365 lines
15 KiB
C++
365 lines
15 KiB
C++
// ship_animator.cpp - Implementació de l'animador de naus 3D
|
|
// © 2026 JailDesigner
|
|
|
|
#include "ship_animator.hpp"
|
|
|
|
#include <algorithm>
|
|
#include <cmath>
|
|
#include <cstddef>
|
|
|
|
#include "core/defaults.hpp"
|
|
#include "core/graphics/shape_loader.hpp"
|
|
#include "core/math/easing.hpp"
|
|
|
|
namespace Title {
|
|
|
|
namespace {
|
|
|
|
// Profunditat d'extrusió de la silueta 2D de la nau (en unitats mundials).
|
|
// 0.0F → emet només la silueta plana. >0 emet volum extrudit.
|
|
constexpr float SHIP_EXTRUSION_DEPTH = 1.0F;
|
|
|
|
// VP lògic per definir forward_dir / direcció del path. Tots els paths
|
|
// s'allunyen cap a aquest punt; les naus exiting continuen MÉS ENLLÀ
|
|
// (vegeu SHIP_EXIT_TRAVEL) per no desaparèixer en arribar al VP.
|
|
constexpr float SHIP_EXIT_Z = 800.0F;
|
|
constexpr Vec3 VANISHING_POINT{.x = 0.0F, .y = 0.0F, .z = SHIP_EXIT_Z};
|
|
|
|
// Profunditat addicional darrere del VP cap a la qual les naus exiting
|
|
// convergeixen. Així P1 (X<0) i P2 (X>0) mantenen sempre els seus
|
|
// hemisferis i no es creuen al passar pel VP — totes dues acaben al
|
|
// centre projectat (640, 360) sense travessar-lo.
|
|
constexpr float SHIP_EXIT_OVERFLOW = 700.0F;
|
|
|
|
// Directors VP → origen de cada nau, normalitzats. P1 ve des de "les 7"
|
|
// del rellotge (baix-esquerra), P2 des de "les 5" (baix-dreta). Els
|
|
// components estan calibrats perquè a TARGET_DIST el pixel projectat
|
|
// caigui aprox sota la "P de PRESS" / "Y de PLAY" del text del títol.
|
|
constexpr Vec3 PATH_DIR_P1{.x = -0.0887F, .y = -0.0683F, .z = -0.9938F};
|
|
constexpr Vec3 PATH_DIR_P2{.x = +0.0887F, .y = -0.0683F, .z = -0.9938F};
|
|
|
|
// Distàncies des del VP al llarg del path (unitats mundials).
|
|
// Reduïm TARGET_DIST per acostar el descans al VP (puja en pantalla,
|
|
// s'allunya de PRESS START); compensem amb SHIP_FLOAT_SCALE més gran.
|
|
constexpr float TARGET_DIST = 480.0F; // Descans a Z≈323 → pixel ≈ (558, 423)
|
|
constexpr float ENTRY_DIST = 770.0F; // Inicial a Z≈35 → fora pantalla baix-esq.
|
|
|
|
// Pitch addicional sobre el look-at pur per fer que el dors de la nau
|
|
// s'incline cap a la càmera (~-14° afegits). Amb forward quasi paral·lel
|
|
// a +Z, el pitch look-at és ~-94°; afegint això queda al voltant de -108°,
|
|
// que és l'angle visualment validat com a "bo" per l'usuari.
|
|
constexpr float PITCH_LIFT_RAD = -0.25F;
|
|
|
|
// Look-at: calcula pitch+yaw que duen (0,-1,0) local a forward_dir mundial.
|
|
// Requereix l'ordre de rotació X→Y→Z al applyTransform de wireframe3d.
|
|
// Si forward és quasi vertical (sin(pitch) ≈ 0), retorna yaw=0 (qualsevol).
|
|
auto computePitchYawForLookAt(const Vec3& forward_dir) -> Vec2 {
|
|
const float DY = std::clamp(forward_dir.y, -1.0F, 1.0F);
|
|
const float PITCH_LOOKAT = -std::acos(-DY); // ∈ [-π, 0]
|
|
const float SIN_PITCH = std::sin(PITCH_LOOKAT);
|
|
float yaw = 0.0F;
|
|
if (std::abs(SIN_PITCH) >= 1.0E-5F) {
|
|
const float SY = -forward_dir.x / SIN_PITCH;
|
|
const float CY = -forward_dir.z / SIN_PITCH;
|
|
yaw = std::atan2(SY, CY);
|
|
}
|
|
return Vec2{.x = PITCH_LOOKAT + PITCH_LIFT_RAD, .y = yaw};
|
|
}
|
|
|
|
auto safeNormalize(const Vec3& v, const Vec3& fallback) -> Vec3 {
|
|
return v.lengthSquared() > 0.0F ? v.normalized() : fallback;
|
|
}
|
|
|
|
auto entryForward(const TitleShip& ship) -> Vec3 {
|
|
return safeNormalize(ship.target_position - ship.initial_position,
|
|
Vec3{.x = 0.0F, .y = 0.0F, .z = 1.0F});
|
|
}
|
|
|
|
auto floatingForward(const Vec3& target) -> Vec3 {
|
|
return safeNormalize(VANISHING_POINT - target,
|
|
Vec3{.x = 0.0F, .y = 0.0F, .z = 1.0F});
|
|
}
|
|
|
|
auto exitForward(const Vec3& current) -> Vec3 {
|
|
return safeNormalize(VANISHING_POINT - current,
|
|
Vec3{.x = 0.0F, .y = 0.0F, .z = 1.0F});
|
|
}
|
|
|
|
// Mida visual i animació.
|
|
constexpr float SHIP_FLOAT_SCALE = 2.0F;
|
|
constexpr float SHIP_ENTRY_SCALE = 2.0F; // Mida mundial idèntica; la perspectiva fa la resta
|
|
// ENTRY_DURATION viu a Defaults::Title::Ships::ENTRY_DURATION (compartit
|
|
// amb title_scene.cpp per calcular el threshold T_SHIPS_LANDED).
|
|
constexpr float ENTRY_DURATION = Defaults::Title::Ships::ENTRY_DURATION;
|
|
constexpr float EXIT_DURATION = Defaults::Title::Ships::EXIT_DURATION;
|
|
|
|
// Oscil·lació en unitats mundials (al voltant del target_position).
|
|
constexpr float FLOAT_AMPLITUDE_X = 1.5F;
|
|
constexpr float FLOAT_AMPLITUDE_Y = 1.0F;
|
|
constexpr float FLOAT_FREQUENCY_X_BASE = 0.5F;
|
|
constexpr float FLOAT_FREQUENCY_Y_BASE = 0.7F;
|
|
constexpr float FLOAT_PHASE_OFFSET = 1.57F;
|
|
|
|
constexpr float P1_FREQUENCY_MULTIPLIER = 0.88F;
|
|
constexpr float P2_FREQUENCY_MULTIPLIER = 1.12F;
|
|
constexpr float P1_ENTRY_DELAY = 0.0F;
|
|
constexpr float P2_ENTRY_DELAY = 0.5F;
|
|
|
|
} // namespace
|
|
|
|
ShipAnimator::ShipAnimator(Rendering::Renderer* renderer,
|
|
const Graphics::Camera3D* camera)
|
|
: renderer_(renderer),
|
|
camera_(camera) {
|
|
}
|
|
|
|
void ShipAnimator::init() {
|
|
auto shape_p1 = Graphics::ShapeLoader::load("ship.shp");
|
|
auto shape_p2 = Graphics::ShapeLoader::load("ship2.shp");
|
|
|
|
ships_[0].player_id = 1;
|
|
if (shape_p1 && shape_p1->isValid()) {
|
|
ships_[0].mesh = Graphics::extrudeShape2D(*shape_p1, SHIP_EXTRUSION_DEPTH);
|
|
}
|
|
configureShipP1(ships_[0]);
|
|
|
|
ships_[1].player_id = 2;
|
|
if (shape_p2 && shape_p2->isValid()) {
|
|
ships_[1].mesh = Graphics::extrudeShape2D(*shape_p2, SHIP_EXTRUSION_DEPTH);
|
|
}
|
|
configureShipP2(ships_[1]);
|
|
}
|
|
|
|
void ShipAnimator::update(float delta_time) {
|
|
for (auto& ship : ships_) {
|
|
if (!ship.visible) {
|
|
continue;
|
|
}
|
|
switch (ship.state) {
|
|
case ShipState::ENTERING:
|
|
updateEntering(ship, delta_time);
|
|
break;
|
|
case ShipState::FLOATING:
|
|
updateFloating(ship, delta_time);
|
|
break;
|
|
case ShipState::EXITING: {
|
|
updateExiting(ship, delta_time);
|
|
// Transició a invisible: la nau acaba d'arribar al VP.
|
|
if (!ship.visible && on_ship_disappear_) {
|
|
on_ship_disappear_(ship.player_id);
|
|
}
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void ShipAnimator::draw() const {
|
|
if (camera_ == nullptr || renderer_ == nullptr) {
|
|
return;
|
|
}
|
|
for (std::size_t i = 0; i < ships_.size(); ++i) {
|
|
const auto& ship = ships_[i];
|
|
if (!ship.visible) {
|
|
continue;
|
|
}
|
|
const Vec2 EULER = computePitchYawForLookAt(ship.forward_dir);
|
|
const Graphics::Transform3D TRANSFORM{
|
|
.position = ship.current_position,
|
|
.rotation_euler = Vec3{.x = EULER.x, .y = EULER.y, .z = 0.0F},
|
|
.scale = ship.current_scale,
|
|
};
|
|
const SDL_Color SHIP_COLOR = (i == 0)
|
|
? Defaults::Title::Colors::SHIP_P1
|
|
: Defaults::Title::Colors::SHIP_P2;
|
|
Graphics::drawWireframe(renderer_, *camera_, ship.mesh, TRANSFORM, 1.0F, SHIP_COLOR);
|
|
}
|
|
}
|
|
|
|
void ShipAnimator::startEntryAnimation() {
|
|
for (auto& ship : ships_) {
|
|
ship.state = ShipState::ENTERING;
|
|
ship.state_time = 0.0F;
|
|
ship.current_position = ship.initial_position;
|
|
ship.current_scale = ship.initial_scale;
|
|
ship.forward_dir = entryForward(ship);
|
|
}
|
|
}
|
|
|
|
void ShipAnimator::triggerExitAnimation() {
|
|
for (auto& ship : ships_) {
|
|
ship.state = ShipState::EXITING;
|
|
ship.state_time = 0.0F;
|
|
ship.initial_position = ship.current_position;
|
|
ship.forward_dir = exitForward(ship.current_position);
|
|
}
|
|
}
|
|
|
|
void ShipAnimator::triggerExitAnimationForPlayer(int player_id) {
|
|
for (auto& ship : ships_) {
|
|
if (ship.player_id == player_id) {
|
|
ship.state = ShipState::EXITING;
|
|
ship.state_time = 0.0F;
|
|
ship.initial_position = ship.current_position;
|
|
ship.forward_dir = exitForward(ship.current_position);
|
|
break;
|
|
}
|
|
}
|
|
}
|
|
|
|
void ShipAnimator::skipToFloatingState() {
|
|
for (auto& ship : ships_) {
|
|
ship.state = ShipState::FLOATING;
|
|
ship.state_time = 0.0F;
|
|
ship.oscillation_phase = 0.0F;
|
|
ship.current_position = ship.target_position;
|
|
ship.current_scale = ship.target_scale;
|
|
ship.forward_dir = floatingForward(ship.target_position);
|
|
}
|
|
}
|
|
|
|
void ShipAnimator::setVisible(bool visible) {
|
|
for (auto& ship : ships_) {
|
|
ship.visible = visible;
|
|
}
|
|
}
|
|
|
|
auto ShipAnimator::isVisible() const -> bool {
|
|
for (const auto& s : ships_) {
|
|
if (s.visible) {
|
|
return true;
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
auto ShipAnimator::isAnimationComplete() const -> bool {
|
|
for (const auto& s : ships_) {
|
|
if (s.visible) {
|
|
return false;
|
|
}
|
|
}
|
|
return true;
|
|
}
|
|
|
|
void ShipAnimator::updateEntering(TitleShip& ship, float delta_time) {
|
|
ship.state_time += delta_time;
|
|
if (ship.state_time < ship.entry_delay) {
|
|
ship.current_position = ship.initial_position;
|
|
ship.current_scale = ship.initial_scale;
|
|
return;
|
|
}
|
|
const float ELAPSED = ship.state_time - ship.entry_delay;
|
|
const float PROGRESS = std::min(1.0F, ELAPSED / ENTRY_DURATION);
|
|
const float EASED = Easing::easeOutQuad(PROGRESS);
|
|
|
|
// Acumula la fase d'oscil·lació també durant ENTERING; sense això,
|
|
// al passar a FLOATING la posició salta d'amplitud_y de cop perquè
|
|
// l'offset Y comença a sin(π/2) = 1. Acumulant-la abans, la nau
|
|
// ja oscil·la mentre s'aproxima i la transició és contínua.
|
|
ship.oscillation_phase += delta_time;
|
|
|
|
const float INTERP_X = Easing::lerp(ship.initial_position.x, ship.target_position.x, EASED);
|
|
const float INTERP_Y = Easing::lerp(ship.initial_position.y, ship.target_position.y, EASED);
|
|
const float INTERP_Z = Easing::lerp(ship.initial_position.z, ship.target_position.z, EASED);
|
|
|
|
const float TWO_PI = 2.0F * Defaults::Math::PI;
|
|
const float OFFSET_X = ship.amplitude_x *
|
|
std::sin(TWO_PI * ship.frequency_x * ship.oscillation_phase);
|
|
const float OFFSET_Y = ship.amplitude_y *
|
|
std::sin((TWO_PI * ship.frequency_y * ship.oscillation_phase) + FLOAT_PHASE_OFFSET);
|
|
|
|
ship.current_position.x = INTERP_X + OFFSET_X;
|
|
ship.current_position.y = INTERP_Y + OFFSET_Y;
|
|
ship.current_position.z = INTERP_Z;
|
|
ship.current_scale = Easing::lerp(ship.initial_scale, ship.target_scale, EASED);
|
|
|
|
if (ELAPSED >= ENTRY_DURATION) {
|
|
ship.state = ShipState::FLOATING;
|
|
ship.state_time = 0.0F;
|
|
// No resetegem oscillation_phase: així updateFloating continua
|
|
// l'oscil·lació iniciada durant ENTERING sense salt.
|
|
ship.forward_dir = floatingForward(ship.target_position);
|
|
}
|
|
}
|
|
|
|
void ShipAnimator::updateFloating(TitleShip& ship, float delta_time) {
|
|
ship.state_time += delta_time;
|
|
ship.oscillation_phase += delta_time;
|
|
|
|
const float TWO_PI = 2.0F * Defaults::Math::PI;
|
|
const float OFFSET_X = ship.amplitude_x *
|
|
std::sin(TWO_PI * ship.frequency_x * ship.oscillation_phase);
|
|
const float OFFSET_Y = ship.amplitude_y *
|
|
std::sin((TWO_PI * ship.frequency_y * ship.oscillation_phase) + FLOAT_PHASE_OFFSET);
|
|
|
|
ship.current_position.x = ship.target_position.x + OFFSET_X;
|
|
ship.current_position.y = ship.target_position.y + OFFSET_Y;
|
|
ship.current_position.z = ship.target_position.z;
|
|
ship.current_scale = ship.target_scale;
|
|
}
|
|
|
|
void ShipAnimator::updateExiting(TitleShip& ship, float delta_time) {
|
|
ship.state_time += delta_time;
|
|
const float PROGRESS = std::min(1.0F, ship.state_time / EXIT_DURATION);
|
|
const float EASED = Easing::easeInQuad(PROGRESS);
|
|
|
|
// Destí: punt fix a (VP.x, VP.y, VP.z + OVERFLOW). Cada nau s'apropa
|
|
// al centre projectat des del seu costat sense creuar el VP.
|
|
const Vec3 EXIT_DEST{
|
|
.x = VANISHING_POINT.x,
|
|
.y = VANISHING_POINT.y,
|
|
.z = VANISHING_POINT.z + SHIP_EXIT_OVERFLOW,
|
|
};
|
|
ship.current_position.x = Easing::lerp(ship.initial_position.x, EXIT_DEST.x, EASED);
|
|
ship.current_position.y = Easing::lerp(ship.initial_position.y, EXIT_DEST.y, EASED);
|
|
ship.current_position.z = Easing::lerp(ship.initial_position.z, EXIT_DEST.z, EASED);
|
|
ship.current_scale = ship.target_scale; // L'escala visual baixa via la perspectiva
|
|
|
|
if (PROGRESS >= 1.0F) {
|
|
ship.visible = false;
|
|
}
|
|
}
|
|
|
|
void ShipAnimator::configureShipP1(TitleShip& ship) {
|
|
ship.state = ShipState::FLOATING;
|
|
ship.state_time = 0.0F;
|
|
// Target i initial sobre el path VP → "les 7" del rellotge (P1).
|
|
ship.target_position = VANISHING_POINT + (PATH_DIR_P1 * TARGET_DIST);
|
|
ship.initial_position = VANISHING_POINT + (PATH_DIR_P1 * ENTRY_DIST);
|
|
ship.current_position = ship.initial_position;
|
|
ship.target_scale = SHIP_FLOAT_SCALE;
|
|
ship.current_scale = SHIP_FLOAT_SCALE;
|
|
ship.initial_scale = SHIP_ENTRY_SCALE;
|
|
ship.oscillation_phase = 0.0F;
|
|
ship.entry_delay = P1_ENTRY_DELAY;
|
|
ship.amplitude_x = FLOAT_AMPLITUDE_X;
|
|
ship.amplitude_y = FLOAT_AMPLITUDE_Y;
|
|
ship.frequency_x = FLOAT_FREQUENCY_X_BASE * P1_FREQUENCY_MULTIPLIER;
|
|
ship.frequency_y = FLOAT_FREQUENCY_Y_BASE * P1_FREQUENCY_MULTIPLIER;
|
|
ship.forward_dir = entryForward(ship);
|
|
ship.visible = true;
|
|
}
|
|
|
|
void ShipAnimator::configureShipP2(TitleShip& ship) {
|
|
ship.state = ShipState::FLOATING;
|
|
ship.state_time = 0.0F;
|
|
// Target i initial sobre el path VP → "les 5" del rellotge (P2).
|
|
ship.target_position = VANISHING_POINT + (PATH_DIR_P2 * TARGET_DIST);
|
|
ship.initial_position = VANISHING_POINT + (PATH_DIR_P2 * ENTRY_DIST);
|
|
ship.current_position = ship.initial_position;
|
|
ship.target_scale = SHIP_FLOAT_SCALE;
|
|
ship.current_scale = SHIP_FLOAT_SCALE;
|
|
ship.initial_scale = SHIP_ENTRY_SCALE;
|
|
ship.oscillation_phase = 0.0F;
|
|
ship.entry_delay = P2_ENTRY_DELAY;
|
|
ship.amplitude_x = FLOAT_AMPLITUDE_X;
|
|
ship.amplitude_y = FLOAT_AMPLITUDE_Y;
|
|
ship.frequency_x = FLOAT_FREQUENCY_X_BASE * P2_FREQUENCY_MULTIPLIER;
|
|
ship.frequency_y = FLOAT_FREQUENCY_Y_BASE * P2_FREQUENCY_MULTIPLIER;
|
|
ship.forward_dir = entryForward(ship);
|
|
ship.visible = true;
|
|
}
|
|
|
|
} // namespace Title
|