build.gradle

apply plugin: "java"
apply plugin: 'kotlin'

buildscript {
    ext.kotlin_version = '1.1.4-2'

    repositories {
        mavenCentral()
    }
    dependencies {
        classpath "org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version"
    }
}

import org.gradle.internal.os.OperatingSystem

switch ( OperatingSystem.current() ) {
	case OperatingSystem.WINDOWS:
		project.ext.lwjglNatives = "natives-windows"
		break
	case OperatingSystem.LINUX:
		project.ext.lwjglNatives = "natives-linux"
	break
	case OperatingSystem.MAC_OS:
		project.ext.lwjglNatives = "natives-macos"
		break
}

project.ext.lwjglVersion = "3.2.0"

repositories {
	mavenCentral()
}

sourceSets {
    main {
        java {
            srcDirs = ["src/main/java", "src/main/kotlin"]
        }
        resources {
            srcDirs = ["src/main/resources"]
        }
    }
    test {
        java {
            srcDirs = ["src/test/java"]
        }
        resources {
            srcDirs = ["src/test/resources"]
        }
    }
}

dependencies {
	compile "org.lwjgl:lwjgl:${lwjglVersion}"
	compile "org.lwjgl:lwjgl-openal:${lwjglVersion}"
    compile "org.lwjgl:lwjgl-stb:${lwjglVersion}"
    runtime "org.lwjgl:lwjgl:${lwjglVersion}:${lwjglNatives}"
    runtime "org.lwjgl:lwjgl-openal:${lwjglVersion}:${lwjglNatives}"
    runtime "org.lwjgl:lwjgl-stb:${lwjglVersion}:${lwjglNatives}"

    compile "org.jetbrains.kotlin:kotlin-stdlib-jre8:$kotlin_version"
    compile "org.jetbrains.kotlin:kotlin-reflect:$kotlin_version"
}