TileMapRendererLoader.java

/*******************************************************************************
 * Copyright 2011 See AUTHORS file.
 * 
 * Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file except in compliance with
 * the License. You may obtain a copy of the License at
 * 
 * http://www.apache.org/licenses/LICENSE-2.0
 * 
 * Unless required by applicable law or agreed to in writing, software distributed under the License is distributed on
 * an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the License for the
 * specific language governing permissions and limitations under the License.
 ******************************************************************************/

package com.badlogic.gdx.assets.loaders;

import com.badlogic.gdx.assets.AssetDescriptor;
import com.badlogic.gdx.assets.AssetLoaderParameters;
import com.badlogic.gdx.assets.AssetManager;
import com.badlogic.gdx.graphics.g2d.tiled.TileAtlas;
import com.badlogic.gdx.graphics.g2d.tiled.TileMapRenderer;
import com.badlogic.gdx.graphics.g2d.tiled.TiledLoader;
import com.badlogic.gdx.graphics.g2d.tiled.TiledMap;
import com.badlogic.gdx.utils.Array;

/**
 * {@link AssetLoader} for {@link TiledMap} instances.
 * 
 * @author mzechner
 */
public class TileMapRendererLoader extends
		SynchronousAssetLoader<TileMapRenderer, TileMapRendererLoader.TileMapParameter> {
	/**
	 * Parameter for {@link TileMapRendererLoader}.
	 * 
	 * @author mzechner
	 */
	public static class TileMapParameter extends AssetLoaderParameters<TileMapRenderer> {
		/** the directory the images (pack files) are stored in **/
		public final String imageDirectory;
		public final int tilesPerBlockX;
		public final int tilesPerBlockY;
		public final float unitsPerTileX;
		public final float unitsPerTileY;

		public TileMapParameter(String imageDirectory, int tilesPerBlockX, int tilesPerBlockY) {
			this.imageDirectory = imageDirectory;
			this.tilesPerBlockX = tilesPerBlockX;
			this.tilesPerBlockY = tilesPerBlockY;
			this.unitsPerTileX = 0.0f;
			this.unitsPerTileY = 0.0f;
		}

		public TileMapParameter(String imageDirectory, int tilesPerBlockX, int tilesPerBlockY, float unitsPerTileX,
				float unitsPerTileY) {
			this.imageDirectory = imageDirectory;
			this.tilesPerBlockX = tilesPerBlockX;
			this.tilesPerBlockY = tilesPerBlockY;
			this.unitsPerTileX = unitsPerTileX;
			this.unitsPerTileY = unitsPerTileY;
		}
	}

	public TileMapRendererLoader(FileHandleResolver resolver) {
		super(resolver);
	}

	@Override
	public Array<AssetDescriptor> getDependencies(String fileName, TileMapParameter parameter) {
		if (parameter == null)
			throw new IllegalArgumentException("Missing TileMapRendererParameter: " + fileName);
		return null;
	}

	@Override
	public TileMapRenderer load(AssetManager assetManager, String fileName, TileMapParameter parameter) {
		TiledMap map = TiledLoader.createMap(resolve(fileName));
		TileAtlas atlas = new TileAtlas(map, resolve(parameter.imageDirectory));
		if (parameter.unitsPerTileX == 0 || parameter.unitsPerTileY == 0)
			return new TileMapRenderer(map, atlas, parameter.tilesPerBlockX, parameter.tilesPerBlockY);
		else
			return new TileMapRenderer(map, atlas, parameter.tilesPerBlockX, parameter.tilesPerBlockY,
					parameter.unitsPerTileX, parameter.unitsPerTileY);
	}
}