Removed '-snapshot' based dependencies

build.gradle

@@ -1,3 +1,5 @@
+import groovy.json.JsonSlurper
+
 buildscript{
     repositories{
         mavenLocal()
@@ -12,11 +14,6 @@ buildscript{
     }
 }
 
-//make sure snapshot Arc does not get cached
-configurations.all {
-    resolutionStrategy.cacheChangingModulesFor 0, 'seconds'
-}
-
 allprojects{
     apply plugin: "idea"
 
@@ -29,16 +26,25 @@ allprojects{
         appName = 'Mindustry'
         gdxVersion = '1.9.9'
         roboVMVersion = '2.3.0'
-        uCoreVersion = 'bf399460a6a3656b0ed7cfe398a72befe2b66b42'
-        
+        arcHash = null
+
+        localArc = {
+            return (System.properties["release"] == null || System.properties["release"] == "false") && new File(projectDir.parent, '../Arc').exists()
+        }
+
+        getArcHash = {
+            //get latest commit hash from gtihub since JITPack's '-snapshot' version doesn't work correctly
+            if(arcHash == null) arcHash = new JsonSlurper().parseText(new URL("https://api.github.com/repos/Anuken/Arc/commits/master").text)["sha"]
+            return arcHash
+        }
+
         arcModule = { String name ->
-            def comp = System.properties["release"] == null || System.properties["release"] == "false"
-            
-            if(new File(projectDir.parent, '../Arc').exists() && comp){
+            if(localArc()){
                 return project(":Arc:$name")
             }else{
+                //skip to last submodule
                 if(name.contains(':')) name = name.split(':').last()
-                return "com.github.Anuken.Arc:$name:-SNAPSHOT"
+                return "com.github.Anuken.Arc:$name:${getArcHash()}"
             }
         }
 
@@ -182,7 +188,10 @@ project(":core"){
 
     dependencies{
         build.finalizedBy(finish)
-        
+
+        //forces JITPack to compile arc and its submodules
+        if(localArc()) compile "com.github.anuken:arc:${getArcHash()}"
+
         compile arcModule("arc-core")
         compile arcModule("extensions:freetype")