Monitors?

I want to edit the coding for a monitor in Sonic 2 (replace one that I probably will not use) but I don't know the locations of the monitors in the ASM file. Like how in the Special Ring Object (RHS's guide) it is at loc_1429C and some extra coding at loc_1428C (I think). Does anyone know where there is a list or know some of the locations of one or two (prefferably the Eggman one?) Thank you so much for the help in advance! Will credit those who help!

 

Search for SprPoint: in the ASM file 'til you come to a list. It looks like this:

Code:

; ---------------------------------------------------------------------------

; Sprite Programming Pointers

;

; This array contains the pointers to all the level sprites used in the game.

; ---------------------------------------------------------------------------

SprPoint: dc.l Sprite_19F50&#59; 0&#59; DATA XREF: sub_15FCC+8t

dc.l Sprite_1B8A4&#59; 1

dc.l Sprite_1FCDC&#59; 2

dc.l Sprite_208DC&#59; 3

dc.l Sprite_1D200&#59; 4

dc.l Sprite_214C4&#59; 5

dc.l Sprite_24020&#59; 6

dc.l Sprite_1DD20&#59; 7

dc.l Sprite_338EC&#59; 8

dc.l Sprite_1D320&#59; 9

dc.l Sprite_2009C&#59; 10

dc.l Sprite_20210&#59; 11

dc.l Sprite_191B8&#59; 12

dc.l Sprite_12E18&#59; 13

dc.l Sprite_13600&#59; 14

dc.l Sprite_347EC&#59; 15

etc, etc.


The object number goes as so


01


02


03


04


05


06


07


08


09


0A


0B


etc, etc.


So, object 26 (monitors) is


dc.l Sprite_12670 ; 37

 

Thanks. Will credit where used.


Quick Edit: Does anyone know which loc_xxxxx under the Sprite Monitor section is the Eggman monitor?

 

Match the byte to the loction.

 

For future reference, http://info.sonicretro.org/SCHG:Sonic_2/Ob...diting/Pointers contains the addresses for all objects. Note that object $26 (the monitor) just contains the code for displaying the monitor and breaking it, and that the power-ups themselves (and the image of the monitor floating up in the air) are handled by object $2E. The code for the robotnik power-up is located at loc_12938 in Nemesis' disassembly, or badnik_monitor in Aurochs' disassembly (which I highly recommend). Note that this code is shared with the static monitor, so it might be better if instead of changing this subroutine directly, you changed the entry for the robotnik monitor in off_12924 (it's the 4th entry) to point to your new subroutine.

 

Thanks a lot! Out of curiosity, where could one get the Auroch's disassembly? It sounds so much easier to work with. The Project Files would mess with my head for a bit, but that is a five minute job.

 

http://info.sonicretro.org/Disassemblies. SMTP was nice enough to fix the three small "bugs" in the disassembly, so you'll only have to make your own project files.


The S2Beta topic is http://www.s2beta.com/forums/index.php?showtopic=7909. It contains some useful information, but ignore the bugfixes in the topic, since SMTP fixed them in the download link given above.