1.20.5 snapshot jdk21 JAVA_COMPATIBILITY

common.gradle

@@ -46,14 +46,22 @@ dependencies {
 String MIXIN_CONFIG_PATH = 'template_mod.mixins.json'
 String LANG_DIR = 'assets/template_mod/lang'
 JavaVersion JAVA_COMPATIBILITY
-if (mcVersion >= 11800) {
+if (mcVersion >= 12005) {
+	JAVA_COMPATIBILITY = JavaVersion.VERSION_21
+} else if (mcVersion >= 11800) {
 	JAVA_COMPATIBILITY = JavaVersion.VERSION_17
 } else if (mcVersion >= 11700) {
 	JAVA_COMPATIBILITY = JavaVersion.VERSION_16
 } else {
 	JAVA_COMPATIBILITY = JavaVersion.VERSION_1_8
 }
 
+// mixin does not support java 21 yet
+JavaVersion MIXIN_COMPATIBILITY_LEVEL = JAVA_COMPATIBILITY
+if (MIXIN_COMPATIBILITY_LEVEL.ordinal() > JavaVersion.VERSION_17.ordinal()) {
+	MIXIN_COMPATIBILITY_LEVEL = JavaVersion.VERSION_17
+}
+
 loom {
 	runConfigs.configureEach {
 		// to make sure it generates all "Minecraft Client (:subproject_name)" applications
@@ -113,7 +121,7 @@ processResources {
 	}
 
 	filesMatching(MIXIN_CONFIG_PATH) {
-		filter { s -> s.replace('{{COMPATIBILITY_LEVEL}}', "JAVA_${JAVA_COMPATIBILITY.ordinal() + 1}") }
+		filter { s -> s.replace('{{COMPATIBILITY_LEVEL}}', "JAVA_${MIXIN_COMPATIBILITY_LEVEL.ordinal() + 1}") }
 	}
 }