1 files changed, 29 insertions, 48 deletions

diff --git a/src/main/java/gregtech/common/covers/GT_Cover_ItemMeter.java b/src/main/java/gregtech/common/covers/GT_Cover_ItemMeter.java
index 82dffaf7a8..c894857b32 100644
--- a/src/main/java/gregtech/common/covers/GT_Cover_ItemMeter.java
+++ b/src/main/java/gregtech/common/covers/GT_Cover_ItemMeter.java
@@ -74,66 +74,47 @@ public class GT_Cover_ItemMeter extends GT_CoverBehaviorBase<GT_Cover_ItemMeter.
         return false;
     }
 
-    @Override
-    protected ItemMeterData doCoverThingsImpl(
-            byte aSide,
-            byte aInputRedstone,
-            int aCoverID,
-            ItemMeterData aCoverVariable,
-            ICoverable aTileEntity,
-            long aTimer) {
-        long tMax = 0;
-        long tUsed = 0;
-        IMetaTileEntity mte = ((IGregTechTileEntity) aTileEntity).getMetaTileEntity();
+    public static byte computeSignalBasedOnItems(
+            ICoverable tileEntity, boolean inverted, int threshold, int slot, int side) {
+        long max = 0;
+        long used = 0;
+        IMetaTileEntity mte = ((IGregTechTileEntity) tileEntity).getMetaTileEntity();
         if (mte instanceof GT_MetaTileEntity_DigitalChestBase) {
             GT_MetaTileEntity_DigitalChestBase dc = (GT_MetaTileEntity_DigitalChestBase) mte;
-            tMax = dc.getMaxItemCount(); // currently it is limited by int, but there is not much reason for that
-            ItemStack[] inv = dc.getStoredItemData();
-            if (inv != null && inv.length > 1 && inv[1] != null) tUsed = inv[1].stackSize;
+            max = dc.getMaxItemCount();
+            used = dc.getProgresstime();
         } else if (GregTech_API.mAE2 && mte instanceof GT_MetaTileEntity_Hatch_OutputBus_ME) {
             if (((GT_MetaTileEntity_Hatch_OutputBus_ME) mte).isLastOutputFailed()) {
-                tMax = 64;
-                tUsed = 64;
+                max = 64;
+                used = 64;
             }
         } else {
-            int[] tSlots = aCoverVariable.slot >= 0
-                    ? new int[] {aCoverVariable.slot}
-                    : aTileEntity.getAccessibleSlotsFromSide(aSide);
-
-            for (int i : tSlots) {
-                if (i >= 0 && i < aTileEntity.getSizeInventory()) {
-                    tMax += 64;
-                    ItemStack tStack = aTileEntity.getStackInSlot(i);
-                    if (tStack != null) tUsed += (tStack.stackSize << 6) / tStack.getMaxStackSize();
+            int[] slots = slot >= 0 ? new int[] {slot} : tileEntity.getAccessibleSlotsFromSide(side);
+
+            for (int i : slots) {
+                if (i >= 0 && i < tileEntity.getSizeInventory()) {
+                    max += 64;
+                    ItemStack stack = tileEntity.getStackInSlot(i);
+                    if (stack != null) used += ((long) stack.stackSize << 6) / stack.getMaxStackSize();
                 }
             }
         }
 
-        long redstoneSignal;
-        if (tUsed == 0L) {
-            // nothing
-            redstoneSignal = 0;
-        } else if (tUsed >= tMax) {
-            // full
-            redstoneSignal = 15;
-        } else {
-            // 1-14 range
-            redstoneSignal = 1 + (14 * tUsed) / tMax;
-        }
-
-        if (aCoverVariable.inverted) {
-            redstoneSignal = 15 - redstoneSignal;
-        }
+        return GT_Utility.convertRatioToRedstone(used, max, threshold, inverted);
+    }
 
-        if (aCoverVariable.threshold > 0) {
-            if (aCoverVariable.inverted && tUsed >= aCoverVariable.threshold) {
-                redstoneSignal = 0;
-            } else if (!aCoverVariable.inverted && tUsed < aCoverVariable.threshold) {
-                redstoneSignal = 0;
-            }
-        }
+    @Override
+    protected ItemMeterData doCoverThingsImpl(
+            byte aSide,
+            byte aInputRedstone,
+            int aCoverID,
+            ItemMeterData aCoverVariable,
+            ICoverable aTileEntity,
+            long aTimer) {
+        byte signal = computeSignalBasedOnItems(
+                aTileEntity, aCoverVariable.inverted, aCoverVariable.threshold, aCoverVariable.slot, aSide);
+        aTileEntity.setOutputRedstoneSignal(aSide, signal);
 
-        aTileEntity.setOutputRedstoneSignal(aSide, (byte) redstoneSignal);
         return aCoverVariable;
     }