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Detect direction mouse is moving

/ Published in: ActionScript 3
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Simple script to determine what direction the mouse is moving.

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  1. function Start() {
  2.  
  3. 	stage.addEventListener(MouseEvent.MOUSE_MOVE, CheckDirection);
  4.  
  5. }
  6. Start();
  7.  
  8. var prevX=0;
  9. var prevY=0;
  10. var curX=0;
  11. var curY=0;
  12.  
  13.  
  14. var dirX:String="";
  15. var dirY:String="";
  16.  
  17. function CheckDirection(e:MouseEvent) {
  18.  
  19.  
  20. 	trace("X movement: " + GetHorizontalDirection() + ", Y movement: " + GetVerticalDirection());
  21.  
  22. 	e.updateAfterEvent();
  23.  
  24. }
  25.  
  26. function GetHorizontalDirection():String {
  27.  
  28. 	prevX=curX;
  29. 	curX=stage.mouseX;
  30.  
  31. 	if (prevX>curX) {
  32.  
  33. 		dirX="left";
  34.  
  35. 	} else if (prevX < curX) {
  36.  
  37. 		dirX="right";
  38.  
  39. 	} else {
  40.  
  41. 		dirX="none";
  42.  
  43. 	}
  44.  
  45. 	return dirX;
  46.  
  47. }
  48.  
  49. function GetVerticalDirection():String {
  50.  
  51. 	prevY=curY;
  52. 	curY=stage.mouseY;
  53.  
  54. 	if (prevY>curY) {
  55.  
  56. 		dirY="up";
  57.  
  58. 	} else if (prevY < curY) {
  59.  
  60. 		dirY="down";
  61.  
  62. 	} else {
  63.  
  64. 		dirY="none";
  65.  
  66. 	}
  67.  
  68. 	return dirY;
  69.  
  70. }

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