flash actionscript3.0 游戏人物走动

在上一篇 鼠标跟随基础上扩展游戏人物走动

主要要点是 人物行走 人物行走状态改变

		/*
		* 更变人物动画行走方向
		*/
		private function upfang(d:Number):void{

		  if(d>=-0.524&&d<=0.524)
		   {
			    sDirection = 2;
		   }
           if(d>=0.524&&d<=1.05)
		   {
			    sDirection = 5;
		   }		   
           if(d>=1.05&&d<=2.1)
		   {
			    sDirection = 0;
		   }		
		   
           if(d>=2.1&&d<=2.62)
		   {
			    sDirection = 4;
		   }
           if(d>=2.62||d<=-2.62)
		   {
			    sDirection = 1;
		   }		   
           if(d>=-2.62&&d<=-2.09)
		   {
			    sDirection = 6;
		   }		
		   
		   if(d>=-2.09&&d<=-1.05)
		   {
			    sDirection = 3;
		   }		   
           if(d>=-1.05&&d<=-0.524)
		   {
			    sDirection = 7;
		   } 			   
		}

行走方法是上一篇，用圆方式

			if(plist.length>0&&sun.x==point.x&&sun.y==point.y)
			{
			   point=plist.shift();
			   dx = point.x-sun.x;
               dy = point.y-sun.y;
			   /*
			   //根据三角函数求出弧度也是角度
			   ball.x=centerX+Math.cos(angle)*radius;
			   ball.y=centerY+Math.sin(angle)*radius
			   angle = Math.atan2(dy,dx)*180/Math.PI;
			   */
			   angle=Math.atan2(dy,dx);
 			   upfang(angle);
			}

package 
{
	import flash.display.Sprite;
	import flash.events.*;
	import flash.geom.*;
	import flash.filters.*;
	import flash.display.DisplayObject;
	import flash.display.Bitmap;
	import flash.display.BitmapData;
	import flash.display.Loader;
	import flash.net.URLRequest;
	import flash.net.*;
	import flash.utils.Timer;
	import flash.events.*;
	import flash.geom.*;	
	public class dituyundong extends Sprite
	{
		private var sun,moon:Sprite=new Sprite();//创建容器
		private var centerX:Number=stage.stageWidth/2;
		private var centerY:Number=stage.stageHeight/2;
		private var k,dx,dy,angle:Number=0;
		private var point:Point=new Point();
		private var plist:Array=new Array();
		private var loader,loaderp:Loader;
		
		private var timer:Timer;
		private var sWidth:uint;
		private var sHeight:uint;
		private var sStep:uint;
		private var sDirection:uint;
		private var maps:Array;
		private var pointer:uint;
		private var map:Bitmap;
		
		public function dituyundong()
		{			
		    //加载地图，先显示
			loader = new Loader();
			loader.contentLoaderInfo.addEventListener(Event.COMPLETE,completeDitu);
			loader.contentLoaderInfo.addEventListener(IOErrorEvent.IO_ERROR,errorHandler);
			loader.load(new URLRequest("ditu.jpg"));
			//画人物容器
			sun=new Sprite();
			addChild(sun);
		    sun.graphics.beginFill(0x00ffcc00,0);
		    sun.graphics.drawRect(0,64,64);
		    sun.graphics.endFill();			
			
			//人物位置在舞台中间
			sun.x=centerX;
			sun.y=centerY;
			sun.z=0;			
							
			point.x=sun.x;
			point.y=sun.y; 
			//鼠标点中后停住
			sun.addEventListener(MouseEvent.MOUSE_DOWN,clearStep);
			//倾听舞台鼠标点击
			stage.addEventListener(MouseEvent.MOUSE_DOWN,Mousedown);
           //加入帧事件
			addEventListener(Event.ENTER_FRAME,Run);
			
				//角色大小;
			sWidth = 64;
			sHeight = 64;
			//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);
			//图片加载人物对象;
			loaderp = new Loader();
			loaderp.contentLoaderInfo.addEventListener(Event.COMPLETE,completeHandler);
			loaderp.contentLoaderInfo.addEventListener(IOErrorEvent.IO_ERROR,errorHandler);
			loaderp.load(new URLRequest("a1.png"));		
			stage.addEventListener(KeyboardEvent.KEY_DOWN,keyDownHandler);
		}
        //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 :
				case 98 :
					sDirection = 0;
					plist.push(new Point(sun.x,sun.y+10));
					break;
				case 38 :
				case 104 :
					sDirection = 3;
					plist.push(new Point(sun.x,sun.y-10));
					break;
				case 37 :
				case 100 :
					sDirection = 1;
					plist.push(new Point(sun.x-10,sun.y));
					break;
				case 39 :
				case 102 :
					sDirection = 2;
					plist.push(new Point(sun.x+10,sun.y));
					break;
				case 103 :
					sDirection = 6;
					plist.push(new Point(sun.x-10,sun.y-10));
					break;
				case 105 :
					sDirection = 7;
					plist.push(new Point(sun.x+10,sun.y-10));
					break;
				case 97 :
					sDirection = 4;
					plist.push(new Point(sun.x-10,sun.y+10));
					break;
				case 99 :
					sDirection = 5;
					plist.push(new Point(sun.x+10,sun.y+10));
					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) {
				sun.removeChild(map);
			}
			//显示新的角色动作图像;
			map = new Bitmap(maps[sDirection][pointer]);
			map.x=-32;
			map.y=-32;
			sun.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(loaderp.width,loader.height,true,0x00FFFFFF);
			sBmd.draw(loaderp);
			//计算移动步数;
			sStep = Math.floor(loaderp.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,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();
		}		
			//错误处理事件;
		private function errorHandler(event:IOErrorEvent):void {
			trace("IOErrorEvent");

		}
		private function completeDitu(event:Event):void {
			var sBmd:BitmapData = new BitmapData(loader.width,false,0xFFFFFF);
			sBmd.draw(loader);
			var bitmap:Bitmap=new Bitmap(sBmd);
           addChild(bitmap);
		   setChildIndex(sun,numChildren-1);
		}
		public function clearStep(e:Event):void{
			 plist=new Array();
			 point.x=sun.x;
			 point.y=sun.y; 
			 e.stopPropagation();
		}
		public function Run(e:Event):void{
			   dx = point.x-sun.x;
               dy = point.y-sun.y;
			   //如果小于5，设置为目标点
			   if(Math.abs(dx)<5&&Math.abs(dy)<5)
			   {				     
				     sun.x=point.x;
			         sun.y=point.y;  
				}else{
					 var oa:Number=angle;
					 angle=Math.atan2(dy,dx);
				  	 sun.x=sun.x+Math.cos(angle)*5;
			         sun.y=sun.y+Math.sin(angle)*5;
					 //对比下是否改变了角度
					 if(angle!=oa)
					 {
						upfang(angle);
					 }
				}
			if(plist.length>0&&sun.x==point.x&&sun.y==point.y)
			{
			   point=plist.shift();
			   dx = point.x-sun.x;
               dy = point.y-sun.y;
			   /*
			   //根据三角函数求出弧度也是角度
			   ball.x=centerX+Math.cos(angle)*radius;
			   ball.y=centerY+Math.sin(angle)*radius
			   angle = Math.atan2(dy,dx);
 			   upfang(angle);
			}
          
		}
		/*
		* 更变人物动画行走方向
		*/
		private function upfang(d:Number):void{

		  if(d>=-0.524&&d<=0.524)
		   {
			    sDirection = 2;
		   }
           if(d>=0.524&&d<=1.05)
		   {
			    sDirection = 5;
		   }		   
           if(d>=1.05&&d<=2.1)
		   {
			    sDirection = 0;
		   }		
		   
           if(d>=2.1&&d<=2.62)
		   {
			    sDirection = 4;
		   }
           if(d>=2.62||d<=-2.62)
		   {
			    sDirection = 1;
		   }		   
           if(d>=-2.62&&d<=-2.09)
		   {
			    sDirection = 6;
		   }		
		   
		   if(d>=-2.09&&d<=-1.05)
		   {
			    sDirection = 3;
		   }		   
           if(d>=-1.05&&d<=-0.524)
		   {
			    sDirection = 7;
		   } 			   
		}
		/*
		记录鼠标位置
		*/
		public function Mousedown(e:Event):void{
			var p:Point=new Point();
			p.x=stage.mouseX;
			p.y=stage.mouseY;
			plist.push(p);
			if(plist.length>5)
			{
                plist.pop();
				plist.pop();
				plist.push(p);				
             }		    
			  
		}
	}
}

素材

到这里下载吧

http://code.google.com/p/queryphp/downloads/detail?name=yundemo.zip&can=2&q=