Jiro7

Thank you for the answer. Do I need to create a new class to handle the GenerateMinable event (with EventBusSubscriber) or can I do it on my mod world generation class?

I've been searching everywhere on how to change the vanilla ore generation but all I found is how to completely disable it. But I don't want to change some ores like dirt, andesite and such. I want to change the generation of ores like iron, gold, diamonds or quartz to make them rarer and spawn in smaller veins. How can I do this? Additional question: is it possible to make one ore generate inside another ore? For example, if I add a rare variation of iron ore, can I make it spawn with Iron Ore as the base block to generate in? Thanks for the help.

Makes sense, I missunderstood the guide. Thank you.

What do you mean by my code? I haven't started with the mod, I just did the setup and tried to run the mod and got the error I mentioned above. Maybe the missing files were ignored by gitignore?

Done https://github.com/jaimefd/Jiromod

Github: https://github.com/jaimefd/Jiromod So I just started modding (I have experience with both java and eclipse before). I was following the Forge documentation, downloaded the mdk file for 1.12.2, moved the 4 files, set up the workspace and all that stuff. Then I edited the build.gradle file but only changed group and archivesbasename to com.jiro.jiromod and jiromod respectively. Didn't touch anything else in that file. Then I ran "gradlew build" and built the mod. Then I got 2 files. I copied the "jiromod-1.0.jar" file and copied it to /Jiromod/run/mods. And last I went back to /Jiromod, run the cmd, did the "gradlew runClient" command to test my mod and got that error in the log. The game launches fine, but it only recognizes 4 mods, and none of those mods is my Jiromod mod. What am I doing wrong? Thanks for the help.