2 files changed, 52 insertions, 0 deletions
diff --git a/src/main/java/gregtech/api/util/GT_CoverBehaviorBase.java b/src/main/java/gregtech/api/util/GT_CoverBehaviorBase.java
index efbff79957..1092a24307 100644
--- a/src/main/java/gregtech/api/util/GT_CoverBehaviorBase.java
+++ b/src/main/java/gregtech/api/util/GT_CoverBehaviorBase.java
@@ -131,6 +131,20 @@ public abstract class GT_CoverBehaviorBase<T extends ISerializableObject> {
     }
 
     /**
+     * Called before receiving data from network. Use {@link ICoverable#isClientSide()} to determine the side.
+     */
+    public final void preDataChanged(
+            byte aSide,
+            int aCoverID,
+            int aNewCoverId,
+            ISerializableObject aCoverVariable,
+            ISerializableObject aNewCoverVariable,
+            ICoverable aTileEntity) {
+        preDataChangedImpl(
+                aSide, aCoverID, aNewCoverId, forceCast(aCoverVariable), forceCast(aNewCoverVariable), aTileEntity);
+    }
+
+    /**
      * Called upon cover being removed. Called on both server and client.
      */
     public final void onDropped(byte aSide, int aCoverID, ISerializableObject aCoverVariable, ICoverable aTileEntity) {
@@ -222,6 +236,15 @@ public abstract class GT_CoverBehaviorBase<T extends ISerializableObject> {
     }
 
     /**
+     * Called upon Base TE being destroyed (once getDrops is called),
+     * thus getting called only when destroyed in survival.
+     */
+    public final void onBaseTEDestroyed(
+            byte aSide, int aCoverID, ISerializableObject aCoverVariable, ICoverable aTileEntity) {
+        onBaseTEDestroyedImpl(aSide, aCoverID, forceCast(aCoverVariable), aTileEntity);
+    }
+
+    /**
      * Gives a small Text for the status of the Cover.
      */
     public final String getDescription(
@@ -410,8 +433,13 @@ public abstract class GT_CoverBehaviorBase<T extends ISerializableObject> {
 
     protected void onDataChangedImpl(byte aSide, int aCoverID, T aCoverVariable, ICoverable aTileEntity) {}
 
+    protected void preDataChangedImpl(
+            byte aSide, int aCoverID, int aNewCoverId, T aCoverVariable, T aNewCoverVariable, ICoverable aTileEntity) {}
+
     protected void onDroppedImpl(byte aSide, int aCoverID, T aCoverVariable, ICoverable aTileEntity) {}
 
+    protected void onBaseTEDestroyedImpl(byte aSide, int aCoverID, T aCoverVariable, ICoverable aTileEntity) {}
+
     protected boolean isRedstoneSensitiveImpl(
             byte aSide, int aCoverID, T aCoverVariable, ICoverable aTileEntity, long aTimer) {
         return true;
diff --git a/src/main/java/gregtech/api/util/GT_Utility.java b/src/main/java/gregtech/api/util/GT_Utility.java
index 270619363f..c9aa55d291 100644
--- a/src/main/java/gregtech/api/util/GT_Utility.java
+++ b/src/main/java/gregtech/api/util/GT_Utility.java
@@ -4276,6 +4276,30 @@ public class GT_Utility {
         for (int i = 0; i < 25; i++) if (itemStack.isItemEqual(GT_Utility.getIntegratedCircuit(i))) return true;
         return false;
     }
+public static byte convertRatioToRedstone(long used, long max, int threshold, boolean inverted) {
+        byte signal;
+        if (used <= 0) { // Empty
+            signal = 0;
+        } else if (used >= max) { // Full
+            signal = 15;
+        } else { // Range 1-14
+            signal = (byte) (1 + (14 * used) / max);
+        }
+
+        if (inverted) {
+            signal = (byte) (15 - signal);
+        }
+
+        if (threshold > 0) {
+            if (inverted && used >= threshold) {
+                return 0;
+            } else if (!inverted && used < threshold) {
+                return 0;
+            }
+        }
+
+        return signal;
+    }
 
     @AutoValue
     public abstract static class ItemId {