Process tileset.

src/display/scene/scene.h

@@ -7,12 +7,13 @@
 
 #pragma once
 #include "dusk.h"
+#include "error/error.h"
 
 #define SCENE_FLAG_VISIBLE (1 << 0)
 #define SCENE_FLAG_ACTIVE (1 << 1)
 
 typedef struct {
-  void (*init)(void);
+  errorret_t (*init)(void);
   void (*update)(void);
   void (*render)(void);
   void (*dispose)(void);