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Set mouse cursor position

by anycast · in Torque Game Builder · 01/07/2009 (9:16 am) · 5 replies

Hi all,

I'm trying to restrict mouse movement while dragging. I can capture the mouse position with the onMouseDragged callback, but I'm not finding any way to set the mouse cursor position (to make it stick within bounds). How do I accomplish this?


Thanks in advance!

Alex
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Torque Owner Ecliptic
#1
01/10/2009 (1:55 pm)
I am having the same problem. When I begin dragging and the mouse leaves the bounds of the object that is selected, the object then stops as if the mouse is no longer dragging it. Is there a way to lock the mouse or restrict it to the objects bounds?

Thanks as well!
Dane

Torque Owner Ashley Gelderblom
#2
10/23/2009 (5:05 am)
I am having the same issue, mouse doesn't adhere to the world limits of the sprite you have clicked and are dragging?

Torque Owner Nikos Beck
#3
10/27/2009 (8:39 pm)
It's not possible within TGB. You would need to restict the mouse using the OS... which I don't think is even possible. It would be hard to justify why the OS would restrict the mouse pointer to a particular portion of the screen.

Nate Gertsch
#4
10/28/2009 (4:37 pm)
Quote: It's not possible within TGB. You would need to restict the mouse using the OS... which I don't think is even possible. It would be hard to justify why the OS would restrict the mouse pointer to a particular portion of the screen.

Not exactly true.

While I don't know of any way to lock the mouse within a given area, it is possible to reset the position of the mouse within TGB using sceneWindow2D.setMousePosition(%positionHere) so if you're willing to spend some time you could check to see if the current position is valid and if it isn't, move the mouse back to a valid position. I've read the question in the post above yours a few times but I'm still not exactly sure what he is trying to do so I can't offer any more specific help.

Torque Owner RollerJesus
Dream. Build. Repeat.
#5
10/28/2009 (6:22 pm)
I'm not sure if this will work as is - or if you'll be able to adapt it - but I had it laying around so I thought I'd share. Perhaps you could set your draggable object's superclass as mouseCatcher and toggle it in the onMouseDown callback or something.
function mouseCatcher::onLevelLoaded(%this, %scenegraph)
{
   %this.enableUpdateCallback();  
   
   %this.xMin = %this.getPositionX() - (%this.getWidth() / 2);
   %this.xMax = %this.getPositionX() + (%this.getWidth() / 2);
   %this.yMin = %this.getPositionY() - (%this.getHeight() / 2);
   %this.yMax = %this.getPositionY() + (%this.getHeight() / 2);
}

function mouseCatcher::onUpdate(%this)
{
   if(getWord(sceneWindow2d.getMousePosition(),0) < %this.xMin)
   {
      sceneWindow2d.setMousePosition(%this.xMin,getWord(sceneWindow2d.getMousePosition(),1));
   }
   else if(getWord(sceneWindow2d.getMousePosition(),0) > %this.xMax)
   {
      sceneWindow2d.setMousePosition(%this.xMax,getWord(sceneWindow2d.getMousePosition(),1));
   }
   else if(getWord(sceneWindow2d.getMousePosition(),1) < %this.yMin)
   {
      sceneWindow2d.setMousePosition(getWord(sceneWindow2d.getMousePosition(),0),%this.yMin);
   }
   else if(getWord(sceneWindow2d.getMousePosition(),1) > %this.yMax)
   {
      sceneWindow2d.setMousePosition(getWord(sceneWindow2d.getMousePosition(),0),%this.yMax);
   }
}

Hope it helps!