build.gradle

// 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
}

// For those who want the bleeding edge
buildscript {
    repositories {
        jcenter()
        maven {
            name = "forge"
            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'

///////////////////////////////////////////////////
// ForgeGradle
///////////////////////////////////////////////////
version = (hasProperty("CIRevision") ? CIRevision : config.mod_version)
group = config.group_name
archivesBaseName = "${config.mod_id}-${config.minecraft_version}"
sourceCompatibility = JavaVersion.VERSION_1_8
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 '**/*.info'
                include '**/*.properties'

                // 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, thats not the mcmod.info
            from(sourceSets.main.resources.srcDirs) {
                exclude 'mcmod.info'
            }
        }

//jar {
//    classifier = 'universal'
//    manifest {
//        attributes 'FMLAT': config.mod_id + '_at.cfg'
//    }
//}

sourceSets {
    main {
        java {
            srcDirs = [ 'src/main/java' ]
        }
    }
}