build.gradle

import org.gradle.plugins.ide.idea.model.* 

// define the properties file 
ext.configFile = file "gradle.properties"
configFile.withReader { 
    // read config.  it shall from now on be referenced as simply config or as project.config 
    def prop = new Properties() 
    prop.load(it) 
    project.ext.config = new ConfigSlurper().parse prop 
}

buildscript {
    repositories {
        jcenter()
        maven { url = "http://files.minecraftforge.net/maven" }
    }
    dependencies {
        classpath 'net.minecraftforge.gradle:ForgeGradle:2.3-SNAPSHOT'
    }
}
apply plugin: 'java' 
apply plugin: 'idea' 
apply plugin: 'net.minecraftforge.gradle.forge'

///////////////////////////////////////////////////  
// IDE Settings 
/////////////////////////////////////////////////// 

/////////////////////////////////////////////////// 
// ForgeGradle 
/////////////////////////////////////////////////// 
def isCIBuild = hasProperty("CIRevision")
if (isCIBuild) {
    println("Producing a Release build")
} else {
    println("This build will produce an unsactioned release")
}
version = (hasProperty("CIRevision") ? CIRevision : config.mod_version) 
group = config.group_name 
archivesBaseName = "${config.mod_id}-${config.minecraft_version}" 
sourceCompatibility = targetCompatibility = JavaVersion.VERSION_1_8 // Need this here so eclipse task generates correctly.
compileJava {
    sourceCompatibility = targetCompatibility = JavaVersion.VERSION_1_8
}

minecraft {
    version = config.minecraft_version + "-" + config.forge_version // grab latest forge 
    runDir = "run"
    
    mappings = config.mcp_mappings 
    makeObfSourceJar = false // an Srg named sources jar is made by default. uncomment this to disable. 

    replace '@MOD_VERSION@', version 
    replace '@MOD_ID@', config.mod_id 
    replace '@CI_BUILD@', hasProperty("CIRevision") ? 'true' : 'false' 
}

processResources {
    // this will ensure that this task is redone when the versions change.
    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 version and mcversion
        expand ([ 
            'version':project.version, 
            'mcversion':project.minecraft.version, 
            'forge_version': config.forge_version, 
            'mod_version': config.mod_version, 
            'minecraft_version': config.minecraft_version 
        ])
    }
        
    // copy everything else except the mcmod.info
    from(sourceSets.main.resources.srcDirs) {
        exclude 'mcmod.info'
    }
}

jar { 
    classifier = 'universal' 
}