treballant en la visió original de la intro

source/card_sprite.cpp

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+#include "card_sprite.hpp"
+
+#include <algorithm>   // Para std::clamp
+#include <functional>  // Para function
+#include <utility>     // Para move
+
+#include "texture.hpp"  // Para Texture
+#include "utils.hpp"    // Para easeOutBounce
+
+// Constructor
+CardSprite::CardSprite(std::shared_ptr<Texture> texture)
+    : MovingSprite(std::move(texture)),
+      entry_easing_(easeOutBounce) {}
+
+// Inicia la animación de entrada (solo si está en IDLE)
+void CardSprite::enable() {
+    if (state_ != CardState::IDLE) {
+        return;
+    }
+
+    state_ = CardState::ENTERING;
+    entry_elapsed_ = 0.0F;
+
+    // Posición fija en el punto de aterrizaje
+    setPos(landing_x_, landing_y_);
+
+    // Zoom inicial grande (como si estuviera cerca de la cámara)
+    horizontal_zoom_ = start_zoom_;
+    vertical_zoom_ = start_zoom_;
+
+    // Ángulo inicial
+    rotate_.angle = start_angle_;
+    rotate_.center = {pos_.w / 2.0F, pos_.h / 2.0F};
+
+    shadow_visible_ = true;
+}
+
+// Inicia la animación de salida (solo si está en LANDED)
+void CardSprite::startExit() {
+    if (state_ != CardState::LANDED) {
+        return;
+    }
+
+    state_ = CardState::EXITING;
+    shadow_visible_ = false;
+
+    // Velocidad y aceleración de salida
+    vx_ = exit_vx_;
+    vy_ = exit_vy_;
+    ax_ = exit_ax_;
+    ay_ = exit_ay_;
+
+    // Rotación continua
+    rotate_.enabled = true;
+    rotate_.amount = exit_rotate_amount_;
+    rotate_.center = {pos_.w / 2.0F, pos_.h / 2.0F};
+}
+
+// Actualiza según el estado
+void CardSprite::update(float delta_time) {
+    switch (state_) {
+        case CardState::ENTERING:
+            updateEntering(delta_time);
+            break;
+        case CardState::EXITING:
+            updateExiting(delta_time);
+            break;
+        default:
+            break;
+    }
+}
+
+// Animación de entrada: interpola zoom y ángulo con easing
+void CardSprite::updateEntering(float delta_time) {
+    entry_elapsed_ += delta_time;
+
+    float progress = std::clamp(entry_elapsed_ / entry_duration_s_, 0.0F, 1.0F);
+    double eased = entry_easing_(static_cast<double>(progress));
+
+    // Zoom: de start_zoom_ a 1.0 con rebote
+    auto current_zoom = static_cast<float>(start_zoom_ + (1.0 - start_zoom_) * eased);
+    horizontal_zoom_ = current_zoom;
+    vertical_zoom_ = current_zoom;
+
+    // Ángulo: de start_angle_ a 0 con rebote
+    rotate_.angle = start_angle_ * (1.0 - eased);
+
+    // Offset de sombra escalado con el zoom (perspectiva)
+    // (se aplica en renderShadow)
+
+    // Transición a LANDED cuando termina la animación
+    if (progress >= 1.0F) {
+        horizontal_zoom_ = 1.0F;
+        vertical_zoom_ = 1.0F;
+        rotate_.angle = 0.0;
+        state_ = CardState::LANDED;
+    }
+}
+
+// Animación de salida: movimiento + rotación continua
+void CardSprite::updateExiting(float delta_time) {
+    move(delta_time);
+    rotate(delta_time);
+
+    if (isOffScreen()) {
+        state_ = CardState::FINISHED;
+    }
+}
+
+// Renderiza el sprite y su sombra
+void CardSprite::render() {
+    if (state_ == CardState::IDLE || state_ == CardState::FINISHED) {
+        return;
+    }
+
+    // Sombra primero (debajo de la tarjeta)
+    if (shadow_visible_ && shadow_texture_) {
+        renderShadow();
+    }
+
+    // Tarjeta
+    MovingSprite::render();
+}
+
+// Renderiza la sombra con el mismo zoom y rotación que la tarjeta
+void CardSprite::renderShadow() {
+    // Offset de sombra escalado con el zoom para efecto de perspectiva
+    float scaled_offset_x = shadow_offset_x_ * horizontal_zoom_;
+    float scaled_offset_y = shadow_offset_y_ * vertical_zoom_;
+
+    shadow_texture_->render(
+        pos_.x + scaled_offset_x,
+        pos_.y + scaled_offset_y,
+        &sprite_clip_,
+        horizontal_zoom_,
+        vertical_zoom_,
+        rotate_.angle,
+        &rotate_.center,
+        flip_);
+}
+
+// Comprueba si el sprite está fuera de pantalla
+auto CardSprite::isOffScreen() const -> bool {
+    // Considerar el zoom: el sprite puede ser más grande de lo que indica pos_
+    float effective_width = pos_.w * horizontal_zoom_;
+    float effective_height = pos_.h * vertical_zoom_;
+    return (pos_.x + effective_width < -OFF_SCREEN_MARGIN ||
+            pos_.x > screen_width_ + OFF_SCREEN_MARGIN ||
+            pos_.y + effective_height < -OFF_SCREEN_MARGIN ||
+            pos_.y > screen_height_ + OFF_SCREEN_MARGIN);
+}
+
+// --- Consultas de estado ---
+auto CardSprite::hasLanded() const -> bool {
+    return state_ == CardState::LANDED || state_ == CardState::EXITING || state_ == CardState::FINISHED;
+}
+
+auto CardSprite::hasFinished() const -> bool {
+    return state_ == CardState::FINISHED;
+}
+
+auto CardSprite::isExiting() const -> bool {
+    return state_ == CardState::EXITING;
+}
+
+auto CardSprite::getState() const -> CardState {
+    return state_;
+}
+
+// --- Configuración ---
+void CardSprite::setEntryParams(float start_zoom, double start_angle, float duration_s, std::function<double(double)> easing) {
+    start_zoom_ = start_zoom;
+    start_angle_ = start_angle;
+    entry_duration_s_ = duration_s;
+    entry_easing_ = std::move(easing);
+}
+
+void CardSprite::setLandingPosition(float x, float y) {
+    landing_x_ = x;
+    landing_y_ = y;
+}
+
+void CardSprite::setExitParams(float vx, float vy, float ax, float ay, double rotate_amount) {
+    exit_vx_ = vx;
+    exit_vy_ = vy;
+    exit_ax_ = ax;
+    exit_ay_ = ay;
+    exit_rotate_amount_ = rotate_amount;
+}
+
+void CardSprite::setShadowTexture(std::shared_ptr<Texture> texture) {
+    shadow_texture_ = std::move(texture);
+}
+
+void CardSprite::setShadowOffset(float offset_x, float offset_y) {
+    shadow_offset_x_ = offset_x;
+    shadow_offset_y_ = offset_y;
+}
+
+void CardSprite::setScreenBounds(float width, float height) {
+    screen_width_ = width;
+    screen_height_ = height;
+}