SteveB Posted June 3, 2021 Share Posted June 3, 2021 Hi, from the Atari 800XL I know there is an interrupt for every scanline of the screen. Is there something similar on the TI? Perhaps there is already a ASM-Routine that can change the color of a sprite like in H.E.R.O for some selected sprites on a line-by-line basis? I think 4 of the 28 sprites in multi-color would be beneficial for many games and not too much overhead, considering this scanline-interrupt being extremely time-sensitive... Steve Quote Link to comment Share on other sites More sharing options...
ti99iuc Posted June 3, 2021 Share Posted June 3, 2021 I am not sure, but maybe this could be an example? Quote Link to comment Share on other sites More sharing options...
Asmusr Posted June 3, 2021 Share Posted June 3, 2021 6 minutes ago, SteveB said: Hi, from the Atari 800XL I know there is an interrupt for every scanline of the screen. Is there something similar on the TI? Perhaps there is already a ASM-Routine that can change the color of a sprite like in H.E.R.O for some selected sprites on a line-by-line basis? I think 4 of the 28 sprites in multi-color would be beneficial for many games and not too much overhead, considering this scanline-interrupt being extremely time-sensitive... Steve No there isn't. But you can stack multiple sprites, and if you offset them vertically it takes a little longer before you run into the 4 sprites per line limitation. One more option is to add an additional color using background patterns, like the ghosts' eyes in Ms. Pac-Man. 5 Quote Link to comment Share on other sites More sharing options...
+eebuckeye Posted June 3, 2021 Share Posted June 3, 2021 Was HERO available for download? Quote Link to comment Share on other sites More sharing options...
ti99iuc Posted June 3, 2021 Share Posted June 3, 2021 @eebuckeye this was the original thread. I never saw a download for it never finished I think. Quote Link to comment Share on other sites More sharing options...
+eebuckeye Posted June 3, 2021 Share Posted June 3, 2021 Bummer.. that is what I thought.. ? It looks so close! Quote Link to comment Share on other sites More sharing options...
PeteE Posted June 3, 2021 Share Posted June 3, 2021 Check out this multicolor sprite solution for the Turmoil clone on 99/4a. It only works for a solid background color though. 3 Quote Link to comment Share on other sites More sharing options...
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