/*
* Copyright 2013 MovingBlocks
*
* 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 org.terasology.world.block.tiles;
import com.google.common.math.IntMath;
import org.terasology.assets.ResourceUrn;
import org.terasology.assets.format.AbstractAssetFileFormat;
import org.terasology.assets.format.AssetDataFile;
import org.terasology.assets.module.annotations.RegisterAssetFileFormat;
import javax.imageio.ImageIO;
import java.awt.image.BufferedImage;
import java.io.IOException;
import java.io.InputStream;
import java.util.List;
/**
* Loader for block tiles
*
*/
@RegisterAssetFileFormat
public class TileFormat extends AbstractAssetFileFormat<TileData> {
public TileFormat() {
super("png");
}
@Override
public TileData load(ResourceUrn resourceUrn, List<AssetDataFile> list) throws IOException {
boolean auto = list.get(0).getPath().contains("auto");
try (InputStream stream = list.get(0).openStream()) {
BufferedImage image = ImageIO.read(stream);
if (!IntMath.isPowerOfTwo(image.getHeight()) || !(image.getWidth() == image.getHeight())) {
throw new IOException("Invalid tile - must be square with power-of-two sides");
}
return new TileData(image, auto);
}
}
}