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Use when building inventory systems — Resource-based items, slot management, stacking, and UI binding
Passed 18 of 23 test cases with the skill, and 13 of 23 without it.
and 2 more in the full report
5 fixed13 passed either way5 still failing0 broke
Tokens, turns and time describe resource use, not a dollar price.
One of 5 test cases the skill fixed. Same model, same prompt, with and without the skill.
I am designing unique weapons and key items in Godot 4.3 GDScript that shouldn't stack in the inventory. How should I prevent these items from stacking inside the inventory manager's add_item logic?
| Checked | Without skill | With skill |
|---|---|---|
| Prevents item stacking by setting max_stack_size to 1 on item data resources instead of adding conditional branch logic in add_item. | Missed | Passed |
The instructions your model reads when the skill loads.
All examples target Godot 4.3+ with no deprecated APIs. This skill carries the decisions; the implementations live in references/ (GDScript first, then C#) — load the one you need.
Related skills: resource-pattern for custom Resource data containers, save-load for inventory serialization, event-bus for inventory change notifications, hud-system for inventory UI display, popochiu for adventure-game inventory.
┌─────────────────────────────────────────────────────────┐
│ UI Layer │
│ InventoryUI (Control) │
│ └─ GridContainer │
│ └─ SlotUI × N (Button) │
│ └─ TextureRect (icon) + Label (qty) │
│ │
│ Connects to: inventory_changed signal │
│ Drag-and-drop via _get_drag_data / _drop_data │
└───────────────────────┬─────────────────────────────────┘
│ reads / mutates
┌───────────────────────▼─────────────────────────────────┐
│ Inventory (Node) │
│ slots: Array[InventorySlot] │
│ add_item(item, qty) → leftover: int │
│ remove_item(item, qty) │
│ has_item(item, qty) → bool │
│ get_item_count(item) → int │
│ │
│ signals: inventory_changed │
│ item_added(item, quantity) │
│ item_removed(item, quantity) │
└───────────────────────┬─────────────────────────────────┘
│ references
┌───────────────────────▼─────────────────────────────────┐
│ Data Layer (Resources) │
│ ItemData (Resource) │
│ id, name, description, icon, max_stack_size, │
│ item_type enum │
test cases passed, vs 13 / 23 without
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