game/prompt/04_inventory_slots_request.md

Role

You are a Senior Flutter Developer working on "Colosseum's Choice". You need to upgrade the Inventory System to a Grid-based Slot System.

Goal

Separate "Equipped Items" from "Inventory Items" and create a fixed 16-slot inventory interface.

Key Requirements

1. Character Model Update:
   • Maintain equipment list (Items currently providing stats).
   • Add inventory list (Items in the bag, providing NO stats).
   • Limit inventory size to 16 slots.
   • Add methods: equipItem(item), unequipItem(item).
2. Battle Logic Update:
   • Victory Reward: When an item is selected, add it to inventory (not equipment).
   • If inventory is full (16 items), show a "Inventory Full" message (Snack bar or Log) and discard the item (Simple logic for now).
3. UI Update (Inventory Screen):
   • Section 1: Equipment: Show currently equipped items (List or Row). Tap to Unequip.
   • Section 2: Inventory (Bag): Use GridView with fixed 16 slots (4x4 grid).
     • If a slot has an item: Show Icon & Name. Tap to Equip.
     • If a slot is empty: Show an empty box container.

Required Files

Please generate the updated code for the following files.

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1. lib/models/character.dart (Update)

Changes:

• Add List<Item> inventory = [];.
• Add int maxInventorySize = 16;.
• Method addToInventory(Item item): Adds to inventory if length < 16. Returns success boolean.
• Method equip(Item item): Moves item from inventory to equipment.
• Method unequip(Item item): Moves item from equipment to inventory (check space first).

2. lib/providers/battle_provider.dart (Update)

Changes:

• selectReward(Item item): Now calls player.addToInventory(item).
  • If false (full), add a log "Inventory is full! Item discarded.".
• Add equipItem(Item item): Calls player logic and notifies listeners.
• Add unequipItem(Item item): Calls player logic and notifies listeners.

3. lib/screens/inventory_screen.dart (Update)

Layout:

• Top (Stats): Keep existing stat display.
• Middle (Equipped): "Currently Equipped" Label -> ListView (horizontal or vertical, compact). OnTap -> provider.unequipItem.
• Bottom (Inventory): "Bag (X/16)" Label -> GridView.builder with itemCount: 16.
  • Loop 0 to 15.
  • If index < player.inventory.length, render the Item Tile (Tap to equipItem).
  • Else, render an Empty Slot (Grey container with border).

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Output Format

Please provide the complete code for the 3 modified files.