More inventory implementation

src/resonantinduction/base/SetUtil.java

@@ -145,6 +145,16 @@ public class SetUtil
 		return toReturn;
 	}
 	
+	public static <V> V getTop(Set<V> set)
+	{
+		for(V obj : set)
+		{
+			return obj;
+		}
+		
+		return null;
+	}
+	
 	/**
 	 * Returns a List of a Set, while maintaining all it's objects.
 	 * @param set - set to turn into a list

src/resonantinduction/battery/BatteryManager.java

@@ -1,16 +1,11 @@
 package resonantinduction.battery;
 
-import java.util.ArrayList;
 import java.util.EnumSet;
-import java.util.HashMap;
-import java.util.HashSet;
-import java.util.Map;
-import java.util.Set;
 
+import net.minecraft.inventory.IInventory;
+import net.minecraft.inventory.Slot;
 import net.minecraft.item.ItemStack;
-import net.minecraft.world.World;
+import resonantinduction.api.IBattery;
-import net.minecraftforge.fluids.FluidStack;
-import resonantinduction.base.Vector3;
 import cpw.mods.fml.common.ITickHandler;
 import cpw.mods.fml.common.TickType;
 
@@ -41,4 +36,32 @@ public class BatteryManager implements ITickHandler
 	{
 		return "BatteryMultiblockManager";
 	}
+	
+	public static class SlotOut extends Slot
+	{
+		public SlotOut(IInventory inventory, int index, int x, int y)
+		{
+			super(inventory, index, x, y);
+		}
+		
+		@Override
+		public boolean isItemValid(ItemStack itemstack)
+		{
+			return false;
+		}
+	}
+	
+	public static class SlotBattery extends Slot
+	{
+		public SlotBattery(IInventory inventory, int index, int x, int y)
+		{
+			super(inventory, index, x, y);
+		}
+		
+		@Override
+		public boolean isItemValid(ItemStack itemstack)
+		{
+			return itemstack.getItem() instanceof IBattery;
+		}
+	}
 }

src/resonantinduction/battery/TileEntityBattery.java

@@ -53,6 +53,7 @@ public class TileEntityBattery extends TileEntityBase implements IPacketReceiver
 				if(structure.inventory.size() < structure.getMaxCells())
 				{
 					structure.inventory.add(structure.visibleInventory[0]);
+					structure.visibleInventory[0] = null;
 					structure.sortInventory();
 				}
 			}
@@ -164,20 +165,26 @@ public class TileEntityBattery extends TileEntityBase implements IPacketReceiver
 	
 	public float getEnergyStored()
 	{
-		float energy = 0;
+		if(!worldObj.isRemote)
-		
-		for (ItemStack itemStack : structure.inventory)
 		{
-			if (itemStack != null)
+			float energy = 0;
+			
+			for (ItemStack itemStack : structure.inventory)
 			{
-				if (itemStack.getItem() instanceof IBattery)
+				if (itemStack != null)
 				{
-					energy += ((IBattery) itemStack.getItem()).getEnergyStored(itemStack);
+					if (itemStack.getItem() instanceof IBattery)
+					{
+						energy += ((IBattery) itemStack.getItem()).getEnergyStored(itemStack);
+					}
 				}
 			}
+			
+			return energy;
+		}
+		else {
+			return clientEnergy;
 		}
-		
-		return energy;
 	}
 
 	@Override
@@ -186,6 +193,9 @@ public class TileEntityBattery extends TileEntityBase implements IPacketReceiver
 		try {
 			structure.isMultiblock = input.readBoolean();
 			
+			clientEnergy = input.readFloat();
+			clientCells = input.readInt();
+			
 			if(structure.isMultiblock)
 			{
 				structure.height = input.readInt();
@@ -198,9 +208,12 @@ public class TileEntityBattery extends TileEntityBase implements IPacketReceiver
 	@Override
 	public ArrayList getNetworkedData(ArrayList data)
 	{
-		data.add(structure != null);
+		data.add(structure.isMultiblock);
 		
-		if(structure != null)
+		data.add(getEnergyStored());
+		data.add(structure.inventory.size());
+		
+		if(structure.isMultiblock)
 		{
 			data.add(structure.height);
 			data.add(structure.length);
@@ -219,7 +232,17 @@ public class TileEntityBattery extends TileEntityBase implements IPacketReceiver
 	@Override
 	public ItemStack getStackInSlot(int i)
 	{
-		return null;
+		if(i == 0)
+		{
+			return structure.visibleInventory[0];
+		}
+		else if(i == 1)
+		{
+			return SetUtil.getTop(structure.inventory);
+		}
+		else {
+			return structure.visibleInventory[i-1];
+		}
 	}
 
 	@Override
@@ -231,13 +254,26 @@ public class TileEntityBattery extends TileEntityBase implements IPacketReceiver
 	@Override
 	public ItemStack getStackInSlotOnClosing(int i) 
 	{
-		return null;
+		return getStackInSlot(i);
 	}
 
 	@Override
 	public void setInventorySlotContents(int i, ItemStack itemstack) 
 	{
-		
+		if(i == 0)
+		{
+			structure.visibleInventory[0] = itemstack;
+		}
+		else if(i == 1)
+		{
+			if(itemstack == null)
+			{
+				structure.inventory.remove(SetUtil.getTop(structure.inventory));
+			}
+		}
+		else {
+			structure.visibleInventory[i-1] = itemstack;
+		}
 	}
 
 	@Override