Added texture generation system

packer/build.gradle

@@ -0,0 +1,45 @@
+apply plugin: "java"
+
+sourceCompatibility = 1.8
+sourceSets.main.java.srcDirs = [ "src/" ]
+
+import com.badlogic.gdx.tools.texturepacker.TexturePacker
+
+def textureFolder = "../core/assets-raw/sprites/generated/"
+
+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.TextureGenerator"
+    classpath = sourceSets.main.runtimeClasspath
+    standardInput = System.in
+    workingDir = textureFolder
+}