I know it should be simple and i have done it before however i think it was accidental.
im using GIMP 2 to create a sprite sheet. on it is a rocket and im creating 72 images of it, each image rotated 5 degrees more than the last. when i previously did it, it worked perfectly however the rocket was too small. if i up the rockets scale then when i preview the animation the rocket spins round like it should but it also slides across the preview screen.
Im also having this problem with animating an explosion. it plays the animation but it slides to the left aswell.
Develop games in your browser. Powerful, performant & highly capable.
Maybe you have to set the origin in the middle in the first frame, and the apply it to all frames of the animation ?