AddBodyForce not working

[Laurens]

Hello,

 

I have continued experimenting with my input handling but now have trouble getting physics to work. My ball (Pong) is initialized like so:

 

Ball::Ball()
{
ball = LoadModel("abstract::ball.gmf");
EntityType(ball, 1);
SetBodyMass(ball, 1.0f);
}

 

After the ball is initialized, Collisions(1, 1, 1) is called.

 

This is the Update method of the ball class:

 

void Ball::Update()
{
AddBodyForce(ball, Vec3(1.0f, 0.0f, 0.0f));
}

 

Setting a breakpoint confirmed it is getting called, yet the ball won't move a bit. If I call DebugPhysics(1) it does show a proper collision hull yet the hull remains red. Anyone know what I am missing here?

[Niosop]

Did you create a .phy file for it or did you let it autocreate one? The one it autocreates from the mesh is a static body, I don't think you can move it.

[Marleys Ghost]

normally issues I have like that have been .phy file related Laurens.

[Laurens]

I had it auto-create one, it's working now. Thanks a bunch

 

Good to know you can't use those though.

 

/me slaps himself in the face.

[Laurens]

I implemented a CollisionCallback in order to detect a ball hitting the paddle. I need to figure out what direction it was moving in before it hit the paddle. I suppose I can do so using the normal the callback function provides. What mathgic would I need to pull off in order to do so?

 

I also suppose I need to get the math books out again, lol

[DaDonik]

The normal vector is the direction of the impact an thus also the direction of movement before the impact.

Or did i get you wrong?

[Laurens]

You are right. I'll stop asking silly questions now

 

Thanks!

[DaDonik]

Just ask, no one here bites AFAIK

[Niosop]

Plus having the answers to those questions here helps those who have the same questions and bother to search.