将ItemModelShaperMixin放置在fabric端，对forge端另作修改

common/src/main/resources/chinesefestivals-common.mixins.json

@@ -6,7 +6,6 @@
   "mixins": [],
   "client": [
     "BlockModelShaperMixin",
-    "ItemModelShaperMixin",
     "LanguageMixin",
     "LevelRendererMixin"
   ],

common/src/main/java/dev/dubhe/chinesefestivals/mixins/ItemModelShaperMixin.java → fabric/src/main/java/dev/dubhe/chinesefestivals/fabric/mixins/ItemModelShaperMixin.java

@@ -1,4 +1,4 @@
-package dev.dubhe.chinesefestivals.mixins;
+package dev.dubhe.chinesefestivals.fabric.mixins;
 
 import dev.dubhe.chinesefestivals.ChineseFestivals;
 import dev.dubhe.chinesefestivals.festivals.Festivals;

fabric/src/main/resources/chinesefestivals.mixins.json

@@ -6,7 +6,8 @@
   "mixins": [
   ],
   "client": [
-    "CommandsMixin"
+    "CommandsMixin",
+    "ItemModelShaperMixin"
   ],
   "injectors": {
     "defaultRequire": 1

forge/build.gradle

@@ -9,7 +9,7 @@ architectury {
 
 loom {
     forge {
-        mixinConfig "chinesefestivals-common.mixins.json"
+        mixinConfig "chinesefestivals.mixins.json,chinesefestivals-common.mixins.json"
     }
 }
 

forge/src/main/java/dev/dubhe/chinesefestivals/forge/mixins/ForgeItemModelShaperMixin.java

@@ -0,0 +1,46 @@
+package dev.dubhe.chinesefestivals.forge.mixins;
+
+import dev.dubhe.chinesefestivals.ChineseFestivals;
+import dev.dubhe.chinesefestivals.festivals.Festivals;
+import dev.dubhe.chinesefestivals.festivals.IFestival;
+import net.minecraft.client.renderer.ItemModelShaper;
+import net.minecraft.client.resources.model.BakedModel;
+import net.minecraft.client.resources.model.ModelManager;
+import net.minecraft.core.Holder;
+import net.minecraft.world.item.Item;
+import net.minecraftforge.client.model.ForgeItemModelShaper;
+import net.minecraftforge.registries.ForgeRegistries;
+import org.spongepowered.asm.mixin.Final;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.Shadow;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Inject;
+import org.spongepowered.asm.mixin.injection.callback.CallbackInfoReturnable;
+
+import java.util.Map;
+import java.util.function.Supplier;
+
+@Mixin(ForgeItemModelShaper.class)
+public abstract class ForgeItemModelShaperMixin extends ItemModelShaper {
+    @Shadow(remap = false)
+    @Final
+    private Map<Holder.Reference<Item>, BakedModel> models;
+
+    public ForgeItemModelShaperMixin(ModelManager arg) {
+        super(arg);
+    }
+
+    @Inject(method = "getItemModel", remap = false, at = @At("HEAD"), cancellable = true)
+    private void getItemModel(Item item, CallbackInfoReturnable<BakedModel> cir) {
+        ChineseFestivals.LOGGER.info("test");
+        for (IFestival festival : Festivals.FESTIVALS) {
+            if (festival.isNow()) {
+                Supplier<Item> item1 = festival.getItemReplace().getOrDefault(item, null);
+                if (item1 != null) {
+                    cir.setReturnValue(this.models.get(ForgeRegistries.ITEMS.getDelegateOrThrow(item1.get())));
+                    return;
+                }
+            }
+        }
+    }
+}

forge/src/main/resources/chinesefestivals.mixins.json

@@ -0,0 +1,13 @@
+{
+  "required": true,
+  "minVersion": "0.8",
+  "package": "dev.dubhe.chinesefestivals.forge.mixins",
+  "compatibilityLevel": "JAVA_17",
+  "mixins": [],
+  "client": [
+    "ForgeItemModelShaperMixin"
+  ],
+  "injectors": {
+    "defaultRequire": 1
+  }
+}