diff --git a/data/player/morcus.yaml b/data/player/morcus.yaml
index a0c54ce..6911f45 100644
--- a/data/player/morcus.yaml
+++ b/data/player/morcus.yaml
@@ -1,7 +1,7 @@
 # player animation
-tileSetFile: morcus.gif
-frameWidth: 16
-frameHeight: 32
+sprite:
+  path: morcus.gif
+  size: [16, 32]
 
 # Geometria de col·lisió del jugador (independent de l'animació):
 #   size      → costat del quadrat de col·lisió (16×16)
@@ -16,30 +16,29 @@ collision:
   # els passadissos. Centrada en el mateix punt que la caixa base.
   hit_size: 8
 
+# Animacions en mapa (clau = nom). Camps per animació:
+#   frames    → llista d'índexs dins de l'spritesheet.
+#   frame_ms  → durada de cada frame en ms. Escalar = uniforme; llista =
+#               per-frame (mateixa mida que `frames`).
+#   loop      → true per defecte. `loop: false` = un sol tret (es queda al
+#               darrer frame i `animationIsCompleted()` passa a true).
+#   loop_from → rebota a aquest índex en passar del final (implica loop).
 animations:
-  - name: stand_down
-    frames: [0]
+  stand_down: { frames: [0] }
+  stand_up:   { frames: [4] }
+  stand:      { frames: [8] }
 
-  - name: stand_up
-    frames: [4]
-
-  - name: stand
-    frames: [8]
-
-  - name: walk_down
-    speed: 0.1
-    loopFrom: 0
+  walk_down:
     frames: [0, 1, 2, 3]
+    frame_ms: 100
 
-  - name: walk_up
-    speed: 0.1
-    loopFrom: 0
+  walk_up:
     frames: [4, 5, 6, 7]
+    frame_ms: 100
 
-  - name: walk
-    speed: 0.1
-    loopFrom: 0
+  walk:
     frames: [8, 9, 10, 11]
+    frame_ms: 100
 
 # Inèrcia només de frenada. L'acceleració és sempre instantània (soltar
 # el teclat + prémer una direcció = velocitat plena); en canvi, quan es
diff --git a/data/player/sam.yaml b/data/player/sam.yaml
index 894773a..3481f3e 100644
--- a/data/player/sam.yaml
+++ b/data/player/sam.yaml
@@ -1,7 +1,7 @@
 # player animation
-tileSetFile: sam.gif
-frameWidth: 16
-frameHeight: 32
+sprite:
+  path: sam.gif
+  size: [16, 32]
 
 # Geometria de col·lisió del jugador (independent de l'animació):
 #   size      → costat del quadrat de col·lisió (16×16)
@@ -16,30 +16,29 @@ collision:
   # els passadissos. Centrada en el mateix punt que la caixa base.
   hit_size: 8
 
+# Animacions en mapa (clau = nom). Camps per animació:
+#   frames    → llista d'índexs dins de l'spritesheet.
+#   frame_ms  → durada de cada frame en ms. Escalar = uniforme; llista =
+#               per-frame (mateixa mida que `frames`).
+#   loop      → true per defecte. `loop: false` = un sol tret (es queda al
+#               darrer frame i `animationIsCompleted()` passa a true).
+#   loop_from → rebota a aquest índex en passar del final (implica loop).
 animations:
-  - name: stand_down
-    frames: [1]
+  stand_down: { frames: [1] }
+  stand_up:   { frames: [5] }
+  stand:      { frames: [9] }
 
-  - name: stand_up
-    frames: [5]
-
-  - name: stand
-    frames: [9]
-
-  - name: walk_down
-    speed: 0.1
-    loopFrom: 0
+  walk_down:
     frames: [0, 1, 2, 3]
+    frame_ms: 100
 
-  - name: walk_up
-    speed: 0.1
-    loopFrom: 0
+  walk_up:
     frames: [4, 5, 6, 7]
+    frame_ms: 100
 
-  - name: walk
-    speed: 0.1
-    loopFrom: 0
+  walk:
     frames: [8, 9, 10, 11]
+    frame_ms: 100
 
 # Inèrcia només de frenada. L'acceleració és sempre instantània (soltar
 # el teclat + prémer una direcció = velocitat plena); en canvi, quan es
diff --git a/source/core/rendering/sprite/animated_sprite.cpp b/source/core/rendering/sprite/animated_sprite.cpp
index 1b3c91e..b50684c 100644
--- a/source/core/rendering/sprite/animated_sprite.cpp
+++ b/source/core/rendering/sprite/animated_sprite.cpp
@@ -3,6 +3,7 @@
 #include <cmath>
 #include <iostream>
 #include <numeric>
+#include <utility>
 
 #include "core/rendering/surface.hpp"
 #include "core/resources/resource_cache.hpp"
@@ -24,46 +25,6 @@ namespace {
         return frames;
     }
 
-    auto parseAnimations(const fkyaml::node& yaml, float frame_width, float frame_height, int frames_per_row, int max_tiles) -> std::vector<AnimatedSprite::AnimationData> {
-        std::vector<AnimatedSprite::AnimationData> animations;
-        if (!yaml.contains("animations") || !yaml["animations"].is_sequence()) {
-            return animations;
-        }
-
-        for (const auto& anim_node : yaml["animations"]) {
-            AnimatedSprite::AnimationData animation;
-
-            if (anim_node.contains("name")) {
-                animation.name = anim_node["name"].get_value<std::string>();
-            }
-            if (anim_node.contains("frames") && anim_node["frames"].is_sequence()) {
-                animation.frames = convertYamlFramesToRects(
-                    anim_node["frames"],
-                    frame_width,
-                    frame_height,
-                    frames_per_row,
-                    max_tiles);
-            }
-            if (anim_node.contains("speed")) {
-                const auto& speed_node = anim_node["speed"];
-                if (speed_node.is_sequence()) {
-                    for (const auto& s : speed_node) {
-                        animation.speeds.push_back(s.get_value<float>());
-                    }
-                } else {
-                    auto spd = speed_node.get_value<float>();
-                    if (spd > 0.0F) { animation.speeds.assign(animation.frames.size(), spd); }
-                }
-            }
-            if (anim_node.contains("loopFrom")) {
-                animation.loop_from = anim_node["loopFrom"].get_value<int>();
-            }
-
-            animations.push_back(animation);
-        }
-        return animations;
-    }
-
     struct SheetParams {
         float frame_width{0.0F};
         float frame_height{0.0F};
@@ -71,16 +32,22 @@ namespace {
         int max_tiles{1};
     };
 
-    auto parseGlobalConfig(const fkyaml::node& yaml, std::shared_ptr<Surface>& surface) -> SheetParams {
+    // Llegeix el bloc `sprite: { path, size: [w, h] }` — mateix format que
+    // les plantilles d'entitat. La surface es resol via Resource::Cache amb
+    // el basename del fitxer.
+    auto parseSpriteBlock(const fkyaml::node& yaml, std::shared_ptr<Surface>& surface) -> SheetParams {
         SheetParams params;
-        if (yaml.contains("tileSetFile")) {
-            surface = Resource::Cache::get().getSurface(yaml["tileSetFile"].get_value<std::string>());
+        if (!yaml.contains("sprite")) { return params; }
+        const auto& s = yaml["sprite"];
+        if (s.contains("path")) {
+            surface = Resource::Cache::get().getSurface(s["path"].get_value<std::string>());
         }
-        if (yaml.contains("frameWidth")) {
-            params.frame_width = static_cast<float>(yaml["frameWidth"].get_value<int>());
-        }
-        if (yaml.contains("frameHeight")) {
-            params.frame_height = static_cast<float>(yaml["frameHeight"].get_value<int>());
+        if (s.contains("size")) {
+            const auto& sz = s["size"];
+            if (sz.is_sequence() && sz.size() == 2) {
+                params.frame_width = static_cast<float>(sz[0].get_value<int>());
+                params.frame_height = static_cast<float>(sz[1].get_value<int>());
+            }
         }
         if (surface && params.frame_width > 0.0F && params.frame_height > 0.0F) {
             params.frames_per_row = surface->getWidth() / static_cast<int>(params.frame_width);
@@ -90,21 +57,82 @@ namespace {
         return params;
     }
 
+    // `frame_ms` pot ser un escalar (temps uniforme) o una llista (per-frame).
+    // Convertim sempre a segons perquè `animate()` treballa amb delta_time
+    // en segons. Si falta o val 0, `speeds` queda buit i l'animació es
+    // considera estàtica (no avança).
+    void parseFrameTimes(const fkyaml::node& anim_node, AnimatedSprite::AnimationData& animation) {
+        if (!anim_node.contains("frame_ms")) { return; }
+        const auto& fm = anim_node["frame_ms"];
+        if (fm.is_sequence()) {
+            for (const auto& v : fm) {
+                animation.speeds.push_back(static_cast<float>(v.get_value<int>()) / 1000.0F);
+            }
+        } else {
+            const float SEC = static_cast<float>(fm.get_value<int>()) / 1000.0F;
+            if (SEC > 0.0F) { animation.speeds.assign(animation.frames.size(), SEC); }
+        }
+    }
+
+    // Ordre de prioritat per a la política de loop:
+    //   1) `loop_from: N` → rebota al frame N en passar del final (implica loop).
+    //   2) `loop: false`  → animació d'un sol tret (es queda al darrer frame).
+    //   3) Res            → loop complet des del frame 0 (default).
+    void parseLoopPolicy(const fkyaml::node& anim_node, AnimatedSprite::AnimationData& animation) {
+        if (anim_node.contains("loop_from")) {
+            animation.loop_from = anim_node["loop_from"].get_value<int>();
+        } else if (anim_node.contains("loop") && !anim_node["loop"].get_value<bool>()) {
+            animation.loop_from = -1;
+        } else {
+            animation.loop_from = 0;
+        }
+    }
+
+    auto parseAnimations(const fkyaml::node& yaml, const SheetParams& params) -> std::unordered_map<std::string, AnimatedSprite::AnimationData> {
+        std::unordered_map<std::string, AnimatedSprite::AnimationData> animations;
+        if (!yaml.contains("animations") || !yaml["animations"].is_mapping()) {
+            return animations;
+        }
+        const auto& anims_node = yaml["animations"];
+        for (auto it = anims_node.begin(); it != anims_node.end(); ++it) {
+            const auto NAME = it.key().get_value<std::string>();
+            const auto& anim_node = *it;
+
+            AnimatedSprite::AnimationData animation;
+            if (anim_node.contains("frames") && anim_node["frames"].is_sequence()) {
+                animation.frames = convertYamlFramesToRects(
+                    anim_node["frames"],
+                    params.frame_width,
+                    params.frame_height,
+                    params.frames_per_row,
+                    params.max_tiles);
+            }
+            parseFrameTimes(anim_node, animation);
+            parseLoopPolicy(anim_node, animation);
+
+            animations.emplace(NAME, std::move(animation));
+        }
+        return animations;
+    }
+
 }  // namespace
 
 AnimatedSprite::AnimatedSprite(const AnimationResource& cached_data) {
     std::string yaml_content(cached_data.yaml_data.begin(), cached_data.yaml_data.end());
     try {
         auto yaml = fkyaml::node::deserialize(yaml_content);
-        auto params = parseGlobalConfig(yaml, surface_);
-        animations_ = parseAnimations(yaml, params.frame_width, params.frame_height, params.frames_per_row, params.max_tiles);
-        buildNameIndex();
+        auto params = parseSpriteBlock(yaml, surface_);
+        animations_ = parseAnimations(yaml, params);
 
         setWidth(params.frame_width);
         setHeight(params.frame_height);
 
-        if (!animations_.empty() && !animations_[0].frames.empty()) {
-            setClip(animations_[0].frames[0]);
+        // Clip inicial: qualsevol frame del primer element del mapa serveix
+        // com a placeholder. El consumidor sempre crida `setCurrentAnimation`
+        // abans del primer `update()`, així que el valor real el posa ell.
+        if (!animations_.empty()) {
+            const auto& first = animations_.begin()->second;
+            if (!first.frames.empty()) { setClip(first.frames[0]); }
         }
     } catch (const fkyaml::exception& e) {
         std::cerr << "YAML parsing error in animation " << cached_data.name << ": " << e.what() << '\n';
@@ -115,17 +143,12 @@ AnimatedSprite::AnimatedSprite(const AnimationResource& cached_data) {
     }
 }
 
-void AnimatedSprite::buildNameIndex() {
-    animation_index_.clear();
-    for (int i = 0; i < static_cast<int>(animations_.size()); ++i) {
-        animation_index_[animations_[i].name] = i;
-    }
-}
-
 void AnimatedSprite::animate(float delta_time) {
-    if (animations_.empty()) { return; }
-    auto& anim = animations_[current_animation_];
-    if (anim.speeds.empty()) { return; }
+    if (current_animation_.empty()) { return; }
+    auto it = animations_.find(current_animation_);
+    if (it == animations_.end()) { return; }
+    auto& anim = it->second;
+    if (anim.speeds.empty() || anim.frames.empty()) { return; }
 
     anim.accumulated_time += delta_time;
 
@@ -159,26 +182,25 @@ void AnimatedSprite::animate(float delta_time) {
 }
 
 auto AnimatedSprite::animationIsCompleted() -> bool {
-    return animations_[current_animation_].completed;
+    if (current_animation_.empty()) { return false; }
+    auto it = animations_.find(current_animation_);
+    if (it == animations_.end()) { return false; }
+    return it->second.completed;
 }
 
 void AnimatedSprite::setCurrentAnimation(const std::string& name) {
-    auto it = animation_index_.find(name);
-    if (it == animation_index_.end()) {
+    if (current_animation_ == name) { return; }
+    auto it = animations_.find(name);
+    if (it == animations_.end()) {
         std::cout << "** Warning: could not find \"" << name << "\" animation" << '\n';
         return;
     }
-    setCurrentAnimation(it->second);
-}
-
-void AnimatedSprite::setCurrentAnimation(int index) {
-    if (current_animation_ != index) {
-        current_animation_ = index;
-        animations_[current_animation_].current_frame = 0;
-        animations_[current_animation_].accumulated_time = 0.0F;
-        animations_[current_animation_].completed = false;
-        setClip(animations_[current_animation_].frames[animations_[current_animation_].current_frame]);
-    }
+    current_animation_ = name;
+    auto& anim = it->second;
+    anim.current_frame = 0;
+    anim.accumulated_time = 0.0F;
+    anim.completed = false;
+    if (!anim.frames.empty()) { setClip(anim.frames[0]); }
 }
 
 void AnimatedSprite::update(float delta_time) {
@@ -187,15 +209,11 @@ void AnimatedSprite::update(float delta_time) {
 }
 
 void AnimatedSprite::resetAnimation() {
-    animations_[current_animation_].current_frame = 0;
-    animations_[current_animation_].accumulated_time = 0.0F;
-    animations_[current_animation_].completed = false;
-}
-
-void AnimatedSprite::setCurrentAnimationFrame(int num) {
-    if (num < 0 || num >= static_cast<int>(animations_[current_animation_].frames.size())) {
-        num = 0;
-    }
-    animations_[current_animation_].current_frame = num;
-    setClip(animations_[current_animation_].frames[animations_[current_animation_].current_frame]);
+    if (current_animation_.empty()) { return; }
+    auto it = animations_.find(current_animation_);
+    if (it == animations_.end()) { return; }
+    auto& anim = it->second;
+    anim.current_frame = 0;
+    anim.accumulated_time = 0.0F;
+    anim.completed = false;
 }
diff --git a/source/core/rendering/sprite/animated_sprite.hpp b/source/core/rendering/sprite/animated_sprite.hpp
index b05cd38..c781aaa 100644
--- a/source/core/rendering/sprite/animated_sprite.hpp
+++ b/source/core/rendering/sprite/animated_sprite.hpp
@@ -11,11 +11,19 @@
 
 class AnimatedSprite : public MovingSprite {
    public:
+    // Dades d'una animació concreta dins d'un spritesheet. Les claus del
+    // mapa (`animations_`) són els noms; aquí només es guarden els fotogrames
+    // i l'estat de reproducció.
     struct AnimationData {
-        std::string name;
         std::vector<SDL_FRect> frames;
+        // Durada de cada frame en segons (convertit des de `frame_ms` al YAML).
+        // Si té un sol valor, val per a tots els frames; altrament ha de tenir
+        // la mateixa mida que `frames`.
         std::vector<float> speeds;
-        int loop_from{-1};
+        // -1 = no loop (es queda al darrer frame i marca `completed`).
+        //  0 = loop complet des del primer frame.
+        //  N>0 = rebota al frame N en passar del final.
+        int loop_from{0};
         bool completed{false};
         int current_frame{0};
         float accumulated_time{0.0F};
@@ -28,16 +36,12 @@ class AnimatedSprite : public MovingSprite {
 
     auto animationIsCompleted() -> bool;
 
-    void setCurrentAnimation(const std::string& name = "default");
-    void setCurrentAnimation(int index = 0);
+    void setCurrentAnimation(const std::string& name);
     void resetAnimation();
-    void setCurrentAnimationFrame(int num);
     void animate(float delta_time);
 
    private:
-    void buildNameIndex();
-
-    std::vector<AnimationData> animations_;
-    std::unordered_map<std::string, int> animation_index_;
-    int current_animation_{0};
+    std::unordered_map<std::string, AnimationData> animations_;
+    // Nom de l'animació activa. Buit fins que algú crida `setCurrentAnimation`.
+    std::string current_animation_;
 };