Screen.java

/*******************************************************************************
 * Copyright 2011 See AUTHORS file.
 * 
 * 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 com.badlogic.gdx;

/**
 * <p>
 * Represents one of many application screens, such as a main menu, a settings menu, the game screen and so on.
 * </p>
 * <p>
 * Note that {@link #dispose()} is not called automatically.
 * </p>
 * 
 * @see Game
 */
public interface Screen {
	/**
	 * Called when the screen should render itself.
	 * 
	 * @param delta
	 *            The time in seconds since the last render.
	 */
	public void render(float delta);

	/** @see ApplicationListener#resize(int, int) */
	public void resize(int width, int height);

	/** Called when this screen becomes the current screen for a {@link Game}. */
	public void show();

	/** Called when this screen is no longer the current screen for a {@link Game}. */
	public void hide();

	/** @see ApplicationListener#pause() */
	public void pause();

	/** @see ApplicationListener#resume() */
	public void resume();

	/** Called when this screen should release all resources. */
	public void dispose();
}