DrawableGameComponent.java

/**
 * Copyright 2008 - 2012
 * 
 * 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.
 * 
 * @project loon
 * @author cping
 * @email：javachenpeng@yahoo.com
 * @version 0.3.3
 */
package loon.action.sprite.painting;

import loon.action.sprite.SpriteBatch;
import loon.utils.timer.GameTime;

public class DrawableGameComponent extends GameComponent implements IDrawable {

	private boolean _isInitialized;
	private boolean _isVisible;
	private int _drawOrder;

	public DrawableGameComponent(DrawableScreen game) {
		super(game);
		setVisible(true);
	}

	@Override
	public void initialize() {
		if (!_isInitialized) {
			_isInitialized = true;
			loadContent();
		}
	}

	protected void loadContent() {
	}

	protected void unloadContent() {
	}

	public final int getDrawOrder() {
		return _drawOrder;
	}

	private ComponentEvent DrawOrder;

	public final void setDrawOrder(int value) {
		_drawOrder = value;
		if (DrawOrder != null) {
			DrawOrder.invoke(this);
		}
	}

	public final boolean getVisible() {
		return _isVisible;
	}

	private ComponentEvent Visible;

	public final void setVisible(boolean value) {
		if (_isVisible != value) {
			_isVisible = value;
			if (Visible != null) {
				Visible.invoke(this);
			}
		}
	}

	public void draw(SpriteBatch batch, GameTime gameTime) {
	}

	public void setDrawOrder(ComponentEvent drawOrder) {
		DrawOrder = drawOrder;
	}

	public void setVisible(ComponentEvent visible) {
		Visible = visible;
	}

}