Clear inventory grid before crafting

craft.lua

@@ -11,7 +11,7 @@ local inventory = component.inventory_controller
 RESULT_SLOT = 4
 
 -- robots inventory is 4 wide and crafting uses the top left portion
-local slot_map = {
+SLOT_MAP = {
     1, 2, 3,
     5, 6, 7,
     9, 10, 11
@@ -177,6 +177,20 @@ local function fetch_item(item, output_slot, count)
     return false
 end
 
+---clear the 3x3 grid of any leftover items
+local function clear_crafting_space()
+    for _, slot in ipairs(SLOT_MAP) do
+        if inventory.getStackInInternalSlot(slot) then
+            robot.select(slot)
+            store_item()
+        end
+    end
+    if inventory.getStackInInternalSlot(RESULT_SLOT) then
+        robot.select(RESULT_SLOT)
+        store_item()
+    end
+end
+
 ---accepts a recipe table containing result and ingredients
 ---@param recipe table
 ---@param count number how many items to craft
@@ -188,7 +202,7 @@ local function craft_single_recipe(recipe, count)
     end
     for i, ingredient in pairs(recipe.shape) do
         -- print('Fetching ' .. ingredient)
-        if not fetch_item(ingredient, slot_map[i], count) then
+        if not fetch_item(ingredient, SLOT_MAP[i], count) then
             print('Failed to fetch ' .. ingredient)
             confirm()
         end
@@ -391,6 +405,8 @@ local function craft_item(search)
         return false
     end
 
+    clear_crafting_space()
+
     -- proceed to crafting the things
     for i, rec in ipairs(crafting_order) do
         print('Step #' .. i .. ' - ' .. rec.result)

recipes.lua

@@ -221,6 +221,20 @@ return {
             'minecraft:cobblestone;0', 'minecraft:redstone;0', 'minecraft:cobblestone;0',
         }
     },
+    -- Sticky Piston
+    ['minecraft:sticky_piston;0'] = {
+        result   = 'minecraft:sticky_piston;0',
+        count    = 1,
+        requires = {
+            ['minecraft:piston;0'] = 1,
+            ['minecraft:slime_ball;0'] = 1,
+        },
+        shape    = {
+            nil, 'minecraft:slime_ball;0', nil,
+            nil, 'minecraft:piston;0', nil,
+            nil, nil, nil,
+        }
+    },
     -- Button
     ['minecraft:stone_button;0'] = {
         result   = 'minecraft:stone_button;0',
@@ -1025,9 +1039,60 @@ return {
             'minecraft:iron_ingot;0', 'opencomputers:material;4', 'minecraft:iron_ingot;0',
         }
     },
+    -- Capacitor
+    ['opencomputers:capacitor;0'] = {
+        result   = 'opencomputers:capacitor;0',
+        count    = 1,
+        requires = {
+            ['minecraft:iron_ingot;0'] = 4,
+            ['opencomputers:material;6'] = 1, -- Transistor
+            ['minecraft:gold_nugget;0'] = 2,
+            ['minecraft:paper;0'] = 1,
+            ['opencomputers:material;4'] = 1, -- Printed Circuit Board
+        },
+        shape    = {
+            'minecraft:iron_ingot;0', 'opencomputers:material;6', 'minecraft:iron_ingot;0',
+            'minecraft:gold_nugget;0', 'minecraft:paper;0', 'minecraft:gold_nugget;0',
+            'minecraft:iron_ingot;0', 'opencomputers:material;4', 'minecraft:iron_ingot;0',
+        }
+    },
 
     -----------------------------------------------------------------------------------------
 
+    -- Chunkloader Upgrade
+    ['opencomputers:upgrade;4'] = {
+        result   = 'opencomputers:upgrade;4;chunkloader upgrade',
+        count    = 1,
+        requires = {
+            ['minecraft:gold_ingot;0'] = 4,
+            ['minecraft:ender_pearl;0'] = 2,
+            ['opencomputers:material;9'] = 2, -- Microchip (Tier 3)
+            ['minecraft:ender_eye;0'] = 1,
+            ['minecraft:obsidian;0'] = 2,
+            ['opencomputers:material;4'] = 1, -- Printed Circuit Board
+        },
+        shape    = {
+            'minecraft:gold_ingot;0', 'minecraft:glass;0', 'minecraft:gold_ingot;0',
+            'opencomputers:material;9', 'minecraft:ender_eye;0', 'opencomputers:material;9',
+            'minecraft:obsidian;0', 'opencomputers:material;4', 'minecraft:obsidian;0',
+        }
+    },
+    -- Angel Upgrade
+    ['opencomputers:upgrade;6'] = {
+        result   = 'opencomputers:upgrade;6;angel upgrade',
+        count    = 1,
+        requires = {
+            ['minecraft:iron_ingot;0'] = 4,
+            ['minecraft:ender_pearl;0'] = 2,
+            ['opencomputers:material;7'] = 2, -- Microchip (Tier 1)
+            ['minecraft:sticky_piston;0'] = 1,
+        },
+        shape    = {
+            'minecraft:iron_ingot;0', 'minecraft:ender_pearl;0', 'minecraft:iron_ingot;0',
+            'opencomputers:material;7', 'minecraft:sticky_piston;0', 'opencomputers:material;7',
+            'minecraft:iron_ingot;0', 'minecraft:ender_pearl;0', 'minecraft:iron_ingot;0',
+        }
+    },
     -- Crafting Upgrade
     ['opencomputers:upgrade;11'] = {
         result   = 'opencomputers:upgrade;11;crafting upgrade',
@@ -1044,6 +1109,22 @@ return {
             'minecraft:iron_ingot;0', 'opencomputers:material;4', 'minecraft:iron_ingot;0',
         }
     },
+    -- Experience Upgrade
+    ['opencomputers:upgrade;15'] = {
+        result   = 'opencomputers:upgrade;15;experience upgrade',
+        count    = 1,
+        requires = {
+            ['minecraft:gold_ingot;0'] = 4,
+            ['opencomputers:material;8'] = 2, -- Microchip (Tier 2)
+            ['minecraft:emerald;0'] = 1,
+            ['opencomputers:material;4'] = 1, -- Printed Circuit Board
+        },
+        shape    = {
+            'minecraft:gold_ingot;0', nil, 'minecraft:gold_ingot;0',
+            'opencomputers:material;8', 'minecraft:emerald;0', 'opencomputers:material;8',
+            'minecraft:gold_ingot;0', 'opencomputers:material;4', 'minecraft:gold_ingot;0',
+        }
+    },
     -- Inventory Upgrade
     ['opencomputers:upgrade;17'] = {
         result   = 'opencomputers:upgrade;17;inventory upgrade',
@@ -1080,6 +1161,57 @@ return {
             'minecraft:gold_ingot;0', 'opencomputers:material;4', 'minecraft:gold_ingot;0',
         }
     },
+    -- Tractor Beam Upgrade
+    ['opencomputers:upgrade;25'] = {
+        result   = 'opencomputers:upgrade;25;tractor beam (magnet) upgrade',
+        count    = 1,
+        requires = {
+            ['minecraft:gold_ingot;0'] = 4,
+            ['minecraft:piston;0'] = 1,
+            ['minecraft:iron_ingot;0'] = 2,
+            ['opencomputers:capacitor;0'] = 1,
+            ['opencomputers:material;9'] = 1, -- Microchip (Tier 3)
+        },
+        shape    = {
+            'minecraft:gold_ingot;0', 'minecraft:piston;0', 'minecraft:gold_ingot;0',
+            'minecraft:iron_ingot;0', 'opencomputers:capacitor;0', 'minecraft:iron_ingot;0',
+            'minecraft:gold_ingot;0', 'opencomputers:material;9', 'minecraft:gold_ingot;0',
+        }
+    },
+    -- Hover Upgrade (Tier 1)
+    ['opencomputers:upgrade;27'] = {
+        result   = 'opencomputers:upgrade;27;hover upgrade 1',
+        count    = 1,
+        requires = {
+            ['minecraft:feather;0'] = 4,
+            ['opencomputers:material;7'] = 1, -- Microchip (Tier 1)
+            ['minecraft:iron_nugget;0'] = 2,
+            ['minecraft:leather;0'] = 1,
+            ['opencomputers:material;4'] = 1, -- Printed Circuit Board
+        },
+        shape    = {
+            'minecraft:feather;0', 'opencomputers:material;7', 'minecraft:feather;0',
+            'minecraft:iron_nugget;0', 'minecraft:leather;0', 'minecraft:iron_nugget;0',
+            'minecraft:feather;0', 'opencomputers:material;4', 'minecraft:feather;0',
+        }
+    },
+    -- Hover Upgrade (Tier 2)
+    ['opencomputers:upgrade;28'] = {
+        result   = 'opencomputers:upgrade;28;hover upgrade 2',
+        count    = 1,
+        requires = {
+            ['minecraft:end_stone;0'] = 4,
+            ['opencomputers:material;8'] = 1, -- Microchip (Tier 2)
+            ['minecraft:gold_nugget;0'] = 2,
+            ['minecraft:iron_ingot;0'] = 1,
+            ['opencomputers:material;4'] = 1, -- Printed Circuit Board
+        },
+        shape    = {
+            'minecraft:end_stone;0', 'opencomputers:material;8', 'minecraft:end_stone;0',
+            'minecraft:gold_nugget;0', 'minecraft:iron_ingot;0', 'minecraft:gold_nugget;0',
+            'minecraft:end_stone;0', 'opencomputers:material;4', 'minecraft:end_stone;0',
+        }
+    },
 
     -----------------------------------------------------------------------------------------