made reactor core only able to input items into open slots

Author: Trinsdar

src/main/java/org/gtreimagined/gt4r/reactor/tile/BlockEntityReactorCore.java

@@ -2,6 +2,7 @@
 
 import dev.architectury.networking.NetworkManager;
 import muramasa.antimatter.blockentity.multi.BlockEntityBasicMultiMachine;
+import muramasa.antimatter.capability.IFilterableHandler;
 import muramasa.antimatter.capability.fluid.FluidTanks;
 import muramasa.antimatter.capability.machine.MachineEnergyHandler;
 import muramasa.antimatter.capability.machine.MachineFluidHandler;
@@ -53,7 +54,7 @@
 
 import static org.gtreimagined.gt4r.data.Materials.DistilledWater;
 
-public class BlockEntityReactorCore extends BlockEntityBasicMultiMachine<BlockEntityReactorCore> implements IReactorGrid {
+public class BlockEntityReactorCore extends BlockEntityBasicMultiMachine<BlockEntityReactorCore> implements IReactorGrid, IFilterableHandler {
     public static final int ROW_COUNT = 6;
     public static final int COL_COUNT = 9;
 
@@ -704,6 +705,12 @@ public void addWidgets(GuiInstance instance, IGuiElement parent) {
         }
     }
 
+    @Override
+    public boolean test(SlotType<?> slotType, int slot, ItemStack stack) {
+        int x = slot % COL_COUNT;
+        return x < getColumnCount();
+    }
+
     public static class ReactorFluidHandler extends MachineFluidHandler<BlockEntityReactorCore> {
         public ReactorFluidHandler(BlockEntityReactorCore tile) {
             super(tile);