net.dermetfan.gdx.physics.box2d.kryo.serializers.EdgeShapeSerializer 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.EdgeShape;
import com.esotericsoftware.kryo.Kryo;
import com.esotericsoftware.kryo.Serializer;
import com.esotericsoftware.kryo.io.Input;
import com.esotericsoftware.kryo.io.Output;

public class EdgeShapeSerializer extends Serializer {

	public static final EdgeShapeSerializer instance = new EdgeShapeSerializer();

	private static final Vector2 tmp = new Vector2();

	/** spares us one byte lol */
	private static final byte NONE = 0, V0 = 1, V3 = 2, BOTH = 3;

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

	@Override
	public void write(Kryo kryo, Output output, EdgeShape shape) {
		shape.getVertex1(tmp);
		output.writeFloat(tmp.x);
		output.writeFloat(tmp.y);
		shape.getVertex2(tmp);
		output.writeFloat(tmp.x);
		output.writeFloat(tmp.y);
		boolean v0 = shape.hasVertex0(), v3 = shape.hasVertex3();
		output.writeByte(v0 && v3 ? BOTH : v0 ? V0 : v3 ? V3 : NONE);
		if(v0) {
			shape.getVertex0(tmp);
			output.writeFloat(tmp.x);
			output.writeFloat(tmp.y);
		}
		if(v3) {
			shape.getVertex3(tmp);
			output.writeFloat(tmp.x);
			output.writeFloat(tmp.y);
		}
	}

	@Override
	public EdgeShape read(Kryo kryo, Input input, Class type) {
		EdgeShape shape = new EdgeShape();
		shape.set(input.readFloat(), input.readFloat(), input.readFloat(), input.readFloat());
		byte g = input.readByte();
		boolean v0 = g == V0 || g == BOTH, v3 = g == V3 || g == BOTH;
		shape.setHasVertex0(v0);
		shape.setHasVertex3(v3);
		if(v0)
			shape.setVertex0(input.readFloat(), input.readFloat());
		if(v3)
			shape.setVertex3(input.readFloat(), input.readFloat());
		return shape;
	}

}