The Houseguard

[Ishtvan]

You know, I just thought of something. Currently, the longsword spins on its point like a top when you throw it, in a most unrealistic (and rather silly) way. Is this because of the position of the origin, or because of its mass? If we're going to have all the weapons have their origin in the same point, isn't that going to cause them to react very strangely when thrown, dropped, etc?

No, center of mass is calculated by physics independent of the origin. It spins like a top because of unrealistic settings in mass, contact friction, and finally air friction. The last one will take a mod on our part, because Id didn't allow customized setting of the air friction on moveables, even though they did allow it to be set for projectiles and everything is there to just link it in from a spawnArg.

 

Good question. Is the centre of mass always equal to the origin in Doom 3?

No, but the kinematics physics doesn't care about the origin, it independently calculates the center of mass. So does our rotation code.

 

Some things that use approximations do use the origin though, which means the farther away it is from the center of mass, the more inaccurate those things will be. Frobbing uses the origin for a rough distance test, for example, if nothing is frobbed directly and more than one object is within the frob tolerance bounds. So the origin should be placed near the center of mass whenever possible.

[Springheel]

I've noticed something strange about the houseguard eyes since syncing up. It's like there are white textures floating a foot in front of the guard's head, turning as he turns.

[ascottk]

I've noticed something strange about the houseguard eyes since syncing up. It's like there are white textures floating a foot in front of the guard's head, turning as he turns.

He used the d3 approach of creating eye meshes. I fixed that but I haven't committed the changes yet. It'll be up soon.