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Topic: Anyone Interested in Doing "SMB Special" for NES? (Read 5 times)
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frantik
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« Reply #120 on: March 11, 2008, 03:45:15 am » |
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it's the middle of the night, so I figure I might have time to get some more work done on the movement code integration before anyone is awake.
.... except i'm an insomniac freak lol jk take your time. glad to hear you've worked out some bugs in the renderer though, and fixed 4-2 up. :laugh: in 4-3 there is no enterable pipe but there is a vine which uses the same pipe codes.... |
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Karatorian
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« Reply #121 on: March 11, 2008, 07:53:59 am » |
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Ok, I posted the new version of the level renders. It's got all the bug fixes I mentioned above, the fixed 4-2, and full movement code support. The movement code now handles firebar intial positions and rotation direction. It also handles the previously unhandled 0xC1 code, which is up and down for Parakoopas and going forward in an up and down wave for Cheep Cheeps.
I also made a slight modification to the indicators for block contents. The Hudsonsoft Bee is now labled with a 'B' and the remaining unidentified powerup is labled with a 'U'.
I'll go mess around with 4-3 and see what happens.
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frantik
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« Reply #122 on: March 11, 2008, 06:15:31 pm » |
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Ok, I posted the new version of the level renders. It's got all the bug fixes I mentioned above, the fixed 4-2, and full movement code support. The movement code now handles firebar intial positions and rotation direction. It also handles the previously unhandled 0xC1 code, which is up and down for Parakoopas and going forward in an up and down wave for Cheep Cheeps.
I also made a slight modification to the indicators for block contents. The Hudsonsoft Bee is now labled with a 'B' and the remaining unidentified powerup is labled with a 'U'.
I'll go mess around with 4-3 and see what happens.
sweet :thumbsup: great work on 4-2 btw hey on the next render (if there is one) can you number the chunks? perhaps a number on the top row would work since therei's never any blocks on that row |
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Karatorian
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« Reply #123 on: March 12, 2008, 02:07:09 pm » |
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I actually thought about numbering the chunks, but I never got around to it. Seeing as you've requested it, I guess I should have, he he. Actually, I don't see there being another set of renders unless any more bugs come up. Other than not numbering the chunks, the rendering portion of my code is pretty much feature complete. I suppose I could make another set of renders just to fix that.
The only other changes I see making to my code are to improve the info file functions to output some more information. In particular, I had planned to output detailed sprite information. I may also clean up the code to the point where it could be released to the general public. (I don't know who'd really want it, but it seems a waste to have put all the effort in and not release it.)
I think the next item on my agenda will be to add the fixed version of 4-2 to the patch I made.
Keep up the good work.
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frantik
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« Reply #124 on: March 13, 2008, 01:56:06 am » |
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« Last Edit: March 13, 2008, 05:28:58 am by frantik »
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rbudrick
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« Reply #125 on: March 13, 2008, 09:38:47 am » |
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glad to hear the lift is back  hey Karatorian whats up with the random dark block in world 4-1 above the hidden 1up? also: does anybody know if lakitu comes back if you go up the vine and return to the level? perhaps the dark block is the lakitu continuation code or something? and is that really a trap bonus room in 4-3? there's pipe connection data but no enterable pipe. the pipe connection data is also weird pointing to chunk 5 which has no exit pipe I believe the trap room is the one I mentioned in the DP thread. By the way, was the "feature" in 4-3 added where you are forced to drop the elevator before the platform appears? -Rob |
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frantik
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« Reply #126 on: March 13, 2008, 11:42:47 am » |
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By the way, was the "feature" in 4-3 added where you are forced to drop the elevator before the platform appears? i'm still not convinced it's intentional and/or appears in a proper copy of the game... but regardless i haven't been spending much time on asm hacking yet and that is definitely something which is an extreme low priority i was reviewing 4-3 again though and it definitely looks like there is no pipe in the proper exit pipe location so it is almost definitely a trap. weird that there is a 1 up that looks like it's impossible to get though |
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rbudrick
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« Reply #127 on: March 13, 2008, 04:14:22 pm » |
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Well, the fact that the youtube video is a unglitched version of the game and the player specifically skipped this part tells me it was put there on purpose. So, we either need to find this version or get the X1 version.
-Rob
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Googie
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« Reply #128 on: March 13, 2008, 04:17:03 pm » |
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I just played through the latest build, here's what I gotta say... :thumbsup: eeee! Can't wait for the next build. |
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deespence2929
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« Reply #129 on: March 13, 2008, 04:26:01 pm » |
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I tried pm'ing the guy who made the video on youtube, but I didn't get a responce.
Good job on world 4 anyway. It sucks that so much stuff needs replacing tho. Some of those things are what made the SMB Special, special. I hope you can add in the spikes or whatever in the end. Or someone will step up and put them in.
Once idea I had a while ago was what if you built the game on a Duck Hunt/SMB cart. and you can use the Duck Hunt space for parts of the hack.
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Googie
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« Reply #130 on: March 13, 2008, 04:28:03 pm » |
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Oh man, that be pretty cool! I gotta find that ROM to see how many kb it has, I don't even think I have that one. ^____________________^
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Karatorian
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« Reply #131 on: March 13, 2008, 05:42:10 pm » |
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The SMB+DH rom I have is 80k, 4 banks of PRG-ROM and 2 banks of CHR-ROM. The header says that it's a mapper 66 (GxROM and compatible) game and (as is apparently common for mapper 66 games) has the mirroring set wrong. FCEU runs it, but I recall having issues with it in some other emulator.
IMO, I'd proably be easier to simply do a rom expansion on SMB than to hack up SMB+DH to use the extra space.
Edit:
Does anyone know how much faster the SMBS timer is than the SMB one? I know it's faster and would like to have my info file generator provide the equivilant time in it's header info section. However, I don't trust the timing of the emulators I'm usings. I've been running PC88Win through Wine, so that could affect it's timing and the docs for the Linux emu I've found (quasi88) specifically say that it's timing isn't very accurate.
I'm sure someone who knows SMBs internals could tell me exactly how fast the SMB timer goes down. (In frames, preferably.) So basically, I just need an idea of how fast the SMBS timer goes down on an accurate emulator or real hardware. I don't know which PC88 emu has the most accurate timing, but if someone does, could you check it out for me?
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« Last Edit: March 13, 2008, 06:04:57 pm by Karatorian »
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frantik
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« Reply #132 on: March 13, 2008, 09:59:22 pm » |
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the fact that the youtube video is a unglitched version of the game and the player specifically skipped this part tells me it was put there on purpose well we can't draw that conclusion from the player using a glitch, but I did check out the video and you can see that the platform is indeed missing during the brief flash of that room on the screen.  i still doubt it was intentional but who knows.. and it's still low on the priority list imo compared to hidden power up blocks and various enemies which need to be added. I think falling spike enemies shouldn't be too hard to add since they don't have very complicated movements or anything. right now I'm mostly focusing on making sure all of the basic level layout is implemented as faithfully as much as possible. once all 8 worlds are ported over then if nobody else has started work on enemy code i will try to see what I can do. thats one area i'm not super familiar with in SMB so if anybody else wants to give it a shot be my guest. karatorian here's the game timer routine in SMB which is called every cycle. I'm not 100% sure but I think the timer ticks down every $18 game cycles when the GameTimerCtrlTimer expires. edit: yep i modified "ResGTCtrl: lda #$18 ;reset game timer control" and was able to speed up the clock  ;-------------------------------------------------------------------------------------
; $b74f-$b7a3 ( 0x375f - 0x37b3 ) run game timer routine
RunGameTimer:
lda OperMode ;get primary mode of operation
beq ExGTimer ;branch to leave if in title screen mode
lda GameEngineSubroutine
cmp #$08 ;if routine number less than eight running,
bcc ExGTimer ;branch to leave
cmp #$0b ;if running death routine,
beq ExGTimer ;branch to leave
lda Player_Y_HighPos
cmp #$02 ;if player below the screen,
bcs ExGTimer ;branch to leave regardless of level type
lda GameTimerCtrlTimer ;if game timer control not yet expired,
bne ExGTimer ;branch to leave
lda GameTimerDisplay
ora GameTimerDisplay+1 ;otherwise check game timer digits
ora GameTimerDisplay+2
beq TimeUpOn ;if game timer digits at 000, branch to time-up code
ldy GameTimerDisplay ;otherwise check first digit
dey ;if first digit not on 1,
bne ResGTCtrl ;branch to reset game timer control
lda GameTimerDisplay+1 ;otherwise check second and third digits
ora GameTimerDisplay+2
bne ResGTCtrl ;if timer not at 100, branch to reset game timer control
lda #TimeRunningOutMusic
sta EventMusicQueue ;otherwise load time running out music
ResGTCtrl: lda #$18 ;reset game timer control
sta GameTimerCtrlTimer
ldy #$23 ;set offset for last digit
lda #$ff ;set value to decrement game timer digit
sta DigitModifier+5
jsr DigitsMathRoutine ;do sub to decrement game timer slowly
lda #$a4 ;set status nybbles to update game timer display
jmp PrintStatusBarNumbers ;do sub to update the display
TimeUpOn: sta PlayerStatus ;init player status (note A will always be zero here)
jsr ForceInjury ;do sub to kill the player (note player is small here)
inc GameTimerExpiredFlag ;set game timer expiration flag
ExGTimer: rts |
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« Last Edit: March 13, 2008, 10:10:39 pm by frantik »
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Karatorian
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« Reply #133 on: March 14, 2008, 02:56:22 am » |
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What does a game cycle mean? Is it one frame, or some other length of time?
Given that you where able to to speed up the clock, that gives me an idea. Rather than reduce the level time limits to an equivilent length of time, you could speed up the clock. Which do you think would be better?
Of course, we'd still need to figure out how fast the SMBS clock is either way.
On a related note, is Mario faster in SMBS than in SMB? When running, he seems to really zip along. (Oh dear, I can't belive I'm actually contemplating changing the physics. Is that a bad sign?)
I'm not too familiar with the SMB code myself, but I've managed to get a good grasp of 6502 ASM, so I am interested in helping out in that department. In regards to the changes you've implimented so far, have you been building from a modified disassembly, or have you just been hexediting the ROM itself? (Personally, I prefer the former method, if reasonable, which in SMB's case, I'd say it is.)
In either case, it'd be nice to know what changes you've implimented so far. While I could, of course, tease them out of the patches you've made, it'd be wasted effort.
Seeing as you've mentioned that space is getting pretty tight, I could work on expanding the ROM.
Finally, could anyone who's familar with the SMB code tell me whether doppelganger's or F.H.'s disassembly is better?
After looking at them, the answer is pretty clear, doppelganger's is the way to go. I've already gotten it to assemble and am looking into expasion.
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« Last Edit: March 14, 2008, 04:25:21 am by Karatorian »
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frantik
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« Reply #134 on: March 14, 2008, 03:13:30 am » |
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i think it would be much better to just adjust the timer so it runs at the same time. I was thinking one way you could measure the time using relative length meters would be to note where in the theme song the time runs out.
Changes i've made so far besides level stuff
* add upside down pipes and red pirhanna plants
* modify ground tile layouts (like for castles and whatnot so the top brick is lower)
* modify background tiles a little bit
* modify underwater pipe palette and background palette
* modify underwater background type
* modify sideways pipe object to use the same tiles from the other sideways pipe
i think thats it so far.. and i've just been hex editing the existing rom..
I'm not sure what the F.H. disassembly is but doppleganger's is 100% complete.
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