Energy Cell Item Models (#44)

* Added energy cell item models.

* Removed the client-side only interface and moved to a method in AEBaseBlock instead.

src/main/java/appeng/block/networking/BlockEnergyCell.java

@@ -25,6 +25,8 @@ import java.util.List;
 import net.minecraft.block.properties.IProperty;
 import net.minecraft.block.properties.PropertyInteger;
 import net.minecraft.block.state.IBlockState;
+import net.minecraft.client.renderer.ItemMeshDefinition;
+import net.minecraft.client.renderer.block.model.ModelResourceLocation;
 import net.minecraft.creativetab.CreativeTabs;
 import net.minecraft.item.Item;
 import net.minecraft.item.ItemStack;
@@ -32,6 +34,7 @@ import net.minecraft.nbt.NBTTagCompound;
 import net.minecraftforge.fml.relauncher.Side;
 import net.minecraftforge.fml.relauncher.SideOnly;
 
+import appeng.api.implementations.items.IAEItemPowerStorage;
 import appeng.block.AEBaseItemBlock;
 import appeng.block.AEBaseItemBlockChargeable;
 import appeng.block.AEBaseTileBlock;
@@ -96,4 +99,40 @@ public class BlockEnergyCell extends AEBaseTileBlock
 	{
 		return AEBaseItemBlockChargeable.class;
 	}
+
+	/**
+	 * Helper method that returns the energy fill factor (between 0 and 1) of a given item stack.
+	 * Returns 0 if the item stack has no fill factor.
+	 */
+	private static double getFillFactor( ItemStack is ) {
+		if( !( is.getItem() instanceof IAEItemPowerStorage ) )
+		{
+			return 0;
+		}
+
+		AEBaseItemBlockChargeable itemChargeable = (AEBaseItemBlockChargeable) is.getItem();
+		double curPower = itemChargeable.getAECurrentPower( is );
+		double maxPower = itemChargeable.getAEMaxPower( is );
+
+		return curPower / maxPower;
+	}
+
+	/**
+	 * Determines which version of the energy cell model should be used depending on the fill factor
+	 * of the item stack.
+	 */
+	@SideOnly( Side.CLIENT )
+	@Override
+	public ItemMeshDefinition getItemMeshDefinition()
+	{
+		return is -> {
+			double fillFactor = getFillFactor( is );
+
+			int storageLevel = TileEnergyCell.getStorageLevelFromFillFactor(fillFactor);
+
+			return new ModelResourceLocation( "appliedenergistics2:tile.BlockEnergyCell", "fullness=" + storageLevel );
+
+		};
+	}
+
 }