【百行代码说游戏】ActionScript3.0 小游戏 【劲舞团】源码+演示

最近学ActionScript3.0 以下为自己写的一个小游戏。尽量以最少的代码，实现功能

游戏原理：看代码注释

游戏规则：类似于【劲舞团】游戏，玩家可以按UP,DOWN,LEFT,RIGHT键来操控游戏。

打掉相应的箭头则得分，否则失手。

箭头落到底线没有被打掉，则为失手。

失手10次，游戏结束。

得分过30，升一级。难度加大。

先建一个箭头的类Baby.as 。提供四种不同造型的箭头

package  
{
	import flash.display.Sprite;
	import flash.filters.ConvolutionFilter;
	
	/**
	 * ...
	 * @author kkkloveyou
	 */
	public class Baby extends Sprite 
	{
		private var color:uint = 0xFFFFFF;
		private var direction:uint;
		private const LEFT:uint = 37;
		private const RIGHT:uint = 39;
		private const UP:uint = 38;
		private const DOWN:uint = 40;
		public  var flag:int = 0;
		
		public function Baby(direction:uint):void 
		{	
			this.direction = direction;
			switch (direction) {
				case LEFT:
				drawLeft();
				break;
				case RIGHT:
				drawRight();
				break;
				case UP:
				drawUp();
				break;
				case DOWN:
				drawDown();
				break;
				default:
				break;
				}
		}
		public  function drawRight():void {
				graphics.lineStyle(3,0xff0000);//左面
				graphics.moveTo(-60,-30);
				graphics.lineTo(-60,30);
				graphics.lineTo(30, 30);
				graphics.lineTo(30,40);
				graphics.lineTo(60, 0);
				graphics.lineTo(30,-40);
				graphics.lineTo(30, -30);
				graphics.lineTo( -60, -30);
				flag = 39;
		}
		public  function drawLeft():void {
				graphics.lineStyle(3,0x00ff00);//右面
				graphics.moveTo(60,-30);
				graphics.lineTo(60,30);
				graphics.lineTo(-30, 30);
				graphics.lineTo(-30,40);
				graphics.lineTo(-60, 0);
				graphics.lineTo(-30,-40);
				graphics.lineTo(-30, -30);
				graphics.lineTo(60, -30);
				flag = 37;
		}
		public  function drawUp():void {
				graphics.lineStyle(3,0x00ffff);//上面
				graphics.moveTo(-30,60);
				graphics.lineTo(30,60);
				graphics.lineTo(30, -30);
				graphics.lineTo(40,-30);
				graphics.lineTo(0, -60);
				graphics.lineTo(-40,-30);
				graphics.lineTo(-30, -30);
				graphics.lineTo( -30, 60);
				flag = 38;
		}		
		public  function drawDown():void {
				graphics.lineStyle(3,0x001177);//下面
				graphics.moveTo(-30,-60);
				graphics.lineTo(30,-60);
				graphics.lineTo(30, 30);
				graphics.lineTo(40,30);
				graphics.lineTo(0, 60);
				graphics.lineTo(-40,30);
				graphics.lineTo(-30, 30);
				graphics.lineTo( -30, -60);
				flag = 40;
		}
	}

}

再建一个控制类Main.as  用来控制游戏

package
{
    import flash.display.Sprite;
    import flash.events.Event;
    import flash.events.KeyboardEvent;
    import flash.text.TextField;
    import flash.text.TextFormat;
    import flash.ui.Keyboard;

	public class Main extends Sprite
	{
		public var arr:Array;//储存下落箭头的数组
		public var time:uint;
		public var errorTxt:TextField;//错误显示文本
		public var trueTxt:TextField;//正确显示文本
		public var levelTxt:TextField;//等级文本
		public var meTxt:TextField;//作者文本
		public var errorCount:int = 0;//错误总计变量
		public var trueCount:int = 0;//正确总计变量
		public var levelCount:int = 1;//当前关卡等级
		public var speed:uint = 5;    //箭头移动速度

		public function Main(){
			init();
		}

		public function init():void{
			this.addEventListener(Event.ENTER_FRAME,loopHandler);
			stage.addEventListener(KeyboardEvent.KEY_DOWN,downHandler);
			arr = new Array();
			time = 0;
			errorTxt = new TextField();
			trueTxt = new TextField();
			levelTxt = new TextField();
			meTxt = new TextField();
			errorTxt.text = "失手: "+errorCount;
			trueTxt.text = "得分: " + trueCount;
			levelTxt.text = "等级: " + levelCount;
			meTxt.text = "卫哥作品";
			levelTxt.x = 50;
			levelTxt.y = 50;
			errorTxt.x = 50;
			errorTxt.y = 150;
			trueTxt.x = 50;
			trueTxt.y = 250;
			meTxt.x = 700;
			meTxt.y = 550;

			this.addChild(errorTxt);
			this.addChild(trueTxt);
			this.addChild(levelTxt);
			this.addChild(meTxt);
		}

		public function downHandler(event:KeyboardEvent):void{
			errorCount++;
			if (errorCount >= 10) {
				stage.removeEventListener(KeyboardEvent.KEY_DOWN, downHandler);
				this.removeEventListener(Event.ENTER_FRAME,loopHandler);
			}
			for(var i:Number = arr.length-1;i>=0;i--){
				//判断键盘按下的键值是否和场景里的字母符合.如果符合则消去
				var baby:Baby = arr[i] as Baby;
				if ( baby ){
					if(baby.flag == event.keyCode){
						this.removeChild(arr[i]);
						arr.splice(i,1);
						trueCount++;
						errorCount--;        
						break;
					}
				}
			}
			if (trueCount >= 30) {
				levelCount++;			//级数升级，得手清零
				speed += 3;              //级数升级，速度增大,难度增大
				trueCount = 0;        
			}
			errorTxt.text = "失手: "+errorCount;
			trueTxt.text = "得分: " + trueCount;
			levelTxt.text = "等级: " + levelCount

		}

		public function loopHandler(event:Event):void{
			time++;
			if(time>=10){
				time = 0;
			    var baby:Baby = new Baby(int(Math.random() * 4) + 37);     //随机产生箭头类型
			    baby.x = stage.stageWidth / 2;
			    baby.y = 30;
				this.addChild(baby);
				arr.unshift(baby);
			}

			for(var i:Number = arr.length-1;i>=0;i--){
				arr[i].y+=speed;                                              //箭头速度
				if(arr[i].y>=stage.stageHeight){
					this.removeChild(arr[i]);
					arr.splice(i,1);
					errorCount++;
					errorTxt.text = "失手: "+errorCount;
					break;
				}
			}
			if (errorCount >= 10) {
				stage.removeEventListener(KeyboardEvent.KEY_DOWN, downHandler);
				this.removeEventListener(Event.ENTER_FRAME,loopHandler);
			}
		}
	}
}

项目演示地址：http://up.qqhello.com/qzone/73e11069e924b6d6df5198f9440a2403.swf