Impact

This forum is read only and just serves as an archive. If you have any questions, please post them on github.com/phoboslab/impact

4 years ago by AndrewMast

I am using the plugin from demo on this page.

Entities, collision, etc work fine. Except for the joints.

I run the following code and it produces an error.

Code: (Btw, the bodies aren't undefined. I've checked that.)
var jointDef = new Box2D.Dynamics.Joints.b2JointDef();
jointDef.bodyA = entity1.body;
jointDef.bodyB = entity2.body;
jointDef.collideConnected = false;

var joint = ig.world.CreateJoint(jointDef);

Error:
[Error] TypeError: null is not an object (evaluating 'c.m_prev=null') - CreateJoint - lib.js

The line of code (causing the error in lib.js):
...CreateJoint=function(a){var c=q.Create(a,null);c.m_prev=null;if(c.m_next=this.m_jointList)...

4 years ago by Joncom

Perhaps instead of:
var joint = new Box2D.Dynamics.Joints.b2JointDef();

you meant:
var jointDef = new Box2D.Dynamics.Joints.b2JointDef();

4 years ago by AndrewMast

Nope. I forgot to re-name that when putting it in the forum. (And I have tried renaming it in the code too)

4 years ago by Joncom

What line in "lib.js" is that error occurring on?

4 years ago by AndrewMast

(I added this when I made my other reply)

The line of code (causing the error in lib.js):
...CreateJoint=function(a){var c=q.Create(a,null);c.m_prev=null;if(c.m_next=this.m_jointList)...
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