Crafting input - Optimize isEmpty check to reduce lag (#2239)

* Optimize isEmpty check

* rearrage

1 files changed, 4 insertions, 8 deletions

diff --git a/src/main/java/gregtech/common/tileentities/machines/GT_MetaTileEntity_Hatch_CraftingInput_ME.java b/src/main/java/gregtech/common/tileentities/machines/GT_MetaTileEntity_Hatch_CraftingInput_ME.java
index e3c8b86461..ab8271e8fe 100644
--- a/src/main/java/gregtech/common/tileentities/machines/GT_MetaTileEntity_Hatch_CraftingInput_ME.java
+++ b/src/main/java/gregtech/common/tileentities/machines/GT_MetaTileEntity_Hatch_CraftingInput_ME.java
@@ -146,15 +146,11 @@ public class GT_MetaTileEntity_Hatch_CraftingInput_ME extends GT_MetaTileEntity_
         }
 
         private boolean isEmpty() {
-            if (itemInventory.isEmpty() && fluidInventory.isEmpty()) return true;
+            // if one item / fluid is empty then it should be safe to assume all other is empty,
+            // or at least won't require a recipe check, as long as the pattern is sane
+            if (!itemInventory.isEmpty()) return itemInventory.get(0) == null || itemInventory.get(0).stackSize <= 0;
 
-            for (ItemStack itemStack : itemInventory) {
-                if (itemStack != null && itemStack.stackSize > 0) return false;
-            }
-
-            for (FluidStack fluidStack : fluidInventory) {
-                if (fluidStack != null && fluidStack.amount > 0) return false;
-            }
+            if (!fluidInventory.isEmpty()) return fluidInventory.get(0) == null || fluidInventory.get(0).amount <= 0;
 
             return true;
         }