feat(动画系统): 实现动画系统基础功能

添加动画组件及相关数据结构，支持从PVF加载动画资源
实现动画播放、帧控制、插值逻辑等功能
更新主程序以测试动画系统

Frostbite2D/include/frostbite2D/animation/animation.h

@@ -0,0 +1,81 @@
+#pragma once
+
+#include <frostbite2D/2d/actor.h>
+#include <frostbite2D/animation/animation_data.h>
+#include <functional>
+#include <string>
+#include <vector>
+#include <unordered_map>
+
+namespace frostbite2D {
+
+class Sprite;
+
+class Animation : public Actor {
+public:
+  struct ReplaceData {
+    int param1 = 0;
+    int param2 = 0;
+    ReplaceData() = default;
+    ReplaceData(int p1, int p2) : param1(p1), param2(p2) {}
+  };
+
+public:
+  Animation();
+  explicit Animation(const std::string& aniPath);
+  Animation(const std::string& aniPath,
+            std::function<std::string(std::string, ReplaceData)> additionalOptions,
+            ReplaceData data);
+  ~Animation();
+
+  void Init(const std::string& aniPath);
+
+  void Update(float deltaTime) override;
+  void OnAdded(Actor* parent);
+  void SetVisible(bool visible);
+
+public:
+  void FlushFrame(int index);
+  void Reset();
+  animation::AniFrame GetCurrentFrameInfo();
+  void SetFrameIndex(int index);
+  void InterpolationLogic();
+
+  Vec2 GetMaxSize() const;
+
+  bool IsUsable() const { return usable_; }
+  void SetUsable(bool usable) { usable_ = usable; }
+
+  int GetCurrentFrameIndex() const { return currentFrameIndex_; }
+  int GetTotalFrameCount() const { return totalFrameCount_; }
+
+public:
+  bool usable_ = true;
+  int currentFrameIndex_ = 0;
+  int totalFrameCount_ = 0;
+  float currentFrameTime_ = 0.0f;
+  Ptr<Sprite> currentFrame_ = nullptr;
+  float nextFrameDelay_ = 9999999.0f;
+
+  bool isLooping_ = true;
+
+  std::function<void(int)> changeFrameCallback_;
+  std::function<void()> endCallback_;
+
+  std::vector<animation::AniFrame> frames_;
+  std::vector<Ptr<Sprite>> spriteFrames_;
+
+  std::unordered_map<std::string, animation::AniFlag> animationFlag_;
+
+  std::string type_ = "normal";
+  std::string aniPath_;
+
+  std::function<std::string(std::string, ReplaceData)> additionalOptions_;
+  ReplaceData additionalOptionsData_;
+
+  Vec2 maxSize_ = Vec2::Zero();
+
+  std::vector<animation::AniFrame> interpolationData_;
+};
+
+} // namespace frostbite2D