Add property override so controller energy status is rendered correctly.

src/main/java/com/raoulvdberge/refinedstorage/item/blockitem/ControllerBlockItem.java

@@ -2,13 +2,24 @@ package com.raoulvdberge.refinedstorage.item.blockitem;
 
 import com.raoulvdberge.refinedstorage.RS;
 import com.raoulvdberge.refinedstorage.block.ControllerBlock;
+import com.raoulvdberge.refinedstorage.tile.ControllerTile;
 import net.minecraft.item.Item;
+import net.minecraft.util.ResourceLocation;
+import net.minecraftforge.energy.CapabilityEnergy;
+import net.minecraftforge.energy.IEnergyStorage;
 
-// TODO: Set energy state on controller item texture...
 public class ControllerBlockItem extends EnergyBlockItem {
     public ControllerBlockItem(ControllerBlock block) {
         super(block, new Item.Properties().group(RS.MAIN_GROUP).maxStackSize(1), block.getType() == ControllerBlock.Type.CREATIVE, () -> RS.CONFIG.getController().getCapacity());
 
         this.setRegistryName(block.getRegistryName());
+        this.addPropertyOverride(new ResourceLocation("energy_type"), (stack, world, entity) -> {
+            IEnergyStorage storage = stack.getCapability(CapabilityEnergy.ENERGY).orElse(null);
+            if (storage != null) {
+                return ControllerTile.getEnergyType(storage.getEnergyStored(), storage.getMaxEnergyStored()).ordinal();
+            }
+
+            return ControllerBlock.EnergyType.OFF.ordinal();
+        });
     }
 }

src/main/java/com/raoulvdberge/refinedstorage/tile/ControllerTile.java

@@ -221,7 +221,6 @@ public class ControllerTile extends TileBase implements ITickableTileEntity, INe
                 }
             }
 
-            /*
             if (type == ControllerBlock.Type.NORMAL) {
                 if (!RS.CONFIG.getController().getUseEnergy()) {
                     this.energy.setStored(this.energy.getCapacity());
@@ -232,8 +231,7 @@ public class ControllerTile extends TileBase implements ITickableTileEntity, INe
                 }
             } else if (type == ControllerBlock.Type.CREATIVE) {
                 this.energy.setStored(this.energy.getCapacity());
-            }*/
-            this.energy.setStored(5000);
+            }
 
             boolean canRun = canRun();
 
@@ -587,7 +585,7 @@ public class ControllerTile extends TileBase implements ITickableTileEntity, INe
         return getEnergyType(this.energy.getStored(), this.energy.getCapacity());
     }
 
-    private static ControllerBlock.EnergyType getEnergyType(int stored, int capacity) {
+    public static ControllerBlock.EnergyType getEnergyType(int stored, int capacity) {
         int energy = getEnergyScaled(stored, capacity, 100);
 
         if (energy <= 0) {

src/main/resources/assets/refinedstorage/models/item/controller.json

@@ -1,3 +1,28 @@
 {
-  "parent": "refinedstorage:block/controller/controller_off"
+  "overrides": [
+    {
+      "predicate": {
+        "energy_type": 0
+      },
+      "model": "refinedstorage:block/controller/controller_off"
+    },
+    {
+      "predicate": {
+        "energy_type": 1
+      },
+      "model": "refinedstorage:block/controller/controller_nearly_off"
+    },
+    {
+      "predicate": {
+        "energy_type": 2
+      },
+      "model": "refinedstorage:block/controller/controller_nearly_on"
+    },
+    {
+      "predicate": {
+        "energy_type": 3
+      },
+      "model": "refinedstorage:block/controller/controller_on"
+    }
+  ]
 }