Derive project MC version from project name (backwards incompatible!)

Author: Johni0702

src/main/kotlin/com/replaymod/gradle/preprocess/PreprocessPlugin.kt

@@ -18,7 +18,8 @@ class PreprocessPlugin : Plugin<Project> {
 
         val parent = project.parent!!
         val coreVersion = coreVersionFile.readText().toInt()
-        val mcVersion = project.extra["mcVersion"] as Int
+        val mcVersion = project.getMcVersion()
+        project.extra["mcVersion"] = mcVersion
         if (coreVersion == mcVersion) {
             project.the<SourceSetContainer>().configureEach {
                 java.setSrcDirs(listOf(parent.file("src/$name/java")))
@@ -118,6 +119,10 @@ class PreprocessPlugin : Plugin<Project> {
     }
 }
 
+private fun Project.getMcVersion(): Int = (name.split(".") + listOf("")).let { (major, minor, patch) ->
+    "$major${minor.padStart(2, '0')}${patch.padStart(2, '0')}".toInt()
+}
+
 private fun Project.byVersion(version: Int): Project {
     val name = "${version/10000}.${version/100 % 100}${if (version%100 == 0) "" else ".${version%100}"}"
     return project.parent!!.evaluationDependsOn(name)