move platformes and scenery to /apps/demos/

apps/demos/platformer/world.h

@@ -0,0 +1,44 @@
+#ifndef WORLD_H
+#define WORLD_H
+
+#include "twn_game_api.h"
+
+#include <stdint.h>
+#include <stdbool.h>
+
+
+typedef enum TileType {
+    TILE_TYPE_VOID,
+    TILE_TYPE_SOLID,
+} TileType;
+
+
+typedef struct Tile {
+    Recti rect;
+    TileType type;
+} Tile;
+
+
+typedef struct World {
+    TileType **tilemap;
+    Tile *tiles;
+    
+    int tile_size;
+    unsigned int tilemap_width;
+    unsigned int tilemap_height;
+    size_t tile_nonvoid_count;
+    float gravity;
+} World;
+
+
+World *world_create(void);
+void world_destroy(World *world);
+void world_drawdef(World *world);
+bool world_find_intersect_frect(World *world, Rect rect, Rect *intersection);
+bool world_find_intersect_rect(World *world, Recti rect, Recti *intersection);
+bool world_is_tile_at(World *world, float x, float y);
+void world_place_tile(World *world, float x, float y);
+void world_remove_tile(World *world, float x, float y);
+
+
+#endif