added placementRotationFix mixins

src/main/java/carpet/mixins/DirectionMixin.java

@@ -0,0 +1,26 @@
+package carpet.mixins;
+
+import carpet.CarpetSettings;
+import carpet.utils.IEntity;
+import net.minecraft.entity.Entity;
+import net.minecraft.util.math.Direction;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Redirect;
+
+@Mixin(Direction.class)
+public abstract class DirectionMixin
+{
+    @Redirect(method = "getEntityFacingOrder", at = @At(value = "INVOKE", target = "Lnet/minecraft/entity/Entity;getYaw(F)F"))
+    private static float ifGetYaw(Entity entity, float float_1)
+    {
+        if (!CarpetSettings.getBool("placementRotationFix"))
+        {
+            return -entity.getYaw(1.0F) * 0.017453292F;
+        }
+        else
+        {
+            return -((IEntity) entity).getMainYaw(1.0F) * 0.017453292F;
+        }
+    }
+}