[Script] How To Write a "Trade Script"? (Advance Map/XSE)

[JustinCG2807]

Hello Community!

I started hacking Gen 3 games about a week ago. I already wrote many scripts. Some with the help of tutorials and some with the help of decompiling already existing offsets. Now I want to add a NPC in Pokémon Emerald who wants to Trade a Pokémon (I don't know which Pokémon to trade yet). I also decompiled an already existing offset of a NPC who wants to trade. But I don't know what exactly happens in this script. There are many setvar, copyvar and special commands. And I didn't see any numbers which specify the requested and given Pokémon...

Do anyone know how to write such a script? And can someone explain what all these commands cause?

 

[Team Embrace]

The trading scripts used by the game use assembly language (also called ASM) code to both verify you have selected the right Pokémon for trading and to set which Pokémon will be traded to you. I'm actually in the process of trying to unravel the trading script secrets as well. Until I figured it out you may want to take a look at this tutorial (https://www.pokecommunity.com/showthread.php?p=9775737). This will allow you to do a kind of trading in the game by letting you take a Pokémon from the players party and showing them another Pokémon which is then inserted into their party. But it does not check for a specific species of Pokémon and instead lets the player trade away any Pokémon they want.

 

[kalarie]

@JustinCG2807

In XSE, go to -> Help -> Guide -> Practical Classrom -> In-Game Trades. That section explains how to make a script for something like that;)

 

[Team Embrace]

@JustinCG2807

In XSE, go to -> Help -> Guide -> Practical Classrom -> In-Game Trades. That section explains how to make a script for something like that;)

@JustinCG2807 to follow the Guide in XSE you need a program to edit/add to the trades in your ROM.

Here's a link:
https://www.mediafire.com/?e6i197rjo2jp2jc