From fa94611e28dacae53a05d5fa6f116bd53ac1c9ad Mon Sep 17 00:00:00 2001
From: Badtz <badtzmaru139@gmail.com>
Date: Mon, 22 Jun 2026 12:21:40 -0700
Subject: [PATCH] add mixin to handle 2x2 crafting grid

---
 .../prefixes/mixin/InventoryMenuMixin.java    | 25 +++++++++++++++++++
 src/main/resources/prefixes.mixins.json       |  3 ++-
 2 files changed, 27 insertions(+), 1 deletion(-)
 create mode 100644 src/main/java/dev/badtz/prefixes/mixin/InventoryMenuMixin.java

diff --git a/src/main/java/dev/badtz/prefixes/mixin/InventoryMenuMixin.java b/src/main/java/dev/badtz/prefixes/mixin/InventoryMenuMixin.java
new file mode 100644
index 0000000..566a6ef
--- /dev/null
+++ b/src/main/java/dev/badtz/prefixes/mixin/InventoryMenuMixin.java
@@ -0,0 +1,25 @@
+package dev.badtz.prefixes.mixin;
+
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Redirect;
+import dev.badtz.prefixes.PrefixApplier;
+import net.minecraft.world.entity.player.Player;
+import net.minecraft.world.inventory.InventoryMenu;
+import net.minecraft.world.item.ItemStack;
+
+@Mixin(InventoryMenu.class)
+public class InventoryMenuMixin {
+    @Redirect(method = "quickMoveStack", at = @At(value = "INVOKE",
+            target = "Lnet/minecraft/world/inventory/InventoryMenu;moveItemStackTo(Lnet/minecraft/world/item/ItemStack;IIZ)Z",
+            ordinal = 0))
+    private boolean prefixes$applyRandomPrefixOnShiftCraft(InventoryMenu menu, ItemStack stack,
+            int startIndex, int endIndex, boolean reverseDirection, Player player, int slotIndex) {
+        if (slotIndex == 0 && !player.level().isClientSide()) {
+            PrefixApplier.applyRandomIfNeeded(stack, player.getRandom());
+        }
+
+        return ((AbstractContainerMenuAccessor) menu).prefixes$moveItemStackTo(stack, startIndex,
+                endIndex, reverseDirection);
+    }
+}
diff --git a/src/main/resources/prefixes.mixins.json b/src/main/resources/prefixes.mixins.json
index 7c12e83..0fecbc0 100644
--- a/src/main/resources/prefixes.mixins.json
+++ b/src/main/resources/prefixes.mixins.json
@@ -8,7 +8,8 @@
 		"MerchantResultSlotMixin",
 		"CrafterBlockMixin",
 		"PlayerMixin",
-		"AbstractContainerMenuAccessor"
+		"AbstractContainerMenuAccessor",
+		"InventoryMenuMixin"
 	],
 	"client": [],
 	"injectors": {