flex游戏引擎(PushButton)-控制输入(1)

InputManager可以完成一些简单的控制，但是当你要完成较复杂的控制时应使用InputMap，虽然InputManager使用较简单如下：

1.if(InputManager.isKeyDown(InputKey.UP))

2.   moveItemUp();

 

当你有第三方设备输入（比如手柄等），当你要控制键盘和鼠标，你可以采用一种一致的方式去处理它们，这种方式就是使用InputMap，提供一个回调函数，一个输入名称，一个数字参数， Digital inputs (buttons) will be called back with 0 or 1 based on if the button is up or down.用0和1表示键盘的 起来和按下，Analog inputs (mouse) will be called back with the change in position of the input.鼠标使用位置参数。

 

 

 

01.public class MyInputHandlingComponent extends TickedComponent

02.{

03.   public function get input():InputMap

04.   {

05.      return _inputMap;

06.   }

07.     

08.   public function set input(value:InputMap):void

09.   {

10.      _inputMap = value;

11.        

12.      if (_inputMap != null)

13.      {

14.         _inputMap.addBinding("GoLeft", _onLeft);

15.         _inputMap.addBinding("GoRight", onRight);

16.      }

17.   }

18.   public override function onTick(tickRate:Number):void

19.   {

20.      // Normally you would update your position based on this; for simplicity

21.      // we just print the direction we are being indicated to move.

22.      var direction:Number = right - left;

23.      Logger.print(this, "I am moving " + direction);

24.   }

25.     

26.   private function onLeft(value:Number):void

27.   {

28.      left = value;

29.   }

30.   private function onRight(value:Number):void

31.   {

32.      right = value;

33.   }

34.     

35.     

36.   private var _inputMap:InputMap;

37.   private var _left:Number = 0;

38.   private var _right:Number = 0;

39.}

level XML做为实体一部分被启动，注意：你定义输入做为level一部分，更易于支持多人在同一个输入设备游戏

01.<entity name="InputHandlingEntity">

02.   <component class="MyInputHandlingComponent" name="Input"/>

03.      <Input>

04.         <!-- These correspond to the calls to AddBinding above. -->

05.         <GoLeft>LEFT</GoLeft>

06.         <GoRight>RIGHT</GoRight>

07.      </Input>

08.   </component>

09.</entity>

鼠标绑定:

 

 

1.<entity name="MouseInputHandlingEntity">

2.   <component class="MyInputHandlingComponent" name="Input"/>

3.      <Input>

4.         <!-- These correspond to the calls to AddBinding above.  Only GoLeft needs to be bound because MOUSE_X gives negative as well as positive results. -->

5.         <GoLeft>MOUSE_X</GoLeft>

6.      </Input>

7.   </component>

8.</entity>