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Listening to navigation keys

/ Published in: ActionScript 3
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Listen to the Navigation keys and save their values in local Booleans

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  1. private var goRight:Boolean = false;
  2. private var goLeft:Boolean = false;
  3. private var goDown:Boolean = false;
  4. private var goUp:Boolean = false;
  5.  
  6.  
  7. public function Main() 
  8. {
  9. 	stage.addEventListener(KeyboardEvent.KEY_DOWN, keyHandler);
  10. 	stage.addEventListener(KeyboardEvent.KEY_UP, upHandler);
  11. }
  12.  
  13. private function keyHandler(e:KeyboardEvent):void 
  14. {
  15. 	switch (e.keyCode) 
  16. 	{
  17. 		case Keyboard.UP:
  18. 			goUp = true;
  19. 		break;
  20.  
  21. 		case Keyboard.DOWN:
  22. 			goDown = true;
  23. 		break;
  24.  
  25. 		case Keyboard.LEFT:
  26. 			goLeft = true;
  27. 		break;
  28.  
  29. 		case Keyboard.RIGHT:
  30. 			goRight = true;
  31. 		break;	
  32.  
  33. 		default:
  34. 			trace(e.keyCode);
  35. 		break;
  36. 	}
  37. }
  38.  
  39.  
  40. private function upHandler(e:KeyboardEvent):void 
  41. {
  42. 	switch (e.keyCode) 
  43. 	{
  44. 		case Keyboard.UP:
  45. 			goUp = false;
  46. 		break;
  47.  
  48. 		case Keyboard.DOWN:
  49. 			goDown = false;
  50. 		break;
  51.  
  52. 		case Keyboard.LEFT:
  53. 			goLeft = false;
  54. 		break;
  55.  
  56. 		case Keyboard.RIGHT:
  57. 			goRight = false;
  58. 		break;	
  59.  
  60. 		default:
  61. 			trace(e.keyCode);
  62. 		break;
  63. }

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