Scene stack logic

1 files changed, 22 insertions, 9 deletions

diff --git a/src/scenes/scenes.h b/src/scenes/scenes.h
index 88295e6..7ad34af 100644
--- a/src/scenes/scenes.h
+++ b/src/scenes/scenes.h
@@ -1,17 +1,30 @@
+#include <stdbool.h>
+
 #ifndef SCENES_H
 #define SCENES_H
 
-/// The scene that the action should be executed upon
-enum SCENE {
-    MAIN_MENU,
-};
+#define SCENE_STACK_SIZE 16
+
+/// This structure represents a scene that is stored in a stack.
+/// The main appeal of this data type is dynamic creation of different
+/// scenes that don't depend on global state
+typedef struct {
+    bool (*Update)(void *self);
+    bool (*Draw)(void *self);
+    void (*Deint)(void *self);
+    /// A generic pointer to whatever data the scene needs. You will have to
+    /// cast it yourself
+    void *data;
+} Scene;
+
+bool InitSceneStack();
 
-void DrawScene(enum SCENE scene);
-void UpdateScene(enum SCENE scene);
+bool AddScene(Scene *newScene);
+void DeleteSceneFromStack();
 
+bool DrawScene();
+bool UpdateScene();
 
-// ========== MAIN MENU ==========
-void MainMenuUpdate();
-void MainMenuDraw();
+Scene *CreateMainMenu();
 
 #endif // SCENES_H