Physics : onCollisionEnter

[YouGroove]

A simple physic function available on other 3D engines, and super usefull very missing in Leadwerks 3.

 

Actually in LE3 you make some fake collision detection using distance, can be good for some situations and game styles, but for lot of stuff real trigger when entering collision and having the name of object colliding (or list), would bring LE3 to a new level in terms of gameplay programming.

 

Suggestion for future 3.1 perhaps.

[AggrorJorn]

The tutorials have this script but it is not part of the api. You have access to OnCollide and OnExit

[Rick]

Where is the OnExit function script? I'll have to start looking at how to do this globally.

[AggrorJorn]

My bad, I meant the tutorials for 3.1. I will have to ask if I can share it though.

[Rick]

OK cool. Yeah, OnExit is really the biggest thing since we can just use a bool in our script inside OnCollide for an OnEnter.

[AggrorJorn]

Here you go! It is designed for usage with the flowgraph editor, but it can be easily adjusted ofcourse, Thanks you to Josh for pre-sharing.

 

 

CollisionTrigger.zip

 

Script.entered = false
Script.exited = false
Script.hasCollision = false;
function Script:UpdatePhysics()
if self.entered then
 if self.hadCollision == false then
  if self.exited == false then
   self.exited = true
   self.component:CallOutputs("TriggerExit")
   self.entered = false
  end
 end
end
self.hadCollision = false
end
function Script:Collision(entity, position, normal, speed)
self.hadCollision = true

if self.entered == false then
 self.component:CallOutputs("TriggerEnter")
 self.entered = true
 self.exited = false
end
end

[Rick]

That works. I wish it was done automatically behind the LE scene for us (as it would be a little cleaner for us) but this works too. Thanks.

[YouGroove]

Does it works with real physic shape collision of the model or some approximative box model collsion ?

[Josh]

FYI, if you use the "trigger" collision mode, collisions will continually be sent even if the object is completely inside the other (and no surfaces are intersecting). This does not occur with normal collision.

[Rick]

Putting this code on the wiki, because it's gold really