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Process resources and replacements when executing code


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Normally when you start minecraft (usually through the generated run configurations), your mcmod.info will contain stuff like `${version}` and `${mcversion}`. While I am aware that these will be fixed when actually building the code (processResources is called), I want to be able to run them in addition to my `replaceIn` and `replace` snippets before being able to test. Obviously the generated configurations will not have this happen. I considered runClient, and for a while it actually used to work, but now it no longer works, and I am at a loss. Additionally, while `processResources` works perfectly fine as I'm building, the `replace` stuff does not. How can I resolve these issues?



buildscript {
    repositories {
        maven {
            name = "forge"
            url = "https://files.minecraftforge.net/maven"
    dependencies {
        classpath "net.minecraftforge.gradle:ForgeGradle:2.1-SNAPSHOT"

apply plugin: "net.minecraftforge.gradle.forge"

version = "0.1"
group = "org.frontear"
archivesBaseName = "MyMod"
targetCompatibility = sourceCompatibility = JavaVersion.VERSION_1_8

minecraft {
    version = "1.8.9-"
    mappings = "stable_22"

    replaceIn 'MyMod.java'
    replace '${modid}': archivesBaseName.toLowerCase(), '${version}': project.version

repositories {

processResources {
    // this will ensure that this task is redone when the values change.
    inputs.property "modid", archivesBaseName.toLowerCase()
    inputs.property "name", archivesBaseName
    inputs.property "version", project.version
    inputs.property "mcversion", project.minecraft.version

    // replace stuff in mcmod.info, nothing else
    from(sourceSets.main.resources.srcDirs) {
        include "mcmod.info"

        // replace modid, name, version and mcversion
        expand "modid": archivesBaseName.toLowerCase(), "name": archivesBaseName, "version": project.version, "mcversion": project.minecraft.version

    // copy everything else, thats not the mcmod.info
    from(sourceSets.main.resources.srcDirs) {
        exclude "mcmod.info"



package org.frontear.mymod;

import net.minecraft.init.Blocks;
import net.minecraftforge.fml.common.Mod;
import net.minecraftforge.fml.common.event.FMLInitializationEvent;

@Mod(modid = "${modid}", version = "${version}") public class MyMod {
	@Mod.EventHandler public void init(FMLInitializationEvent event) {
		// some example code
		System.out.println("DIRT BLOCK >> " + Blocks.dirt.getUnlocalizedName());



    "modid": "${modid}",
    "name": "${name}",
    "description": "Blah blah blah, something something something",
    "version": "${version}",
    "mcversion": "${mcversion}",
    "url": "",
    "updateUrl": "",
    "authorList": [
    "credits": "",
    "logoFile": "",
    "screenshots": [],
    "dependencies": []


Edited by Frontear

I am a human and this action was performed manually. Please contact Frontear if you have any questions or concerns.

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I just restarted my IDE and everything decided to work fine. I just had to fix an issue with `MISSING REPLACEMENT DATA FOR RUN_DIR`, which was fixed by adding `runDir = "run"` into the `minecraft` area. 

I am a human and this action was performed manually. Please contact Frontear if you have any questions or concerns.

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    • First off, what's the error? Second, can you show your ModSpawnEggItem class?  And third, is that class really needed? Forge provides a spawn egg class, you don't need a custom one unless you want additional behavior.
    • I tried this code but I got an error while making custom spawn egg for a skeleton(this skeleton is a vanilla minecraft entity) I think I know why this error is coming, but I don't know how to solve it, can you please help, I am sharing the code -  package com.anirudh.forgemod.init; import com.anirudh.forgemod.ForgeMod; import com.anirudh.forgemod.items.ItemBase; import com.anirudh.forgemod.items.ModSpawnEggItem; import com.anirudh.forgemod.items.StrongestApple; import com.anirudh.forgemod.util.enums.ModArmorMaterial; import net.minecraft.world.entity.EntityType; import net.minecraft.world.entity.EquipmentSlot; import net.minecraft.world.item.ArmorItem; import net.minecraft.world.item.CreativeModeTab; import net.minecraft.world.item.Item; import net.minecraftforge.fmllegacy.RegistryObject; import net.minecraftforge.registries.DeferredRegister; import net.minecraftforge.registries.ForgeRegistries; public class ModItems { public static DeferredRegister<Item> ITEMS = DeferredRegister.create(ForgeRegistries.ITEMS, ForgeMod.MOD_ID); //Items public static final RegistryObject<Item> RUBY = ITEMS.register("ruby", ItemBase::new); public static final RegistryObject<StrongestApple> POISON_APPLE = ITEMS.register("strongest_apple", StrongestApple::new); public static final RegistryObject<ModSpawnEggItem> SKELETON_SPAWN_EGG = ITEMS.register("skeleton_spawn_egg", () -> new ModSpawnEggItem(EntityType.SKELETON, 0x00FFA8, 0x326D59, new Item.Properties().tab(CreativeModeTab.TAB_MATERIALS))); //Armor public static final RegistryObject<ArmorItem> RUBY_HELMET = ITEMS.register("ruby_helmet", () -> new ArmorItem(ModArmorMaterial.RUBY, EquipmentSlot.HEAD, new Item.Properties().tab(CreativeModeTab.TAB_COMBAT))); public static final RegistryObject<ArmorItem> RUBY_CHESTPLATE = ITEMS.register("ruby_chestplate", () -> new ArmorItem(ModArmorMaterial.RUBY, EquipmentSlot.CHEST, new Item.Properties().tab(CreativeModeTab.TAB_COMBAT))); public static final RegistryObject<ArmorItem> RUBY_LEGGINGS = ITEMS.register("ruby_leggings", () -> new ArmorItem(ModArmorMaterial.RUBY, EquipmentSlot.LEGS, new Item.Properties().tab(CreativeModeTab.TAB_COMBAT))); public static final RegistryObject<ArmorItem> RUBY_BOOTS = ITEMS.register("ruby_boots", () -> new ArmorItem(ModArmorMaterial.RUBY, EquipmentSlot.FEET, new Item.Properties().tab(CreativeModeTab.TAB_COMBAT))); }  
    • Depends entirely on the context. As it stands those are two words that you can look up in a dictionary.
    • The mod is not using the Forge config system correctly, I would recommend you report this to the mod author. Delete their config file if you didn't modify it.
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