fully implement bevy asset loader

engine/world_generation/src/biome_asset.rs

@@ -26,8 +26,7 @@ create_asset_loader!(
 	BiomeAssetPlugin,
 	BiomeAssetLoader,
 	BiomeAsset,
-	BiomeAssetLoadState,
-	&["bimoe.json"],
+	&["biome", "biome.ron"],
 	tile_mapper_path -> tile_mapper
 	;
 	?

engine/world_generation/src/tile_manager.rs

@@ -33,4 +33,4 @@ pub struct TileAsset {
 	pub side_texture: String,
 }
 
-create_asset_loader!(TileAssetPlugin, TileAssetLoader, TileAsset, TileAssetLoadState, &["tile.json"],;?);
+create_asset_loader!(TileAssetPlugin, TileAssetLoader, TileAsset, &["tile", "tile.ron"],;?);

engine/world_generation/src/tile_mapper.rs

@@ -31,8 +31,7 @@ create_asset_loader!(
 	TileMapperAssetPlugin,
 	TileMapperAssetLoader,
 	TileMapperAsset,
-	TileMapperLoadState,
-	&["mapper.json"],;
+	&["mapper", "mapper.ron"],;
 	tiles_path -> tiles
 	?
 );