How to Constrain To Mouse With An Offset Camera?

TouchTiltGames

Hey guys, I'm using TSB's ConstrainToMouse template found here: http://gshelper.com/?p=377 for picking up and dropping objects. It's awesome except that it doesnt work if my camera origin is elsewhere. (My scene is 30,000px wide) How can i adjust it so it will work if the camera origin is not at it's default?
I'm guessing I'd have to do something at the scene/instance level since you can only do camera/constraining at the scene level.

Any hint would be much appreciated!
cheers.

Braydon_SFX

I believe you need to change the Camera's origin if I understand the question correctly.
For my Game, Penguin Pounce, I needed to change the X position of my camera origin to 477.

scitunes

any place you have mouse.position.X or touch.position.X change it to "mouse.position.X + camera.origin.X" same thing for touch. Also same thing for y but of couse using camera.origin.y.

You'll need to unlock the instance to get at the camera settings

TouchTiltGames

Thanks Sci, Doesn't seem to be working for me. Wish I could upload the TSB template to you right here!

simo103

@TouchTiltGames ... see if this i what you are looking for:

http://www.funkymunkygames.com/promo/constraintomouse_bigscreen.gameproj.zip

Note: in the scene actor (bomb) I had to add camera.origin.X and Y twice (once in this rule: 'when touch is pressed grabbed to true' and the second in the constrain rules). I also added a camera control.
Also there were some invisible walls in there that blocked movement so I have removed them but you may want to wall in the outside of the scene so the bomb doesn't travel out of sight.

scitunes

could it be a parentheses problem?

so for example if the game.mouse.position.X is in an equation you will need to add the camera origin with parentheses:

(game.mouse.position.X+current.scene.camera.origin.X)

maybe that's the problem

TouchTiltGames

Here I've copied out the lines where there's a Mouse or Touch:

When mouse button is down
self.touchdistance > magnitude( self.Position.X - game.Mouse.Position.X + scene.Camera.Origin.X , self.Position.Y - game.Mouse.Position.Y + scene.Camera.Origin.Y )
change self.grabbed = true

When self.grabbed is True
self.motion.linear velocityX to: 20*( game.Mouse.Position.X + scene.Camera.Origin.X - self.Position.X )
self.motion.linear velocityY to: 20*( game.Mouse.Position.Y + scene.Camera.Origin.Y - self.Position.Y )

TouchTiltGames

@simo Yes I think that's it. I'll try this on mine but yeah it seems basically the same in that my scene is large, my camera is offset etc. Thanks guys!

TouchTiltGames

Annnnd it worked! Looks like it was the forgotten brackets there. Thanks so much guys!