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1 user currently in Super Mario World hacking:  labmaster |
| Acmlm's Board - I2 Archive - Super Mario World hacking - SNES programming question. |
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blackhole89 LOLSEALS Moderator of ROM hacking EmuNET IRC network admin Head GM of TwilightRO Level: 47  Posts: 12/971 EXP: 739208 For next: 26995 Since: 03-15-04 From: Dresden/Germany Since last post: 14 hours Last activity: 12 hours |
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| Hello out there. I'm trying to make a level which's mostly darkened, but has some lighter spots (around lamps). Doing this with a layer two on top and colour subtraction. Only problem: While the subtraction works fine, the screen content's being inverted. When Layer 2 is in the back, anything works fine. Anyone knows what to do against? GreetZ Blacky. |
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Janus Goomba Level: 11 Posts: 17/34 EXP: 4833 For next: 1152 Since: 03-18-04 Since last post: 585 days Last activity: 339 days |
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| how're you doing colour subtraction? is it a new feature of LM? I've not gotten around to messing with the newest version yet. | |||
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blackhole89 LOLSEALS Moderator of ROM hacking EmuNET IRC network admin Head GM of TwilightRO Level: 47 Posts: 13/971 EXP: 739208 For next: 26995 Since: 03-15-04 From: Dresden/Germany Since last post: 14 hours Last activity: 12 hours |
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| No. LM - any version - won't be able to make the SMW Engine things it can't. I assemblered it, of course. So that's what I figured out so far: The strange misbehaviour has something to do with subscreens, a really s... tty element of SNES programming. CGADSUB doesn't work for these as it should. GreetZ Blacky. |
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BMF98567 BLACK HAS BUILT A SILLY DICE-MAZE! GO! Current list of BURNING FURY >8( recipients: - Yiffy Kitten (x2) - Xkeeper Level: 53  Posts: 33/1261 EXP: 1094149 For next: 62970 Since: 03-15-04 From: Blobaria Special Move: Rising Meatloaf Backhand Combo Since last post: 21 hours Last activity: 1 hour |
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| You mean the colors are turning negative? I had that same problem, though I don't remember exactly what I did to fix it. I think I fiddled around with the CGADSUB flags a bit; they're kinda tricky. You might also try using an ordinary screen mode, in case you're using one of the two transparent ones (your CGADSUB settings will still work). This is the ASM I used to change CGADSUB for my spotlight hack: LDA #$A1 STA $40 |
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blackhole89 LOLSEALS Moderator of ROM hacking EmuNET IRC network admin Head GM of TwilightRO Level: 47 Posts: 14/971 EXP: 739208 For next: 26995 Since: 03-15-04 From: Dresden/Germany Since last post: 14 hours Last activity: 12 hours |
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| But what I want is no layer 3 spotlight but rather an L2 lighting which is bound to the level itself and affects sprites too. Just like a dark dungeon with some few light spots. What I'm currently asking is: (a) Is there any way to invert the screen content or (b) Is there any easy way to change the Sprite Layer and the position of layers to each other in ASM? One of the two will do. And, ah yes, I just understood SMW's SPC loading routine. I even found it. Free to change the noisy stuff. EDIT - Now I know what my problem is. It has something to do with TD & TSW (Subscreen selection) and TM & TMW (Mainscreen selection). With CGADSUB addition it doesn't matter, but with subtraction it's always (TM&TMW final colour) - (TD&TSW final colour). Mode 1F (which I used) has TD&TSW=15h=00010101L=Sprites+BG3+BG1, and TD&TSW=02h=00000010L=BG2, that means, Sprites+BG3+BG1 are being subtracted from BG2, thus making them negative = inverting them. I have to find a working mode with TD&TSW=02h and TM&TMW=15h, but the rest like 1F. Dammit. GreetZ Blacky. (edited by blackhole89 on 03-19-04 10:02 AM) |
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BMF98567 BLACK HAS BUILT A SILLY DICE-MAZE! GO! Current list of BURNING FURY >8( recipients: - Yiffy Kitten (x2) - Xkeeper Level: 53 Posts: 40/1261 EXP: 1094149 For next: 62970 Since: 03-15-04 From: Blobaria Special Move: Rising Meatloaf Backhand Combo Since last post: 21 hours Last activity: 1 hour |
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| You could always try changing TM/TMW and TD/TSW on the fly by writing to those registers...I dunno if it'll work, but it's worth a shot. | |||
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blackhole89 LOLSEALS Moderator of ROM hacking EmuNET IRC network admin Head GM of TwilightRO Level: 47 Posts: 18/971 EXP: 739208 For next: 26995 Since: 03-15-04 From: Dresden/Germany Since last post: 14 hours Last activity: 12 hours |
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| Did it... well, it works, but in a strange way... applied to mode 1F, some of the sprites are affected. As follows: * Mario: not affected. * Goombas: not affected. * Spring-board(portable~): affected. * Koopas: affected. * Koopas without shell: not affected. * Paratroopas: The koopas are affected, but their wings aren't. Kinda weirdo in darker regions, where the wings glow like lamps. Seems even somehow epic  and so on... Also try out this one: TM&TMW=15h TD&TSW=12h Whereever there's colour #0 (transparent) on L2, the sprites noted as affected above will appear as black silhouettes. Now if that isn't useful  screenshot follows: GreetZ Blacky. |
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BMF98567 BLACK HAS BUILT A SILLY DICE-MAZE! GO! Current list of BURNING FURY >8( recipients: - Yiffy Kitten (x2) - Xkeeper Level: 53 Posts: 45/1261 EXP: 1094149 For next: 62970 Since: 03-15-04 From: Blobaria Special Move: Rising Meatloaf Backhand Combo Since last post: 21 hours Last activity: 1 hour |
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Wow, neat effect!  Whether or not a sprite is affected by color addition/subtraction changes depends on its palette number (this is noticeable in ghost houses with transparent green bubbles). AFAIK, the first 4 palettes aren't affected, while the last 4 are. Pretty lame if you ask me... |
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blackhole89 LOLSEALS Moderator of ROM hacking EmuNET IRC network admin Head GM of TwilightRO Level: 47 Posts: 21/971 EXP: 739208 For next: 26995 Since: 03-15-04 From: Dresden/Germany Since last post: 14 hours Last activity: 12 hours |
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| The weird thing about this is that all sprites are affected while on main screen (but, on subtraction, inverted), while on subscreens only the above-mentioned are. EDIT - Ah yes, the effect is just that the sprites are being subtracted out of themselves. GreetZ Blacky. (edited by blackhole89 on 03-20-04 04:59 AM) |
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HyperLamer <||bass> and this was the soloution i thought of that was guarinteed to piss off the greatest amount of people Sesshomaru Tamaranian Level: 118 Posts: 125/8210 EXP: 18171887 For next: 211027 Since: 03-15-04 From: Canada, w00t! LOL FAD Since last post: 2 hours Last activity: 2 hours |
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I also seem to be having a problem: when subtraction is enabled, the BG colour turns black no matter what I do.  Any ideas? |
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Atma X Bandit Level: 43  Posts: 29/801 EXP: 553639 For next: 11407 Since: 03-16-04 From: Derrière vous!!! Since last post: 43 days Last activity: 14 days |
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| I know this has nothing to do with what your currently focused on, but I was wondering how I open a Rom in "RAM Address" ($897B, stuff that looks like that I think). What program would I use? (edited by Atma X on 03-20-04 07:19 PM) (edited by Atma X on 03-20-04 07:22 PM) |
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