as 3.0 判断具体按钮的按下状态
判断具体按钮的按下状态
import flash.geom.Point
var __pointOld:Point=new Point(mouseX,mouseY)//获取鼠标初始位置
this.addEventListener("enterFrame",enterHandler)//注册真循环事件
function enterHandler(e:Event){
var pointNew:Point=new Point(mouseX,mouseY)
var step:Number=Point.distance(pointNew,__pointOld)//求每真移动距离
trace(step*stage.frameRate)//得出每秒鼠标的移动象素
__pointOld=pointNew//新值换旧值
}
package
{
import flash.display.Stage;
import flash.events.KeyboardEvent;
public class PopKeys
{
static private var state: Array = new Array();
static public function initStage( stage: Stage ): void
{
stage.addEventListener( KeyboardEvent.KEY_DOWN, onKeyDown );
stage.addEventListener( KeyboardEvent.KEY_UP, onKeyUp );
}
static public function isDown( code: uint ): Boolean
{
return state[ code ] == true;
}
static private function onKeyDown( event: KeyboardEvent ): void
{
state[ event.keyCode ] = true;
}
static private function onKeyUp( event: KeyboardEvent ): void
{
state[ event.keyCode ] = false;
}
}
}
补充:flash教程,动画技术