sprite.java

this a game,you can learn the j2me content by this project

/*
 * Copyright (c) 2002, 2003 Sun Microsystems, Inc. All Rights Reserved.
 * Redistribution and use in source and binary forms, with or without
 * modification, are permitted provided that the following conditions are
 * met:
 * - Redistribution of source code must retain the above copyright
 * notice, this list of conditions and the following disclaimer.
 * - Redistribution 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 Sun Microsystems, Inc., 'Java', 'Java'-based
 * names, or the names of contributors may be used to endorse or promote
 * products derived from this software without specific prior written
 * permission.
 * This software is provided "AS IS," without a warranty of any kind. ALL
 * EXPRESS OR IMPLIED CONDITIONS, REPRESENTATIONS AND WARRANTIES,
 * INCLUDING ANY IMPLIED WARRANTY OF MERCHANTABILITY, FITNESS FOR A
 * PARTICULAR PURPOSE OR NON-INFRINGEMENT, ARE HEREBY EXCLUDED. SUN
 * MIDROSYSTEMS, INC. ("SUN") AND ITS LICENSORS SHALL NOT BE LIABLE FOR
 * ANY DAMAGES SUFFERED BY LICENSEE AS A RESULT OF USING, MODIFYING OR
 * DISTRIBUTING THIS SOFTWARE OR ITS DERIVATIVES. IN NO EVENT WILL SUN OR
 * ITS LICENSORS BE LIABLE FOR ANY LOST REVENUE, PROFIT OR DATA, OR FOR
 * DIRECT, INDIRECT, SPECIAL, CONSEQUENTIAL, INCIDENTAL OR PUNITIVE
 * DAMAGES, HOWEVER CAUSED AND REGARDLESS OF THE THEORY OF LIABILITY,
 * ARISING OUT OF THE USE OF OR INABILITY TO USE THIS SOFTWARE, EVEN IF
 * SUN HAS BEEN ADVISED OF THE POSSIBILITY OF SUCH DAMAGES.
 * You acknowledge that this software is not designed, licensed or
 * intended for use in the design, construction, operation or maintenance
 * of any nuclear facility. $Id: Sprite.java,v 1.2 2003/05/16 00:25:15 zull Exp $
 */
package com.sun.j2me.blueprints.jbricks;

import javax.microedition.lcdui.Graphics;

/**
 * Provide some basic sprite functionality:
 * getting and setting of coordinates and
 * dimensions, as well as simple collision
 * detection.
 */
public class Sprite {
    public int x;
    public int y;
    public int width;
    public int height;
    public int shadow;

    public Sprite() {
        shadow = Math.max(2, Screen.width / 60);
    }

    public int getCenterX() {
        return x + width / 2;
    } 

    public int getCenterY() {
        return y + height / 2;
    } 

    public void moveTo(int x, int y) {
        this.x = x;
        this.y = y;
    } 

    public void moveBy(int x, int y) {
        this.x += x;
        this.y += y;
    } 

    public void paint(Graphics g) {}

    public void paintShadow(Graphics g) {}

    public boolean intersects(Sprite other) {
        int xw = x + width;
        int yh = y + height;
        int oxw = other.x + other.width;
        int oyh = other.y + other.height;

        return x >= other.x && x < oxw && y >= other.y && y < oyh 
               || xw >= other.x && xw < oxw && y >= other.y && y < oyh 
               || x >= other.x && x < oxw && yh >= other.y && yh < oyh 
               || xw >= other.x && xw < oxw && yh >= other.y && yh < oyh;
    } 

}