float delta_time, uint8_t player_id) {
-    // Solo procesa input si la nave está viva
     if (is_hit_) {
         return;
     }
 
     auto* input = Input::get();
 
-    // Rotación: control directo del ángulo (no física, no inercial).
-    // Se actualiza también body_.angle para que el dibujado tras
-    // postUpdate refleje el cambio inmediatamente.
     const bool ROTATE_RIGHT = (player_id == 0)
         ? input->checkActionPlayer1(InputAction::RIGHT, Input::ALLOW_REPEAT)
         : input->checkActionPlayer2(InputAction::RIGHT, Input::ALLOW_REPEAT);
@@ -89,10 +86,10 @@ void Ship::processInput(float delta_time, uint8_t player_id) {
         : input->checkActionPlayer2(InputAction::THRUST, Input::ALLOW_REPEAT);
 
     if (ROTATE_RIGHT) {
-        body_.angle += Defaults::Physics::ROTATION_SPEED * delta_time;
+        body_.angle += config_.physics.rotation_speed * delta_time;
     }
     if (ROTATE_LEFT) {
-        body_.angle -= Defaults::Physics::ROTATION_SPEED * delta_time;
+        body_.angle -= config_.physics.rotation_speed * delta_time;
     }
 
     // Thrust: fuerza vectorial en la dirección de la nariz.
@@ -100,44 +97,36 @@ void Ship::processInput(float delta_time, uint8_t player_id) {
     if (THRUST) {
         const float DIR_X = std::cos(body_.angle - (Constants::PI / 2.0F));
         const float DIR_Y = std::sin(body_.angle - (Constants::PI / 2.0F));
-        // Fuerza = masa * aceleración: 10 kg * 400 px/s² = 4000 (unidades arcade)
-        const float MAGNITUDE = body_.mass * Defaults::Physics::ACCELERATION;
+        const float MAGNITUDE = body_.mass * config_.physics.acceleration;
         body_.applyForce(Vec2{.x = DIR_X * MAGNITUDE, .y = DIR_Y * MAGNITUDE});
     }
 }
 
 void Ship::update(float delta_time) {
-    // Solo update si la nave está viva
     if (is_hit_) {
         return;
     }
 
-    // Decrementar timer de invulnerabilidad
     if (invulnerable_timer_ > 0.0F) {
         invulnerable_timer_ -= delta_time;
         invulnerable_timer_ = std::max(invulnerable_timer_, 0.0F);
     }
 
-    // Decrementar timer d'estat HURT (a 0 → torna a normal sense efecte extern)
     if (hurt_timer_ > 0.0F) {
         hurt_timer_ -= delta_time;
         hurt_timer_ = std::max(hurt_timer_, 0.0F);
     }
 
-    // El movimiento real lo hace PhysicsWorld::update().
-    // Aquí solo lógica de estado.
-
     // Cap de velocidad: el thrust acumula fuerza sin límite; limitamos
     // la magnitud de body_.velocity tras aplicar fuerzas para preservar
     // el feel arcade del MAX_VELOCITY original.
     const float CURRENT_SPEED = body_.velocity.length();
-    if (CURRENT_SPEED > Defaults::Physics::MAX_VELOCITY) {
-        body_.velocity = body_.velocity * (Defaults::Physics::MAX_VELOCITY / CURRENT_SPEED);
+    if (CURRENT_SPEED > config_.physics.max_velocity) {
+        body_.velocity = body_.velocity * (config_.physics.max_velocity / CURRENT_SPEED);
     }
 }
 
 void Ship::postUpdate(float /*delta_time*/) {
-    // Sincronizar mirror desde body_ tras la integración del world.
     center_ = body_.position;
     angle_ = body_.angle;
 }
@@ -147,11 +136,10 @@ void Ship::draw() const {
         return;
     }
 
-    // Parpadeo si invulnerable
     if (isInvulnerable()) {
-        const float BLINK_CYCLE = Defaults::Ship::BLINK_VISIBLE_TIME + Defaults::Ship::BLINK_INVISIBLE_TIME;
+        const float BLINK_CYCLE = config_.invulnerability.blink_visible + config_.invulnerability.blink_invisible;
         const float TIME_IN_CYCLE = std::fmod(invulnerable_timer_, BLINK_CYCLE);
-        if (TIME_IN_CYCLE < Defaults::Ship::BLINK_INVISIBLE_TIME) {
+        if (TIME_IN_CYCLE < config_.invulnerability.blink_invisible) {
             return;
         }
     }
@@ -160,20 +148,19 @@ void Ship::draw() const {
         return;
     }
 
-    // Efecto visual de empuje: escala proporcional a la velocidad.
-    // 0..200 px/s → escala 1.0..1.5 (manteniendo la sensación del Pascal original).
+    // Efecte visual d'empenta (modulador sobre l'escala base del YAML).
     const float SPEED = getSpeed();
-    const float VISUAL_PUSH = SPEED / Defaults::Ship::VISUAL_PUSH_DIVISOR;
-    const float SCALE = 1.0F + (VISUAL_PUSH / Defaults::Ship::VISUAL_SCALE_DIVISOR);
+    const float VISUAL_PUSH = SPEED / config_.visual_thrust.push_divisor;
+    const float THRUST_MODULATOR = 1.0F + (VISUAL_PUSH / config_.visual_thrust.scale_divisor);
+    const float SCALE = config_.shape.scale * THRUST_MODULATOR;
 
-    // Parpelleig daurat mentre està ferida: alterna color normal ↔ color hurt
-    // a Hurt::BLINK_HZ (mateixa estètica que el wounded dels enemics).
-    SDL_Color color = color_normal_;
+    // Parpelleig daurat mentre està ferida: alterna color normal ↔ color hurt.
+    SDL_Color color = config_.colors.normal;
     if (hurt_timer_ > 0.0F) {
-        const float CYCLE = 1.0F / Defaults::Ship::Hurt::BLINK_HZ;
+        const float CYCLE = 1.0F / config_.hurt.blink_hz;
         const float T = std::fmod(hurt_timer_, CYCLE);
         if (T < (CYCLE / 2.0F)) {
-            color = color_hurt_;
+            color = config_.colors.hurt;
         }
     }
 
@@ -181,6 +168,6 @@ void Ship::draw() const {
 }
 
 void Ship::hurt() {
-    hurt_timer_ = Defaults::Ship::Hurt::DURATION;
+    hurt_timer_ = config_.hurt.duration;
     Audio::get()->playSound(Defaults::Sound::HURT, Audio::Group::GAME);
 }

source/game/entities/ship.hpp

@@ -6,15 +6,18 @@
 
 #include <cstdint>
 
-#include "core/defaults.hpp"
 #include "core/entities/entity.hpp"
 #include "core/types.hpp"
+#include "game/entities/player_config.hpp"
 
 class Ship : public Entities::Entity {
    public:
     Ship()
         : Entity(nullptr) {}
-    explicit Ship(Rendering::Renderer* renderer, const char* shape_file = "ship.shp");
+    // shape_override: si no és nullptr, substitueix config.shape.path
+    // (utilitzat per donar al P2 un model visual diferent compartint la
+    // mateixa configuració del player).
+    explicit Ship(Rendering::Renderer* renderer, PlayerConfig config, const char* shape_override = nullptr);
 
     void init() override { init(nullptr, false); }
     void init(const Vec2* spawn_point, bool activar_invulnerabilitat = false);
@@ -26,20 +29,18 @@ class Ship : public Entities::Entity {
     // Override: Interfaz de Entity
     [[nodiscard]] auto isActive() const -> bool override { return !is_hit_; }
 
-    // Override: Interfaz de colisión
-    [[nodiscard]] auto getCollisionRadius() const -> float override {
-        return Defaults::Entities::SHIP_RADIUS;
-    }
+    // Override: Interfaz de colisión. Derivat al ctor del bounding_radius del
+    // shape carregat × scale × collision_factor.
+    [[nodiscard]] auto getCollisionRadius() const -> float override { return collision_radius_; }
     [[nodiscard]] auto isCollidable() const -> bool override {
         return !is_hit_ && invulnerable_timer_ <= 0.0F;
     }
 
     // Getters
     [[nodiscard]] auto isInvulnerable() const -> bool { return invulnerable_timer_ > 0.0F; }
-    // Velocidad como vector cartesiano (ahora viene directa del body_).
     [[nodiscard]] auto getVelocityVector() const -> Vec2 { return body_.velocity; }
-    // Velocidad escalar (utilidad para draw y debugging).
     [[nodiscard]] auto getSpeed() const -> float { return body_.velocity.length(); }
+    [[nodiscard]] auto getConfig() const -> const PlayerConfig& { return config_; }
 
     // Setters
     void setCenter(const Vec2& nou_centre) {
@@ -65,17 +66,18 @@ class Ship : public Entities::Entity {
     void setTouchingEnemyPrevFrame(bool touching) { touching_enemy_prev_frame_ = touching; }
 
    private:
-    // Miembros específicos de Ship (heredados: renderer_, shape_, center_, angle_, brightness_, body_).
-    // Inicializados en la declaración: el ctor por defecto deja la nave "viva y sin invulnerabilidad",
-    // que es el estado coherente al que llevan tanto init() como el ctor con renderer.
+    // Configuració carregada des de YAML. Default-init zero permet el ctor
+    // per defecte (necessari per a `std::array<Ship, N>`); s'omple via
+    // copy/move-assignment quan GameScene crea la nau real.
+    PlayerConfig config_{};
+
+    // Radi de col·lisió derivat: shape.bounding_radius × shape.scale × shape.collision_factor.
+    float collision_radius_{0.0F};
+
     bool is_hit_{false};
     float invulnerable_timer_{0.0F};  // 0.0f = vulnerable, >0.0f = invulnerable
 
-    // Colors de la nau (propietats, prep per migració a YAML).
-    SDL_Color color_normal_{Defaults::Palette::SHIP};
-    SDL_Color color_hurt_{Defaults::Palette::WOUNDED};
-
-    // >0 → estat HURT (parpelleig color_normal_ ↔ color_hurt_).
+    // >0 → estat HURT (parpelleig color normal ↔ color hurt).
     float hurt_timer_{0.0F};
 
     // Edge-trigger: true si el frame anterior la nau ja estava en contacte amb un enemic.

source/game/scenes/game_scene.cpp

@@ -10,10 +10,14 @@
 #include <iostream>
 
 #include "core/audio/audio.hpp"
+#include "core/entities/entity_loader.hpp"
 #include "core/input/input.hpp"
 #include "core/locale/locale.hpp"
 #include "core/system/scene_context.hpp"
 #include "core/system/service_menu.hpp"
+#include "game/entities/bullet_registry.hpp"
+#include "game/entities/enemy_registry.hpp"
+#include "game/entities/player_config.hpp"
 #include "game/stage_system/stage_loader.hpp"
 #include "game/systems/collision_system.hpp"
 #include "game/systems/continue_system.hpp"
@@ -49,9 +53,36 @@ GameScene::GameScene(SDLManager& sdl, SceneContext& context)
     auto option = context_.consumeOption();
     (void)option;  // Suprimir warning de variable no usada
 
-    // Inicialitzar naves con renderer (P1=ship.shp, P2=ship2.shp)
-    ships_[0] = Ship(sdl.getRenderer(), "ship.shp");   // Jugador 1: nave estàndar
-    ships_[1] = Ship(sdl.getRenderer(), "ship2.shp");  // Jugador 2: interceptor con ales
+    // Carregar la configuració del player des de YAML. Sense fallback: si
+    // falla, abortem (la nau no és construïble sense paràmetres).
+    auto player_yaml = Entities::EntityLoader::load("player");
+    if (!player_yaml) {
+        std::cerr << "[GameScene] FATAL: no s'ha pogut carregar data/entities/player/player.yaml\n";
+        std::exit(EXIT_FAILURE);
+    }
+    auto player_config = PlayerConfig::fromYaml(*player_yaml);
+    if (!player_config) {
+        std::cerr << "[GameScene] FATAL: player.yaml mal format\n";
+        std::exit(EXIT_FAILURE);
+    }
+
+    // Carregar les configuracions dels 3 enemics. Sense fallback: si falla,
+    // abortem (els enemics no es poden construir sense els seus paràmetres).
+    if (!EnemyRegistry::loadAll()) {
+        std::cerr << "[GameScene] FATAL: no s'han pogut carregar els enemics YAML\n";
+        std::exit(EXIT_FAILURE);
+    }
+
+    // Carregar la configuració de la bala. Cal abans de construir el pool de
+    // bullets, ja que cada Bullet llegeix el registry al seu ctor.
+    if (!BulletRegistry::load()) {
+        std::cerr << "[GameScene] FATAL: no s'ha pogut carregar bullet.yaml\n";
+        std::exit(EXIT_FAILURE);
+    }
+
+    // Inicialitzar naves: P1 amb el shape del YAML, P2 amb override visual.
+    ships_[0] = Ship(sdl.getRenderer(), *player_config);               // Jugador 1: nau estàndard
+    ships_[1] = Ship(sdl.getRenderer(), *player_config, "ship2.shp");  // Jugador 2: interceptor amb ales
 
     // Inicialitzar balas con renderer
     std::ranges::fill(bullets_, Bullet(sdl.getRenderer()));
@@ -758,7 +789,7 @@ void GameScene::tocado(uint8_t player_id) {
             0.0F,  // sense herència angular
             0.0F,  // sin herencia visual
             Defaults::Sound::EXPLOSION2,
-            Defaults::Palette::SHIP,
+            ships_[player_id].getConfig().colors.normal,
             Defaults::Physics::Debris::ENEMY_LIFETIME,
             Defaults::Physics::Debris::ENEMY_FRICTION,
             Defaults::Physics::Debris::ENEMY_SEGMENT_MULTIPLIER);
@@ -944,7 +975,7 @@ void GameScene::fireBullet(uint8_t player_id) {
     const int START_IDX = player_id * SLOTS_PER_PLAYER;
     for (int i = START_IDX; i < START_IDX + SLOTS_PER_PLAYER; i++) {
         if (!bullets_[i].isActive()) {
-            bullets_[i].fire(fire_position, ship_angle, player_id);
+            bullets_[i].fire(fire_position, ship_angle, player_id, ships_[player_id].getConfig().weapon.bullet_speed);
             break;
         }
     }

source/game/stage_system/spawn_controller.cpp

@@ -136,7 +136,10 @@ namespace StageSystem {
         if (rand_val < config_->distribucio.pentagon + config_->distribucio.cuadrado) {
             return EnemyType::SQUARE;
         }
-        return EnemyType::PINWHEEL;
+        if (rand_val < config_->distribucio.pentagon + config_->distribucio.cuadrado + config_->distribucio.molinillo) {
+            return EnemyType::PINWHEEL;
+        }
+        return EnemyType::STAR;
     }
 
     void SpawnController::spawnEnemy(Enemy& enemy, EnemyType type, const Vec2* ship_pos) {

source/game/stage_system/stage_config.hpp

@@ -28,6 +28,7 @@ namespace StageSystem {
         uint8_t pentagon;   // 0-100
         uint8_t cuadrado;   // 0-100
         uint8_t molinillo;  // 0-100
+        uint8_t star{0};    // 0-100 (opcional al YAML; default 0 per compat amb stages antics)
                             // Suma ha de ser 100, validat en StageLoader
     };
 
@@ -59,7 +60,7 @@ namespace StageSystem {
             // el tipo; basta con confirmar que no es 0 (sentinela "sin asignar").
             return stage_id >= 1 &&
                 total_enemies > 0 && total_enemies <= 200 &&
-                distribucio.pentagon + distribucio.cuadrado + distribucio.molinillo == 100;
+                distribucio.pentagon + distribucio.cuadrado + distribucio.molinillo + distribucio.star == 100;
         }
     };
 

source/game/stage_system/stage_loader.cpp

@@ -19,241 +19,243 @@
 
 namespace StageSystem {
 
-auto StageLoader::load(const std::string& path) -> std::unique_ptr<StageSystemConfig> {
-    try {
-        // Normalize path: "data/stages/stages.yaml" → "stages/stages.yaml"
-        std::string normalized = path;
-        if (normalized.starts_with("data/")) {
-            normalized = normalized.substr(5);
-        }
+    auto StageLoader::load(const std::string& path) -> std::unique_ptr<StageSystemConfig> {
+        try {
+            // Normalize path: "data/stages/stages.yaml" → "stages/stages.yaml"
+            std::string normalized = path;
+            if (normalized.starts_with("data/")) {
+                normalized = normalized.substr(5);
+            }
 
-        // Load from resource system
-        std::vector<uint8_t> data = Resource::Helper::loadFile(normalized);
-        if (data.empty()) {
-            std::cerr << "[StageLoader] Error: no es pot load " << normalized << '\n';
-            return nullptr;
-        }
-
-        // Convert to string
-        std::string yaml_content(data.begin(), data.end());
-        std::stringstream stream(yaml_content);
-
-        // Parse YAML
-        fkyaml::node yaml = fkyaml::node::deserialize(stream);
-        auto config = std::make_unique<StageSystemConfig>();
-
-        // Parse metadata
-        if (!yaml.contains("metadata")) {
-            std::cerr << "[StageLoader] Error: falta camp 'metadata'" << '\n';
-            return nullptr;
-        }
-        if (!parseMetadata(yaml["metadata"], config->metadata)) {
-            return nullptr;
-        }
-
-        // Parse stages
-        if (!yaml.contains("stages")) {
-            std::cerr << "[StageLoader] Error: falta camp 'stages'" << '\n';
-            return nullptr;
-        }
-
-        if (!yaml["stages"].is_sequence()) {
-            std::cerr << "[StageLoader] Error: 'stages' ha de ser una list" << '\n';
-            return nullptr;
-        }
-
-        for (const auto& stage_yaml : yaml["stages"]) {
-            StageConfig stage;
-            if (!parseStage(stage_yaml, stage)) {
+            // Load from resource system
+            std::vector<uint8_t> data = Resource::Helper::loadFile(normalized);
+            if (data.empty()) {
+                std::cerr << "[StageLoader] Error: no es pot load " << normalized << '\n';
                 return nullptr;
             }
-            config->stages.push_back(stage);
-        }
 
-        // Validar configuración
-        if (!validateConfig(*config)) {
+            // Convert to string
+            std::string yaml_content(data.begin(), data.end());
+            std::stringstream stream(yaml_content);
+
+            // Parse YAML
+            fkyaml::node yaml = fkyaml::node::deserialize(stream);
+            auto config = std::make_unique<StageSystemConfig>();
+
+            // Parse metadata
+            if (!yaml.contains("metadata")) {
+                std::cerr << "[StageLoader] Error: falta camp 'metadata'" << '\n';
+                return nullptr;
+            }
+            if (!parseMetadata(yaml["metadata"], config->metadata)) {
+                return nullptr;
+            }
+
+            // Parse stages
+            if (!yaml.contains("stages")) {
+                std::cerr << "[StageLoader] Error: falta camp 'stages'" << '\n';
+                return nullptr;
+            }
+
+            if (!yaml["stages"].is_sequence()) {
+                std::cerr << "[StageLoader] Error: 'stages' ha de ser una list" << '\n';
+                return nullptr;
+            }
+
+            for (const auto& stage_yaml : yaml["stages"]) {
+                StageConfig stage;
+                if (!parseStage(stage_yaml, stage)) {
+                    return nullptr;
+                }
+                config->stages.push_back(stage);
+            }
+
+            // Validar configuración
+            if (!validateConfig(*config)) {
+                return nullptr;
+            }
+
+            std::cout << "[StageLoader] Carregats " << config->stages.size()
+                      << " stages correctament" << '\n';
+            return config;
+
+        } catch (const std::exception& e) {
+            std::cerr << "[StageLoader] Excepció: " << e.what() << '\n';
             return nullptr;
         }
-
-        std::cout << "[StageLoader] Carregats " << config->stages.size()
-                  << " stages correctament" << '\n';
-        return config;
-
-    } catch (const std::exception& e) {
-        std::cerr << "[StageLoader] Excepció: " << e.what() << '\n';
-        return nullptr;
     }
-}
 
-auto StageLoader::parseMetadata(const fkyaml::node& yaml, MetadataStages& meta) -> bool {
-    try {
-        if (!yaml.contains("version") || !yaml.contains("total_stages")) {
-            std::cerr << "[StageLoader] Error: metadata incompleta" << '\n';
+    auto StageLoader::parseMetadata(const fkyaml::node& yaml, MetadataStages& meta) -> bool {
+        try {
+            if (!yaml.contains("version") || !yaml.contains("total_stages")) {
+                std::cerr << "[StageLoader] Error: metadata incompleta" << '\n';
+                return false;
+            }
+
+            meta.version = yaml["version"].get_value<std::string>();
+            meta.total_stages = yaml["total_stages"].get_value<uint8_t>();
+            meta.descripcio = yaml.contains("description")
+                ? yaml["description"].get_value<std::string>()
+                : "";
+
+            return true;
+        } catch (const std::exception& e) {
+            std::cerr << "[StageLoader] Error parsing metadata: " << e.what() << '\n';
             return false;
         }
-
-        meta.version = yaml["version"].get_value<std::string>();
-        meta.total_stages = yaml["total_stages"].get_value<uint8_t>();
-        meta.descripcio = yaml.contains("description")
-            ? yaml["description"].get_value<std::string>()
-            : "";
-
-        return true;
-    } catch (const std::exception& e) {
-        std::cerr << "[StageLoader] Error parsing metadata: " << e.what() << '\n';
-        return false;
     }
-}
 
-auto StageLoader::parseStage(const fkyaml::node& yaml, StageConfig& stage) -> bool {
-    try {
-        if (!yaml.contains("stage_id") || !yaml.contains("total_enemies") ||
-            !yaml.contains("spawn_config") || !yaml.contains("enemy_distribution") ||
-            !yaml.contains("difficulty_multipliers")) {
-            std::cerr << "[StageLoader] Error: stage incompleta" << '\n';
+    auto StageLoader::parseStage(const fkyaml::node& yaml, StageConfig& stage) -> bool {
+        try {
+            if (!yaml.contains("stage_id") || !yaml.contains("total_enemies") ||
+                !yaml.contains("spawn_config") || !yaml.contains("enemy_distribution") ||
+                !yaml.contains("difficulty_multipliers")) {
+                std::cerr << "[StageLoader] Error: stage incompleta" << '\n';
+                return false;
+            }
+
+            stage.stage_id = yaml["stage_id"].get_value<uint8_t>();
+            stage.total_enemies = yaml["total_enemies"].get_value<uint8_t>();
+
+            if (!parseSpawnConfig(yaml["spawn_config"], stage.config_spawn)) {
+                return false;
+            }
+            if (!parseDistribution(yaml["enemy_distribution"], stage.distribucio)) {
+                return false;
+            }
+            if (!parseMultipliers(yaml["difficulty_multipliers"], stage.multiplicadors)) {
+                return false;
+            }
+
+            if (!stage.isValid()) {
+                std::cerr << "[StageLoader] Error: stage " << static_cast<int>(stage.stage_id)
+                          << " no es vàlid" << '\n';
+                return false;
+            }
+
+            return true;
+        } catch (const std::exception& e) {
+            std::cerr << "[StageLoader] Error parsing stage: " << e.what() << '\n';
             return false;
         }
-
-        stage.stage_id = yaml["stage_id"].get_value<uint8_t>();
-        stage.total_enemies = yaml["total_enemies"].get_value<uint8_t>();
-
-        if (!parseSpawnConfig(yaml["spawn_config"], stage.config_spawn)) {
-            return false;
-        }
-        if (!parseDistribution(yaml["enemy_distribution"], stage.distribucio)) {
-            return false;
-        }
-        if (!parseMultipliers(yaml["difficulty_multipliers"], stage.multiplicadors)) {
-            return false;
-        }
-
-        if (!stage.isValid()) {
-            std::cerr << "[StageLoader] Error: stage " << static_cast<int>(stage.stage_id)
-                      << " no es vàlid" << '\n';
-            return false;
-        }
-
-        return true;
-    } catch (const std::exception& e) {
-        std::cerr << "[StageLoader] Error parsing stage: " << e.what() << '\n';
-        return false;
     }
-}
 
-auto StageLoader::parseSpawnConfig(const fkyaml::node& yaml, ConfigSpawn& config) -> bool {
-    try {
-        if (!yaml.contains("mode") || !yaml.contains("initial_delay") ||
-            !yaml.contains("spawn_interval")) {
-            std::cerr << "[StageLoader] Error: spawn_config incompleta" << '\n';
+    auto StageLoader::parseSpawnConfig(const fkyaml::node& yaml, ConfigSpawn& config) -> bool {
+        try {
+            if (!yaml.contains("mode") || !yaml.contains("initial_delay") ||
+                !yaml.contains("spawn_interval")) {
+                std::cerr << "[StageLoader] Error: spawn_config incompleta" << '\n';
+                return false;
+            }
+
+            auto mode_str = yaml["mode"].get_value<std::string>();
+            config.mode = parseSpawnMode(mode_str);
+            config.delay_inicial = yaml["initial_delay"].get_value<float>();
+            config.interval_spawn = yaml["spawn_interval"].get_value<float>();
+
+            return true;
+        } catch (const std::exception& e) {
+            std::cerr << "[StageLoader] Error parsing spawn_config: " << e.what() << '\n';
             return false;
         }
-
-        auto mode_str = yaml["mode"].get_value<std::string>();
-        config.mode = parseSpawnMode(mode_str);
-        config.delay_inicial = yaml["initial_delay"].get_value<float>();
-        config.interval_spawn = yaml["spawn_interval"].get_value<float>();
-
-        return true;
-    } catch (const std::exception& e) {
-        std::cerr << "[StageLoader] Error parsing spawn_config: " << e.what() << '\n';
-        return false;
     }
-}
 
-auto StageLoader::parseDistribution(const fkyaml::node& yaml, DistribucioEnemics& dist) -> bool {
-    try {
-        if (!yaml.contains("pentagon") || !yaml.contains("cuadrado") ||
-            !yaml.contains("molinillo")) {
-            std::cerr << "[StageLoader] Error: enemy_distribution incompleta" << '\n';
+    auto StageLoader::parseDistribution(const fkyaml::node& yaml, DistribucioEnemics& dist) -> bool {
+        try {
+            if (!yaml.contains("pentagon") || !yaml.contains("cuadrado") ||
+                !yaml.contains("molinillo")) {
+                std::cerr << "[StageLoader] Error: enemy_distribution incompleta" << '\n';
+                return false;
+            }
+
+            dist.pentagon = yaml["pentagon"].get_value<uint8_t>();
+            dist.cuadrado = yaml["cuadrado"].get_value<uint8_t>();
+            dist.molinillo = yaml["molinillo"].get_value<uint8_t>();
+            // 'star' és opcional per compatibilitat amb stages antics (default 0).
+            dist.star = yaml.contains("star") ? yaml["star"].get_value<uint8_t>() : 0;
+
+            // Validar que suma 100
+            int sum = dist.pentagon + dist.cuadrado + dist.molinillo + dist.star;
+            if (sum != 100) {
+                std::cerr << "[StageLoader] Error: distribució no suma 100 (suma=" << sum << ")" << '\n';
+                return false;
+            }
+
+            return true;
+        } catch (const std::exception& e) {
+            std::cerr << "[StageLoader] Error parsing distribution: " << e.what() << '\n';
             return false;
         }
-
-        dist.pentagon = yaml["pentagon"].get_value<uint8_t>();
-        dist.cuadrado = yaml["cuadrado"].get_value<uint8_t>();
-        dist.molinillo = yaml["molinillo"].get_value<uint8_t>();
-
-        // Validar que suma 100
-        int sum = dist.pentagon + dist.cuadrado + dist.molinillo;
-        if (sum != 100) {
-            std::cerr << "[StageLoader] Error: distribució no suma 100 (suma=" << sum << ")" << '\n';
-            return false;
-        }
-
-        return true;
-    } catch (const std::exception& e) {
-        std::cerr << "[StageLoader] Error parsing distribution: " << e.what() << '\n';
-        return false;
     }
-}
 
-auto StageLoader::parseMultipliers(const fkyaml::node& yaml, MultiplicadorsDificultat& mult) -> bool {
-    try {
-        if (!yaml.contains("speed_multiplier") || !yaml.contains("rotation_multiplier") ||
-            !yaml.contains("tracking_strength")) {
-            std::cerr << "[StageLoader] Error: difficulty_multipliers incompleta" << '\n';
+    auto StageLoader::parseMultipliers(const fkyaml::node& yaml, MultiplicadorsDificultat& mult) -> bool {
+        try {
+            if (!yaml.contains("speed_multiplier") || !yaml.contains("rotation_multiplier") ||
+                !yaml.contains("tracking_strength")) {
+                std::cerr << "[StageLoader] Error: difficulty_multipliers incompleta" << '\n';
+                return false;
+            }
+
+            mult.velocity = yaml["speed_multiplier"].get_value<float>();
+            mult.rotation = yaml["rotation_multiplier"].get_value<float>();
+            mult.tracking_strength = yaml["tracking_strength"].get_value<float>();
+
+            // Validar rangs raonables
+            if (mult.velocity < 0.1F || mult.velocity > 5.0F) {
+                std::cerr << "[StageLoader] Warning: speed_multiplier fuera de rang (0.1-5.0)" << '\n';
+            }
+            if (mult.rotation < 0.1F || mult.rotation > 5.0F) {
+                std::cerr << "[StageLoader] Warning: rotation_multiplier fuera de rang (0.1-5.0)" << '\n';
+            }
+            if (mult.tracking_strength < 0.0F || mult.tracking_strength > 2.0F) {
+                std::cerr << "[StageLoader] Warning: tracking_strength fuera de rang (0.0-2.0)" << '\n';
+            }
+
+            return true;
+        } catch (const std::exception& e) {
+            std::cerr << "[StageLoader] Error parsing multipliers: " << e.what() << '\n';
             return false;
         }
-
-        mult.velocity = yaml["speed_multiplier"].get_value<float>();
-        mult.rotation = yaml["rotation_multiplier"].get_value<float>();
-        mult.tracking_strength = yaml["tracking_strength"].get_value<float>();
-
-        // Validar rangs raonables
-        if (mult.velocity < 0.1F || mult.velocity > 5.0F) {
-            std::cerr << "[StageLoader] Warning: speed_multiplier fuera de rang (0.1-5.0)" << '\n';
-        }
-        if (mult.rotation < 0.1F || mult.rotation > 5.0F) {
-            std::cerr << "[StageLoader] Warning: rotation_multiplier fuera de rang (0.1-5.0)" << '\n';
-        }
-        if (mult.tracking_strength < 0.0F || mult.tracking_strength > 2.0F) {
-            std::cerr << "[StageLoader] Warning: tracking_strength fuera de rang (0.0-2.0)" << '\n';
-        }
-
-        return true;
-    } catch (const std::exception& e) {
-        std::cerr << "[StageLoader] Error parsing multipliers: " << e.what() << '\n';
-        return false;
     }
-}
 
-auto StageLoader::parseSpawnMode(const std::string& mode_str) -> ModeSpawn {
-    if (mode_str == "progressive") {
+    auto StageLoader::parseSpawnMode(const std::string& mode_str) -> ModeSpawn {
+        if (mode_str == "progressive") {
+            return ModeSpawn::PROGRESSIVE;
+        }
+        if (mode_str == "immediate") {
+            return ModeSpawn::IMMEDIATE;
+        }
+        if (mode_str == "wave") {
+            return ModeSpawn::WAVE;
+        }
+        std::cerr << "[StageLoader] Warning: mode de spawn desconegut '" << mode_str
+                  << "', usant PROGRESSIVE" << '\n';
         return ModeSpawn::PROGRESSIVE;
     }
-    if (mode_str == "immediate") {
-        return ModeSpawn::IMMEDIATE;
-    }
-    if (mode_str == "wave") {
-        return ModeSpawn::WAVE;
-    }
-    std::cerr << "[StageLoader] Warning: mode de spawn desconegut '" << mode_str
-              << "', usant PROGRESSIVE" << '\n';
-    return ModeSpawn::PROGRESSIVE;
-}
 
-auto StageLoader::validateConfig(const StageSystemConfig& config) -> bool {
-    if (config.stages.empty()) {
-        std::cerr << "[StageLoader] Error: sin stage carregat" << '\n';
-        return false;
-    }
-
-    if (config.stages.size() != config.metadata.total_stages) {
-        std::cerr << "[StageLoader] Warning: nombre de stages (" << config.stages.size()
-                  << ") no coincideix con metadata.total_stages ("
-                  << static_cast<int>(config.metadata.total_stages) << ")" << '\n';
-    }
-
-    // Validar stage_id consecutius
-    for (size_t i = 0; i < config.stages.size(); i++) {
-        if (config.stages[i].stage_id != i + 1) {
-            std::cerr << "[StageLoader] Error: stage_id no consecutius (esperat "
-                      << i + 1 << ", trobat " << static_cast<int>(config.stages[i].stage_id)
-                      << ")" << '\n';
+    auto StageLoader::validateConfig(const StageSystemConfig& config) -> bool {
+        if (config.stages.empty()) {
+            std::cerr << "[StageLoader] Error: sin stage carregat" << '\n';
             return false;
         }
+
+        if (config.stages.size() != config.metadata.total_stages) {
+            std::cerr << "[StageLoader] Warning: nombre de stages (" << config.stages.size()
+                      << ") no coincideix con metadata.total_stages ("
+                      << static_cast<int>(config.metadata.total_stages) << ")" << '\n';
+        }
+
+        // Validar stage_id consecutius
+        for (size_t i = 0; i < config.stages.size(); i++) {
+            if (config.stages[i].stage_id != i + 1) {
+                std::cerr << "[StageLoader] Error: stage_id no consecutius (esperat "
+                          << i + 1 << ", trobat " << static_cast<int>(config.stages[i].stage_id)
+                          << ")" << '\n';
+                return false;
+            }
+        }
+
+        return true;
     }
 
-    return true;
-}
-
 }  // namespace StageSystem

source/game/systems/collision_system.cpp

@@ -8,86 +8,12 @@
 #include "core/physics/collision.hpp"
 #include "core/types.hpp"
 #include "game/constants.hpp"
+#include "game/entities/bullet_config.hpp"
+#include "game/systems/enemy_event_dispatcher.hpp"
 
 namespace Systems::Collision {
 
     namespace {
-        constexpr uint8_t NO_SHOOTER = 0xFF;
-
-        // Lookup tabla puntos / color por tipo de enemy (mantiene la lógica
-        // anterior pero centralizada para reutilizar entre paths).
-        auto scoreForType(EnemyType type) -> int {
-            switch (type) {
-                case EnemyType::PENTAGON:
-                    return Defaults::Enemies::Scoring::PENTAGON_SCORE;
-                case EnemyType::SQUARE:
-                    return Defaults::Enemies::Scoring::SQUARE_SCORE;
-                case EnemyType::PINWHEEL:
-                    return Defaults::Enemies::Scoring::PINWHEEL_SCORE;
-            }
-            return 0;
-        }
-
-        auto colorForType(EnemyType type) -> SDL_Color {
-            switch (type) {
-                case EnemyType::PENTAGON:
-                    return Defaults::Palette::PENTAGON;
-                case EnemyType::SQUARE:
-                    return Defaults::Palette::SQUARE;
-                case EnemyType::PINWHEEL:
-                    return Defaults::Palette::PINWHEEL;
-            }
-            return SDL_Color{};
-        }
-
-        // Mata al enemy con explosión: floating score, debris con velocity heredada,
-        // sonido. Si shooter_id ≠ NO_SHOOTER, suma puntos a ese jugador.
-        // CRUCIAL: leer velocity/datos ANTES de destruir() (que zera la velocity).
-        void explodeNow(Context& ctx, Enemy& enemy, uint8_t shooter_id) {
-            const Vec2 ENEMY_POS = enemy.getCenter();
-            const Vec2 ENEMY_VEL = enemy.getVelocityVector();
-            const float BRIGHTNESS = enemy.getBrightness();
-            const auto SHAPE = enemy.getShape();
-            const EnemyType TYPE = enemy.getType();
-
-            const int POINTS = scoreForType(TYPE);
-            const SDL_Color COLOR = colorForType(TYPE);
-
-            if (shooter_id != NO_SHOOTER) {
-                ctx.score_per_player[shooter_id] += POINTS;
-            }
-            ctx.floating_score_manager.crear(POINTS, ENEMY_POS);
-
-            enemy.destroy();
-
-            constexpr float SPEED_EXPLOSIO = 80.0F;  // px/s (explosión suave)
-            const Vec2 INHERITED_VEL = ENEMY_VEL * Defaults::Physics::Debris::ENEMY_VELOCITY_INHERITANCE;
-            ctx.debris_manager.explode(
-                SHAPE,
-                ENEMY_POS,
-                0.0F,  // angle (rotación interna del enemy)
-                1.0F,  // escala
-                SPEED_EXPLOSIO,
-                BRIGHTNESS,
-                INHERITED_VEL,
-                0.0F,  // sense herència angular: evita que els 5 trossos curvin en bloc
-                0.0F,  // sin herencia visual
-                Defaults::Sound::EXPLOSION,
-                COLOR,
-                Defaults::Physics::Debris::ENEMY_LIFETIME,
-                Defaults::Physics::Debris::ENEMY_FRICTION,
-                Defaults::Physics::Debris::ENEMY_SEGMENT_MULTIPLIER);
-
-            // Firework burst radial des del centro de l'enemic (efecte adicional al debris).
-            // Línia blanca + halo daurat (WOUNDED) per a feel d'espurnes.
-            ctx.firework_manager.spawn(ENEMY_POS,
-                Defaults::FX::Firework::DEFAULT_COLOR,
-                Defaults::FX::Firework::SPEED,
-                Defaults::FX::Firework::N_POINTS,
-                Defaults::FX::Firework::INITIAL_BRIGHTNESS,
-                /*glow=*/true,
-                Defaults::Palette::WOUNDED);
-        }
 
         // Trenca una bala en debris (8 fragments de l'octàgon) + so HIT + desactiva.
         // S'invoca des de qualsevol desactivació de bala (impacte amb enemic, amb jugador,
@@ -105,7 +31,7 @@ namespace Systems::Collision {
                 0.0F,    // sense velocity angular heretada
                 0.0F,    // sense rotació visual heretada
                 Defaults::Sound::HIT,
-                Defaults::Palette::BULLET,
+                bullet.getConfig().colors.normal,
                 Defaults::Physics::Debris::TEMPS_VIDA,
                 Defaults::Physics::Debris::ACCELERACIO,
                 1);  // sense duplicat de segments
@@ -121,31 +47,16 @@ namespace Systems::Collision {
                 continue;
             }
             for (auto& enemy : ctx.enemies) {
-                if (!Physics::checkCollisionSwept(bullet.getPrevPosition(), bullet.getCenter(), Defaults::Entities::BULLET_RADIUS, enemy, AMPLIFIER)) {
+                if (!Physics::checkCollisionSwept(bullet.getPrevPosition(), bullet.getCenter(), bullet.getCollisionRadius(), enemy, AMPLIFIER)) {
                     continue;
                 }
 
                 // *** COLISIÓN bullet → enemy ***
-                // Empuje físico cuasi-realista: el impulse és el moment de la bala
-                // (m·v) multiplicat pel factor de transferència. Direcció = vector
-                // velocity de la bala (cap a on viatjava).
-                const Vec2 IMPULSE = bullet.getBody().velocity *
-                    (bullet.getBody().mass * Defaults::Physics::Bullet::IMPACT_MOMENTUM_FACTOR);
-                enemy.applyImpulse(IMPULSE);
-
-                const uint8_t SHOOTER = bullet.getOwnerId();
-
-                if (enemy.isWounded()) {
-                    // Segundo impacto sobre enemy ya herido → muerte instantánea,
-                    // puntos al nuevo shooter.
-                    explodeNow(ctx, enemy, SHOOTER);
-                } else {
-                    // Primer impacto → entra en estado herido (explosión diferida).
-                    enemy.hurt(SHOOTER);
-                }
-
+                // La cadena d'efectes (impulse, hurt, destroy, debris, score...) viu
+                // al YAML de l'enemic via la secció `events:`. Aquí només dispatchem.
+                Systems::EnemyEvents::dispatchEvent(ctx, enemy, EnemyEventType::ON_HIT, bullet.getOwnerId(), &bullet);
                 breakBullet(ctx.debris_manager, bullet);
-                break;  // Una bala impacta a un enemy y muere
+                break;
             }
         }
     }
@@ -156,7 +67,7 @@ namespace Systems::Collision {
                 continue;
             }
             enemy.consumeWoundExpired();
-            explodeNow(ctx, enemy, enemy.getLastHitBy());
+            Systems::EnemyEvents::dispatchEvent(ctx, enemy, EnemyEventType::ON_HURT_END, enemy.getLastHitBy());
         }
     }
 
@@ -224,7 +135,8 @@ namespace Systems::Collision {
                     // Segon impacte durant HURT → mort. Aplica un impuls afegit
                     // perquè l'enemic surti disparat (feedback visible).
                     const Vec2 SHIP_VEL = ctx.ships[i].getVelocityVector();
-                    const Vec2 IMPULSE = SHIP_VEL * (Defaults::Ship::MASS * Defaults::Physics::Ship::DEATH_IMPACT_MOMENTUM_FACTOR);
+                    const float DEATH_FACTOR = ctx.ships[i].getConfig().physics.death_impact_factor;
+                    const Vec2 IMPULSE = SHIP_VEL * (ctx.ships[i].getBody().mass * DEATH_FACTOR);
                     touched_enemy->applyImpulse(IMPULSE);
                     ctx.on_player_hit(i);
                 } else {
@@ -268,7 +180,7 @@ namespace Systems::Collision {
                     continue;
                 }
 
-                if (!Physics::checkCollisionSwept(bullet.getPrevPosition(), bullet.getCenter(), Defaults::Entities::BULLET_RADIUS, ctx.ships[player_id], AMPLIFIER)) {
+                if (!Physics::checkCollisionSwept(bullet.getPrevPosition(), bullet.getCenter(), bullet.getCollisionRadius(), ctx.ships[player_id], AMPLIFIER)) {
                     continue;
                 }
 
@@ -277,7 +189,7 @@ namespace Systems::Collision {
                 // de la bala a la nau ABANS de on_player_hit perquè tocado()
                 // captura la velocitat per als debris (si no, queden quiets).
                 const Vec2 BULLET_IMPULSE = bullet.getBody().velocity *
-                    (bullet.getBody().mass * Defaults::Physics::Bullet::IMPACT_MOMENTUM_FACTOR);
+                    (bullet.getBody().mass * bullet.getConfig().physics.impact_momentum_factor);
                 ctx.ships[player_id].getBody().applyImpulse(BULLET_IMPULSE);
                 ctx.on_player_hit(player_id);
                 ctx.lives_per_player[BULLET_OWNER]++;
@@ -304,12 +216,12 @@ namespace Systems::Collision {
         float min_y;
         float max_y;
         Constants::getPlayAreaBounds(min_x, max_x, min_y, max_y);
-        constexpr float R = Defaults::Entities::BULLET_RADIUS;
 
         for (auto& bullet : bullets) {
             if (!bullet.isActive()) {
                 continue;
             }
+            const float R = bullet.getCollisionRadius();
             const Vec2& pos = bullet.getCenter();
             if (pos.x < min_x + R || pos.x > max_x - R ||
                 pos.y < min_y + R || pos.y > max_y - R) {

source/game/systems/enemy_event_dispatcher.cpp

@@ -0,0 +1,101 @@
+// enemy_event_dispatcher.cpp - Implementació del dispatcher d'events d'enemic
+// © 2026 JailDesigner
+
+#include "game/systems/enemy_event_dispatcher.hpp"
+
+#include <cstdint>
+
+#include "core/defaults.hpp"
+#include "core/types.hpp"
+#include "game/entities/bullet.hpp"
+#include "game/entities/bullet_config.hpp"
+#include "game/entities/enemy_config.hpp"
+
+namespace Systems::EnemyEvents {
+
+    namespace {
+        constexpr uint8_t NO_SHOOTER = 0xFF;
+
+        void doAddScore(Systems::Collision::Context& ctx, const Enemy& enemy, uint8_t shooter) {
+            const int POINTS = enemy.getConfig().score;
+            if (shooter != NO_SHOOTER) {
+                ctx.score_per_player[shooter] += POINTS;
+            }
+            ctx.floating_score_manager.crear(POINTS, enemy.getCenter());
+        }
+
+        void doCreateDebris(Systems::Collision::Context& ctx, const Enemy& enemy) {
+            constexpr float SPEED_EXPLOSIO = 80.0F;
+            const Vec2 INHERITED_VEL = enemy.getVelocityVector() *
+                Defaults::Physics::Debris::ENEMY_VELOCITY_INHERITANCE;
+            ctx.debris_manager.explode(
+                enemy.getShape(),
+                enemy.getCenter(),
+                0.0F,
+                1.0F,
+                SPEED_EXPLOSIO,
+                enemy.getBrightness(),
+                INHERITED_VEL,
+                0.0F,
+                0.0F,
+                Defaults::Sound::EXPLOSION,
+                enemy.getConfig().colors.normal,
+                Defaults::Physics::Debris::ENEMY_LIFETIME,
+                Defaults::Physics::Debris::ENEMY_FRICTION,
+                Defaults::Physics::Debris::ENEMY_SEGMENT_MULTIPLIER);
+        }
+
+        void doCreateFireworks(Systems::Collision::Context& ctx, const Enemy& enemy) {
+            ctx.firework_manager.spawn(enemy.getCenter(),
+                Defaults::FX::Firework::DEFAULT_COLOR,
+                Defaults::FX::Firework::SPEED,
+                Defaults::FX::Firework::N_POINTS,
+                Defaults::FX::Firework::INITIAL_BRIGHTNESS,
+                /*glow=*/true,
+                enemy.getConfig().colors.wounded);
+        }
+
+        void doApplyImpulse(Enemy& enemy, const Bullet* bullet) {
+            if (bullet == nullptr) {
+                return;
+            }
+            const Vec2 IMPULSE = bullet->getBody().velocity *
+                (bullet->getBody().mass * bullet->getConfig().physics.impact_momentum_factor);
+            enemy.applyImpulse(IMPULSE);
+        }
+    }  // namespace
+
+    void dispatchEvent(Systems::Collision::Context& ctx, Enemy& enemy, EnemyEventType event, uint8_t shooter_id, const Bullet* bullet) {
+        const auto& actions = enemy.getConfig().events.getActions(event);
+        for (const auto& action : actions) {
+            switch (action.type) {
+                case EnemyActionType::SET_HURT:
+                    if (enemy.isWounded()) {
+                        // Segon hit sobre wounded → mort immediata (regla 2-hits).
+                        dispatchEvent(ctx, enemy, EnemyEventType::ON_DESTROY, shooter_id, bullet);
+                        enemy.destroy();
+                    } else {
+                        enemy.hurt(shooter_id);
+                    }
+                    break;
+                case EnemyActionType::DESTROY:
+                    dispatchEvent(ctx, enemy, EnemyEventType::ON_DESTROY, shooter_id, bullet);
+                    enemy.destroy();
+                    break;
+                case EnemyActionType::ADD_SCORE:
+                    doAddScore(ctx, enemy, shooter_id);
+                    break;
+                case EnemyActionType::CREATE_DEBRIS:
+                    doCreateDebris(ctx, enemy);
+                    break;
+                case EnemyActionType::CREATE_FIREWORKS:
+                    doCreateFireworks(ctx, enemy);
+                    break;
+                case EnemyActionType::APPLY_IMPULSE:
+                    doApplyImpulse(enemy, bullet);
+                    break;
+            }
+        }
+    }
+
+}  // namespace Systems::EnemyEvents

source/game/systems/enemy_event_dispatcher.hpp

@@ -0,0 +1,23 @@
+// enemy_event_dispatcher.hpp - Executa les accions YAML d'un event d'enemic
+// © 2026 JailDesigner
+//
+// Mira la llista d'EnemyAction associada a l'event al config de l'enemic i les
+// executa una per una. L'acció DESTROY dispara recursivament ON_DESTROY abans
+// de desactivar físicament l'enemic (el parser garanteix que ON_DESTROY no
+// conté DESTROY, evitant recursió infinita).
+
+#pragma once
+
+#include <cstdint>
+
+#include "game/entities/enemy_event.hpp"
+#include "game/systems/collision_system.hpp"
+
+namespace Systems::EnemyEvents {
+
+    // shooter_id: id del jugador que ha disparat (0xFF = sense atribució).
+    // bullet: punter opcional a la bala que ha causat l'event (usat per APPLY_IMPULSE);
+    //         nullptr per a events no derivats d'una bala (on_hurt_end).
+    void dispatchEvent(Systems::Collision::Context& ctx, Enemy& enemy, EnemyEventType event, uint8_t shooter_id, const Bullet* bullet = nullptr);
+
+}  // namespace Systems::EnemyEvents

tools/pack_resources/pack_resources.cpp

@@ -1,92 +1,99 @@
 // pack_resources.cpp - Utilitat per crear paquets de recursos
 // © 2026 JailDesigner
 
-#include "../../source/core/resources/resource_pack.hpp"
-
 #include <filesystem>
 #include <iostream>
+#include <string>
 
-void print_usage(const char* program_name) {
-    std::cout << "Ús: " << program_name << " [opcions] [directori_entrada] [fitxer_sortida]\n";
-    std::cout << "\nOpcions:\n";
-    std::cout << "  --list <fitxer>    Llistar contingut d'un paquet\n";
-    std::cout << "\nExemples:\n";
-    std::cout << "  " << program_name << " data resources.pack\n";
-    std::cout << "  " << program_name << " --list resources.pack\n";
-    std::cout << "\nSi no s'especifiquen arguments, empaqueta 'data/' a 'resources.pack'\n";
-}
+#include "core/resources/resource_pack.hpp"
+#include "project.h"
+
+namespace {
+
+    void showHelp() {
+        std::cout << Project::LONG_NAME << " - Resource Packer\n";
+        std::cout << "==============================================\n";
+        std::cout << "Usage: pack_resources [options] [input_dir] [output_file]\n\n";
+        std::cout << "Options:\n";
+        std::cout << "  --help    Show this help message\n";
+        std::cout << "  --list    List contents of an existing pack file\n\n";
+        std::cout << "Arguments:\n";
+        std::cout << "  input_dir   Directory to pack (default: data)\n";
+        std::cout << "  output_file Pack file name (default: resources.pack)\n";
+    }
+
+    void listPackContents(const std::string& pack_file) {
+        Resource::Pack pack;
+        if (!pack.loadPack(pack_file)) {
+            std::cerr << "Error: cannot open pack file: " << pack_file << '\n';
+            return;
+        }
+        auto resources = pack.getResourceList();
+        std::cout << "Pack file: " << pack_file << '\n';
+        std::cout << "Resources: " << resources.size() << '\n';
+        for (const auto& r : resources) { std::cout << "  " << r << '\n'; }
+    }
+
+}  // namespace
 
 int main(int argc, char* argv[]) {
-    std::string input_dir = "data";
+    std::string data_dir = "data";
     std::string output_file = "resources.pack";
+    bool list_mode = false;
+    bool data_dir_set = false;
 
-    // Processar arguments
-    if (argc == 2 && std::string(argv[1]) == "--help") {
-        print_usage(argv[0]);
+    for (int i = 1; i < argc; ++i) {
+        std::string arg = argv[i];
+        if (arg == "--help" || arg == "-h") {
+            showHelp();
+            return 0;
+        }
+        if (arg == "--list") {
+            list_mode = true;
+            if (i + 1 < argc) { output_file = argv[++i]; }
+            continue;
+        }
+        if (!arg.empty() && arg[0] != '-') {
+            if (!data_dir_set) {
+                data_dir = arg;
+                data_dir_set = true;
+            } else {
+                output_file = arg;
+            }
+        }
+    }
+
+    if (list_mode) {
+        listPackContents(output_file);
         return 0;
     }
 
-    // Mode --list
-    if (argc == 3 && std::string(argv[1]) == "--list") {
-        Resource::Pack pack;
-        if (!pack.loadPack(argv[2])) {
-            std::cerr << "ERROR: No es pot carregar " << argv[2] << "\n";
-            return 1;
-        }
+    std::cout << Project::LONG_NAME << " - Resource Packer\n";
+    std::cout << "==============================================\n";
+    std::cout << "Input directory: " << data_dir << '\n';
+    std::cout << "Output file: " << output_file << '\n';
 
-        std::cout << "Contingut de " << argv[2] << ":\n";
-        auto resources = pack.getResourceList();
-        std::cout << "Total: " << resources.size() << " recursos\n\n";
-
-        for (const auto& name : resources) {
-            std::cout << "  " << name << "\n";
-        }
-
-        return 0;
-    }
-
-    // Mode empaquetar
-    if (argc >= 3) {
-        input_dir = argv[1];
-        output_file = argv[2];
-    }
-
-    // Verificar que existeix el directori
-    if (!std::filesystem::exists(input_dir)) {
-        std::cerr << "ERROR: Directori no trobat: " << input_dir << "\n";
+    if (!std::filesystem::exists(data_dir)) {
+        std::cerr << "Error: input directory does not exist: " << data_dir << '\n';
         return 1;
     }
 
-    if (!std::filesystem::is_directory(input_dir)) {
-        std::cerr << "ERROR: " << input_dir << " no és un directori\n";
-        return 1;
-    }
-
-    // Crear paquet
-    std::cout << "Creant paquet de recursos...\n";
-    std::cout << "  Entrada: " << input_dir << "\n";
-    std::cout << "  Sortida: " << output_file << "\n\n";
-
     Resource::Pack pack;
-    if (!pack.addDirectory(input_dir)) {
-        std::cerr << "ERROR: No s'ha pogut afegir el directori\n";
+    std::cout << "Scanning and packing resources...\n";
+    if (!pack.addDirectory(data_dir)) {
+        std::cerr << "Error: failed to add directory to pack\n";
         return 1;
     }
+    std::cout << "Found " << pack.getResourceList().size() << " resources\n";
 
+    std::cout << "Saving pack file...\n";
     if (!pack.savePack(output_file)) {
-        std::cerr << "ERROR: No s'ha pogut guardar el paquet\n";
+        std::cerr << "Error: failed to save pack file\n";
         return 1;
     }
 
-    // Resum
-    auto resources = pack.getResourceList();
-    std::cout << "\n";
-    std::cout << "✓ Paquet creat amb èxit!\n";
-    std::cout << "  Recursos: " << resources.size() << "\n";
-
-    // Mostrar mida del fitxer
-    auto file_size = std::filesystem::file_size(output_file);
-    std::cout << "  Mida: " << (file_size / 1024) << " KB\n";
-
+    auto file_size = std::filesystem::file_size(std::filesystem::path(output_file));
+    std::cout << "Pack file created: " << output_file << " ("
+              << (static_cast<double>(file_size) / 1024.0 / 1024.0) << " MB)\n";
     return 0;
 }