Mindustry/tools/build.gradle

apply plugin: "java"

sourceCompatibility = 1.8
sourceSets.main.java.srcDirs = ["src/"]

import com.badlogic.gdx.graphics.Color
import com.badlogic.gdx.tools.texturepacker.TexturePacker

import javax.imageio.ImageIO

def textureFolder = "../core/assets-raw/sprites/generated/"

task swapColors(){
    doLast{
        if(project.hasProperty("colors")){
            def carr = new File(getProperty("colors")).text.split("\n")
            def map = [:]
            def swaps = 0
            carr.each{ str -> map[Color.argb8888(Color.valueOf(str.split("=")[0]))] = Color.argb8888(Color.valueOf(str.split("=")[1])) }
            def tmpc = new Color()

            fileTree(dir: '../core/assets-raw/sprites', include: "**/*.png").visit{ file ->
                if(file.isDirectory()) return
                swaps++

                def img = ImageIO.read(file.file)
                for(x in (0..img.getWidth() - 1)){
                    for(y in (0..img.getHeight() - 1)){
                        def c = img.getRGB(x, y)
                        Color.argb8888ToColor(tmpc, c)
                        if(tmpc.a < 0.1f) continue
                        if(map.containsKey(c)){
                            img.setRGB(x, y, (int) map.get(c))
                        }
                    }
                }
                ImageIO.write(img, "png", file.file)
            }
            println "Swapped $swaps images."
        }else{
            throw new InvalidUserDataException("No replacement colors specified. Use -Pcolors=\"<path to color file>\"")
        }
    }
}

task pack(){
    dependsOn 'prePack'

    doLast{
        TexturePacker.process("core/assets-raw/sprites/", "core/assets/sprites/", "sprites.atlas")

        delete{
            delete textureFolder
        }
    }
}

task prePack(){
    dependsOn "cleanup"

    doLast{
        TexturePacker.process("core/assets-raw/sprites/", "core/assets/sprites/", "sprites.atlas")
    }

    finalizedBy 'generateSprites'
}

task cleanup(){
    delete{
        delete textureFolder
    }
}

task generateSprites(dependsOn: classes, type: JavaExec){
    file(textureFolder).mkdirs()

    main = "io.anuke.mindustry.PackerLauncher"
    classpath = sourceSets.main.runtimeClasspath
    standardInput = System.in
    workingDir = textureFolder
}

task updateBundles(dependsOn: classes, type: JavaExec){
    file(textureFolder).mkdirs()

    main = "io.anuke.mindustry.BundleLauncher"
    classpath = sourceSets.main.runtimeClasspath
    standardInput = System.in
    workingDir = "../core/assets/bundles/"
}