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[SOLVED] Trouble setting up Forge for 1.15 - cannot resolve sources


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EDIT: SOLVED by fixing my Java JDK installation. Gradle was trying to use an old Java version that didn't exist, so I downloaded the newest Java 8 JDK, and added the line 'org.gradle.java.home=C:/Program Files/AdoptOpenJDK/jdk-8.0.242.08-hotspot' to my gradle.properties file.

 

 

Hi everyone,

 

In trying to setup Forge for 1.15.2 (Eclipse) I keep running into the same problem.

 

This is what I've done:

  • Downloaded the Forge MDK (latest version, 1.15.2 - 31.1.27 - though I also tried with the Recommended version)
  • Extracted all the files into my development folder
  • Downloaded Gradle for Eclipse, and imported the development folder into Eclipse as a Gradle project
  • Run gradlew eclipse in the development folder

 

The problem is that when I open Eclipse, none of the Minecraft or Forge classes are on the build path, and I can't view any of the game source code in package explorer.

 

The issue seems to be that it can't download the source code. This is the error log that I get when I run gradlew --refresh-dependencies:

 

forge-forum-error-log.png.63d9c01faefa671a76be622127d9f6ff.png

 

I also get errors in Eclipse showing that the project is missing the Forge source as a required library.

 

Here is my build.gradle file attached (I haven't edited it at all yet)

Spoiler

 


buildscript {
    repositories {
        maven { url = 'https://files.minecraftforge.net/maven' }
        jcenter()
        mavenCentral()
    }
    dependencies {
        classpath group: 'net.minecraftforge.gradle', name: 'ForgeGradle', version: '3.+', changing: true
    }
}
apply plugin: 'net.minecraftforge.gradle'
// Only edit below this line, the above code adds and enables the necessary things for Forge to be setup.
apply plugin: 'eclipse'
apply plugin: 'maven-publish'

version = '1.0'
group = 'com.yourname.modid' // http://maven.apache.org/guides/mini/guide-naming-conventions.html
archivesBaseName = 'modid'

sourceCompatibility = targetCompatibility = compileJava.sourceCompatibility = compileJava.targetCompatibility = '1.8' // Need this here so eclipse task generates correctly.

minecraft {
    // The mappings can be changed at any time, and must be in the following format.
    // snapshot_YYYYMMDD   Snapshot are built nightly.
    // stable_#            Stables are built at the discretion of the MCP team.
    // Use non-default mappings at your own risk. they may not always work.
    // Simply re-run your setup task after changing the mappings to update your workspace.
    mappings channel: 'snapshot', version: '20200225-1.15.1'
    // makeObfSourceJar = false // an Srg named sources jar is made by default. uncomment this to disable.
    
    // accessTransformer = file('src/main/resources/META-INF/accesstransformer.cfg')

    // Default run configurations.
    // These can be tweaked, removed, or duplicated as needed.
    runs {
        client {
            workingDirectory project.file('run')

            // Recommended logging data for a userdev environment
            property 'forge.logging.markers', 'SCAN,REGISTRIES,REGISTRYDUMP'

            // Recommended logging level for the console
            property 'forge.logging.console.level', 'debug'

            mods {
                examplemod {
                    source sourceSets.main
                }
            }
        }

        server {
            workingDirectory project.file('run')

            // Recommended logging data for a userdev environment
            property 'forge.logging.markers', 'SCAN,REGISTRIES,REGISTRYDUMP'

            // Recommended logging level for the console
            property 'forge.logging.console.level', 'debug'

            mods {
                examplemod {
                    source sourceSets.main
                }
            }
        }

        data {
            workingDirectory project.file('run')

            // Recommended logging data for a userdev environment
            property 'forge.logging.markers', 'SCAN,REGISTRIES,REGISTRYDUMP'

            // Recommended logging level for the console
            property 'forge.logging.console.level', 'debug'

            args '--mod', 'examplemod', '--all', '--output', file('src/generated/resources/')

            mods {
                examplemod {
                    source sourceSets.main
                }
            }
        }
    }
}

dependencies {
    // Specify the version of Minecraft to use, If this is any group other then 'net.minecraft' it is assumed
    // that the dep is a ForgeGradle 'patcher' dependency. And it's patches will be applied.
    // The userdev artifact is a special name and will get all sorts of transformations applied to it.
    minecraft 'net.minecraftforge:forge:1.15.2-31.1.27'

    // You may put jars on which you depend on in ./libs or you may define them like so..
    // compile "some.group:artifact:version:classifier"
    // compile "some.group:artifact:version"

    // Real examples
    // compile 'com.mod-buildcraft:buildcraft:6.0.8:dev'  // adds buildcraft to the dev env
    // compile 'com.googlecode.efficient-java-matrix-library:ejml:0.24' // adds ejml to the dev env

    // The 'provided' configuration is for optional dependencies that exist at compile-time but might not at runtime.
    // provided 'com.mod-buildcraft:buildcraft:6.0.8:dev'

    // These dependencies get remapped to your current MCP mappings
    // deobf 'com.mod-buildcraft:buildcraft:6.0.8:dev'

    // For more info...
    // http://www.gradle.org/docs/current/userguide/artifact_dependencies_tutorial.html
    // http://www.gradle.org/docs/current/userguide/dependency_management.html

}

// Example for how to get properties into the manifest for reading by the runtime..
jar {
    manifest {
        attributes([
            "Specification-Title": "examplemod",
            "Specification-Vendor": "examplemodsareus",
            "Specification-Version": "1", // We are version 1 of ourselves
            "Implementation-Title": project.name,
            "Implementation-Version": "${version}",
            "Implementation-Vendor" :"examplemodsareus",
            "Implementation-Timestamp": new Date().format("yyyy-MM-dd'T'HH:mm:ssZ")
        ])
    }
}

// Example configuration to allow publishing using the maven-publish task
// This is the preferred method to reobfuscate your jar file
jar.finalizedBy('reobfJar') 
// However if you are in a multi-project build, dev time needs unobfed jar files, so you can delay the obfuscation until publishing by doing
//publish.dependsOn('reobfJar')

publishing {
    publications {
        mavenJava(MavenPublication) {
            artifact jar
        }
    }
    repositories {
        maven {
            url "file:///${project.projectDir}/mcmodsrepo"
        }
    }
}

 

 

I've tried recreating the entire setup multiple times from scratch, using both the latest and recommended versions, and each time I get this error.

 

I've read the instructions at https://mcforge.readthedocs.io/en/latest/gettingstarted/ but it doesn't seem to cover how you get the project up and running. I've looked around other threads on this forum but to no avail.

 

What am I doing wrong? Any help would be very highly appreciated.

Edited by Fluorescent Flamingo
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I still use the commandline to setup my projects for eclipse, i.e.

Quote

gradlew eclipse

gradlew genEclipseRuns

Then import into eclipse as an Existing Project as opposed to a gradle project.

I couldn't tell you the reason why, but I have to set the project up *twice* before the sources are available to me when I import existing project into eclipse.

 

Trying to run the gradle tasks within eclipse hasn't really worked for me.

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I just copied the source code, imported the gradle project, and ran tasks for all IDEs. I have IntellijIDEA, Eclipse, VScode working with vanilla source.
IMPORTANT! You need to wait until IDE downloads and prepares all the files.

gradle tasks --all

By the way, I recommend specifying "org.gradle.java.home = ? / Program Files / Java / jdk1.8.0_241" in gradle.properties
image.png.277204e26df9660ffc42ca814853642a.png

Edited by Torq

If I helped you, don't forget like. I'm using a translator, sorry.

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