Bones
Hi,
don't think of bone-animation as a MD2 like keyframe animation, only. That is used very often since modelling with bones is easier, and interpolation keyframes is faster. However, the HalfLife game had a level, where you had to climb down a tube, and in the middle there was a one armed plant thingy, that could hear you and attack where there was a lud sound. You cannot do this with keyframe animation - it's bones, that are moved towards the sound position. All the child-bone's positions have to be calculatied according to their length and linkage to the moved bone. That's a very high CPU loading process. I bet DOOM3 uses a pre-calculated version for speed reasons, but I'm not sure.
-Gernot
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