Posted By
MMS
on 2023-07-12
17:46:40
 |  Re: Flickering PETSCII software sprites
Some time ago I though about the animation possibilities on the Plus/4.
I wanted to make a rotating car from Need For Speed III.
The idea is to use the full charset in multicolor mode, and the chars more or less simulating the multicolor mode, with 2 fixed colors and one free color per attribute. The size could be 20x12 or 12x20 to fit into the 256 characters. the color memory map takes only 480 bytes.
One frame of the animation is one charset. You load the charsets and the color maps of the frames into the memory, at every 2000bytes. Changing the picture is simply to change the charset address and copy the color map (or even better: just change it's address too), writing few bytes into registers. When it happens at the border, you may have flicker free smooth animation, as the change of few bytes takes no time.
(maybe it does not work at all, but I think I saw some 2-3 colored 3D animations/quickly morphing object in demos supposely using the same method)
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