refactor: header file for every module

include/engine.h

@@ -118,6 +118,13 @@ typedef struct {
   float weight;
 } Physics;
 
+typedef struct {
+  bool overlapping;
+  bool hasDirection; // false when centers coincide, direction/overlap unset
+  Vector2 direction;  // normalized, points from B to A
+  float overlap;
+} CircleCollision;
+
 typedef struct {
   Shader shader;
   int resolutionLoc;
@@ -152,13 +159,12 @@ void UpdateArray(Array *array, void (*updateFunc)(void *));
 void RenderArray(Array *array, void (*renderFunc)(void *));
 void FreeArray(Array **array);
 
-Camera2D *GetCamera(void);
-Rectangle GetCameraRectangle(void);
-void CreateCamera(Vector2 playerPosition, float initZoom);
-void UpdateCameraTarget(Vector2 *position, const float smoothness);
-void UpdateCameraZoom(const float *scaleFactor, const float *minZoom,
+Rectangle GetCameraRectangle(Camera2D *camera);
+Camera2D CreateCamera(Vector2 playerPosition, float initZoom);
+void UpdateCameraTarget(Camera2D *camera, Vector2 *position, const float smoothness);
+void UpdateCameraZoom(Camera2D *camera, const float *scaleFactor, const float *minZoom,
                       const float *maxZoom);
-void UpdateCamera2D(Vector2 *position, Mouse *mouse);
+void UpdateCamera2D(Camera2D *camera, Vector2 *position, Mouse *mouse);
 
 void InitConfig(Config *config, const char *path);
 int GetConfigInt(Config *config, const char *key);
@@ -182,6 +188,10 @@ ImageButton CreateImageButton(ButtonState state, Texture2D *texture,
                               const TextureAsset *asset, Vector2 *source,
                               Vector2 *clicked, Vector2 *hover,
                               Rectangle *destRec);
+ImageButton CreateMenuButton(Texture2D *texture, const TextureAsset *asset,
+                             int textureRow, int screenRank, int buttonWidth,
+                             int buttonHeight, Vector2 windowCenter,
+                             int buttonSpacing);
 ImageElement CreateImageElement(Texture2D *texture, const TextureAsset *asset,
                                 Vector2 *source, Rectangle *destRec);
 int isImageButtonClicked(ImageButton *b, Sound soundHover, Sound soundClick);
@@ -195,7 +205,7 @@ void renderButton(Button *b);
 Mouse CreateMouse(float zoomSpeed, float minZoom, float maxZoom,
                   Texture2D *texture);
 void UpdateMouseScreen(Mouse *mouse);
-void UpdateMouse(Mouse *mouse);
+void UpdateMouse(Mouse *mouse, Camera2D *camera);
 Vector2 GetDirectionVector(void);
 
 ObjectArray CreateObjectArray(const Object *prototype, const size_t count);
@@ -220,6 +230,9 @@ void UpdatePhysicsPosition(Vector2 *position, Vector2 *velocity);
 void UpdatePhysicsSpeed(float *speed, float *newSpeed);
 void UpdatePhysics(Physics *physics, Vector2 direction);
 
+CircleCollision CheckCircleCollision(Vector2 posA, float radiusA,
+                                     Vector2 posB, float radiusB);
+
 PostProcessing CreatePostFX(const char *shaderPath);
 void UpdatePostFX(PostProcessing *postFX);
 void RenderPostFX(PostProcessing *postFX, RenderTexture2D *target);
@@ -243,7 +256,11 @@ float Cross2D(Vector2 a, Vector2 b);
 Vector2 GetPositionInsideRectangle(Rectangle rec);
 Vector2 GetPositionOutsideRectangle(Rectangle rec, int min, int max);
 
-bool SaveStorageValue(const char *fileName, unsigned int position, int value);
-int LoadStorageValue(const char *fileName, unsigned int position);
+bool SaveStorageData(const char *fileName, int version, const void *data, unsigned int dataSize);
+bool LoadStorageData(const char *fileName, int expectedVersion, void *data, unsigned int dataSize);
+
+Texture2D LoadTextureCached(const char *path);
+Sound LoadSoundCached(const char *path);
+void UnloadCachedAssets(void);
 
 #endif // ENGINE_H