Quick Research & Development Thread

[DoesntKnowHowToPlay]

Requested mons for trades are in the trade data. The format isn't documented anywhere that I know of, but if you search the ROM for the nicknames/OTs of the traded mons you'll find the structs which contain that, as well as what mons you recieve.

It's almost certainly possible to repoint and expand this, too. If you can figure out what more than five or so of the parts of that table do please write it down, I'm sure a lot of people could put it to use.

 

[Le pug]

Requested mons for trades are in the trade data. The format isn't documented anywhere that I know of, but if you search the ROM for the nicknames/OTs of the traded mons you'll find the structs which contain that, as well as what mons you recieve.

It's almost certainly possible to repoint and expand this, too. If you can figure out what more than five or so of the parts of that table do please write it down, I'm sure a lot of people could put it to use.

Well I found that DOTS the Ralts is at 338ED0 ... no repoints go to it or any of the following also:
PLUSES the Volbeat at 338F0C and 338F84 for MEOWOW the Meowth

Edit: still researching around ... but I found that at 338F44 is the appropriate "82 01" which is Volbeat's pokemon number. Changed it to 81 01 to see if it would now register to look for Castform and it worked!

edit 2: so i used the program Trader Advanced ... there is an option to add more trades to the game. When I added more and tested to see if the var 8008 would allow the player to search for the pokemon in his party and it worked. So for a checkpokemoninyourparty command all you need:

This script:

Spoiler:

setvar 0x8008 0x(your number from Trader Advance minus one)
copyvar 0x8004 0x8008
special2 LASTRESULT 0xFF
copyvar 0x8009 LASTRESULT
special 0xA2
waitstate
copyvar 0x8005 0x8004
special2 LASTRESULT 0x102
copyvar 0x800B LASTRESULT
comparevars LASTRESULT 0x8009
if 0x1 goto @continuewithscript

and download Trader Advanced and add as many as you want and change what pokemon each number checks for :D

credits go to me for the research... mr_mako helped out by suggesting the program Trader Advanced and of course the maker of T.A. ty for the program

 

[Danny0317]

If anyone ever wants to make a tag battle script in Emerald, here's something that can help you :)

#dynamic 0xE40000
#org @start
lock
special 0x28
fadescreen 0x1
special 0x2A
waitstate
compare LASTRESULT 0x0
if 0x5 goto @yes
special 0x29
goto @end

#org @yes
special 0xFB
setvar 0x8004 0x2
setvar 0x8005 0x4
special 0xEA
setvar 0x8004 0x8
setvar 0x8005 0x0
special 0xEF
waitstate
setvar 0x8004 0x6
special 0xEA
special 0x29
copyvar 0x8000 LASTRESULT
compare 0x8000 0x1
if 0x1 goto @continue
fadescreen 0x1
special 0xCB
waitstate
goto @continue

#org @end
release
end

 

[esperance]

Check/Count a Specific Pokémon Species in the Party (FR/LG/Em)

So I'm not sure if there is a way to do this by scripting in these games, and I saw that trading-style thing post just a few above, but I wrote up a quick bit of ASM code to count the number of a specific species of Pokémon in the party, as a bit of practice for myself, and I thought I would share it.

The reason I wrote is so that it could be mainly used as a checkpartypokemon-like command in a script.

It works for FireRed and LeafGreen with no changes, works for Emerald by performing the changes given, and will probably work with any game as long as you find the matching offsets. ;)

Anyway, here's the ASM for FR/LG:

.text
.align 2
.thumb
.thumb_func
.global CountPartyPokemonSpecies

main:
	push {r0-r7, lr}
	mov r5, #0x0 @ This means fail
	ldr r6, var
	ldr r7, party_amount
	ldrb r4, [r7] @ Get Pokemon count from r7
	cmp r4, #0x0
	beq exit
	ldrh r3, [r6] @ Get the species to check
	cmp r3, #0x0
	beq exit @ Don't allow Missingno. This doesn't limit the species from going up, though.
	mov r7, #0x0
loop:
	ldr r0, first_pokemon @ Offset of first Pokemon
	mov r1, #0x64 @ Length of Pokemon RAM data
	mul r1, r1, r7 @ r7 holds current index
	add r0, r0, r1
	bl decrypt_poke_species @ Get this specific species.
	mov r9, r0
	pop {r0-r7}
	cmp r9, r3
	bne next
	add r5, r5, #0x1 @ Increase the counter
next:
	add r7, r7, #0x1 @ Increase party index
	cmp r7, r4 @ And compare against the number in the party
	blo loop @ I could use a bls here?
exit:
	str r5, [r6, #0x10] @ Store the result (r5) in r6 (the var -- 0x800D)
	pop {r0-r7, pc} @ Return

decrypt_poke_species:
	push {r0-r7}
	mov r1, #0xB @ This is the index for the Pokemon species.
	ldr r2, decrypt_poke @ Call the Pokemon decryption code
	bx r2
	
.align 2
party_amount:
	.word 0x02024029
first_pokemon:
	.word 0x02024284
var: @ Got this beauty from HackMew.
	.word 0x020270B8 + (0x8004 * 2)
decrypt_poke:
	.word 0x0803FBE9

And to work for Emerald, you need only change the end stuff:

.align 2
party_amount:
	.word 0x020244E9
first_pokemon:
	.word 0x020244EC
var: @ Got this beauty from HackMew.
	.word 0x020275D8 + (0x8004 * 2)
decrypt_poke:
	.word 0x0806A519

Some of it is based off some stuff from HackMew's Pokemon take away code, so yeah.

And of course, here's a sample script explaining how to use it:

#dynamic 0x800000

#include stdpoke.rbh

#org @start
lock
faceplayer
bufferpokemon 0x0 PKMN_MAGIKARP
setvar 0x8004 PKMN_MAGIKARP // Change this to the species you want
callasm 0x08XXXXXX // This is the offset of the routine + 1
compare LASTRESULT 0x1 // The count is stored in 0x800D
if B_>= goto @some // It will be 0 if there is none, or 1-6 for the count
msgbox @m1 MSG_KEEPOPEN // It also counts eggs, so yeah...
release
end

#org @some
buffernumber 0x1 LASTRESULT
msgbox @m2 MSG_KEEPOPEN
release
end

#org @m1
= You don't have any [buffer1]!

#org @m2
= Wow! You have [buffer2] [buffer1]!

I hope someone finds this useful, even if for just an example for beginners to learn from.
Enjoy~! ^_^

EDIT: I added Emerald, although I didn't test it. ;)
EDIT 2: I tested the Emerald code, and it works. ^_^

 

[Danny0317]

writebytetooffset 0x2 0x2037590 in Emerald makes you go fast (mach bike fast). Thanks kboy6 for helping me find that =).
Anyways, when you use the bike, that's what happens. However, when I do the writebytetooffset 0x2 0x2037590 your speed changes, but not OW. I'm gonna try to figure something out to make the sprite change, once I do, I'll post that here =)

 

[Mana1]

By the way, has anyone figured out exactly how HM badge limits are done?

I saw this post just yesterday. Should be able to work off the offset given?

 

[Danny0317]

Why not build on this—could this be invoked to speed up bike-riding in FireRed, I wonder? By having this automatically execute in place of how it currently works?

Since it works in Emerald, I imagine the same could be done (to a different offset) in Ruby/Sapphire.

By the way, has anyone figured out exactly how HM badge limits are done?

There is an offset for Fire Red, found by diegoisawesome, I'll get it in a bit. And about your question, are you talking about the ones like rock smash, or the ones like surf, waterfall, etc?
In Emerald, I found the surf script, it had no checkflag 0x(badge) but rather checkattack 0x39(surf) so maybe it's in the movement permission 4?

 

[Mana1]

Does anyone know how/why many OW's have default text-colours (red/blue) and how this could be changed?

 

[Spherical Ice]

Does anyone know how/why many OW's have default text-colours (red/blue) and how this could be changed?

This link should help you out.

 

[Danny0317]

So I don't know if this has been done before, but in Emerald I was able to find out how to use surf while controlled by a different flag(in this case I made it the first gym flag)
It was very simple, go to 0x9c81c and replace those two bytes with the reverse hex number.

Here is a video as demonstration. https://www.dropbox.com/s/xmzdo1dc32cyz9c/vid.AVI

However, as of now, it can't be used from the Pokemon menu, gonna try to fix that.

And if anyone wants to do this for FR, I found this by first:
Looked for the hex version of checkattack 0x39 in the rom.
Found the script (surf script), and got the offset.
Made it a pointer, looked for it in the rom, then I noticed that close to it, it had a flag, the fifth gym flag, so as a test I tried to change it to the first gym flag, and it worked ^__^

 

[Touched]

So I don't know if this has been done before, but in Emerald I was able to find out how to use surf while controlled by a different flag(in this case I made it the first gym flag)
It was very simple, go to 0x9c81c and replace those two bytes with the reverse hex number.

Here is a video as demonstration. https://www.dropbox.com/s/xmzdo1dc32cyz9c/vid.AVI

However, as of now, it can't be used from the Pokemon menu, gonna try to fix that.

And if anyone wants to do this for FR, I found this by first:
Looked for the hex version of checkattack 0x39 in the rom.
Found the script (surf script), and got the offset.
Made it a pointer, looked for it in the rom, then I noticed that close to it, it had a flag, the fifth gym flag, so as a test I tried to change it to the first gym flag, and it worked ^__^

Haven't tested this, but there is a dword at 0806D59C that is loaded by the surf routine that currently reads 24 08 00 00 (0x824 - fifth gym badge). That's a flag check right there. That might help you with the Pokemon menu issue.

 

[esperance]

So I don't know if this has been done before, but in Emerald I was able to find out how to use surf while controlled by a different flag(in this case I made it the first gym flag)
It was very simple, go to 0x9c81c and replace those two bytes with the reverse hex number.

Here is a video as demonstration. https://www.dropbox.com/s/xmzdo1dc32cyz9c/vid.AVI

However, as of now, it can't be used from the Pokemon menu, gonna try to fix that.

And if anyone wants to do this for FR, I found this by first:
Looked for the hex version of checkattack 0x39 in the rom.
Found the script (surf script), and got the offset.
Made it a pointer, looked for it in the rom, then I noticed that close to it, it had a flag, the fifth gym flag, so as a test I tried to change it to the first gym flag, and it worked ^__^

I actually posted the stuff for FireRed about two years ago. ^_^

For anyone that wants to change the badge required for surf, the offset of the flag is 0806D59C. Also, I'm pretty sure that 0806D5D0 is waterfall, but I haven't tested it. (FireRed)

There seriously needs to be like an index for all of these posts...

 

[machomuu]

There seriously needs to be like an index for all of these posts...

I was thinking the same thing. This thread is filled with unfiled information, making it useful, but at the same time, a crapshoot to look through. Generally it's a case of someone remembering a specific post and linking to it, but when someone comes into this thread looking for something specific, they could very easily miss it in these 23 pages of info (and counting).

 

[Shiny Quagsire]

I actually posted the stuff for FireRed about two years ago. ^_^


There seriously needs to be like an index for all of these posts...

That is why we create fully-blown Research threads. Guess I'll span the HM discussion into one later.

I think it wouldn't be too horrible if there was a sort of research "index" which compiled all the existing research into a nice, quickly searchable index thread. I've had mixed results with the PC search tool in the past and an index thread would be great. Especially if it covered all the mini posts covered in this thread (which is a lot).

 

[Touched]

…yeeeeah don't use PC's search. </responsible admin>

If anyone wants to compile a list of a topic of interest, we can try it and I'll slip it into the first post.

Actually, let's create an index for the entire R&D forum, which we can categorise everything into.

I could write a script that checks every post on this forum for code tags and strings formatted like offsets, if you want (maybe some other criteria, too). That would filter out most of the conversation and only give out the information in need of indexing. Let me know if that would be useful.

 

[knizz]

I could write a script that checks every post on this forum for code tags and strings formatted like offsets, if you want (maybe some other criteria, too). That would filter out most of the conversation and only give out the information in need of indexing. Let me know if that would be useful.

IMO nothing beats a hand-written summary. This board isn't very fast anyway.

 

[Mana1]

Rather than overcomplicating it we just need someone to go through this thread and put the posts/findings into categories, with short descriptions and links. It wouldn't take that long to comb through. I'm away for the weekend but I'm happy to make something on Monday if it'll help order this thread. Can always add other, individual threads to that list afterwards.

Ala:


Feel free to copy/paste this and add your own - remember to quote to get the formatting and links. If you feel I've missed anything important (I'm on to Page 5) then feel free to add it in wherever. I'm only looking quickly and people may value different pieces more than my rookie eye.

[FONT=&quot]

Research & Development Directory

Graphics Research

[FireRed] Bag-arrow animation (knizz)

Scripting Research

[FireRed] Decap for plural items (colcolstyles)
[Emerald] Egg Hatching Script (diegoisawesome)
[FireRed] HM Animations (knizz)

Mechanics Research

Hex Editing:
[Ruby] Editing Battle Tower opponents. (Chaos Rush)
[FireRed] Making HMs Deleteable (JPAN)
[Emerald] Altering badge effects (diegoisawesome)
[Emerald] Steven's double battle team (Wichu)
[FireRed] Controlling other OWs in game (knizz)
[FireRed] Run without holding B (sonic1)
[FireRed] Player Movement info (knizz)
[FireRed] Pokedex Classifcation (colcolstyles)
[FireRed] Titlescreen Duration/Frames (colcolstyles)
[D/P] Pokedex Order | Post 1 | Post 2 (Imdst&Knizz)
ASM Required:

Other

[All] Save blocks locations / Using Variables safely (JPAN)


[/font]

 

[daniilS]

Rather than overcomplicating it we just need someone to go through this thread and put the posts/findings into categories, with short descriptions and links. It wouldn't take that long to comb through. I'm away for the weekend but I'm happy to make something on Monday if it'll help order this thread. Can always add other, individual threads to that list afterwards.

Ala:

Spoiler:

[FONT=&quot]

Research & Development Directory

Graphics Research

Scripting Research

Mechanics Research

[Ruby] Editing Battle Tower opponents. (Chaos Rush)
[FireRed] Making HMs Deleteable (JPAN)

Other

[/font]

I think we should split the mechanics section into two: asm routines and simple hex edits.

 

[Spherical Ice]

Quick Research/Development Thread Directory

Quick Research/Development Thread Directory

Mechanics Research

• [GS] Preventing the Legendary Birds from fleeing
• [RS] Editing the Hoenn Pokédex order
• [RS] Editing Battle Tower opponents
• [EM] Editing the Hoenn Pokédex order
• [EM] Swarm structures
• [EM] Secret base decorations structure
• [EM] Enabling the Mach Bike's speed for default walking
• [EM] Changing the flag required for Surfing on the over world [Part 1] [Part 2]
• [EM] Frontier Brain info and Battle Pyramid wild spawns
• [EM] Battle Tower Pokémon exclusion list location
• [EM] Battle Pike wilds structure
• [EM] Script executed when the player enters a Trainer event's view radius
• [EM] Steven's Double Battle team structure
• [FR] Making HMs deleteable
• [FR] Enabling automatic running without the use of the B Button
• [FR] Location of the badge-check for Surf and Waterfall
• [FR] Making the "Seen" amount of your Pokédex displayed in the continue screen and the save screen instead of the caught numbers
• [FR] Removing the introduction part of the New Game function
• [FR] Skipping parts of the introduction
• [FR] Changing the Level at which Eggs hatch [EM 1] [EM 2]
• [FR] Extend the limit to the seen/caught text and extending the number of Pokemon that will be correctly featured in the habitat pages
• [FR] Information on the Secret Key
• [FR] Removing the flag-check for the Running Shoes
• [FR] Removing the flag-checks for all HMs from the POKéMON menu
• [FR] Preventing Safari Zone Pokémon from fleeing [RS]
• [EM] Reusable TMs
• [FR] Changing the level of the Ghost Marowak
• [FR] The Pickup ability's item table structure [EM]
• [FR] Egg group information
• [FR] Implementing the X/Y-styled experience gain after capturing wild Pokémon [Part 1] [Part 2] [EM]
• [FR] Enabling the player to run off of ledges
• [FR] [EM] [RS] Enabling bicycle-riding in maps
• [FR] [EM] [RS] Changing the Pokémon the Professor releases during the introduction speech
• [FR] [EM] [RS] Information on the wild Pokémon structures
• [FR] [EM] [RS] Enabling support for extended Pokémon in the wild for AdvanceMap 1.9.2 [Part 1] [Part 2]
• [FR] [EM] [RS] Research into the altitude of Person events in maps
• [FR] [EM] [RS] Dynamic offsets for the TM / HM Compatibility Table

Scripting Research

• [RS] "The battle script associated with both Birch's whining as well as the 'Can't Escape!' message"
• [EM] Location of the Surf behavior byte's script
• [EM] A way to checkpokemon in your party for events [Part 1] [Part 2]
• [EM] A tag battle script
• [EM] List of Variables
• [EM] List of Specials [Part 1] [Part 2] [Part 3] [Part 4] [Part 5] [Part 6]
• [EM] Egg-hatching script
• [FR] [EM] [RS] Translating Trainer flags to regular flags
• [FR] The first script executed
• [FR] Loading the White Out cutscene [Part 1] [Part 2]
• [FR] Explanation of cmd9C (doanimation) command
• [FR] Exploring the Coin Case
• [FR] Displaying a secondary message box with header text and body text
• [FR] An overview of the use of flags and variables in a vanilla ROM
• [FR] "Interesting quirks about some FireRed scripting commands"
• [FR] Exploration of cmda6 [Part 1] [Part 2]
• [FR] Naming the player from the over world
• [FR] applymovement values [EM]
• [FR] callasm battle script function and battle string function
• [FR] FireRed scripting engine wiki
• [FR] Identifying the setmapfooter footer byte
• [FR] Locating the player's current amount of money
• [EM] Enable a different fanfare for obtaining Key Items
• [FR] Location of the script that executes after whiting out [Part 1] [Part 2]
• [FR] [EM] [RS] Adding black bars to the top and bottom of the screen [Part 1] [Part 2]
• [FR] Enabling greyscale or sepia overlays [Part 1] [Part 2]
• [FR] [EM] [RS] Special table
• [FR] Mystery Gift information
• [FR] [EM] List of used flags
• [FR] RAM locations of the opponent Pokémon's primary and secondary type
• [FR] Scripts executed after exiting the second floor of Pokémon Centers for the Colosseum room or Trade room
• [FR] A script that alerts the player when eggs have been spawned by Pokémon in the Day-care Center
• [FR] A script that will allow you to choose how many Pokemon you need to have registered in order to receive a diploma
• [FR] [EM] [RS] Information on the playsong2 command
• [FR] [EM] [RS] Information on cry command [Part 1] [Part 2] [Part 3]
• [FR] [EM] [RS] Information on the movement byte 0x69
• [FR] Information on changing the start menu [Part 1] [Part 2]
• [FR] Removing Prof. Oak's text from trainerbattle 0x9
• [FR] Information on the textcolor command
• [FR] Information on the 0x9F byte for applymovement
• [FR] [EM] Check / Count a Specific Pokémon Species in the Party

Graphics Research

• [RS] [FR] Limiters for the over world amount
• [EM] Document of all LZ77-compressed data
• [EM] Location of the type icon chart
• [EM] Location of the battle animation background table
• [FR] Animation location for arrows in the Bag
• [FR] Changing the duration of the title screen
• [FR] Making the title screen last forever
• [FR] Location of a table that dictates the "type" / gender of a Person event
• [FR] Snow weather animation location
• [FR] Editing PC Boxes
• [FR] Location of Transform's animation
• [FR] Naming the Rival from the over world
• [FR] Offsets for the Pokédex's Heads-up Display / HUD
• [FR] Location of the palette for the player's reflection
• [FR] Town Map route / city dimensions offsets
• [FR] Information of the table that controls the position of various elements during the item-use animation
• [FR] Trainer Card tileset, tilemap and palette locations
• [FR] Information on changing the start menu
• [FR] [EM] [RS] Block editing via hex editors
• [FR] Changing the color filter used by flashbacks
• [FR] Information on the generateOAM function [Part 1] [Part 2] [Part 3]
• [FR] Changing text boxes
• [FR] Information on adding more eye catches
• [FR] Location of the amorphous blob the player surfs on's sprites
• [FR] Changing the default text color / gender for Person events
• [DP] List of Material IDs and Polygon IDs

Audio Research

• [EM] Identifying Voice Groups
• [FR] [EM] [RS] Info on songs and fanfares
• [B2W2] Converting MIDI files to .SSEQ files
• [FR] [EM] [RS] Extending the Number of DirectSound Tracks [Part 1] [Part 2]
• [FR] Track number of the Low HP sound [EM]
• [FR] Changing the Level-Up fanfare
• [FR] [EM] [RS] Format of the song table
• [FR] [EM] [RS] Removing modulation from .s files [Part 1] [Part 2] [Part 3]

Other

• [FR] [EM] JPAN's Save Variable Patch
• [FR] [EM] [RS] Clearing 0x1000 bytes in the RAM
• [EM] Various cheat codes
• [FR] The purpose of 0x0203C000
• [FR] Location of "S" when obtaining multiple items
• [FR] Controlling other Person events in a map
• [FR] Player control RAM structure(s)
• [FR] Pokédex Habitat data structure(s)
• [FR] RAM addresses that store the map bank, map number, and the player's current X and Y co-ordinates [Part 1] [Part 2]
• [FR] The limit of script recursion [Part 1] [Part 2]
• [FR] RAM locations that control screen refreshing
• [FR] Person data structure
• [FR] "Offsets for some scripts that people may find interesting"
• [FR] Information on the RAM location starting at 0x0203F3C0
• [FR] Location of obedience checks
• [FR] The starting position of the player in a new game
• [FR] Step counter location in the RAM
• [FR] "Wait-for-interrupt" loop patch
• [FR] Location of the battle menu's text (FIGHT / BAG / PKMN / RUN)
• [FR] DMA Negation
• [FR] RAM location of the player's money
• [FR] Locations of the default names for the player
• [FR] RAM locations of the player's X and Y co-ordinates
• [DP] "Some rather interesting things"
• [DP] Sinnoh Pokédex numbers location
• [DP] A tool to convert offsets to paths
• [PMD] Saving cheat code
• [PMD] Research into .bpc files
• [OTHER] knizz's HTML-only BL Finder tool port
• [OTHER] Porting C files to ASM
• [OTHER] knizz's online database
• [OTHER] A Python script for debugging a map

Key:

[FR] - FireRed / LeafGreen (usually just FireRed)
[EM] - Emerald
[RS] - Ruby / Sapphire (usually just Ruby)
[OTHER] - Not necessarily specific to ROMs
[PMD] - Pokémon Mystery Dungeon (not necessarily the same versions)
[Part #] - Links to other posts that expand upon or correct the first part

=======================

I did change a few formatting things so that the links aren't coloured black, to maintain compatibility with PC's darker styles, and to make it more obvious that they are clickable links, and I removed the usernames as they're on the posts anyway and it may become inconsistent if and when certain users get name changes, as well as for simplicity's sake when adding to the index. I also made it so that the links don't go directly to the post but to the post's position in the thread so that any collateral information in replies / previous posts are in the user's view when going back to these posts.

=======================

The list is now finished and sorted by games! I also added an Audio section as I feel there is enough for it to be justified.

Here's a raw version of the index with formatting and everything in case something happens to this post / if you want to add it to the OP / etc.

If there are any inaccurate or vague headings you think should be renamed please do call me out.

Note that I have stopped updating this post, please just refer to the OP now.

 

[DJTiki]

Does anyone have any idea, if how you would go about skipping Oak's Speech in FRLG, and instead replace it with a script? Or if it is possible, change where the Title Screen takes you, by changing the pointer of the titlescreen to a script offset?

EDIT: I realized I'll need to implement custom C, to do this, so disregard this.