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[0.15.34] Low FPS tank animation

Posted: Tue Sep 26, 2017 8:19 pm
by darkfrei
Hi all!

I have found that animation of the car.tank is looks slow when it rotated "vertically".
low_fps.PNG
low_fps.PNG (105.61 KiB) Viewed 996 times
high_fps.PNG
high_fps.PNG (90.29 KiB) Viewed 996 times

Re: [0.15.34] Low FPS tank animation

Posted: Tue Sep 26, 2017 9:38 pm
by posila
Hi, this is normal behavior of all rotated animations in Factorio and I don't consider it a bug. But it is up to our artits to decide.

Explanation: In our projection, Y axis is foreshortened (and parallel with Z axis). When we render rotations with equal steps, more frames will be in "horizontal" direction than to "vertical" directions.
factorio-projection.png
factorio-projection.png (10.04 KiB) Viewed 979 times
EDIT: Actually, the problem might be, game logic behaves as if the game was top down (square tiles, character runs same speed up/down as left/right, ...), but graphics has tilted camera and this causes artifacts like this. I don't think we want to change how game logic behaves, nor to compensate for this discrepancy even more in art.