gbadev : Message: sprites dissapearing

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Are tiles larger than 8x8 possible?

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Message #13705 of 15019 |

sprites dissapearing

Hi

I have started to display around 70 sprites on screen at once, most of
them are size 16x16. If I display more than 70 odd, sprites start to
disappear randomly. Any idea why this may happen? I thought maybe I
am filling up the OAM memory or something? Please help and its
stopping me from progressing with my game!! :-(

I am in mode 3 by the way.

Thanks

Derek

Tue Feb 4, 2003 10:47 am

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"Derek Payne" <derekmpayne@...>

dmpauctions

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Message #13705 of 15019 |

Expand Messages	Author	Sort by Date
Looking at puyo puyo, they use 11x11 tiles for their puzzle pieces once they have been placed on the game grid. I'm curious how they do this. I was thinking...	Wendy <gadget2032@...> nekowendy	Feb 3, 2003 11:51 pm
... using sprites I guess... The GBA can display 128 sprites, so you can do a lot with sprites. Load the ROM in an emulator which enables you to switch BG...	Jan-Lieuwe Koopmans jan-lieuwe@...	Feb 4, 2003 12:41 am
Hey Wendy, Funny you should ask I just finished a little demo using the exact same trick puyo pop uses: http://baback.dreamhost.com/sodapop.zip Its pretty...	belmieh <baback.elmie... belmieh	Feb 4, 2003 12:43 am
alternatively you can multiplex sprites down the screen. use as many sprites as you have blocks across the playing area (in our case 6) * 2 and then while its...	ninge n1nge	Feb 4, 2003 9:48 am
... Not exactly. Sega's Puyo Pop uses 12x12 pixel tiles on a 6x12 playfield. ... There are four ways to do tile sizes other than multiples of 8x8 pixels....	Damian Yerrick <d_yer... yerricde	Feb 4, 2003 9:48 am
Hi I have started to display around 70 sprites on screen at once, most of them are size 16x16. If I display more than 70 odd, sprites start to disappear...	Derek Payne dmpauctions	Feb 4, 2003 10:48 am
... Are the sprites disappearing completely, or just parts of them? At a guess, with the information supplied, I would say that you're exceeding the display...	Francis Lillie francis_lillie@...	Feb 4, 2003 12:03 pm
also if bit 5 is set in REG_DISTCNT (0x04000000) you get even less [i think thats the right way if I remember right the cowbite spec is wrong, that bit allows...	Mike Wynn mike.wynn@...	Feb 4, 2003 1:00 pm
... There is only enough sprite graphics memory to display 64 16x16 256-color sprites in mode 3 if you have seperate graphics for each sprite. If you are using...	jason rogers jason_lee_ro...	Feb 5, 2003 8:34 am

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