I am not using script functions to create piledriver.Well, I'm not sure what you're doing there. A follow animation with single attackbox doesn't explain what kind of grab/slam/throw it's supposed to perform
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So my first question is this: are you using script functions to create piledriver?
There's your first problem. You're using a hack trick with attack boxes from over 10 years ago. Stop that. It's not even remotely stable and will cause you far, far more trouble than learning the grappling scripts. Use @Bloodbane's or @Pierwolf's modules as an example.I am not using script functions to create piledriver.
Not being an expert I am looking at other games with the piledriver of Haggar that is follow animation in these games.Why no offset? What are you trying to do without scripts? I think you can use jumpframe on both the player and enemy to be in the same rhythm, meaning both of them will act to jump at the same time together if you want to make a straight jump pile driver. You can use grabup animation and throwframewait. However, like Bloodbane said about that follow animation, I don't understand what your real intention is, since you are using that follow animation.