TMR Posted October 14, 2014 Share Posted October 14, 2014 Has anyone ever fixed the scrolling glitch at the bottom of Action Biker's play area? Because i haven't properly tested it past collecting a couple of items as such, bu-ut... Action Biker (fixed).zip (i'll be stunned if nobody has done this before to be honest, because it is essentially just changing one byte in the display list... but if there isn't already a version out there it exists now. =-) 4 Quote Link to comment Share on other sites More sharing options...
Mclaneinc Posted October 15, 2014 Share Posted October 15, 2014 Cheers J... Quote Link to comment Share on other sites More sharing options...
+MrFish Posted October 16, 2014 Share Posted October 16, 2014 (edited) That game still has some wonky looking scrolling though, for anything that isn't exactly vertical or horizontal. Reminds me of Desert Falcon, though not quite as intense. Edited October 16, 2014 by MrFish Quote Link to comment Share on other sites More sharing options...
Heaven/TQA Posted October 16, 2014 Share Posted October 16, 2014 Can you fix the 160x scrolling to 320x scrolling? I think the jumping Scanline was the c64 code.... Quote Link to comment Share on other sites More sharing options...
TMR Posted October 16, 2014 Author Share Posted October 16, 2014 I think the jumping Scanline was the c64 code.... i'm not totally sure but don't think so, it uses LMS-powered scrolling rather than C64-style dumping of map data so that bit appears to have been completely rewritten for the A8 (which was a surprise, i'd have just yanked the original engine and removed the colour scroll personally). My money says it was the same coder on both and he was a C64 bunny so didn't know/have time to find out that the display list could mask off the bottom of the play area for him. Quote Link to comment Share on other sites More sharing options...
Heaven/TQA Posted October 16, 2014 Share Posted October 16, 2014 i'm not totally sure but don't think so, it uses LMS-powered scrolling rather than C64-style dumping of map data so that bit appears to have been completely rewritten for the A8 (which was a surprise, i'd have just yanked the original engine and removed the colour scroll personally). My money says it was the same coder on both and he was a C64 bunny so didn't know/have time to find out that the display list could mask off the bottom of the play area for him. That's what I ment.... I guess he was not familiar with how to setup display list properly... as on C64 you would setup a IRQ... and he could not setup DLI as it would move up, too. Quote Link to comment Share on other sites More sharing options...
TMR Posted October 16, 2014 Author Share Posted October 16, 2014 That's what I ment.... I guess he was not familiar with how to setup display list properly... as on C64 you would setup a IRQ... and he could not setup DLI as it would move up, too. i think he's masking it with hardware sprites on the C64, so not sure why he didn't just do that with players on the A8... but the easiest way to use a C64-style approach is to trigger a DLI on the character line above where the split is and just WSYNC down to the right scanline (which can easily be calculated from the current Y scroll position). =-) Quote Link to comment Share on other sites More sharing options...
José Pereira Posted October 16, 2014 Share Posted October 16, 2014 Nice it would be also some better if possible bike PMG, which PMGs is it using? Quote Link to comment Share on other sites More sharing options...
timdu Posted October 17, 2014 Share Posted October 17, 2014 I tried out the fixed version of Action Biker that was posted, and noticed this screen briefly appears when it first runs: 1 Quote Link to comment Share on other sites More sharing options...
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