Decomp & Disassembly Tutorials
Simple Modifications Directory
Started by Hiroshi Sotomura December 30th, 2018 2:48 PM- 223279 views
- 464 replies
Editing Player PC Items
To change the items the player has in their PC at the start of the game, open “src\player_pc.c” in Notepad++ and find the following:
Ctrl+F "POTION" to locate it quickly. It's self-explanatory - on the left you have the item and on the right you have the amount. Just make sure you don't accidentally overwrite the “{ ITEM_NONE, 0 }” line. For example, if I wanted my player to have five Sitrus Berries and three Lum Berries in their PC at the beginning of the game, I'd have:
A list of items can be found in “include\constants\items.h”
Modifying Starter Pokémon
To change the three starters in less than 30 seconds, open “src\starter_choose.c” in Notepad++ and Ctrl+F "TREECKO" to find the following section quickly:
You've probably guessed what to do already - just change the species names. If you wanted the Johto starters, you could have:
Compile and you're all set.
Changing the Beginning Amount of Money
For Pokéemerald, open “src\new_game.c” and look for this line:
SetMoney(&gSaveBlock1Ptr->money, 3000);All there is to do is change that amount (3000) to whatever you like. For Pokéruby, it's the same file but this line:
gSaveBlock1.money = 3000;
Editing Default Options Settings
If you open “src\new_game.c” you'll come across this:
These are the attributes you can change from the "Options" window in the start menu - text speed, the menu frame, battle style (set/shift) etc. Having the text speed automatically set to fast is something I'd recommend to everyone, since going straight to the options menu and changing it is one of the first things a lot of people do in-game!
Changing Birch's Intro Pokémon
Open “src\main_menu.c” and Ctrl+F for “SPECIES_LOTAD”. Modify the following lines to change the sprite and cry:
The Pokémon species list is in “include\constants\species.h”. For Pokéruby, substitute the instances of “SPECIES_LOTAD” for “SPECIES_AZURILL”. I've changed it to Trapinch, for example:
Reusable TMs
To make TMs reusable open "src/party_menu.c" and search for the sub_81B6EB4 function.
In it delete the lines
if (item < ITEM_HM01_CUT)
RemoveBagItem(item, 1);If you also want to make TMs unholdable and remove the number from the bag saying how many of each TM you have open "src/data/items.h" and change the .importance number of each TM item from 0 to 1.
Modifying the Start Location
Open “src\new_game.c”and look for the following section:
static void WarpToTruck(void)
{
SetWarpDestination(MAP_GROUP(INSIDE_OF_TRUCK), MAP_NUM(INSIDE_OF_TRUCK), -1, -1, -1);
WarpIntoMap();
}The line in red is the one we want to make changes to as you could probably already tell. It's self explanatory so it shouldn't need very much breaking down. For instance, let's say we wanted the start map to be Oldale Town. We would have:SetWarpDestination(MAP_GROUP(OLDALE_TOWN), MAP_NUM(OLDALE_TOWN), -1, 6, 18);The above will have the player start in Oldale Town, specifically outside the Pokémon Center. -1 is used for no warp ID, 6, 18 are co-ordinates. Something different, say you wanted the player to start off in the middle of May's room:
SetWarpDestination(MAP_GROUP(LITTLEROOT_TOWN_MAYS_HOUSE_2F), MAP_NUM(LITTLEROOT_TOWN_MAYS_HOUSE_2F), -1, -1, -1);Using “-1, -1, -1” as the default does will place the player in the center of the map. That's it!
Oh and to remove the truck animation, again you only have to tweak a single line, this time in “src\overworld.c”:
// gFieldCallback = ExecuteTruckSequence;
ROM Hacking
‣ XSE Scripting Tutorial
‣ How To Index Images
‣ Doors & Other Animations
‣ NPC Text Generator
Pokéemerald
‣ Basic Scripting Guide
‣ How To Insert Sprites
‣ Battle Backgrounds
‣ Battle Transitions
‣ XSE Scripting Tutorial
‣ How To Index Images
‣ Doors & Other Animations
‣ NPC Text Generator
Pokéemerald
‣ Basic Scripting Guide
‣ How To Insert Sprites
‣ Battle Backgrounds
‣ Battle Transitions
BW Repel
Whenever the Repel's effect wears off, a prompt will appear asking player if they wish to use another one. Similarly to my old pre-decomp implementation, this one also lets you choose which Repel(Regular, Super, Max) to use. Obviously, if you have only one kind, this part is skipped.
Now
Screenshots:
I also have the code in my github branch called repel, so you can pull directly from it.
Whenever the Repel's effect wears off, a prompt will appear asking player if they wish to use another one. Similarly to my old pre-decomp implementation, this one also lets you choose which Repel(Regular, Super, Max) to use. Obviously, if you have only one kind, this part is skipped.
src/script_menu.c DrawMultichoiceMenuI modified the function, so it works with custom menu options, in ours case Repels ones. Change that part to:
Spoiler:
Now
data/scripts/repel.inc
Spoiler:
Screenshots:
Spoiler:
I also have the code in my github branch called repel, so you can pull directly from it.
Money Limit
Screenshots:
I also have the code in my github branch called money, so you can pull directly from it.
Spoiler:
Screenshots:
Spoiler:
I also have the code in my github branch called money, so you can pull directly from it.
-Snip-
I'm not entirely sure if I'm going OffTopic here, but while this implementation works perfectly on itself, it introduces one issue.You can teach a TM to a pokémon, and the PPs for that move slot will refill as the pokémon learns a new move.
This kinda removes the necessity of healing when/if you run out of PPs in some of all of your moves.
ON: Since we're talking about quick modifications, I have to give some love to my favourite ability.
Modifying the table of items of the Pickup ability (Em)
(outside of the Battle Pyramid)
To do this, we're going to open the src\battle_script_commands.c file.
Next, we'll take a look at the sPickupItems variable in the Line 824.
What it contains is a list of the items the Player can obtain with a 4%, 10% or 30% chances every time they faint a pokémon, if a Pickup user is in their party.
Right after it, we have the variable sRarePickupItems, which similarly, also contains a list of items.
These are the items that the Player has a 1% chance of obtaining, every time they faint a pokémon, if a Pickup user is in their party.
To modify any of these lists, you simply have to swap the defined item/s that you want to replace with a different one of your liking, save and compile.
Here's a quick video, where I replaced all the common items (those in the 1st list) with Master Balls.
I haven't looked into the separate table used for the Battle Pyramid, so I won't go into details with that one, but it looks fairly simple.
Any curious people can find them (Lv50 and Open) starting from the Line 317 of the
Modifying the table of items of the Pickup ability (Em)
(outside of the Battle Pyramid)
To do this, we're going to open the src\battle_script_commands.c file.
Next, we'll take a look at the sPickupItems variable in the Line 824.
What it contains is a list of the items the Player can obtain with a 4%, 10% or 30% chances every time they faint a pokémon, if a Pickup user is in their party.
Right after it, we have the variable sRarePickupItems, which similarly, also contains a list of items.
These are the items that the Player has a 1% chance of obtaining, every time they faint a pokémon, if a Pickup user is in their party.
To modify any of these lists, you simply have to swap the defined item/s that you want to replace with a different one of your liking, save and compile.
Here's a quick video, where I replaced all the common items (those in the 1st list) with Master Balls.
I haven't looked into the separate table used for the Battle Pyramid, so I won't go into details with that one, but it looks fairly simple.
Any curious people can find them (Lv50 and Open) starting from the Line 317 of the
src/battle_pyramid.cfile.
Scrolling Multichoices In Scripts
I was asked to implement this, so here it goes. Just so you know, scrolling lists are already coded in, they're called list menus in pokeemerald. Check out list_menu.h and list_menu.c.
I also have the code in my github branch called script_multichoice, so you can pull directly from it.
I was asked to implement this, so here it goes. Just so you know, scrolling lists are already coded in, they're called list menus in pokeemerald. Check out list_menu.h and list_menu.c.
Spoiler:
I also have the code in my github branch called script_multichoice, so you can pull directly from it.
Running Indoors (EM)
Simply remove the following from /src/bike.c and you should be able to use your running shoes inside any building.
Inside the file search for:
bool32 IsRunningDisallowed(u8 metatile)and delete the following:
!(gMapHeader.flags & MAP_ALLOW_RUNNING) ||Thats it, now you should be good to go (or run in this case).
CREDIT:
None needed
PokedexPlus with a HGSS style
Running Indoors
Omnidirectional Jumping using a flag
Fast! nurse joy in PokeCenter
Ingame trade with yourself (Trade evolutions)
DS-Style party screen (2 versions)
Fully functional debug menu with Flags, Vars, Items, Pokemon and more!
Improved scrolling options menu
TM Case ported from FR and custom one!
Only change nicknames of self caught mons!
Register items in a list menu!
OUTDATED Surviving poison outside of battle with 1hp
This no longer works, but Lunos has found a fix further down - go check it out!
With just a few steps your pokemon should survive poison on the overworld now with 1hp, like in later gens.
Open the file /src/field_poison.c
Spoiler:
Next open /data/event_scripts.s and add the following to the end of the file:
Spoiler:
Thats it, everything should be done.
Skipping the poochyena battle after choosing the starter (pokéemerald)
You can skip the poochyena battle started by the script command "special ChooseStarter" by modifying a few lines in src/battle_setup.c.
In the CB2_GiveStarter function
In the CB2_StartFirstBattle function
This modification also adds a graceful transition (a simple fade) to the overworld to avoid glitches. I didn't extensively test this, however since it only affects functions which are used once in the entire game, it should not have any unexpected side-effects.
You can skip the poochyena battle started by the script command "special ChooseStarter" by modifying a few lines in src/battle_setup.c.
In the CB2_GiveStarter function
Spoiler:
In the CB2_StartFirstBattle function
Spoiler:
This modification also adds a graceful transition (a simple fade) to the overworld to avoid glitches. I didn't extensively test this, however since it only affects functions which are used once in the entire game, it should not have any unexpected side-effects.
How to force the Battle style [Set|Shift] [EM]
This guide is for you when you want to force the player to play in set or shiftmode. For either the enteire game or just during important matches. ex: Always switch except during gyms matches were you force set.
Old tutorial:
Edit: I made a small repository for merging here.
To change this style change the gSaveBlock2Ptr->optionsBattleStyle.
This guide is for you when you want to force the player to play in set or shiftmode. For either the enteire game or just during important matches. ex: Always switch except during gyms matches were you force set.
Old tutorial:
Spoiler:
Edit: I made a small repository for merging here.
To change this style change the gSaveBlock2Ptr->optionsBattleStyle.
Emerald master race
Have PokeBalls loading unique images [EM]
While, I was making my DS-Styled Balls for my Hack I noticed that some Balls loaded same 3rd animation image and only their palette was unique. This modification is for those who have their PokeBalls having different image.
Go to src/pokeball.c and go to function LoadBallGfx. You will find a switch case which would be similar to this
Spoiler:
Just add your own entries by adding
case BALL_OUR_OWN_BALL:Save and compile and you are good to go.
Remove badge boosts
Modern Pokemon games have done away with badge boosts and instead have the minimum level for obedience increase with every badge you acquire.
Ruby
First, open calculate_base_damage.c and edit the function CalculateBaseDamage by removing the BADGE_BOOST macro and the four lines where it's used.
#define BADGE_BOOST(badge, stat, bank) ({ \
if (!(gBattleTypeFlags & (BATTLE_TYPE_LINK | BATTLE_TYPE_BATTLE_TOWER | BATTLE_TYPE_EREADER_TRAINER))) \
{ \
if ((gBattleTypeFlags & BATTLE_TYPE_TRAINER) \
&& gTrainerBattleOpponent != SECRET_BASE_OPPONENT \
&& FlagGet(FLAG_BADGE0##badge##_GET) \
&& GetBattlerSide(bank) == B_SIDE_PLAYER) \
(stat) = (110 * (stat)) / 100; \
} \
}) BADGE_BOOST(1, attack, bankAtk);
BADGE_BOOST(5, defense, bankDef);
BADGE_BOOST(7, spAttack, bankAtk);
BADGE_BOOST(7, spDefense, bankDef);Next, open battle_2.c and edit the function GetWhoStrikesFirst by removing these two blocks of code. // Only give badge speed boost to the player's mon.
if (!(gBattleTypeFlags & BATTLE_TYPE_LINK) && FlagGet(FLAG_BADGE03_GET) && GetBattlerSide(bank1) == 0)
bank1AdjustedSpeed = (bank1AdjustedSpeed * 110) / 100; // Only give badge speed boost to the player's mon.
if (!(gBattleTypeFlags & BATTLE_TYPE_LINK) && FlagGet(FLAG_BADGE03_GET) && GetBattlerSide(bank2) == 0)
{
bank2AdjustedSpeed = (bank2AdjustedSpeed * 110) / 100;
}Finally, open battle_util.c and edit the function IsMonDisobedient. You should be able to find this section of code. if (FlagGet(FLAG_BADGE02_GET))
obedienceLevel = 30;
if (FlagGet(FLAG_BADGE04_GET))
obedienceLevel = 50;
if (FlagGet(FLAG_BADGE06_GET))
obedienceLevel = 70;How badge boosts correspond to increases in the minimum obedience level is up to you. As an example, here's how obedience works in Omega Ruby/Alpha Sapphire, Gen 7 and the Let's Go games. (For X/Y-style obedience, increase all these values by 10.) if (FlagGet(FLAG_BADGE01_GET))
obedienceLevel = 20;
if (FlagGet(FLAG_BADGE02_GET))
obedienceLevel = 30;
if (FlagGet(FLAG_BADGE03_GET))
obedienceLevel = 40;
if (FlagGet(FLAG_BADGE04_GET))
obedienceLevel = 50;
if (FlagGet(FLAG_BADGE05_GET))
obedienceLevel = 60;
if (FlagGet(FLAG_BADGE06_GET))
obedienceLevel = 70;
if (FlagGet(FLAG_BADGE07_GET))
obedienceLevel = 80;Emerald
First, open pokemon.c and edit the function CalculateBaseDamage by removing the ShouldGetBadgeBoost function and the eight lines of code that use it.
static bool8 ShouldGetStatBadgeBoost(u16 flagId, u8 battlerId);
if (ShouldGetStatBadgeBoost(FLAG_BADGE01_GET, battlerIdAtk))
attack = (110 * attack) / 100;
if (ShouldGetStatBadgeBoost(FLAG_BADGE05_GET, battlerIdDef))
defense = (110 * defense) / 100;
if (ShouldGetStatBadgeBoost(FLAG_BADGE07_GET, battlerIdAtk))
spAttack = (110 * spAttack) / 100;
if (ShouldGetStatBadgeBoost(FLAG_BADGE07_GET, battlerIdDef))
spDefense = (110 * spDefense) / 100;static bool8 ShouldGetStatBadgeBoost(u16 badgeFlag, u8 battlerId)
{
if (gBattleTypeFlags & (BATTLE_TYPE_LINK | BATTLE_TYPE_EREADER_TRAINER | BATTLE_TYPE_x2000000 | BATTLE_TYPE_FRONTIER))
return FALSE;
else if (GetBattlerSide(battlerId) != B_SIDE_PLAYER)
return FALSE;
else if (gBattleTypeFlags & BATTLE_TYPE_TRAINER && gTrainerBattleOpponent_A == TRAINER_SECRET_BASE)
return FALSE;
else if (FlagGet(badgeFlag))
return TRUE;
else
return FALSE;
}Next, open battle_main.c and edit the function GetWhoStrikesFirst. There are two blocks of seven lines of code with the comment "badge boost"; remove them. // badge boost
if (!(gBattleTypeFlags & (BATTLE_TYPE_LINK | BATTLE_TYPE_x2000000 | BATTLE_TYPE_FRONTIER))
&& FlagGet(FLAG_BADGE03_GET)
&& GetBattlerSide(battler1) == B_SIDE_PLAYER)
{
speedBattler1 = (speedBattler1 * 110) / 100;
} // badge boost
if (!(gBattleTypeFlags & (BATTLE_TYPE_LINK | BATTLE_TYPE_x2000000 | BATTLE_TYPE_FRONTIER))
&& FlagGet(FLAG_BADGE03_GET)
&& GetBattlerSide(battler2) == B_SIDE_PLAYER)
{
speedBattler2 = (speedBattler2 * 110) / 100;
}Finally, open battle_util.c and edit the function IsMonDisobedient. You should be able to find this section of code. if (FlagGet(FLAG_BADGE02_GET))
obedienceLevel = 30;
if (FlagGet(FLAG_BADGE04_GET))
obedienceLevel = 50;
if (FlagGet(FLAG_BADGE06_GET))
obedienceLevel = 70;How badge boosts correspond to increases in the minimum obedience level is up to you. As an example, here's how obedience works in Omega Ruby/Alpha Sapphire, Gen 7 and the Let's Go games. (For X/Y-style obedience, increase all these values by 10.) if (FlagGet(FLAG_BADGE01_GET))
obedienceLevel = 20;
if (FlagGet(FLAG_BADGE02_GET))
obedienceLevel = 30;
if (FlagGet(FLAG_BADGE03_GET))
obedienceLevel = 40;
if (FlagGet(FLAG_BADGE04_GET))
obedienceLevel = 50;
if (FlagGet(FLAG_BADGE05_GET))
obedienceLevel = 60;
if (FlagGet(FLAG_BADGE06_GET))
obedienceLevel = 70;
if (FlagGet(FLAG_BADGE07_GET))
obedienceLevel = 80;
The rival in Red and Blue is called Green. Gary is some character from a lame cartoon.
Change the limbo slots' hardcoded Unown cry
First, open the file pokemon_3.c (Ruby)/pokemon.c (Emerald) and find the function SpeciesToCryId. Remove the two if statements and alter the final line such that the function looks like this.
u16 SpeciesToCryId(u16 species)
{
return gSpeciesIdToCryId[species];
}Now extend the list gSpeciesIdToCryId in cry_ids.h to include BULBASAUR through OLD_UNOWN_Z. To replicate the vanilla experience the first 251 entries (Bulbasaur through Celebi) should be the National Pokédex number of that Pokémon minus one; after that are 26 copies of the value 200 for the limbo slots.
The rival in Red and Blue is called Green. Gary is some character from a lame cartoon.
Nature-affected stats colouring
I used the color red with light and dark shade to signify stat affected negatively and positively respectively. If you wish to use different colors, just modify the sTextNatureDown and sTextNatureUp strings, more specifically the byte value after {COLOR} special character.
Screenshot:
I also have the code in my github branch called nature_color, so you can pull directly from it.
I used the color red with light and dark shade to signify stat affected negatively and positively respectively. If you wish to use different colors, just modify the sTextNatureDown and sTextNatureUp strings, more specifically the byte value after {COLOR} special character.
src/pokemon_summary_screen.cChanges include functions in range BufferLeftColumnStats - BufferRightColumnStats.
Spoiler:
Screenshot:
Spoiler:
I also have the code in my github branch called nature_color, so you can pull directly from it.
Removing Badge Checks for HMs
As it says, it's just a quick way to disable badge checks so HM moves can be used without gym badges. For now, I've only commented out the code in case I need to undo it later, however, you could simply delete the commented code if you wished.
In:
In:
And finally, in:
As it says, it's just a quick way to disable badge checks so HM moves can be used without gym badges. For now, I've only commented out the code in case I need to undo it later, however, you could simply delete the commented code if you wished.
In:
src/field_control_Avatar.c
Spoiler:
In:
data\scripts\field_move_scripts.inc
Spoiler:
And finally, in:
src\party_menu.c
Spoiler:
Trainer Class-Based Poké Balls (Emerald)
Trainers in the gen VII games send out their Pokemon in different balls depending what class they are, so I've implemented that in Emerald.First, go to include\battle_main.h and add a new struct like so:
struct TrainerBall
{
u8 classId;
u8 Ball; // make this a u16 if needed
};Then add a table of these to src\battle_main.c:Spoiler:
Finally, add the code in bold to the end of the first for loop in the function CreateNPCTrainerParty, which is also in src\battle_main.c, like so:
Spoiler:
My Hacks:
XY: Eternal X & Wilting Y | USUM: Photonic Sun & Prismatic Moon | Emerald: Inclement Emerald
Resources:
Platinum decapitalisation patch/files
XY: Eternal X & Wilting Y | USUM: Photonic Sun & Prismatic Moon | Emerald: Inclement Emerald
Resources:
Platinum decapitalisation patch/files
BUGGED: Evolution Moves (Emerald)
NOTE: I've just found a nasty bug with this: if a Pokemon tries to learn a move it already knows while evolving, the game will freeze. I haven't been able to find the cause, so I'd recommend using the implementation posted by Lunos instead.
In the gen VII games many Pokemon have level up moves that they learn upon evolving, regardless of what level they are. This is a fantastic addition because it means Pokemon like Feebas don't stay useless if they evolve a level too late to learn their first damaging move.
To implement this in Emerald, first open include/pokemon.h and add an extra input argument to the function "MonTryLearningNewMove":
u16 MonTryLearningNewMove(struct Pokemon *mon, bool8 firstMove, bool8 isEvolving);Next, modify all code that calls this function to include a third input argument. There are two instances in src/evolution_scene.c where this should be set to "1", like so:
var = MonTryLearningNewMove(mon, gTasks[taskID].tLearnsFirstMove, 1);All other instances should be set to "0". These can be found in src/party_menu.c, src/battle_script_commands.c, and src/daycare.c.
Following that, open pokemon.c and navigate to the function "MonTryLearningNewMove". Replace it with the following:
Spoiler:
Finally, add some evolution moves to src\data\pokemon\level_up_learnsets.h. These must be the first entries in each Pokemon's list, and must be learned at level zero e.g.
Spoiler:
My Hacks:
XY: Eternal X & Wilting Y | USUM: Photonic Sun & Prismatic Moon | Emerald: Inclement Emerald
Resources:
Platinum decapitalisation patch/files
XY: Eternal X & Wilting Y | USUM: Photonic Sun & Prismatic Moon | Emerald: Inclement Emerald
Resources:
Platinum decapitalisation patch/files
Trainer Pokemon Individual Poké Balls (Emerald)
After being inspired by Buffel Saft - Trainer Class-Based Poké Balls (Emerald) I wanted to do the same but with a different aproach. Where every Trainers Poké Ball can optionally be changed in src/data/trainer_parties.h.
In src/data/trainer_parties.h.
Than still in include/battle.h, add these 2 lines at the top.
Than in src/battle_main.c go to CreateNPCTrainerParty
Result
After being inspired by Buffel Saft - Trainer Class-Based Poké Balls (Emerald) I wanted to do the same but with a different aproach. Where every Trainers Poké Ball can optionally be changed in src/data/trainer_parties.h.
const struct TrainerMonNoItemDefaultMoves gTrainerParty_May7[] = {
{
.iv_ball = ((ITEM_ULTRA_BALL << 8) | 0),
.lvl = 5,
.species = SPECIES_DEOXYS,
}
};I noticed the .iv propperty is stored in an u16 and never exceeds 255 wich leaves the 8 upper bits unused (for as far as I know). So I used the 8 upper bits for a ball.In src/data/trainer_parties.h.
Spoiler:
Than still in include/battle.h, add these 2 lines at the top.
Spoiler:
Than in src/battle_main.c go to CreateNPCTrainerParty
Spoiler:
Result
Gen. 6 styled Exp. Share (Em)
Blurose implemented this mechanic from the newer pokémon games on Pokeruby sometime ago.
Today, I took some time to port his version to Pokeemerald.
To add it to your project, you just need to track my repository via
For battle_engine users:
EDIT (07/03/2019):
It has been brought to my attention by Discord user Lightbox that a label was changed, and since I deleted the branch where I pushed the commit I linked here originally, I decided to grab a clean copy of Pokeemerald and make a branch specifically for this feature.
I already modified the link to the commit above and it's ready to go.
EDIT (06/12/2020):
It has been brought to my attention by Jaizu that the value of gSaveBlock2Ptr->expShare wasn't being reset upon starting a New Game, which means that if you turned on the Exp. Share, saved the game, started a New Game and tried to use the Exp. Share, it would still be considered by the game as being enabled. I fixed that in the latest commit that I pushed to the branch.
EDIT (10/06/2022):
I edited the post yet again, linking an alternative branch I made for battle_engine users, mostly because handling the changes to
If anyone spots any mistakes I may have made, please let me know.
Also, this branch varies quiet a bit from the other one, as I now use an unused flag to handle toggling the system On/Off instead of adding a whole new variable to the SaveBlock1 for it pointlessly.
Feel free to change which flag is used or whatever if you want or need to.
Blurose implemented this mechanic from the newer pokémon games on Pokeruby sometime ago.
Today, I took some time to port his version to Pokeemerald.
To add it to your project, you just need to track my repository via
git remoteand pull the branch where the code is.
For battle_engine users:
git remote add lunos https://github.com/LOuroboros/pokeemerald git pull lunos gen6_exp_share_BEFor vanilla Pokeemerald users:
git remote add lunos https://github.com/LOuroboros/pokeemerald git pull lunos gen6_exp_shareVideo:
EDIT (07/03/2019):
It has been brought to my attention by Discord user Lightbox that a label was changed, and since I deleted the branch where I pushed the commit I linked here originally, I decided to grab a clean copy of Pokeemerald and make a branch specifically for this feature.
I already modified the link to the commit above and it's ready to go.
EDIT (06/12/2020):
It has been brought to my attention by Jaizu that the value of gSaveBlock2Ptr->expShare wasn't being reset upon starting a New Game, which means that if you turned on the Exp. Share, saved the game, started a New Game and tried to use the Exp. Share, it would still be considered by the game as being enabled. I fixed that in the latest commit that I pushed to the branch.
EDIT (10/06/2022):
I edited the post yet again, linking an alternative branch I made for battle_engine users, mostly because handling the changes to
Cmd_getexpcan be daunting to newbies.
If anyone spots any mistakes I may have made, please let me know.
Also, this branch varies quiet a bit from the other one, as I now use an unused flag to handle toggling the system On/Off instead of adding a whole new variable to the SaveBlock1 for it pointlessly.
Feel free to change which flag is used or whatever if you want or need to.