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--- tutorial:hotswapping [2024/06/30 00:02] – removed - external edit (Unknown date) 127.0.0.1
+++ tutorial:hotswapping [2024/11/03 17:26] (current) – [Hotswapping Mixins] modmuss50
@@ Line 1: / Line 1: @@
+~~REDIRECT>https://docs.fabricmc.net/develop/getting-started/launching-the-game#hotswapping-classes~~
+====== Applying changes without restarting Minecraft ======
+Restarting Minecraft can take a hefty amount of time. Thankfully, there are tools that allow you to apply some changes while the game is running, also called hotswapping.
+===== Reload changed classes =====
+In Eclipse or IntelliJ IDEA, run Minecraft in debug mode. To apply changes in code, click the "Build" button in IntelliJ IDEA or save in Eclipse.
+Note: this only allows you to change method bodies. If you do any other kind of change, you will have to restart.
+However, if you use a special JDK, [[https://dcevm.github.io/|DCEVM]] (up to Java 11), you will be able to do most changes, including adding and removing methods and classes.
+For Java 11+ use the [[https://github.com/JetBrains/JetBrainsRuntime|JetBrains Runtime]] and add ''-XX:+AllowEnhancedClassRedefinition'' as a VM option to your run configuration:
+{{https://i.imgur.com/SuW9MlV.png}}
+===== Reload resources =====
+==== Reload assets ====
+After you make changes to assets such as textures and block/item models, you can rebuild the project and press ''F3 + T'' to apply changes without restarting Minecraft. More specifically, this is how to reload anything the mod provides as a resource pack.
+==== Reload data ====
+You can apply any changes made in the ''data/'' directory such as recipes, loot tables and tags by rebuilding the project and then using the in-game command ''/reload''. More specifically, this reloads anything the mod provides as a data pack.
+===== Hotswapping Mixins =====
+You can also hotswap mixins by using Mixin Java agent. For how to achieve that, see [[https://docs.fabricmc.net/develop/getting-started/launching-the-game#hotswapping-mixins|Fabric Docs page]] and [[mixin_hotswaps]].