Search found 5 matches

by fjsantosb
Sat Feb 18, 2017 6:46 am
Forum: NESemdev
Topic: Background collision issue?
Replies: 8
Views: 2989

Re: Background collision issue?

Yep, I tested and It's seem all OK.

All other games (collision), tested seems to work properly (like Mario Bros).

Regards,
by fjsantosb
Sat Feb 18, 2017 5:29 am
Forum: NESemdev
Topic: Background collision issue?
Replies: 8
Views: 2989

Re: Background collision issue?

Hi all, I have another issue with the background collision. All seems to work great in games tested so far, but I found issues on 'Ice Climber' game; the player is falling on all the left edges of the level, as you can see in the attached picture (i add red circles on the places where player falls)....
by fjsantosb
Sun Jan 29, 2017 11:37 am
Forum: NESemdev
Topic: Background collision issue?
Replies: 8
Views: 2989

Re: Background collision issue?

By the way.

The trick was the buffered byte as mentioned by tokumaru; that it's seems a few more games works properly (like Pac-Man).

Thanks again,

Regards,
by fjsantosb
Sun Jan 29, 2017 9:11 am
Forum: NESemdev
Topic: Background collision issue?
Replies: 8
Views: 2989

Re: Background collision issue?

Hi,

Thanks for help to solve the problem; the issue was effectively on the VRAM read (I was reading cpu memory not ppu memory which is where the background tiles are). Now all it's seems to work properly (and mario doesn't fall continously).

Thanks so much for the help!

Regards,
by fjsantosb
Sun Jan 29, 2017 6:39 am
Forum: NESemdev
Topic: Background collision issue?
Replies: 8
Views: 2989

Background collision issue?

Hi all, I am working on a nes emulator from scratch (mainly for learning purposes) in javascript. I have build the cpu allready (it's seems to be Ok and have passed a few test for llegal opcodes); i have build the ppu too (almost 80%), and some games are fully playable right now (like Donkey Kong). ...