3 files changed, 78 insertions, 0 deletions
diff --git a/src/Java/gtPlusPlus/core/slots/SlotFrame.java b/src/Java/gtPlusPlus/core/slots/SlotFrame.java
new file mode 100644
index 0000000000..13bc8fa717
--- /dev/null
+++ b/src/Java/gtPlusPlus/core/slots/SlotFrame.java
@@ -0,0 +1,25 @@
+package gtPlusPlus.core.slots;
+
+import net.minecraft.inventory.IInventory;
+import net.minecraft.inventory.Slot;
+import net.minecraft.item.ItemStack;
+import forestry.api.apiculture.IHiveFrame;
+
+public class SlotFrame extends Slot{
+
+	public SlotFrame(IInventory inventory, int x, int y, int z) {
+		super(inventory, x, y, z);
+
+	}
+
+	@Override
+	public boolean isItemValid(ItemStack itemstack) {
+		return itemstack.getItem() instanceof IHiveFrame;
+	}
+
+	@Override
+	public int getSlotStackLimit() {
+		return 1;
+	}
+
+}
diff --git a/src/Java/gtPlusPlus/core/slots/SlotItemBackpackInv.java b/src/Java/gtPlusPlus/core/slots/SlotItemBackpackInv.java
new file mode 100644
index 0000000000..7a22086949
--- /dev/null
+++ b/src/Java/gtPlusPlus/core/slots/SlotItemBackpackInv.java
@@ -0,0 +1,28 @@
+package gtPlusPlus.core.slots;
+
+import gtPlusPlus.core.item.base.BaseItemBackpack;
+import net.minecraft.inventory.IInventory;
+import net.minecraft.inventory.Slot;
+import net.minecraft.item.ItemStack;
+
+public class SlotItemBackpackInv extends Slot
+{
+	public SlotItemBackpackInv(IInventory inv, int index, int xPos, int yPos)
+	{
+		super(inv, index, xPos, yPos);
+	}
+
+	// This is the only method we need to override so that
+	// we can't place our inventory-storing Item within
+	// its own inventory (thus making it permanently inaccessible)
+	// as well as preventing abuse of storing backpacks within backpacks
+	/**
+	 * Check if the stack is a valid item for this slot.
+	 */
+	@Override
+	public boolean isItemValid(ItemStack itemstack)
+	{
+		// Everything returns true except an instance of our Item
+		return !(itemstack.getItem() instanceof BaseItemBackpack);
+	}
+}
+\ No newline at end of file
diff --git a/src/Java/gtPlusPlus/core/slots/SlotRTG.java b/src/Java/gtPlusPlus/core/slots/SlotRTG.java
new file mode 100644
index 0000000000..1f16463de2
--- /dev/null
+++ b/src/Java/gtPlusPlus/core/slots/SlotRTG.java
@@ -0,0 +1,25 @@
+package gtPlusPlus.core.slots;
+
+import ic2.core.Ic2Items;
+import net.minecraft.inventory.IInventory;
+import net.minecraft.inventory.Slot;
+import net.minecraft.item.ItemStack;
+
+public class SlotRTG extends Slot{
+
+	public SlotRTG(IInventory inventory, int x, int y, int z) {
+		super(inventory, x, y, z);
+
+	}
+
+	@Override
+	public boolean isItemValid(ItemStack itemstack) {
+		return itemstack.getItem().getClass() == Ic2Items.RTGPellets.getItem().getClass();
+	}
+
+	@Override
+	public int getSlotStackLimit() {
+		return 1;
+	}
+
+}