侦听键盘和鼠标

 

package  

{

import flash.display.Stage;

import flash.events.KeyboardEvent;

import flash.ui.Keyboard;

import flash.events.MouseEvent;

/**

* 处理玩家输入类---侦听键盘和鼠标

*/

public class UserInputHandler

{

public static var keyRight:Boolean;

public static var keyLeft:Boolean;

public static var keyForward:Boolean;

public static var keyBackward:Boolean;

public static var mouseDown:Boolean;

public function UserInputHandler(stage:Stage) 

{

//侦听玩家键盘和鼠标事件

stage.addEventListener(KeyboardEvent.KEY_DOWN, keyDownHandler);

stage.addEventListener(KeyboardEvent.KEY_UP, keyUpHandler);

stage.addEventListener(MouseEvent.MOUSE_DOWN, mouseDownHandler);

stage.addEventListener(MouseEvent.MOUSE_UP,mouseUpHandler);

}

private function keyDownHandler(e:KeyboardEvent):void

{

switch(e.keyCode)

{

case "W".charCodeAt():

case Keyboard.UP:

UserInputHandler.keyForward  = true;

UserInputHandler.keyBackward = false;

break;

case "S".charCodeAt():

case Keyboard.DOWN:

UserInputHandler.keyBackward = true;

UserInputHandler.keyForward  = false;

break;

case "A".charCodeAt():

case Keyboard.LEFT:

UserInputHandler.keyLeft = true;

UserInputHandler.keyRight    = false;

break;

case "D".charCodeAt():

case Keyboard.RIGHT:

UserInputHandler.keyRight = true;

UserInputHandler.keyLeft = false;

break;

}

}

private function keyUpHandler(e:KeyboardEvent):void

{

switch(e.keyCode)

{

case "W".charCodeAt():

case Keyboard.UP:

UserInputHandler.keyForward = false;

break;

case "S".charCodeAt():

case Keyboard.DOWN:

UserInputHandler.keyBackward = false;

break;

case "A".charCodeAt():

case Keyboard.LEFT:

UserInputHandler.keyLeft     = false;

break;

case "D".charCodeAt():

case Keyboard.RIGHT:

UserInputHandler.keyRight = false;

break;

}

}

private function mouseDownHandler(e:MouseEvent):void

{

mouseDown = true;

}

private function mouseUpHandler(e:MouseEvent):void

{

mouseDown = false;

}

}

 

}