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--- tutorial:mixin_hotswaps [2022/05/05 18:26] – Added missing step. amymialee
+++ tutorial:mixin_hotswaps [2026/03/24 17:30] (current) – Redirect to Docs page gauntrecluse
@@ Line 1: / Line 1: @@
+~~REDIRECT>https://docs.fabricmc.net/develop/getting-started/intellij-idea/launching-the-game#hotswapping-mixins~~
 ====== Hotswapping Mixins ======
 Mixins can't be hot-swapped in a default Fabric environment. To enable this functionality, you'll have to specify the ''-javaagent'' flag inside your VM options.
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 {{https://i.imgur.com/fUrhss5.png}}
-Copy the full path to the jar and open up your run configurations. Under ''Minecraft Client'', expand the VM options tab. You'll need to set the ''-javaagent'' flag to the path of the mixin jar:
+Copy the full path to the jar and open up your run configurations. Under ''Minecraft Client'', expand the VM options tab. You'll need to set the ''-javaagent'' flag to the path of the mixin jar.
+Optionally, you can add the ''-XX:+AllowEnhancedClassRedefinition'' flag to enable parameters to be changed, and fields or methods to be added/removed:
 {{https://i.imgur.com/SuW9MlV.png}}
-Run your game in debug mode. You can now reload mixins using the same rules as normal:
+You can do these things if you also add the ''-XX:+AllowEnhancedClassRedefinition'' VM option.
-  * no adding or removing methods
-  * no changing method parameters
-  * no adding or removing fields
 To recompile your mixin in IntelliJ, use the ''Recompile'' option in the ''Build'' menu. The default keybind for this is ''Ctrl+Shift+F9''.