Only update fluid display items when necessary

Signed-off-by: Glease <4586901+Glease@users.noreply.github.com>

3 files changed, 17 insertions, 2 deletions

diff --git a/src/main/java/gregtech/api/gui/GT_Container.java b/src/main/java/gregtech/api/gui/GT_Container.java
index 4ce583cff5..671d68b917 100644
--- a/src/main/java/gregtech/api/gui/GT_Container.java
+++ b/src/main/java/gregtech/api/gui/GT_Container.java
@@ -26,6 +26,7 @@ public class GT_Container extends Container {
 
         mTileEntity = aTileEntityInventory;
         mPlayerInventory = aPlayerInventory;
+        mTileEntity.openInventory();
     }
 
     /**
@@ -468,6 +469,7 @@ public class GT_Container extends Container {
     public void onContainerClosed(EntityPlayer par1EntityPlayer) {
         try {
             super.onContainerClosed(par1EntityPlayer);
+            mTileEntity.closeInventory();
         } catch (Throwable e) {
             e.printStackTrace(GT_Log.err);
         }
diff --git a/src/main/java/gregtech/api/metatileentity/implementations/GT_MetaTileEntity_BasicMachine.java b/src/main/java/gregtech/api/metatileentity/implementations/GT_MetaTileEntity_BasicMachine.java
index 4775158319..bf9303180e 100644
--- a/src/main/java/gregtech/api/metatileentity/implementations/GT_MetaTileEntity_BasicMachine.java
+++ b/src/main/java/gregtech/api/metatileentity/implementations/GT_MetaTileEntity_BasicMachine.java
@@ -577,7 +577,7 @@ public abstract class GT_MetaTileEntity_BasicMachine extends GT_MetaTileEntity_B
             getBaseMetaTileEntity().setFrontFacing(getBaseMetaTileEntity().getBackFacing());
         }
 
-        if (displaysInputFluid()) {
+        if (mOpenerCount > 0 && displaysInputFluid()) {
             int tDisplayStackSlot = OTHER_SLOT_COUNT + mInputSlotCount + mOutputItems.length;
             if (getFillableStack() == null) {
                 if (ItemList.Display_Fluid.isStackEqual(mInventory[tDisplayStackSlot], true, true))
diff --git a/src/main/java/gregtech/api/metatileentity/implementations/GT_MetaTileEntity_BasicTank.java b/src/main/java/gregtech/api/metatileentity/implementations/GT_MetaTileEntity_BasicTank.java
index 69ccd3ef48..44bae7dc98 100644
--- a/src/main/java/gregtech/api/metatileentity/implementations/GT_MetaTileEntity_BasicTank.java
+++ b/src/main/java/gregtech/api/metatileentity/implementations/GT_MetaTileEntity_BasicTank.java
@@ -21,6 +21,7 @@ import net.minecraftforge.fluids.FluidTankInfo;
 public abstract class GT_MetaTileEntity_BasicTank extends GT_MetaTileEntity_TieredMachineBlock {
 
     public FluidStack mFluid;
+    protected int mOpenerCount;
 
     /**
      * @param aInvSlotCount should be 3
@@ -133,12 +134,24 @@ public abstract class GT_MetaTileEntity_BasicTank extends GT_MetaTileEntity_Tier
     }
 
     @Override
+    public void onOpenGUI() {
+        super.onOpenGUI();
+        mOpenerCount++;
+    }
+
+    @Override
+    public void onCloseGUI() {
+        super.onCloseGUI();
+        mOpenerCount--;
+    }
+
+    @Override
     public void onPreTick(IGregTechTileEntity aBaseMetaTileEntity, long aTick) {
         if (aBaseMetaTileEntity.isServerSide()) {
             if (isFluidChangingAllowed() && getFillableStack() != null && getFillableStack().amount <= 0)
                 setFillableStack(null);
 
-            if (displaysItemStack() && getStackDisplaySlot() >= 0 && getStackDisplaySlot() < mInventory.length) {
+            if (mOpenerCount > 0 && displaysItemStack() && getStackDisplaySlot() >= 0 && getStackDisplaySlot() < mInventory.length) {
                 if (getDisplayedFluid() == null) {
                     if (ItemList.Display_Fluid.isStackEqual(mInventory[getStackDisplaySlot()], true, true))
                         mInventory[getStackDisplaySlot()] = null;