.

packs/macroEngine-Datapack-1.21.2/data/macroengine/function/core/internal/experimental/crafting_ui/check_ingredients.mcfunction

@@ -1,17 +1,17 @@
 # macroengine:core/internal/experimental/crafting_ui/check_ingredients [MACRO]
-# Called `with storage macroengine:engine _crafting_ui.active` — receives
-# the recipe compound (ingredients, result) as macro context. Recursively
-# checks each ingredient is present in sufficient count via
-# `clear @s <item> 0` (count-only, does not remove — see
-# player/inv/count_item.mcfunction for the same trick used elsewhere).
-# Sets _crafting_ui.ok to 0b on the first missing ingredient found.
+# Called `with storage macroengine:engine _crafting_ui.active`.
+# Walks a COPY of ingredients (`_cui_check`) so active.ingredients
+# stays intact for consume_ingredients afterwards.
 
-execute unless data storage macroengine:engine _crafting_ui.active.ingredients[0] run return 0
+execute unless data storage macroengine:engine _cui_check run data modify storage macroengine:engine _cui_check set from storage macroengine:engine _crafting_ui.active.ingredients
 
-data modify storage macroengine:engine _cui_ing set from storage macroengine:engine _crafting_ui.active.ingredients[0]
-data remove storage macroengine:engine _crafting_ui.active.ingredients[0]
+execute unless data storage macroengine:engine _cui_check[0] run return 0
+
+data modify storage macroengine:engine _cui_ing set from storage macroengine:engine _cui_check[0]
+data remove storage macroengine:engine _cui_check[0]
 
 function macroengine:core/internal/experimental/crafting_ui/check_one_ingredient with storage macroengine:engine _cui_ing
 data remove storage macroengine:engine _cui_ing
 
-execute if data storage macroengine:engine _crafting_ui.active.ingredients[0] run function macroengine:core/internal/experimental/crafting_ui/check_ingredients with storage macroengine:engine _crafting_ui.active
+# Continue only while list remains AND we have not already failed.
+execute if data storage macroengine:engine _crafting_ui{ok:1b} if data storage macroengine:engine _cui_check[0] run function macroengine:core/internal/experimental/crafting_ui/check_ingredients with storage macroengine:engine _crafting_ui.active

packs/macroEngine-Datapack-1.21.2/data/macroengine/function/core/internal/experimental/crafting_ui/check_one_ingredient.mcfunction

@@ -4,5 +4,10 @@
 # how many the caller holds, same trick as player/inv/count_item.mcfunction.
 
 scoreboard players set $cui_have macroengine.tmp 0
-$execute store result score $cui_have macroengine.tmp run clear @s $(item) 1
+$execute store result score $cui_have macroengine.tmp run clear @s $(item) 0
+
+# Fail if held count is below required.
 $execute unless score $cui_have macroengine.tmp matches $(count).. run data modify storage macroengine:engine _crafting_ui.ok set value 0b
+
+# Always report the probe so the player can see why a craft failed.
+$tellraw @s ["",{"text":"[MACROENGINE] ","color":"#00AAAA","bold":true},{"text":"check ","color":"gray"},{"text":"$(item)","color":"aqua"},{"text":" have=","color":"gray"},{"score":{"name":"$cui_have","objective":"macroengine.tmp"},"color":"yellow"},{"text":" need=","color":"gray"},{"text":"$(count)","color":"yellow"}]

packs/macroEngine-Datapack-1.21.2/data/macroengine/function/debug/example_recipes.mcfunction

@@ -0,0 +1 @@
+data modify storage macroengine:engine _crafting_ui.recipes.example set value {ingredients:[{item:"minecraft:iron_ingot",count:2},{item:"minecraft:stick",count:1}],result:{item:"minecraft:shears",count:1}}

packs/macroEngine-Datapack-1.21.2/data/macroengine/function/experimental/crafting_ui/craft.mcfunction

@@ -1,10 +1,4 @@
 # macroengine:experimental/crafting_ui/craft [MACRO]
-# Attempts to craft the given recipe id. Looks up the recipe definition
-# from experimental/crafting_ui/recipes.mcfunction (storage-based table),
-# checks the caller has every required ingredient in sufficient count,
-# clears them, and gives the result. All-or-nothing — nothing is
-# consumed if any ingredient is missing.
-#
 # Usage:  function macroengine:experimental/crafting_ui/craft {recipe:"example"}
 # Caller: any player
 
@@ -17,9 +11,12 @@ $execute unless data storage macroengine:engine _crafting_ui.recipes.$(recipe) r
 
 $data modify storage macroengine:engine _crafting_ui.active set from storage macroengine:engine _crafting_ui.recipes.$(recipe)
 
-# Check every ingredient is present in sufficient count (all-or-nothing).
+# Check every ingredient (all-or-nothing). Uses a working copy so the
+# real ingredients list is still available for consume below.
 data modify storage macroengine:engine _crafting_ui.ok set value 1b
+data remove storage macroengine:engine _cui_check
 function macroengine:core/internal/experimental/crafting_ui/check_ingredients with storage macroengine:engine _crafting_ui.active
+data remove storage macroengine:engine _cui_check
 
 execute unless data storage macroengine:engine _crafting_ui{ok:1b} run tellraw @s ["",{"text":"[MACROENGINE] ","color":"#00AAAA","bold":true},{"text":"missing ingredients.","color":"red"}]
 execute unless data storage macroengine:engine _crafting_ui{ok:1b} run data remove storage macroengine:engine _crafting_ui

packs/macroEngine-Datapack-1.21.2/data/macroengine/function/experimental/crafting_ui/recipes.mcfunction

@@ -11,4 +11,4 @@
 execute unless data storage macroengine:engine _crafting_ui run data modify storage macroengine:engine _crafting_ui set value {}
 data modify storage macroengine:engine _crafting_ui.recipes set value {}
 
-data modify storage macroengine:engine _crafting_ui.recipes.example set value {ingredients:[{item:"minecraft:iron_ingot",count:2},{item:"minecraft:stick",count:1}],result:{item:"minecraft:shears",count:1}}
+function #macroengine:cui/load_recipes

packs/macroEngine-Datapack-1.21.2/data/macroengine/function/experimental/crafting_ui/show.mcfunction

@@ -1,15 +1,5 @@
 # macroengine:experimental/crafting_ui/show
-# Prints a clickable "custom crafting" shortcut menu — each button gives
-# the result item if the caller has the listed ingredients, consuming
-# them. This is NOT a real crafting-table GUI (data packs can't add
-# custom recipe UIs to the survival crafting grid) — it's a chat-menu
-# shortcut for datapack-defined recipes that don't fit the vanilla
-# 3x3 grid. Gated behind flags.experimental.crafting_ui.
-#
-# BACKPORT NOTE (1.21.2): same constraint as setup/open_screen.mcfunction —
-# no `dialog show` / custom container screen available without a resource
-# pack GUI + click-handling entity, out of scope for a first experimental
-# pass. Chat-menu clickables instead.
+# Prints a clickable "custom crafting" shortcut menu.
 #
 # Usage:  function macroengine:experimental/crafting_ui/show
 # Caller: any player
@@ -19,5 +9,5 @@ execute unless data storage macroengine:engine flags.experimental{crafting_ui:1b
 
 tellraw @s ["",{"text":"═══════ ","color":"dark_gray"},{"text":"macroEngine — Custom Recipes","color":"aqua","bold":true},{"text":" ═══════","color":"dark_gray"}]
 tellraw @s ["",{"text":"Recipes not shown in the vanilla grid. Click to attempt a craft (consumes ingredients if you have them).","color":"gray","italic":true}]
-tellraw @s ["",{"text":"[Craft] ","color":"green","bold":true,"clickEvent":{"action":"run_command","value":"/function macroengine:experimental/crafting_ui/craft {recipe:\"example\"}"},"hoverEvent":{"action":"show_text","value":"See experimental/crafting_ui/recipes.mcfunction to define real recipes"}},{"text":"example — placeholder recipe","color":"white"}]
+tellraw @s ["",{"text":"[Craft] ","color":"green","bold":true,"clickEvent":{"action":"run_command","value":"/function macroengine:experimental/crafting_ui/craft {recipe:\"example\"}"},"hoverEvent":{"action":"show_text","value":"Needs: 2x iron_ingot + 1x stick → 1x shears"}},{"text":"example — 2 iron_ingot + 1 stick → shears","color":"white"}]
 tellraw @s ["",{"text":"═════════════════════════════════════","color":"dark_gray"}]

packs/macroEngine-Datapack-1.21.2/data/macroengine/tags/function/cui/load_recipes.json

@@ -0,0 +1,5 @@
+{
+  "values": [
+    "macroengine:debug/example_recipes"
+  ]
+}