Items, hero stat modifiers, and shop systems

[corepunch]

Overview

Implement item abilities, hero stat modifiers, and shop/neutral building systems.

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Abilities covered

Item use (partial)

• Item Heal (AIhe) — needs charge/consume rules
• Item Mana Regain (AIma) — needs charge/consume rules
• Permanent Life Gain (AImi) — needs charge/consume rules
• Figurine Summon (AIfs) — item summon behavior

Item stat modifiers

• Attack Bonus (AIat) — weapon damage modifier
• Defense Bonus (AIde) — armor modifier
• Life Bonus (AIml) — max health modifier
• Mana Bonus (AImm) — max mana modifier
• Stat Bonus (AIab) — hero stat (STR/AGI/INT) modifier

Permanent hero gains

• Permanent Intelligence Gain (AIim)
• Permanent Strength Gain (AIsm)
• Permanent Agility Gain (AIam)
• Permanent Multi-stat Gain (AIxm)
• Experience Gain (AIem) — hero XP flow
• Level Gain (AIlm) — hero level-up flow

Shops & neutral

• Shop Purchase Item (Apit) — shop inventory, purchase flow
• Neutral Building (Aneu) — neutral interaction, command card
• Shop Sharing (Aall) — depends on shop/neutral systems

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Files to modify

Existing:

• games/warcraft-3/game/skills/s_item.c — extend with charge/consume, stat modifiers
• games/warcraft-3/game/skills/s_ability_stubs.c — remove stubs

New:

• games/warcraft-3/game/skills/s_item_stats.c — stat modifier system
• games/warcraft-3/game/skills/s_shop.c — shop inventory, purchase, sharing
• games/warcraft-3/game/skills/s_neutral.c — neutral building interaction

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Implementation checklist

• Item charge/consume rules (AIhe, AIma, AImi)
• Figurine summon behavior (AIfs)
• Stat modifier system (AIat, AIde, AIml, AImm, AIab)
• Permanent stat gains (AIim, AIsm, AIam, AIxm)
• Hero XP/level flow (AIem, AIlm)
• Shop inventory and purchase (Apit)
• Neutral building interaction (Aneu)
• Shop sharing (Aall)