Examples:SpaceInvaders ShipEntity

 /* * Copyright (c) 2002-2010 LWJGL Project * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions are * met: * * * Redistributions of source code must retain the above copyright *  notice, this list of conditions and the following disclaimer. * * * Redistributions in binary form must reproduce the above copyright *  notice, this list of conditions and the following disclaimer in the *  documentation and/or other materials provided with the distribution. * * * Neither the name of 'LWJGL' nor the names of *   its contributors may be used to endorse or promote products derived *  from this software without specific prior written permission. * * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED * TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR * PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, * EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, * PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR  * PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF * LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING  * NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. */ package org.lwjgl.examples.spaceinvaders;

/** * The entity that represents the players ship * * @author Kevin Glass * @author Brian Matzon */ public class ShipEntity extends Entity { /** Right border at which to disallow further movement */ private static final int RIGHT_BORDER      = 750;

/** Left border at which to disallow further movement */ private static final int LEFT_BORDER       = 10; /** The game in which the ship exists */ private Game game; /**	 * Create a new entity to represent the players ship * 	 * @param game The game in which the ship is being created * @param ref The reference to the sprite to show for the ship * @param x The initial x location of the player's ship * @param y The initial y location of the player's ship */	public ShipEntity(Game game,String ref,int x,int y) { super(game.getSprite(ref), x, y); this.game = game; }	/**	 * Request that the ship move itself based on an elapsed ammount of	 * time * 	 * @param delta The time that has elapsed since last move (ms) */	public void move(long delta) { // if we're moving left and have reached the left hand side // of the screen, don't move if ((dx < 0) && (x < LEFT_BORDER)) { return; }		// if we're moving right and have reached the right hand side // of the screen, don't move if ((dx > 0) && (x > RIGHT_BORDER)) { return; }		super.move(delta); }	/**	 * Notification that the player's ship has collided with something * 	 * @param other The entity with which the ship has collided */	public void collidedWith(Entity other) { // if its an alien, notify the game that the player // is dead if (other instanceof AlienEntity) { game.notifyDeath; }	} }