Patient Stalling

- Items on belts now stall under empty-handed Deployers targeting them

src/main/java/com/simibubi/create/content/contraptions/components/deployer/BeltDeployerCallbacks.java

@@ -45,6 +45,11 @@ public class BeltDeployerCallbacks {
 		if (deployerTileEntity.redstoneLocked)
 			return ProcessingResult.PASS;
 
+		DeployerFakePlayer player = deployerTileEntity.getPlayer();
+		ItemStack held = player == null ? ItemStack.EMPTY : player.getMainHandItem();
+
+		if (held.isEmpty())
+			return ProcessingResult.HOLD;
 		if (deployerTileEntity.getRecipe(s.stack) == null)
 			return ProcessingResult.PASS;
 
@@ -60,6 +65,12 @@ public class BeltDeployerCallbacks {
 		BlockState blockState = deployerTileEntity.getBlockState();
 		if (!blockState.hasProperty(FACING) || blockState.getValue(FACING) != Direction.DOWN)
 			return ProcessingResult.PASS;
+
+		DeployerFakePlayer player = deployerTileEntity.getPlayer();
+		ItemStack held = player == null ? ItemStack.EMPTY : player.getMainHandItem();
+		if (held.isEmpty())
+			return ProcessingResult.HOLD;
+
 		IRecipe<?> recipe = deployerTileEntity.getRecipe(s.stack);
 		if (recipe == null)
 			return ProcessingResult.PASS;
@@ -92,6 +103,10 @@ public class BeltDeployerCallbacks {
 					copy.angle = centered ? 180 : Create.RANDOM.nextInt(360);
 					return copy;
 				})
+				.map(t -> {
+					t.locked = false;
+					return t;
+				})
 				.collect(Collectors.toList());
 
 		TransportedItemStack left = transported.copy();