Allow toolbelt to fix maintenance in-world and prevent merge crafting

Author: M-W-K

src/main/java/gregtech/api/items/toolitem/ItemGTToolbelt.java

@@ -4,6 +4,7 @@
 import gregtech.api.items.IDyeableItem;
 import gregtech.api.items.gui.ItemUIFactory;
 import gregtech.api.items.toolitem.behavior.IToolBehavior;
+import gregtech.api.metatileentity.MetaTileEntityHolder;
 import gregtech.api.mui.GTGuiTextures;
 import gregtech.api.mui.GTGuis;
 import gregtech.api.unification.material.Material;
@@ -12,6 +13,7 @@
 import gregtech.api.unification.material.properties.ToolProperty;
 import gregtech.api.util.LocalizationUtils;
 import gregtech.common.items.behaviors.ColorSprayBehaviour;
+import gregtech.common.metatileentities.multi.multiblockpart.MetaTileEntityMaintenanceHatch;
 import gregtech.core.network.packets.PacketToolbeltSelectionChange;
 
 import net.minecraft.block.state.IBlockState;
@@ -393,9 +395,15 @@ public void setSelectedTool(@Nullable Integer slot, ItemStack stack) {
                                                     @NotNull BlockPos pos, @NotNull EnumFacing side, float hitX,
                                                     float hitY, float hitZ, @NotNull EnumHand hand) {
         EnumActionResult result = IDyeableItem.super.onItemUseFirst(player, world, pos, side, hitX, hitY, hitZ, hand);
-        if (result == EnumActionResult.PASS)
+        if (result == EnumActionResult.PASS) {
+            ToolStackHandler handler = getHandler(player.getHeldItem(hand));
+            if (handler.getSelectedSlot() == null && world.getTileEntity(pos) instanceof MetaTileEntityHolder holder &&
+                    holder.getMetaTileEntity() instanceof MetaTileEntityMaintenanceHatch maintenance) {
+                maintenance.fixMaintenanceProblems(player);
+                return EnumActionResult.SUCCESS;
+            }
             return super.onItemUseFirst(player, world, pos, side, hitX, hitY, hitZ, hand);
-        else return result;
+        } else return result;
     }
 
     @Override

src/main/java/gregtech/common/metatileentities/multi/multiblockpart/MetaTileEntityMaintenanceHatch.java

@@ -197,7 +197,7 @@ public void update() {
      * 
      * @param entityPlayer the player performing the fixing
      */
-    private void fixMaintenanceProblems(@Nullable EntityPlayer entityPlayer) {
+    public void fixMaintenanceProblems(@Nullable EntityPlayer entityPlayer) {
         if (!(this.getController() instanceof IMaintenance))
             return;
 

src/main/java/gregtech/mixins/minecraft/RecipeRepairItemMixin.java

@@ -1,6 +1,7 @@
 package gregtech.mixins.minecraft;
 
 import gregtech.api.items.toolitem.IGTTool;
+import gregtech.api.items.toolitem.ItemGTToolbelt;
 import gregtech.api.items.toolitem.ToolHelper;
 
 import net.minecraft.inventory.InventoryCrafting;
@@ -36,7 +37,8 @@ public class RecipeRepairItemMixin {
         ItemStack itemstack1 = list.get(0);
         if (itemstack.getItem() instanceof IGTTool first &&
                 itemstack1.getItem() instanceof IGTTool second) {
-            if (first.isElectric() || second.isElectric()) {
+            if (first.isElectric() || second.isElectric() ||
+                    first instanceof ItemGTToolbelt || second instanceof ItemGTToolbelt) {
                 cir.setReturnValue(false);
             } else {
                 cir.setReturnValue(first.getToolMaterial(itemstack) == second.getToolMaterial(itemstack1));