com.artemis.link.EntityFieldMutator Maven / Gradle / Ivy

Go to download
package com.artemis.link;

import com.artemis.Component;
import com.artemis.Entity;
import com.artemis.World;
import com.artemis.utils.reflect.Field;
import com.artemis.utils.reflect.ReflectionException;

class EntityFieldMutator implements UniFieldMutator {
	private World world;

	@Override
	public int read(Component c, Field f) {
		try {
			Entity e = (Entity) f.get(c);
			return (e != null) ? e.getId() : -1;
		} catch (ReflectionException exc) {
			throw new RuntimeException(exc);
		}
	}

	@Override
	public void write(int value, Component c, Field f) {
		try {
			Entity e = (value != -1) ? world.getEntity(value) : null;
			f.set(c, e);
		} catch (ReflectionException exc) {
			throw new RuntimeException(exc);
		}
	}

	@Override
	public void setWorld(World world) {
		this.world = world;
	}
}