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Decomp & Disassembly Tutorials icon

Decomp & Disassembly Tutorials

Get your start with tutorials and code snippets for your decompilation-based hacks including pokered, pokecrystal and pokeemerald.

Section Staff: Hiroshi Sotomura, Bloodless, 8-bit Zeta, Astrophel

Promoted

Bring Emerald to modern-day standards — Battle Engine Upgrade

Thread created February 4th, 2019

170

Promoted

Featured: Quest Menu

Thread created May 3rd, 2020

Promoted

Featured: Follow Me NPC code

Thread created March 18th, 2020

Promoted

PoryMap - map editor for Pokémon GBA decompilations

Thread created April 4th, 2018

Pokeemerald

Battle Engine Upgrade

(7 pages)

Tauric, May 3: I am not. I was testing if infinite TMs/replacable HMs were implemented when i noticed that i couldn't teach HMs to anything. I saw that. That's pretty far above my understanding though, so i just figured out a workaround that should work for...

170 68,420

Started by DizzyEgg

Simple Modifications Directory

(15 pages)

Lunos, Apr 30: Text shortcut to print a Pokémon's nickname Em] I did this as a workaround to a problem I was having. I decided to come and share it because why not. Text strings have access to buffers that allow you to store whatever you want in them, or that...

371 145,017

Started by Avara

PoryMap | Map Editor for the Disassembly and Decompilation Projects

(4 pages)

pahgawk3, Jan 26: Just checked and I had installed agbcc into my decomps folder, not the emerald one. I have fixed this and can now compile with map edits. Thanks for the help.

82 32,550

Started by Lunos

Poryscript | Scripting Language for the Decompilation Projects

ShantyTown, Feb 2021: What is Poryscript? Poryscript is an improved scripting language that can be used with pokeemerald, pokeruby, and pokefirered. It provides higher-level control with "if" statements, inline text, and much more. It's used by prominent projects...

0 4,922

Started by ShantyTown

Rules

Decomp & Disassembly Tutorials & Resources Forum Rules

Avara, Aug 2020: *Decomp & Disassembly Tutorials & Resources Forum Rules* Forum Rules This forum is bound by rules set in the global PokéCommunity Rules To make sure that things remain civil, and to make sure that everyone has an enjoyable time, we ask that, along...

0 3,595

Started by Avara

[Tutorial] How to build the Pokémon GBA decomps using WSL (Win10)

(4 pages)

Lunos, May 27: That's an interesting error. I don't think I had to go out of my way to install libssl. When you installed your Linux distro, did you remember to use sudo apt update && sudo apt upgrade? If not, I imagine that's the problem, as that updates...

86 24,061

Started by Lunos

Pokeemerald

Following Pokémon

(2 pages)

WiserVisor, May 26: I added this to the main post, but I figured it would be worth mentioning in its own post. For those of you using Porymap and the Pokémon Expansion, if you use some of the follower graphics as normal event objects, the sprite you see in Porymap...

45 5,798

Started by WiserVisor

Pokeemerald

Wild Pokémon Drop Held Items

Jaizu, May 24: Looks really cool, thanks for sharing!

1 137

Started by Agustin23

Pokeemerald

Customising e-Reader Cards

paccy, May 23: It's definitely possible to change the pokemon in altering cave since that depends on a single var value. The "official" event (none were actually released for this) goes through Mystery Gift but these cards work through Mystery Event. I don't know...

18 4,096

Started by paccy

Pokeemerald

Decomp Trainer Editor

(2 pages)

datoneguy, May 18: I’m curious if anyone else is running into this as well. The editor boots fine (v1.2.3) and runs perfectly for like one or two trainers. By the time I click to a third or fourth trainer, it acts odd. I can still edit the previous trainer and scroll...

28 9,626

Started by Disturbo

[Tutorial] How to build Pokeruby/Pokeemerald using devkitPro's MSys2

(2 pages)

Lunos, May 8: Lately, MSys2 has been giving weird errors about signature keys that couldn't be trusted or something. Using pacman -Sy msys2-keyring solves it, so I edited the main post accordingly.

39 20,191

Started by Lunos

Pokeemerald

DexNav (with Detector Mode!)

(2 pages)

retrogba, May 5: Hi Ghoul - when determining the size needed for the saveblock, how does this count pokemon? For example, I've pulled in the RHH Pokemon Expansion, but I only plan on having 400 mons in the dex (but leaving the rest in the code). Would it require 1...

29 9,429

Started by ghoulslash

Pokeemerald

RoamersPlus: multiple concurrent Roamers and other Roamer related features

DarkDown, Apr 28: Github branch: https://github.com/Sneed69/pokeemerald/tree/RoamersPlus IMPORTANT: If using the RHH expansion, my changes to src/battle_ai_script_commands.c instead go into src/battle_ai_main.c As most of you already know, in Pokemon Emerald,...

0 382

Started by DarkDown

Pokeemerald

Battle Timer System (Legends: Arceus Inspired)

marios92, Apr 25: Well, Quick attack (and alike moves) in LA increase user Speed +1 for 5 turns (like Reflect or Light Screen). For 3 or 8 turns if using Agile or Strong Style, but i think you aint looking forward for Style implementation, right? Anyway the standard...

3 479

Started by WiserVisor

Pokeemerald

PokedexPlus in HGSS style UPDATED

(2 pages)

Ammy175, Apr 24: Hi there. I'm also new to decomp, and I'm trying to implement this using the RHH as well. I followed the instructions in the first post to the best of my ability, and got some merge conflicts. A friend helped me out through those, but now when...

39 10,939

Started by TheXaman

[Win 10] How to setup decompilation with no effort

(2 pages)

HeavenlyArmed, Apr 22: This does seem to have resolved the issue, thank you!

25 7,004

Started by Inmortal

[TUTORIAL] Adding new map sections for name popups and region map

Jaykopp, Apr 9: Thanks, this was great! I was wondering, how does one change the mapgroup of a new map?

2 3,533

Started by Samug

Pokeemerald

Follow Me

(2 pages)

retrogba, Apr 8: Was anyone ever able to address some of these, like followers disappearing after using fly? I haven't had much success trying to create my own workaround.

38 11,931

Started by ghoulslash

Pokeemerald

Unique surfing overworlds

(2 pages)

retrogba, Mar 31: So I've implemented this with some updates to allow it to work on more recent builds of pokeemerald, but it seems the surfing pokemon is always the first slot from the party. Is this intended/known, or did I break something?

31 13,307

Started by slawter666

Pokeemerald

How To Add, Edit, And Understand Music in Pokeemerald

(2 pages)

WiserVisor, Mar 26: Thanks for pointing that out! I'll add that information to that section.

30 6,930

Started by WiserVisor

Pokeemerald

Let Enemy Trainers Use Revival Items Correctly

WiserVisor, Mar 10: Based on those pictures, you certainly did everything correctly. Like I said with Jessler, I've tested this code with a clean pokeemerald repository, and it works as described. The only way I could help you more is if I poked around your repository,...

11 1,587

Started by WiserVisor

Pokeemerald

Editing Battle Backgrounds

retrogba, Feb 21: Yeah, I posted this in the discord and didn't want to spam with the same question again, but it looks like it's based on a combo of metatile info from where the player is currently standing, combined with the map header. I wasn't quite sure if there...

9 7,067

Started by Avara

Pokeemerald

Ghoul's Expansion Branch

ghoulslash, Feb 20: It's tough to help with conflicts on pokecommunity, particularly this many - I suggest going to discord to help with individual ones that are especially tricky. Which scripts? you can find the IDs for new script commands in...

4 2,055

Started by ghoulslash

Pokeemerald

Animated RHH x Pret - Copyright intro

Diego Mertens, Feb 18: For me, that makes Porygon being on top of the pret logo instead of below And its weird, because it jumps just fine, but the point where it starts jumping is the issue

3 2,084

Started by Jaizu

Pokeemerald

Inserting Custom Sprites

plzhalp, Feb 13: That's what I suspected but I was unsure of how to troubleshoot effectively. Thank you!!

16 13,513

Started by Avara

Pokeemerald

Ruins of Alph Sliding Puzzles [+ pokefirered]

Jaizu, Feb 7: Hi, I went ahead and ported it to Pokefirered, you can add it to the main post if you want. Github link: https://github.com/Jaizu/pokefirered/tree/sliding_puzzles Some notes: It disables the help system when solving puzzles since you need L/R...

5 1,147

Started by Spherical Ice

Pokeemerald

Fully Decapitalized Pokefirered and Pokeemerald

Lunos, Jan 27: You need to link your GitHub account to your terminal in order to git pull. In other words, as the terminal tells you, you need to use git config --global user.email insert_your_email_here and git config --global user.name insert_your_username_here.

6 2,691

Started by Prof. Leon Dias

Pokeemerald

Battle Transitions Guide

tldr_coder, Jan 17: Thank you Lunos! Will search for that function when I get home. Btw, your set up guide for getting up and running with decomps was pivotal to get me started, and the "How to start a project using DizzyEgg's works" guide helped a ton as well......

9 4,694

Started by Avara

[TUTORIAL] Set Trainer's Pokémon's Levels dynamically

Lunos, Jan 12: I'll proceed to quote my post from another thread: Note: Naturally, in this case, you'll want to put the declaration in src/battle_main.c because that's where you're invoking gEvolutionTable here.

15 7,501

Started by Diego Mertens

Pokeemerald

How to start a project using DizzyEgg's works

(8 pages)

Lunos, Dec 28: I've updated the main post yet again to address the new conflicts. I also posted a copy of the main post in GitHub Gist. That way any changes to the contents of the post can be checked at a glance, using the Revisions tab,...

175 37,221

Started by Lunos

Pokecrystal

[Tutorial] How to build Pokered or Pokecrystal using WSL

Lunos, Dec 24: Explained as simply as possible and straight to the point. You guys know me. The reason why I'm writing this is because I learned how to build rgbds from the source sometime ago and I never wrote a tutorial about that. Cygwin is lame compared to...

0 552

Started by Lunos

Pokeemerald

Remove having to reel in while Fishing

astupidnerd, Dec 9: I'm a bit late to the party, but to get this working with pokemon ruby, Fishing_ShowDots is Fishing5 and Fishing_GotBite is Fishing7. Aside from this, you also have to use Menu_PrintText instead of AddTextPrinterParameterized, so Fishing5 will...

5 1,925

Started by NobodySociety

Pokeemerald

Sideways Stairs

(2 pages)

Lunos, Dec 6: We talked about this through DMs on Discord, but I may as well mention it here so anyone else can benefit. The branch in which Ghoul is hosting this feature is closer to Pret in terms of updates than the branches from the Pokeemerald-expansion....

26 6,974

Started by ghoulslash

Decomp from scratch! Compiling our first ROM and configuring VSCode

Aljam, Dec 1: I was able to get my dev environment set up pretty easily sinc I run an arch based environment. It's actually a whole lot easier on linux to set it up compared to windows. VSCodium is a pretty good package since it's a port of vscode though that...

2 3,641

Started by Jaizu

Pokeemerald

Costume Menu

TrainerX493, Nov 30: Here's another "Overworld Expansion" branch here that is probably better (link showing the changes rather than just the branch itself): https://github.com/ghoulslash/pokeemerald/compare/master...ghoulslash:overworld-expansion The author of the...

15 10,687

Started by slawter666

Pokecrystal

[Tool] Polished Map 4.7.1 and 2.7.1++: a pokecrystal and pokered map editor

Lunos, Nov 22: Naturally, the program loads files, so yes, you can load your file, assuming you're not talking about a ROM file. Polished Map opens disassembly related files, so to open one of Pokémon Red's maps, you must choose the .blk file of said map, located...

16 21,223

Started by Rangi

Create a debug menu

Rappe, Nov 20: Is there a way to implement this for pokefirered? I imported all of the code to the same files and was able to get it to compile after some tweaking, but the debug menu won't open. The start menu just opens like normal.

9 5,489

Started by ThomasWinwood

[Tutorial] How to build Pokeruby/Pokeemerald using Cygwin (64 Bits)

(2 pages)

Lunos, Nov 19: I no longer consider Cygwin as a viable option to build the decomps. devkitPro has been broken for about a year on my end, so I can no longer recommend it, or anything that requires using it, such as the process to build the decomps. Windows 7 or...

29 12,244

Started by Lunos

Pokeemerald

FR styled Hoenn (kinda!)

Mattow, Nov 13: As a fan of FR/LG's style but Emerald having most of decomp docs and features, i love this

3 2,254

Started by Jaizu

Pokered

Basic Pokered/Pokeyellow info and tutorial links

darthbr, Nov 8: Awesome

2 986

Started by longlostsoldier

Pokeemerald

[TUTORIAL] Adding New Weather

Sonikku A, Oct 30: Ever grown tired of the same few weather effects? Wish some from Mystery Dungeon were implemented? Feeling devilish to bring back Gen 4 fog? Fortunately I've managed to figure how to add more weathers for battle effects. Special thanks to...

0 1,066

Started by Sonikku A

Pokeemerald

Guide to Editing the Region Map

Mahian23, Oct 28: Woah a map of Bangladesh!!!! Truly gorgeous.

6 2,746

Started by takyon

[Tool] DST - Install decomp with no effort

DarkMadman_69, Oct 27: Thank you for such an amazing tool. This tool just saved me from having to start over on my project

4 3,118

Started by Inmortal

Pokeemerald

[RESOURCE] NDS Music Expansion for Pokeemerald

CyanSMP64, Oct 25: Just updated the branches. There had been crash reports from players of Inclement Emerald, and it turns out I missed an important part of the upgraded mixer implementation so now there shouldn't be any crashes. Also added a new selection branch...

10 2,278

Started by CyanSMP64

Pokemon Emerald 80x80 Sprites

TrainerX493, Oct 13: Something I'm hoping to see from this is to have the this being toggable via a script. So you can use normal sprites for 99% of the game (so double battles and such aren't affected), but then have the 80x80 sprite for special boss battles. My...

7 4,004

Started by FroggestSpirit

Pokeemerald

Tutorial : How to implement X/Y Sky Battles

Martinii93, Sep 18: Hello Phlayne, I've been trying to use this tutorial but I'm running into two errors. I'm using one of the most recent rh-hideout pokeemerald builds . I get these errors: Battle_script_commands:

1 1,504

Started by Phlayne

Pokeemerald

"User Manual" for DizzyEggg's battle_engine_v2, pokemon_expansion, and item_expansion

Lunos, Sep 15: There's a feature that isn't documented anywhere else. May as well drop some info about it here. Trainer Slide-in Messages This feature originally introduced in Pokémon Platinum is present in the battle_engine branch. There's an array called...

1 6,445

Started by Ryuhouji

[FireRed] How To Edit The Intro Sprites

hjk321, Sep 5: In Emerald, the Intro Sprites are actually rather easy to edit. However, in FireRed, the process is much more involved, mostly because the sprites in question are not actually sprites, but considered part of the background. This causes some pros and...

0 723

Started by hjk321

Using Affine Animations

Anon822, Aug 30: Thank you for writing this guide. I recently looked into affine animations for the first time and this helped me to understand how they work. However, I think that the FRAME command could be explained in a simpler way and that the other commands...

1 3,892

Started by Inmortal

PokeFireRed how to easily add new types (Fairy)

Meister_anon~Master_o f_None, Aug 24: SmashLucario Yeah what Lunos said sounds right, I never looked into that but, I just want to add that while that is the physical/code limit, ( unless expanded -which isn't necessary) Someone adding a bunch of types may run into a more practical...

7 1,924

Started by Meister_anon~Master_o f_None

Pokeemerald

Fully editing an existing battle background

sickanddullandplain, Aug 15: It turns out - you can!

3 1,582

Started by Lunos

Pokeemerald

Scripting Tutorial

(3 pages)

Terrine, Aug 5: Oh right, I didn't think of checking the map of the inside of the truck ! Thank you very much !

61 30,872

Started by Avara

Pokeemerald

Custom Music/Sound Effect Database

hjk321, Jul 31: Interesting! Might give some of these a go.

3 1,602

Started by WiserVisor

Pokeemerald

How to Make Dynamic Music

WiserVisor, Jun 28: There are many pieces of music within video games, movies, and many other forms of media that are dynamic. When I write "dynamic", I mean that the music changes slightly based on the events that are occurring, whether that means when a character...

0 825

Started by WiserVisor

Soft EXP Level Caps

Jaizu, Jun 10: I do appreciate the tutorial but I do think this would fit better in a pokeemerald branch. It's easier to maintain and notice if there is any bugfix uploaded.

24 15,180

Started by PokemonCrazy

Forum Tools	Search this Forum
Mark This Forum Read View Parent Forum

Categories

Bring Emerald to modern-day standards — Battle Engine Upgrade

Featured: Quest Menu

Featured: Follow Me NPC code

PoryMap - map editor for Pokémon GBA decompilations

Battle Engine Upgrade

Simple Modifications Directory

PoryMap | Map Editor for the Disassembly and Decompilation Projects

Poryscript | Scripting Language for the Decompilation Projects

Decomp & Disassembly Tutorials & Resources Forum Rules

[Tutorial] How to build the Pokémon GBA decomps using WSL (Win10)

Following Pokémon

Wild Pokémon Drop Held Items

Customising e-Reader Cards

Decomp Trainer Editor

[Tutorial] How to build Pokeruby/Pokeemerald using devkitPro's MSys2

DexNav (with Detector Mode!)

RoamersPlus: multiple concurrent Roamers and other Roamer related features

Battle Timer System (Legends: Arceus Inspired)

PokedexPlus in HGSS style UPDATED

[Win 10] How to setup decompilation with no effort

[TUTORIAL] Adding new map sections for name popups and region map

Follow Me

Unique surfing overworlds

How To Add, Edit, And Understand Music in Pokeemerald

Let Enemy Trainers Use Revival Items Correctly

Editing Battle Backgrounds

Ghoul's Expansion Branch

Animated RHH x Pret - Copyright intro

Inserting Custom Sprites

Ruins of Alph Sliding Puzzles [+ pokefirered]

Fully Decapitalized Pokefirered and Pokeemerald

Battle Transitions Guide

[TUTORIAL] Set Trainer's Pokémon's Levels dynamically

How to start a project using DizzyEgg's works

[Tutorial] How to build Pokered or Pokecrystal using WSL

Remove having to reel in while Fishing

Sideways Stairs

Decomp from scratch! Compiling our first ROM and configuring VSCode

Costume Menu

[Tool] Polished Map 4.7.1 and 2.7.1++: a pokecrystal and pokered map editor

Create a debug menu

[Tutorial] How to build Pokeruby/Pokeemerald using Cygwin (64 Bits)

FR styled Hoenn (kinda!)

Basic Pokered/Pokeyellow info and tutorial links

[TUTORIAL] Adding New Weather

Guide to Editing the Region Map

[Tool] DST - Install decomp with no effort

[RESOURCE] NDS Music Expansion for Pokeemerald

Pokemon Emerald 80x80 Sprites

Tutorial : How to implement X/Y Sky Battles

"User Manual" for DizzyEggg's battle_engine_v2, pokemon_expansion, and item_expansion

[FireRed] How To Edit The Intro Sprites

Using Affine Animations

PokeFireRed how to easily add new types (Fairy)

Fully editing an existing battle background

Scripting Tutorial

Custom Music/Sound Effect Database

How to Make Dynamic Music

Soft EXP Level Caps