Triangle Actor Collision Behavior

MaestroKaizers

Hi there, in my game i have a triangle shaped actor, but my actor is shaped and behaves as a square when colliding with other objects. Due to this, it does not look realistic when my actor collides with other objects, because it does not really collide with the actual picture (not well explained) :P

Is there any way i can make my character behave like a triangle when colliding with other objects??
Someone please help !
Thx

JohnPapiomitis

the only collision shapes gamesalad currently has is square's or circle's.

Youll have to make a triangle out of rectangle actors and have those act as the collisions

cheers

MaestroKaizers

Okay, thanks for responding
Is it possible to make serval rectangle actors and kind of merge these together as one actor?
If this is possible, how do i do it??

tutyses

i guess you could just constrain the rectangles to the triangle position

Clouds

Even if you do manage to constrain three rectangles together to make a triangle then this new composite object won't be able to bounce around the scene naturally as it won't be able to rotate as a single object. You could in theory do it, but the maths woud be mindboggingly complex.

tutyses

i meant to use the mini rectangles to do the colliding thing so i wont look like the other actors collide with nothing

Clouds

@tutyses

"i meant to use the mini rectangles to do the colliding thing so i wont look like the other actors collide with nothing"

The idea of building a composite collision shape is really only practicable for static objects or objects that do not rotate.

RThurman

Here is a example of the formulas involved in constraining moving/rotating actors:
http://www.mediafire.com/?fdwccdw7cl0pf30

You can also use the mouse to drag.

This is really only a partial solution though. Constraining actors x/y positions overrides GameSalad's physics engine. To really get it to work like you want, you would need to use these formulas but not with constrain behaviors.

RThurman

Clouds

Here's a test of a rotating triangle I did for someone last week, the arrow keys on your keyboard move the white ball.

http://www.mediafire.com/?gaa2846cz2j8agx

RThurman

@Tynan
Any thoughts on how to get the three sides to react to objects? As your demo shows, objects can collide with constrained actors. But constrained actors cannot collide and/or bounce off of other objects. (This is really the same question you had several days ago with your 'hammer' example, I believe.)

RThurman

Clouds

@RThurman

Yep, same question, not sure there is a workable answer to be honest.

RThurman

@Tynan
So far I would agree. There are some work arounds, but they are not for the faint of heart, and the results are not all that great. GameSalad really needs a joint system to do this well.