[GD-General] Pelvis transformation during animation

[pontus b. <her...@ho...>]

Hi,
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I have encountered an issue that has been a hassle for my current game proj=
ect as well as for previous ones and I'd like to hear your take on it.
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The issue surrounds transforming i.e. rotating and translating the pelvis j=
oint during animation. We are creating a fighting game where our artists wo=
uld like to be able to translate and rotate the entire character in a non-l=
inear fashion for some animation (say an attack where the character turns a=
round and moves forward).
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My first approach to this was to let the transformation be part of pelvis b=
ut this causes an issue due to hardware skinning since the world position a=
nd orientation in game logic won't incorporate that particular transformati=
on seeing as how it is added in the vertex shader.
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Next I tried to extract the transformations into separate rotations and tra=
nsformations for each key frame and just add the difference between key fra=
mes to world position and orientation. This solution was flawed because it =
also extracts the pelvis translation on the Y axis and adds that, making th=
e character float upwards. I guess I could keep working on this solution bu=
t it seems as a bad way to go, do you guys have a better idea or perhaps a =
standardized way to do this?
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Regards,
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Pontus Birgersson=20
Shortfuse entertainment
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