Process tileset.

src/display/scene/overworld/sceneoverworld.h

@@ -8,6 +8,7 @@
 #pragma once
 #include "display/camera.h"
 #include "rpg/world/map.h"
+#include "error/error.h"
 
 typedef struct {
   camera_t camera;
@@ -18,7 +19,7 @@ extern sceneoverworld_t SCENE_OVERWORLD;
 /**
  * Initialize the overworld scene.
  */
-void sceneOverworldInit(void);
+errorret_t sceneOverworldInit(void);
 
 /**
  * Update the overworld scene.