下面可以实现你说的功能
演示效果,请看
http://www.klstudio.com/post/119.html复制内容到剪贴板
代码:
package {
import flash.display.*;
import flash.net.*;
import flash.utils.Timer;
import flash.events.*;
import flash.geom.*;
public class GameSprite extends Sprite {
private var timer:Timer;
private var sWidth:uint;
private var sHeight:uint;
private var sStep:uint;
private var sDirection:uint;
private var loader:Loader;
private var maps:Array;
private var pointer:uint;
private var map:Bitmap;
function GameSprite() {
//角色大小;
sWidth = 100;
sHeight = 100;
//角色移动方向;
sDirection = 0;
//角色步数;
sStep = 1;
//角色动作数组;
maps = new Array();
//初始化角色动作运行指针;
pointer = 0;
//初始化time;
timer = new Timer(100);
timer.addEventListener(TimerEvent.TIMER, timerHandler);
//图片加载对象;
loader = new Loader();
loader.contentLoaderInfo.addEventListener(Event.COMPLETE, completeHandler);
loader.contentLoaderInfo.addEventListener(IOErrorEvent.IO_ERROR, errorHandler);
loader.load(new URLRequest("/download/sprite.png"));
stage.addEventListener(KeyboardEvent.KEY_DOWN, keyDownHandler);
}
//错误处理事件;
private function errorHandler(event:IOErrorEvent):void {
trace("IOErrorEvent");
}
//键盘事件,通过方向键更改角色移动方向;
private function keyDownHandler(event:KeyboardEvent):void {
switch (event.keyCode) {
case 40 :
sDirection = 0;
break;
case 38 :
sDirection = 3;
break;
case 37 :
sDirection = 1;
break;
case 39 :
sDirection = 2;
break;
}
}
//定时器运行事件;
private function timerHandler(event:Event):void {
//删除旧的角色动作图像;
if (map != null) {
removeChild(map);
}
//显示新的角色动作图像;
map = new Bitmap(maps[sDirection][pointer]);
addChild(map);
//角色动作循环处理;
if (pointer < sStep-1) {
pointer ++;
} else {
pointer = 0;
}
}
//加载图片完成处理事件;
private function completeHandler(event:Event):void {
//根据图片的大小初始化BitmapData;
/*
* 注意如果你要保留原来的图片的透明度的话，必将transparent设置为true,同时设置填充色值的前两位为00;
*/
var sBmd:BitmapData = new BitmapData(loader.width,loader.height,true,0x00FFFFFF);
sBmd.draw(loader);
//计算移动步数;
sStep = Math.floor(loader.width/sWidth);
for (var j:uint = 0; j<Math.floor(loader.height/sHeight); j++) {
var arr:Array = new Array();
for (var i:uint = 0; i<sStep; i++) {
var bmd:BitmapData = new BitmapData(sWidth,sHeight,true,0x00FFFFFF);
//获取单个角色的BitmapData对象;
bmd.copyPixels(sBmd,new Rectangle(sWidth*i, sHeight*j, sWidth, sHeight),new Point(0,0));
arr.push(bmd);
}
//放入角色数组里;
maps.push(arr);
}
//释放sBmd资源;
sBmd.dispose();
//开始运行角色动作;
timer.start();
}
}
}
