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/*******************************************************************************
 * 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;

/** 
 * Represents one of many application screens, such as a main menu, a settings menu, the game screen and so on.
 * 
 * 
 * Note that {@link #dispose()} is not called automatically.
 * 
 * @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 ();
}