net.dermetfan.gdx.physics.box2d.kryo.serializers.PolygonShapeSerializer Maven / Gradle / Ivy

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/** Copyright 2014 Robin Stumm ([email protected], http://dermetfan.net)
 *
 *  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 net.dermetfan.gdx.physics.box2d.kryo.serializers;

import com.badlogic.gdx.math.Vector2;
import com.badlogic.gdx.physics.box2d.PolygonShape;
import com.esotericsoftware.kryo.Kryo;
import com.esotericsoftware.kryo.Serializer;
import com.esotericsoftware.kryo.io.Input;
import com.esotericsoftware.kryo.io.Output;

public class PolygonShapeSerializer extends Serializer {

	public static final PolygonShapeSerializer instance = new PolygonShapeSerializer();

	private static final Vector2 tmp = new Vector2();

	/** singleton */
	private PolygonShapeSerializer() {}

	@Override
	public void write(Kryo kryo, Output output, PolygonShape shape) {
		output.writeByte(shape.getVertexCount());
		for(int i = 0, n = shape.getVertexCount(); i < n; i++) {
			shape.getVertex(i, tmp);
			output.writeFloat(tmp.x);
			output.writeFloat(tmp.y);
		}
	}

	@Override
	public PolygonShape read(Kryo kryo, Input input, Class type) {
		PolygonShape shape = new PolygonShape();
		float[] vertices = new float[input.readByte() * 2];
		for(int i = 0; i < vertices.length; i++)
			vertices[i] = input.readFloat();
		shape.set(vertices);
		return shape;
	}

}