LivingEntityのパケットによる座標更新時にheadYawとbodyYawも更新する

raincoat-fabric/src/main/java/dev/uten2c/raincoat/mixin/entity/MixinLivingEntity.java

@@ -0,0 +1,51 @@
+package dev.uten2c.raincoat.mixin.entity;
+
+import dev.uten2c.raincoat.States;
+import net.minecraft.entity.Entity;
+import net.minecraft.entity.EntityType;
+import net.minecraft.entity.LivingEntity;
+import net.minecraft.world.World;
+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.CallbackInfo;
+
+@Mixin(LivingEntity.class)
+public abstract class MixinLivingEntity extends Entity {
+    @Shadow
+    public float prevHeadYaw;
+
+    @Shadow
+    public float headYaw;
+
+    @Shadow
+    public float bodyYaw;
+
+    @Shadow
+    public float prevBodyYaw;
+
+    public MixinLivingEntity(EntityType<?> type, World world) {
+        super(type, world);
+    }
+
+    @Inject(method = "updateTrackedHeadRotation", at = @At("TAIL"))
+    private void updatePrevHeadYaw(float yaw, int interpolationSteps, CallbackInfo ci) {
+        if (!States.isOnServer()) {
+            return;
+        }
+        prevHeadYaw = yaw;
+    }
+
+    @Override
+    public void updatePositionAndAngles(double x, double y, double z, float yaw, float pitch) {
+        super.updatePositionAndAngles(x, y, z, yaw, pitch);
+        if (!States.isOnServer()) {
+            return;
+        }
+        headYaw = yaw;
+        prevHeadYaw = yaw;
+        bodyYaw = yaw;
+        prevBodyYaw = yaw;
+    }
+}

raincoat-fabric/src/main/resources/raincoat.mixins.json

@@ -33,6 +33,7 @@
     "block.entity.MixinHangingSignBlockEntity",
     "block.entity.MixinSignBlockEntity",
     "block.entity.MixinWallHangingSignBlock",
+    "entity.MixinLivingEntity",
     "item.MixinItemGroups"
   ],
   "injectors": {