How can I prevent two parts from colliding in a joint?

[Yue]

The question is clear, I have two pieces joined by a joint, but I need them not to collide, what happens is that when the ragdoll is launched, the character has death cramps, of epilepsy. 

[Slastraf]

Have you set your object collision type to debris ? It collides with scene and props, but not with itself.

Here you can find a quick example but you should try out Collision.Debris or find the index for it
https://www.leadwerks.com/learn?page=API-Reference_Object_Entity_SetCollisionType

[Josh]

Two entities that are connected with a joint will not collide with each other.

[Yue]

On 1/2/2022 at 6:12 AM, Josh said:

Two entities that are connected with a joint will not collide with each other.

Your comment is spot on.  What happens is that by moving the rigid bodies to the joints of the character, there is a clash between several pieces while creating the joints. 

In this case, setting the collision to debris type solves the problem. 

Another issue is that I have problems with the rotations of the bone reticulations and the rotation of the rigid body, for some reason it doesn't match.

Translated with www.DeepL.com/Translator (free version)

[Josh]

If you are creating a hinge joint, the starting orientation is an angle of zero. There is no correlation between the entity rotations and the joint angle.

[Yue]

Now I'm having this problem, my feet are stretching strangely.

 

[Josh]

Are you using SetMatrix()? You should probably just use SetPosition and SetRotation (using a quaternion) to avoid any problems with scaling.

[Yue]

6 hours ago, Josh said:

Are you using SetMatrix()? You should probably just use SetPosition and SetRotation (using a quaternion) to avoid any problems with scaling.

What I am doing is taking the bone of the foot and telling it to be son of the rigid body for the ragdoll effect of the foot. 

Then I have found solution to the problem, and that is that it is the respective rotation of the bone I have to set it to 0,0,0 locally. 

 

--Test Ragdoll.
	if Input:GetKeyHit(Key.R) and self.ragdoll == false then 
		self.ragdoll = true
		
		if self.ragdoll == true and self.player:GetPhysicsMode() ~=  Entity.RigidBodyPhysics then 
			if self.player:GetPhysicsMode() == Entity.CharacterPhysics then 
				self.player.meshPlayer:SetMass(0)
				self.player:SetPhysicsMode(Entity.RigidBodyPhysics)
				
				self.RPlayer:InitShapes()
				self.RPlayer:InitJoints()
				self.RPlayer:SetRotations(true)	
				self.RPlayer:SetPositions()
				
				self.RPlayer:SetParents()
				self.RPlayer:SetMass(10)
					
			end
		end 
	end

The above script is the prototype to activate the ragdoll effect, I am using the SetRotation and SetPosition.  

 

[Yue]

[Yue]

Fix here.

[Josh]

I would probably manually set the rotation and position of each bone, rather than changing the parent.  But whatever works.

[Yue]