Chain physics

[KTyJLXy]

Sup guys, long time no see.

I've just wanted to know, if there anyway to get chain physics for the model? For swinging things around on the end of that chain, you know, all that stuff. I can't think of any good method to do this.

Any tips?

[shadmar]

Ball joints

[KTyJLXy]

Can you be little more specific, please? How do i implement ball joint mechanic in the leadwerks?

(Sorry if that questions is kinda stupid...)

[Josh]

Here's an example:

http://www.leadwerks.com/werkspace/page/documentation/_/command-reference/joint/jointball-r732

 

A chain would just be several of these joints in a row.

[KTyJLXy]

Here's an example:

http://www.leadwerks.com/werkspace/page/documentation/_/command-reference/joint/jointball-r732

 

A chain would just be several of these joints in a row.

That helps, thanks a lot

[KTyJLXy]

So, i'm trying to make Joint:Ball script and so far i have joint script:

 

 

Script.parent = nil --entity
Script.child = nil --entity
Script.position = self.model:GetPosition --Vec3

function Script:Start()
App:Joint(self.position, self.child, self.parent)
end

 

And app function for creating joints:

 

 

 

function App:Joint(parent_position, child, parent)
joint = Joint:Ball(self.parent_position, self.child, self.parent)
end

 

All it does now - just crashes the game.

What i did wrong?

[Guppy]

based on the code you posted Im guessing that 'Script.position' is nil - it refers to "self.model" which isn't set in the code snippet you posted

 

also

 

function App:Joint(parent_position, child, parent)

joint = Joint:Ball(self.parent_position, self.child, self.parent)

end

 

 

Assuming that lua is like most other OOPs "self" is a pointer to the object instance meaning that self.child != child meaning that you call Join:Ball with (nil,nil,nil)

 

that seems likely to cause a crash even if self.model is defined