The NSMB Hacking Domain » How do you use bosses in MvL

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Ndymario

Posted on 05-31-16, 02:14 am

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ID: 48401
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Super Koopa
That MvL Hacker

Karma: 1776
Posts: 26/847
Since: 04-11-15

As the title says how could you do that, I know with ASM it's possible, But how could we/I/you do this. like is there a file that we force load or something along the line of that. I'm kinda new to ASM and all i know trying to get the Mega Goomba to work, crashes after the cutsceen. (Also I know Bowser Jr. Works

)
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Hiccup	Posted on 05-31-16, 10:05 am Hi. Link ID: 48410 +0
Birdo Karma: 2799 Posts: 1613/2091 Since: 06-26-11	Mega Goomba would need some hack to load (or remove the need for) the Mega Goomba particles. At least.

MoonlightCapital

Posted on 05-31-16, 12:36 pm (rev. 1 by

MoonlightCapital on 05-31-16, 07:02 pm)

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ID: 48414
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Not a hacker

Karma: 158
Posts: 84/153
Since: 04-05-16

Posted by Dirbaio

Okay, new version of the code.

Shadey and I have been testing this out on IRC and it seems to work.

This time it works by not loading the hardcoded sprite sets at all. It doesn't load overlay 53 at all either. So now you're free to set anything in any sprite set. Including sprite set 16.

End of level flag and Bowser Jr. are confirmed to work.
Other bosses probably will crash because the particle crap. (The same reason as bosses crash on other levels than the originals)

Also hex editing Overlay 53 in the overlay table isn't needed anymore since it's not even loaded.

We also had to put more patches so it wouldn't load the NARCs (they aren't even used now!). Otherwise it would run out of memory.

So this is the code:

@ Replaces calcFileId
nsub_02009394:
        mov r0, r0, LSL#16
        mov r0, r0, LSR#16
        
        @If file is NARC-only, lets pray the right NARC is loaded...
        tst r0, #0x8000
        bxne lr
        
        ldr r1, =0x02085D04
        ldrsh r1, [r1]
        add r0, r0, r1
        mov r0, r0, LSL#16
        mov r0, r0, LSR#16
        bx lr

@Force Tileset 2 to be loaded
repl_020B39C8:
repl_020B3A80:
repl_020AE018:
repl_020AE070:
repl_020AE184:
repl_020AE1B8: @I have no idea what this is?
        bx lr
        
repl_020AF9EC:
        mov R0, #0

@Free something. This is probably good.
repl_020B3C4C:
        bx lr   

@Disable spawning of initial VS Battle Star
repl_0209C4E0: 

@Force all player animations to be loaded (plnovs)
repl_02020738:

@Delete the hardcoded load overlay calls.
repl_021535BC_ov_34:
repl_021535C4_ov_34:
repl_021535CC_ov_34:
repl_021535D4_ov_34:
repl_021535DC_ov_34:

@Delete ov53:createOv53Heap() call
repl_021535EC_ov_34:

@Delete the hardcoded unload overlay calls.
repl_02152C34_ov_34:
repl_02152C3C_ov_34:
repl_02152C44_ov_34:
repl_02152C4C_ov_34:
repl_02152C54_ov_34:

@Delete ov53:destroyOv53Heap() call
repl_02152C2C_ov_34:
        bx lr
        
@Patch ov53:getPtrToOv53Heap() calls
@If result is 0, it will just use the default heap, which _should_ be fine.
repl_021535F0_ov_34:
repl_02153600_ov_34:
        mov R0, #0
        bx lr

@==============
@ NARC STUFF
@ NARCs suck, since we arent using them we should reaaally not load them.
@ Otherwise bye bye free RAM.

@ loadNarcForLevel
nsub_02018B40: 
        bx lr

@ Dont load dat_2d and dat_enemy
repl_021535FC:
repl_0215360C:
        bx lr

probably yes
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Hiccup	Posted on 05-31-16, 06:30 pm (rev. 2 by Hiccup on 05-31-16, 06:31 pm) Hi. Link ID: 48422 +0
Birdo Karma: 2799 Posts: 1614/2091 Since: 06-26-11	... that is the code he is already using. Have you read this thread, or the comments in the code you are quoting?

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