why after i created bones in med, vertex animation doesn't work anymore?
i just followed the manual's bones creation chapter and tested in the workshop23.
the bone rotate worked fine .... but vertex animation didn"t work.
after i remove all bons which i'd made in wed, the vertex animation worked fine...

you can't mix bones and vertex animation

thanks.....but my frames are totally vertex animation . i'm working on a TPS project i just wanna use bone to rotate my soilder's a part of body a bit(for example the soilder look up and down, the camera's tilt change ).....
could you give me a alternative?? thanks in advance!

I you want to do that you need to remake all the animations using bones

OR you can break your mdl into two parts, upper body and lowerbody and attach it together by code however, this strongly depends on the model

Yup, this is actually the thing I hate from the engine, even adding a simple bone will void all vertex animation.
Changing to bone animation is not just cumbersome, it also will cause slowdown if large number of bone-animated-models appears on screen.
You can use darkinferno's suggestion, by breaking the model to upper-lower body.

Or, you can manually divide the animation and use ANM_ADD.
1. Create a series of pose/animation for your soldier looking/aiming up to looking/aiming down(eg: looking 60° up, looking 30° up, looking straight, looking -30° down and -60° down) for the upper body and remove the lower body animation(of the same model)
2. Create another animation for walking/running/standing with unanimated upper body.
3. Animate the entity by adding the lower animation for walking/running and the upper animation for 'rotating' the upper part.

I used this technique a long-long time ago but not on 3DGS(in 3D engine I wrote in DOS ), so I'm not sure it will work here.. It will also get trickier f you want to rotate the upper body horizontally...

thanks!