creativeNoClip player are not affected by opening shulkers. Fixes #878

src/main/java/carpet/mixins/ShulkerBoxBlockEntity_creativeNoClipMixin.java

@@ -0,0 +1,25 @@
+package carpet.mixins;
+
+import carpet.CarpetSettings;
+import net.minecraft.block.entity.ShulkerBoxBlockEntity;
+import net.minecraft.block.piston.PistonBehavior;
+import net.minecraft.entity.Entity;
+import net.minecraft.entity.player.PlayerEntity;
+import org.spongepowered.asm.mixin.Mixin;
+import org.spongepowered.asm.mixin.injection.At;
+import org.spongepowered.asm.mixin.injection.Redirect;
+
+@Mixin(ShulkerBoxBlockEntity.class)
+public class ShulkerBoxBlockEntity_creativeNoClipMixin
+{
+    @Redirect(method = "pushEntities", at = @At(
+            value = "INVOKE",
+            target = "Lnet/minecraft/entity/Entity;getPistonBehavior()Lnet/minecraft/block/piston/PistonBehavior;"
+    ))
+    private PistonBehavior getPistonBehaviourOfNoClipPlayers(Entity entity)
+    {
+        if (CarpetSettings.creativeNoClip && entity instanceof PlayerEntity && (((PlayerEntity) entity).isCreative()) && ((PlayerEntity) entity).abilities.flying)
+            return PistonBehavior.IGNORE;
+        return entity.getPistonBehavior();
+    }
+}

src/main/resources/carpet.mixins.json

@@ -203,6 +203,7 @@
     "PistonBlockEntity_playerHandlingMixin",
     "BlockItem_creativeNoClipMixin",
     "WallStandingBlockItem_creativeNoClipMixin",
+    "ShulkerBoxBlockEntity_creativeNoClipMixin",
     "LivingEntity_creativeFlyMixin"
 
   ],