Basic Questions and Answers Thread

Look to Titlescreen:'s Title_LoadText: for move.w    #$178,($FFFFF614).w ; run title    screen for $178    frames

EDIT: though I warn you, too long & the logo will move upward, then load SegaScreen

 

warr1or2, Obj08 in Sonic 2 is more than the spindash dust. It is also the splash and skid dust. The object just used 1 mappings, DPLCs, and animation file. How it works is that it loads the appropriate art when Sonic skids, jumps in or out of water, or when he spindashes. The art is determined by its current animation.


If you where to look further into the mappings and DPLCs, you would see the spindash dust frames. Same for the splash and skid dust.


Hopefully, it makes sense now.

 

What if there isn't a specific art_tile set for each one? That would mean the mappings don't point directly to the art, so SonMapEd won't display the Spin Dash frames properly.

 

Somewhere in the shield's code, it will call to use Sonic's object status. Commenting that line out should do the trick. (Sorry I can't recall the exact line, I don't have a disassembly on me at the moment.)

 

Note that the above fix removes the shield's ability to flip horizontally with the player.

Now, the shield flipping vertically is indeed a bug, but if you want the horizontal flipping, see my quoted post from this topic below.

Spoiler

Sonic's Status bitfield


Bit  Hex  Description

0  $01  Orientation. Clear is left and set is right.
1  $02  Set if Sonic is in the air (jump counts).
2  $04  Set if jumping or rolling.
3  $08  Set if Sonic isn't on the ground but shouldn't fall. (Usually when he is on a object that should stop him falling, like a platform or a bridge.)
4  $10  Set if jumping after rolling.
5  $20  Set if pushing something.
6  $40  Set if underwater.
7  $80  Unused.

Notice something? Sonic's 'in air' bit is the same as the object's 'Y orientation' bit. So, when in the air, the object appears upside-down, having inherited the 'in air' bit.

S3K's shields would combat this by using 'andi.b #1,obStatus(a0)' to limit Status inheritance to the 'X orientation' bit.

 

About the Spindash dust, I wondered about this a while ago too. But now I have to ability to read the code and figure out why it wouldn't work in SonMapEd.

To start with I looked at Obj08 and found this in the PLC code:


addi.l #ArtUnc_Splash,d1 
You can see that it loads the Splash art. So where does the Dust get loaded? ArtUnc_Dust doesn't get loaded by itself but with the Splash art:


;--------------------------------------------------------------------------------------
; Uncompressed art
; Splash in water ; ArtUnc_71FFC:
align $20
ArtUnc_Splash: BINCLUDE "art/uncompressed/Splash.bin"
;--------------------------------------------------------------------------------------
; Uncompressed art
; Smoke from dashing ; ArtUnc_7287C:
align $20
ArtUnc_Dust: BINCLUDE "art/uncompressed/Spindash smoke.bin"

To fix the problem simply combine the two art files and it will load correctly in SonMapEd. Also remove the Binclude for the dust art as it's no longer needed

Does anyone know why the two files are split in the first place? Seems like this fix could be implemented to the GitHub version with no problems.

Edit: It seems like if anything the Skid Dust art should be split as the mappings point to the wrong place both before and after combining the art. This would allow people to easily change the art of the Splash, Spindash Dust and Skid Dust. 

 

Somewhere in the shield's code, it will call to use Sonic's object status. Commenting that line out should do the trick. (Sorry I can't recall the exact line, I don't have a disassembly on me at the moment.)




Thanks! It worked great! I didn't want it mirror when you walk the other direction anyway.

 

I'm a bit confused on porting HPZ from sonic 2 to sonic 1 for RIS1:AGBW. the Hidden Palace Zone, when loaded to sonlvl, Looks like it should in game (course I converted the level from S2B). It always crashed when loaded. So i tried deleting some chunks & the level loaded, but the tiles look like those of GHZ. I have the updated sonlvl & i did not copy chunks from GHZ (much less MZ) to HPZ


Blk16_HPZ:    incbin    HPZBlocks.bin
        even
Nem_HPZ:    incbin    HPZTiles.bin    ; HPZ primary patterns
        even
Blk256_HPZ:    incbin    HPZChunks.bin

But somehow it loads grassy tiles like those from GHZ & MZ & also Richter falls to his death in the level.

I do have a copy pasted aniart from MZ, but it's never loaded cause i have it

bra aniart_none
so that it won't load it, so this can't be the problem.

Video

 

You have to change the main Zone art and mappings pointers to access your included files. If it works anything like S2, there should be a "Main Level Load Block", which does this. Judging from themess you showed, its probably pointing to Ghzs art as well as mappings and chunks from elsewhere.


Sorry if theres bad grammar, mobile sucks...

 

dc.l Nem_HPZ+$4000000
    dc.l Blk16_HPZ+$5000000
    dc.l Blk256_HPZ
    dc.b 0,    $94, $14, $14
  
straight from Main Level Load Blocks.asm

EDIT: Sonlvl pik

 

+$4000000

+$5000000

The 68k is 24-bit based addressing (24-bit BUS), meaning that when a 32-bit address is being used, only the lower 24-bits will be accepted, the upper 8-bits are omitted/masked. Sonic Team supplied the + values there to set the 32-bit value as PPAAAAAA. Where AAAAAA is the address of the main art/block data, and PP is the pattern load cue ID. Since the MSB is useless, they put it to use for optimisation reasons.

In the above case, the PLC ID's 04 and 05 are used. If memory serves me right, that's Green Hill Zone's PLC parts 1 and 2.

 

I've changed it out to like +$2000000 & $3000000 & even tried commenting those parts, also tried $10000000 & $11000000 & no change so i'm guessing this part gets ignored

 

Hi!
The super peelout code here: http://sonicresearch.org/forums/index.php?showtopic=2403have a problem, when i'm "peeling'out", Sonic is go like that:

http://image.noelshack.com/fichiers/2015/12/1427060355-ss.png

Someone can help me? I've try to fix this "bug", by changing the code but no results.

 

Just move the mappings up a tile or so.


That should fix it.

 

No no, it's not necessary, because the sprite go down just when i'm peeling'out, and i'm forced to jump to return in normal position.
http://image.noelshack.com/fichiers/2015/12/1427062534-sans-titre.png

 

Because you're probably having sonic's rolling status set when you're in that animation. Rolling status pushes sonic down 4 pixels (I think), so make sure you're not setting that.

 

i think me too, so i just have to search the value that i have to change! 

 

Ashuro the way your pik describes it, you have to move the peelout's frames in sonmaped, but however Irix is right. there's probably a flag set causing this. I've had this same thing happen when porting the spindash one day. Drove meup the wall. Good thing i scrapped that project (Somewhat)

EDIT: to find out which is right, make changes in sonmaped (which you've probably done), if it's not it, check for flags. I do recall my problem it set the flag with standing, after jumping fixed it.

 

The problem about peelout was fixed!

Now i have a question, i'm using SonED2 basically, but i want to test SonLVL, and there is a problem:

http://image.noelshack.com/fichiers/2015/13/1427206588-sans-titre.png

There is no badnicks or objects from other zone?

EDIT: In fact, i've try to edit Labyrinthe Zone, in SonLVL there is no badniks, and in other zones, there is no all the object can be existing in the game or in SonED2... Why?

 

1. SonLVL's object definitions are very incomplete. I haven't had the time or will to figure out every single object and figure out how to make it display properly, and few others seem willing to step in.

2. By default, SonLVL will only show the subset of objects whose graphics are actually loaded for the level you're editing. There's no sense in letting you place a Moto Bug in Labyrinth Zone, if you'll just get a broken mess ingame.

You can still double click or right click and choose "Add Object" and enter an ID manually to place any object in the game.