English Amiga Board - Fixing Strider sprite

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English Amiga Board (https://eab.abime.net/index.php)

- project.WHDLoad (https://eab.abime.net/forumdisplay.php?f=63)

- - Fixing Strider sprite (https://eab.abime.net/showthread.php?t=56810)

Galahad/FLT

16 April 2018 19:00

Quote:

Originally Posted by viddi (Post 1234942)

Brilliant. :)

I have an original copy of Strider. But all I can do is trying to make an ADF or DMS archive...

Strider is MFM as far as I recall.

Galahad/FLT

16 April 2018 19:03

Quote:

Originally Posted by ross (Post 1235059)

Hi Denis, there's an easy solution to manage/modify/save this image format on Amiga or PC?

[file 00000085 seems a PC1 file but an error in open is signaled.., i've to check from original floppy image]

I have written a PC1 to IFF converter if thats any help.

dlfrsilver

16 April 2018 19:34

Quote:

Originally Posted by Galahad/FLT (Post 1235114)

I have written a PC1 to IFF converter if thats any help.

There's no need in fact, they have buried the files as it is directly in the MFM encoding.

More straight port, you can't beat that lol !

ross	16 April 2018 20:12

Quote:

Originally Posted by dlfrsilver (Post 1235110)

I have renamed by comparing the ST file names the unnamed Amiga files :

So the ST files and Amiga files are *exactly* the same?
How ST manage the unaligned sprite? Or suffer also garbage on screen like the Amiga version?

Quote:

Originally Posted by Galahad/FLT (Post 1235113)

Strider is MFM as far as I recall.

Yes MFM, but is really simple to extract the hidden files (loader at $988);
the VT DOS/0 cracked version contain files named like 000000xx, where xx is the indexer used in original loader.

Quote:

Originally Posted by Galahad/FLT (Post 1235114)

I have written a PC1 to IFF converter if thats any help.

Do you have also IFF->PC1 converter?
My goal is a full PC1->editor->PC1 just to be fast but even a double conversion is acceptable ;)

grafx2 works as expected but with a problem: repacked file are ~2K bigger so there is some floppy space concern..
I have not checked if he messes up with the bitplanes.
Maybe I'll rewrite a Packbit for the body part of Degas format. :banghead or make my format.

dlfrsilver

16 April 2018 22:31

Quote:

Originally Posted by ross (Post 1235129)

So the ST files and Amiga files are *exactly* the same?
How ST manage the unaligned sprite? Or suffer also garbage on screen like the Amiga version?

=> they are yes, exactly the same.

i don't know for the unaligned sprites. to be honest i have not seen the strider sprite bug.

What do you need ? PC1 files, CHR files or PRG.BIN ?

ross	16 April 2018 23:06

1 Attachment(s)

If files i've are not damaged i'm fine. I've attached a txt with their md5 checksums.
But if you can upload all yours ST ones to the Zone!, I can double check them ;)
Thanks.

Codetapper

16 April 2018 23:24

Quote:

Originally Posted by ross (Post 1234937)

Yes, can be made :)

No, WHDLoad for cracked copy is not accepted (there can be some exception due to lack of working original but this is not the case).

Well, like usual I do not have much free time (and the weekend has flown) but I see what I can do ;)

I usually try and support a cleanly cracked game if there is one, but in Strider's case the versions out were probably all so butchered I didn't bother. Many of my installs support the Quartex cracked versions as Robin cracked them cleanly so the disk images often match what you'd rip from the WHDLoad one.

I am happy to add your fixes into the WHDLoad version and/or send you the source if you need it.

malko

16 April 2018 23:33

Quote:

Originally Posted by Codetapper (Post 1235171)

I usually try and support a cleanly cracked game if there is one, [...] I am happy to add your fixes into the WHDLoad version and/or send you the source if you need it.

Excellent news :)

demoniac

17 April 2018 02:58

Quote:

Originally Posted by ross (Post 1234794)

I'm using the internal sprites renderer to find the garbage.

Notice this frame :shocked
So it's not only some black pixels in slope positions..

I remember seeing this before. I wasn't sure if it was the first game or the sequel.

ross	17 April 2018 12:09

Quote:

Originally Posted by Codetapper (Post 1235171)

I am happy to add your fixes into the WHDLoad version and/or send you the source if you need it.

:cool

Quote:

Originally Posted by demoniac (Post 1235188)

I remember seeing this before. I wasn't sure if it was the first game or the sequel.

Sure first game :)

ross	17 April 2018 18:24

1 Attachment(s)

Interesting.
I took some time to extract the files from the original disk (I did not totally believe in this cracked version, that's why I asked Denis for a double check).

And there is some difference:
- files 4b, 36, 64, 72, 85 have few different bytes;
- file a1 is really file 97 (and on this I would have bet since the game does not use 81 tracks);
- 9e is really file 94 (another easy bet because cylinder 79 is the "protection", a simple low/upper tracks unbalanced written bitcells speed check).

So cracked files 94 and 99, the Degas 32066 bytes PI1 files with zero-forced header color data, are not used (anyway they contain garbage).
Where did those files come from? A different version of the original disk? A prerelease? An error in data extraction?

Attached md5 from original files.

[EDIT:]
Buried somewhere there are also original Amiga files names,
in sector position order, so is simple to reassociate.

Code:

bstrider.prg

graphics/amsht1b.pc1

graphics/amsht2b.pc1

graphics/amsht3b.pc1

graphics/border.pc1

graphics/amsht6b.pc1

graphics/amdsht1a.pc1

graphics/chr1.cr

graphics/map1.chr

graphics/level1.tab

graphics/dsheet2a.pc1

graphics/chr2.cr

graphics/map2.chr

graphics/level2.tab

graphics/dsheet3a.pc1

graphics/chr3.cr

graphics/map3.chr

graphics/level3.tab

graphics/dsheet4a.pc1

graphics/chr4.cr

graphics/map4.chr

graphics/level4.tab

graphics/dsheet5a.pc1

graphics/chr5.cr

graphics/map5.chr

graphics/level5.tab

graphics/title.pc1

graphics/panel.dta

dlfrsilver

18 April 2018 00:27

Oh perfect ! So this fucking game has real files :D !

dlfrsilver

18 April 2018 00:28

Quote:

Originally Posted by ross (Post 1235301)

Code:

bstrider.prg

graphics/amsht1b.pc1

graphics/amsht2b.pc1

graphics/amsht3b.pc1

graphics/border.pc1

graphics/amsht6b.pc1

graphics/amdsht1a.pc1

graphics/chr1.cr

graphics/map1.chr

graphics/level1.tab

graphics/dsheet2a.pc1

graphics/chr2.cr

graphics/map2.chr

graphics/level2.tab

graphics/dsheet3a.pc1

graphics/chr3.cr

graphics/map3.chr

graphics/level3.tab

graphics/dsheet4a.pc1

graphics/chr4.cr

graphics/map4.chr

graphics/level4.tab

graphics/dsheet5a.pc1

graphics/chr5.cr

graphics/map5.chr

graphics/level5.tab

graphics/title.pc1

graphics/panel.dta

File 94 and 99 are unused files with header shopped off.

ross	18 April 2018 07:45

Quote:

Originally Posted by dlfrsilver (Post 1235376)

Oh perfect ! So this fucking game has real files :D !

Upped to the Zone!
Just for historical value or to aid fix some slaughtered tosec versions.
;)

dlfrsilver

18 April 2018 08:12

Quote:

Originally Posted by ross (Post 1235396)

Upped to the Zone!
Just for historical value or to aid fix some slaughtered tosec versions.
;)

I have already all the buggy ADF version fixed, because i found the faulty file.

It's file 3A :)

ross	19 April 2018 21:33

Ok, I took a decision on it.

Because:
- all "files" versions are based on Vision Factory crack that surely is from a pre-release or a leak (code/structure/raw data are somewhere different from retail),
- Quartex crack have some timing problem,
- Flashtro crack is a bit bugged and visually glitching,
I'll do my (little)enhanced cracked/trained ADF (and a successive WHDLoad version).

In the meantime i've fully patched sprites errors (a pain..).
I've even partially redraw a frame by hand, there was no alternative.

I hope this also does not pile up with other unfinished stuff :D

Galahad/FLT

19 April 2018 21:43

Quote:

Originally Posted by ross (Post 1235816)

Might I suggest that if you're going to do that, do Strider 2 at the same time and stick them on the same disk?

Both compress to fuck all.

DamienD

19 April 2018 21:47

Quote:

Originally Posted by Galahad/FLT (Post 1235818)

Might I suggest that if you're going to do that, do Strider 2 at the same time and stick them on the same disk?

Nooooooooo, IMHO multiple games on disk suck :p

ross	19 April 2018 21:55

Well, first I finish the single version then we'll see ;)

malko

19 April 2018 22:45

Did like the arcade version but not so much the Amiga one...
However a game having the "ross touch" is worth a rethink.

Quote:

Originally Posted by ross (Post 1235816)

Ok, I took a decision on it. [...]
I'll do my (little)enhanced cracked/trained ADF (and a successive WHDLoad version).
In the meantime i've fully patched sprites errors (a pain..).
I've even partially redraw a frame by hand, there was no alternative. [...]

ross, I am admire you :bowdown
(hope it has the same meaning in English as in French :laughing )

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