I'd like to slightly change the (game id) names of items in my mod for the next release. It there a way to add an alias or something so that doing this doesn't break people's old save files when they update?

1 minute ago, skeddles said:

I'd like to slightly change the (game id) names of items in my mod for the next release. It there a way to add an alias or something so that doing this doesn't break people's old save files when they update?

Why do you want to change the game ids?

1 minute ago, Animefan8888 said:

Why do you want to change the game ids?

I just formatted them poorly like camelCaseStyleName instead of underscore_style_name like people would expect

Edited September 16, 20187 yr by skeddles

Just now, skeddles said:

I just formatted them poorly like camelCaseStyleName instead of underscore_style_name like people would expect

They are/should automatically be set to lower case.

And yes, there's a Forge Missing Mapping event you can subscribe to to update things.

Basically this process is called "data fixing". So as Draco18s mentions you can intercept an event that makes sense -- like loading problem or possibly even earlier and "fix" the data by converting it. You'll notice that vanilla has to do that when they update save formats and such and you'll seed data fixer methods and classes occasionally in the code.

How can I look at what events there are? I found this thread which explains it but I can't figure how to do it with my IDE or what exactly to click. I used IntelliJ. Usually I right click > go to > declaration.

 

//loot tables
@SubscribeEvent
public static void lootLoad(LootTableLoadEvent evt) {
    //code
}

18 minutes ago, skeddles said:

How can I look at what events there are? I found this thread which explains it but I can't figure how to do it with my IDE or what exactly to click. I used IntelliJ. Usually I right click > go to > declaration.

Typically I just check the file locations, net.minecraftforge.client.event, net.minecraftforge.event, net.minecraftforge.fml.client.event, net.minecraftforge.fml.common.event, or net.minecraftforge.fml.common.gameevent. Note fml.common.event are the mod life-cycle events.

On 9/29/2018 at 2:07 PM, skeddles said:

How can I look at what events there are? I found this thread which explains it but I can't figure how to do it with my IDE or what exactly to click. I used IntelliJ. Usually I right click > go to > declaration.

 

//loot tables
@SubscribeEvent
public static void lootLoad(LootTableLoadEvent evt) {
    //code
}

 

One of many ways: In Eclipse you can find the Event class (in net.minecraftforge.event) and look at the Type Hierarchy (you can get there by highlighting the class name and right-clicking and choosing Type Hierarchy). That should open a pane in the window that contains all classes that extend Event.