Flash Game人物跳跃Base练习

由于效果简单。。就不用FLEX写代码了。。直接在Flash cs3幁上写了。。

1：舞台上新建一mc ，命名实例名为： person_mc ;
2：在代码幁上写上如下代码：

jumpCode
import flash.events.KeyboardEvent;

var gravity:uint = 3;
var startJump:int = -12;
var xSpeed:uint = 12;
var jumpSpeed:int;
var inJump:Boolean = false;


var top:int = stage.stageHeight - person_mc.height;
trace(top);

this.stage.addEventListener(KeyboardEvent.KEY_DOWN,onJumpStart);
function onJumpStart(e:KeyboardEvent):void{
    if(e.keyCode == 32){   //space key
        if(inJump == false){
            jumpSpeed = startJump;    
            person_mc.addEventListener(Event.ENTER_FRAME,onJumpping);
            inJump = true;
        }
    }
    trace(e.keyCode);
    if(e.keyCode == 39){  //right key
        person_mc.x += xSpeed;
    }else if(e.keyCode == 37){  //left key
        person_mc.x -= xSpeed;
    }
    
}

function onJumpping(e:Event):void{
    person_mc.y += jumpSpeed;
    jumpSpeed += gravity;
    
    
    if(person_mc.y >= top){
        person_mc.removeEventListener(Event.ENTER_FRAME,onJumpping);
        person_mc.y = top;
        inJump = false;
    }
}