Allow machine interface to pass a signal through to the multiblock

src/main/java/blusunrize/immersiveengineering/client/gui/MachineInterfaceScreen.java

@@ -30,11 +30,9 @@
 
 import javax.annotation.Nullable;
 import java.util.ArrayList;
-import java.util.Arrays;
 import java.util.List;
 import java.util.Optional;
 import java.util.function.IntSupplier;
-import java.util.function.ToIntFunction;
 
 import static blusunrize.immersiveengineering.client.gui.IEContainerScreen.makeTextureLocation;
 
@@ -157,6 +155,15 @@ public void init()
 					}
 			));
 
+			// input color button
+			this.addRenderableWidget(new GuiButtonDyeColor(
+					guiLeft+xSize-40, guiTop+163, 16, 16,
+					() -> blockEntity.inputColor.getId(), TEXTURE, 192, 18,
+					btn -> sendInputColor(btn.getNextState()),
+					ItemBatcherScreen::gatherRedstoneTooltip
+			));
+
+			// scroll buttons
 			this.addRenderableWidget(new GuiButtonIE(
 					guiLeft+xSize-20, guiTop+12, 16, 12, Component.empty(), TEXTURE, 224, 18,
 					(IIEPressable<Button>)btn -> this.rowList.scrollUp()
@@ -203,6 +210,16 @@ private void sendConfig(int idx, @Nullable MachineInterfaceConfig<?> config)
 		PacketDistributor.SERVER.noArg().send(new MessageBlockEntitySync(blockEntity, message));
 	}
 
+	private void sendInputColor(DyeColor col)
+	{
+		//update client
+		blockEntity.inputColor = col;
+		//update server
+		CompoundTag message = new CompoundTag();
+		message.putInt("inputColor", col.getId());
+		PacketDistributor.SERVER.noArg().send(new MessageBlockEntitySync(blockEntity, message));
+	}
+
 	@Override
 	protected void drawGuiContainerBackgroundLayer(GuiGraphics graphics, int mouseX, int mouseY, float partialTick)
 	{
@@ -231,6 +248,14 @@ protected void drawGuiContainerForegroundLayer(GuiGraphics graphics, int mouseX,
 						guiLeft+12, yPos+i*font.lineHeight, 0x555555, false
 				);
 		}
+		else
+		{
+			Component text = Component.translatable(Lib.GUI_CONFIG+"machine_interface.input_color");
+			int textWidth = font.width(text);
+			graphics.drawString(font, text,
+					guiLeft+xSize-48-textWidth, guiTop+167, 0xE0E0E0, false
+			);
+		}
 
 		ArrayList<Component> tooltip = new ArrayList<>();
 		for(GuiEventListener w : children())

src/main/java/blusunrize/immersiveengineering/common/blocks/wooden/MachineInterfaceBlockEntity.java

@@ -18,6 +18,7 @@
 import blusunrize.immersiveengineering.common.blocks.BlockCapabilityRegistration.BECapabilityRegistrar;
 import blusunrize.immersiveengineering.common.blocks.IEBaseBlockEntity;
 import blusunrize.immersiveengineering.common.blocks.IEBlockInterfaces.IPlayerInteraction;
+import blusunrize.immersiveengineering.common.blocks.IEBlockInterfaces.IRedstoneOutput;
 import blusunrize.immersiveengineering.common.blocks.IEBlockInterfaces.IStateBasedDirectional;
 import blusunrize.immersiveengineering.common.blocks.PlacementLimitation;
 import blusunrize.immersiveengineering.common.blocks.ticking.IEServerTickableBE;
@@ -41,7 +42,7 @@
 import java.util.List;
 
 public class MachineInterfaceBlockEntity extends IEBaseBlockEntity implements IEServerTickableBE,
-		IPlayerInteraction, IStateBasedDirectional
+		IPlayerInteraction, IStateBasedDirectional, IRedstoneOutput
 {
 	public final IEBlockCapabilityCache<IMachineInterfaceConnection> machine = IEBlockCapabilityCaches.forNeighbor(
 			IMachineInterfaceConnection.CAPABILITY, this, this::getFacing
@@ -51,6 +52,9 @@ public class MachineInterfaceBlockEntity extends IEBaseBlockEntity implements IE
 
 	private final int[] outputs = new int[DyeColor.values().length];
 
+	public DyeColor inputColor = DyeColor.WHITE;
+	private byte inputSignalStrength = 0;
+
 	public MachineInterfaceBlockEntity(BlockPos pos, BlockState state)
 	{
 		super(IEBlockEntities.MACHINE_INTERFACE.get(), pos, state);
@@ -83,6 +87,7 @@ public void readCustomNBT(CompoundTag nbt, boolean descPacket)
 		configurations.clear();
 		for(int i = 0; i < list.size(); i++)
 			configurations.add(MachineInterfaceConfig.readFromNBT(list.getCompound(i)));
+		inputColor = DyeColor.byId(nbt.getInt("inputColor"));
 	}
 
 	@Override
@@ -91,6 +96,7 @@ public void writeCustomNBT(CompoundTag nbt, boolean descPacket)
 		ListTag list = new ListTag();
 		configurations.forEach(conf -> list.add(conf.writeToNBT()));
 		nbt.put("configurations", list);
+		nbt.putInt("inputColor", inputColor.getId());
 	}
 
 	@Override
@@ -106,6 +112,8 @@ public void receiveMessageFromClient(CompoundTag message)
 		}
 		else if(message.getBoolean("delete"))
 			this.configurations.remove(message.getInt("idx"));
+		else if(message.contains("inputColor"))
+			this.inputColor = DyeColor.byId(message.getInt("inputColor"));
 		setChanged();
 		this.markContainingBlockForUpdate(null);
 	}
@@ -133,6 +141,17 @@ public Property<Direction> getFacingProperty()
 
 	private final RedstoneBundleConnection redstoneCap = new RedstoneBundleConnection()
 	{
+		@Override
+		public void onChange(byte[] externalInputs, Direction side)
+		{
+			if(externalInputs[inputColor.getId()]!=inputSignalStrength)
+			{
+				inputSignalStrength = externalInputs[inputColor.getId()];
+				markChunkDirty();
+				markContainingBlockForUpdate(getBlockState());
+			}
+		}
+
 		@Override
 		public void updateInput(byte[] signals, Direction side)
 		{
@@ -149,6 +168,18 @@ public static void registerCapabilities(BECapabilityRegistrar<MachineInterfaceBl
 		);
 	}
 
+	@Override
+	public int getStrongRSOutput(Direction side)
+	{
+		return canConnectRedstone(side)?inputSignalStrength: 0;
+	}
+
+	@Override
+	public boolean canConnectRedstone(Direction side)
+	{
+		return side==getFacing().getOpposite();
+	}
+
 	public static final class MachineInterfaceConfig<T>
 	{
 		private int selectedCheck;

src/main/resources/assets/immersiveengineering/lang/en_us.json

@@ -468,6 +468,7 @@
   "gui.immersiveengineering.config.machine_interface.not_connected": "The Machine Interface is not attached to a valid machine.\nPlease ensure that the interface was placed against the redstone control port of an Immersive Engineering multiblock.",
   "gui.immersiveengineering.config.machine_interface.add": "Add Condition",
   "gui.immersiveengineering.config.machine_interface.remove": "Remove Condition",
+  "gui.immersiveengineering.config.machine_interface.input_color": "Control Signal Input:",
   "gui.immersiveengineering.config.machine_interface.check.basic.active": "Machine Active",
   "gui.immersiveengineering.config.machine_interface.check.basic.item_input": "Item Input",
   "gui.immersiveengineering.config.machine_interface.check.basic.item_output": "Item Output",