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Jul - The Cutting Room Floor - The P'Radikus Conflict New poll - New thread - New reply
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Rick
M'Lord, there's a knife in your head!
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Posted on 11-05-13 01:42:08 AM (last edited by Rick at 11-05-13 02:27:49 AM) Link | Quote
So! Just recently the authentic source code floppy disk for the Color Dreams game The P'Radikus Conflict was put up for sale on eBay.

Yours truly decided to buy TCRF an early Christmas Present and got the source code instead of someone who wouldn't be as nice and possibly not release it. It was a worthy $236 investment!

We're starting to look through the code now in order to see if there's any little unused pieces at the moment. Stay tuned, there's some juicy tidbits! However, it doesn't seem to be a prototype at the moment. The files are, however, dated between 4/29/90 to 5/29/90, so it's very likely it's the final build.

If you wanna be nice and donate (you don't have to) to help offset this, because this was a pretty big purchase for me at a time when I could be moving into an apartment as soon as a few weeks, my paypal is lefthooktohead@gmail.com and it would be super totally cool of you to do. Thanks. :3

So yeah guys. Merry Early Christmas! I think we might have found a neat tidbit or two already...

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Kak

...
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Posted on 11-05-13 04:16:41 AM Link | Quote
Rick is Santa Claus in disguise, and he is already delivering presents, apparently.

Nice one! Let's see if with the source code we can get something similar to the Doom article.

Also, because I'm already super-curious, what is the tidbit?

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devin

Yoshi
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Posted on 11-05-13 05:07:12 AM Link | Quote
Yeah here's that thing Rick just mentioned I guess

There's a known cheat code (pause, B U R A D L) which is listed on GameFAQs as giving you the most powerful secondary weapon in the game, but in addition to that it basically gives you maximum ship upgrades, unlimited fuel and ammo, invulnerability, and lets you warp to the P'radikus sector (i.e. the final area) immediately.

That's not the fun part; there is a bit of commented out source code such that using the cheat would have made the game unwinnable, killing the player as soon as they warped to the final area and then showing this instead of the game-over screen:



The "cheaters never prosper" text is still in the ROM, but now unused.

The relevant code is scattered around PRAD.ASM:

 
INITWARP: LDA     PRADIKUS

            BEQ     INITWP1

             LDA     CHEAT

               BEQ     INITWP1

;cheater!

                LDA     #H'FF

               STA     CHEATDIE



[this is part of the ingame loop]


CTRL0:       

;;;;        LDA     CHEATDIE

;;;;        BEQ     CTRLA

;;;;   LDA     #0

;;;;      STA     HASPLAYED       ;disable continue!

;;;;      JSR     KILLPLYR


CTRLA:  LDA     J1CHG

       AND     #START

      BEQ     CTRL1


;pause if START is pressed



STATCHEAT:     LDX     #ENDTXT6 &H'FF

              LDY     #ENDTXT6 >> 8

               JSR     DOPRINT

             JMP     STATDONE


[this is where the ending screen code starts]


STATISTICS:        JSR     VR_WAIT

             JSR     KILL_VID

            JSR     ZAP_SPRITES

         

            LDA     #4

          JSR     XVIDEO


;;;;              LDA     CHEATDIE

;;;;                BNE     STATCHEAT               


[blah blah]


ENDTXT0:     .DB      4, 5, "YOU HAVE BEEN DESTROYED!", -1

ENDTXT1:       .DB      4, 5, "    CONGRATULATIONS!", -1


[et cetera]


ENDTXT6:    .DB      3,14, "CHEATERS NEVER PROSPER...", -1


I guess at some point after commenting out the CHEATDIE stuff, they also shoehorned part of the infinite-everything code into KILLPLYR (which, cheat aside, is what happens when you run out of fuel... except you have infinite of it when using the cheat):

 
KILLPLYR:  LDA     CHEAT

               BNE     KP_CHEAT


                [blah blah, you're dead]


KP_CHEAT:       LDA     #99

         STA     ARMOR

               RTS


That's all for now. Not a whole lot of ~crazy hidden fun~ yet.

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devin

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Posted on 11-05-13 06:17:17 PM Link | Quote
Posting again to note that I'm also planning to edit the source code to allow it to be easily assembled using ca65 (but still distributing it in its original form, obviously), just to allow people to mess around with it easily (just for you weirdos who want to hack on Color Dreams games for some reason )

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ICEknight
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Posted on 11-05-13 06:58:30 PM Link | Quote
Please do try making a 1:1 image of the floppy if you can, as there might be more traces of deleted code and assets in there.
Rick
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Posted on 11-06-13 03:51:28 AM Link | Quote
I will but it requires me buying a USB floppy drive. Currently the files are only copy-pasted because that's all I can do.

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devin

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Posted on 11-07-13 01:35:10 AM Link | Quote
Last night I made the ca65-compatible assembly and played around with it a bit.

Just for fun I restored some commented-out code and data that displayed now-unused logo sprites for Bunch Games (which was supposed to be Color Dreams' attempt at saving their reputation by dumping all of their exceptionally poor games onto a different label...)



After it was removed, most of the same sprite indices were reused for the blinking PRESS START sprites. (I also removed the Color Dreams copyright text in this screenshot.)

There's a bunch (huhuhuh) more commented-out (and subsequently reworked) code scattered around elsewhere, but I haven't studied it too much; it'll be of a lot more interest to people who are actually familiar with this game

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Rick
M'Lord, there's a knife in your head!
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Posted on 11-07-13 01:41:08 AM Link | Quote
I'm hoping that someone around here actually is familiar with the game to some extent pops by if that's the case.

But it's actually really cool that there's a bunch of commented out code. These are the juicy tidbits I was hoping would be in here! :3!

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devin

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Posted on 12-21-13 12:25:02 AM Link | Quote
Here it is -> http://www.romhacking.net/documents/667/

ca65 assembler version (mine) -> http://dl.dropboxusercontent.com/u/43107309/pradikus-cc65.zip

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Jul - The Cutting Room Floor - The P'Radikus Conflict New poll - New thread - New reply


Rusted Logic
Acmlmboard - commit 47be4dc [2021-08-23]
©2000-2022 Acmlm, Xkeeper, Kaito Sinclaire, et al.

31 database queries, 3 query cache hits.
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