Forums » Bugs

Collision detection breakage

Nov 25, 2004 Soltis link
This is confirmed by both myself and Solra.

When a shot is fired at a roid(and possibly other objects), it 'impacts' the object about a ship-length under that object's surface; with the plasdevs, I can just see the little pointy bits of the explosion sticking out of the surface of the roid when I fire at it.

This behavior is very consistant, in that it both always happens and always does the same thing.

When I fly my ship into the roid, it stops where it should.

I'm using Slackware 10.
Athlon XP 2500
1024 MB RAM
Geforce FX 5900

If I knew a decent, hassle-free host, I could link to screenshots.
Nov 25, 2004 roguelazer link
That's because the collision mesh is constant, but the visual mesh is affected by LOD. So if your detail is 20/20, the collision mesh and the visual mesh should line up. But if your detail is less, then they won't line up because the roids will have a different mesh. Yeah. That was longer than it needed to be.
Nov 25, 2004 Soltis link
I had ALL visual and GFX settings set to max at the time.
Nov 25, 2004 roguelazer link
Then perhaps the meshes are the same at the min LOD. I forget...
Nov 26, 2004 raybondo link
The meshes are closer to the min LOD settings.
Nov 26, 2004 Soltis link
So if I set my visual settings to min, projectiles would actually 'hit' where they are supposed to?

Something strikes me as vaguely broken about that.

Would this also explain why I have seen projectiles going THROUGH bots when I fire at them?
Nov 27, 2004 raybondo link
The difference between the visual mesh and collision mesh isn't very much and under normal circumstances it's not important at all.

The collision meshes for bots do not have significant differences to the visual mesh so projectiles going through bots is not caused by this. The only thing I can think that would cause that is lag.
Nov 27, 2004 Soltis link
Hard to tell, I don't *think* I was lagging when it's happened.

Is there any way I can test this?
Nov 27, 2004 Solra Bizna link
Fire at a bot and arrange to have your network connection drop immediately afterward. ;) Though it only happens with missiles and rockets, AFAIK.
-:sigma.SB
Nov 27, 2004 Soltis link
I'm talking about energy weapons here.