v0.5.0 - Items & Entities Update 🎒

Major update introducing a comprehensive item system with 14 new items, new enemy behaviors, sanity mechanics, and extensive combat improvements.

✨ New Features

Item System

• 14 new items across BODY, MIND, and NULL pools
• Items provide passive bonuses, attack modifiers, and active effects
• Progressive revelation system - learn more about items as you level up
• Item spawn system with rarity-based probabilities and corruption scaling

New Entities

• Smiler - Psychological horror enemy that stalks from a distance, immune to all damage except sound attacks
• Bacteria Spreader - Support enemy that heals nearby bacteria and deals AOE damage

Sanity System

• Sanity damage occurs every 13 turns based on nearby enemy threat levels
• Killing enemies restores sanity based on their threat weight
• Sanity regen items (Almond Water) provide passive recovery

Combat Improvements

• Attack tag system (physical, sound, psychic, anomaly, melee, ranged)
• Cross-pool item synergies via tag-based damage multipliers
• Damage interceptor system for reactive shields
• Multi-attack support (Brass Knuckles)
• Attack pattern transformations (Siren’s Cords, Shovel)

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📦 New Items Table

BODY POOL ITEMS

• Wheatie-O’s (Common): +2 BODY per level
• Baseball Bat (Common): 1.25x damage multiplier per level
• Shovel (Uncommon): SWEEP attack pattern, +5% item spawn (+1%/level)
• Brass Knuckles (Rare): +1 extra attack per level, +5%/level STR scaling
• Trail Mix (Rare): +0.5% HP regen per turn per level
• Siren’s Cords (Epic): Transforms BODY attack to sound AOE, +0.5 range/level

MIND POOL ITEMS

• Drinking Bird (Common): Global cooldown reduction, ~7% at L1, max 50%
• Binoculars (Uncommon): +5 PERCEPTION per level
• Coach’s Whistle (Uncommon): 1.5x damage multiplier to “sound” attacks per level
• Almond Water (Rare): +0.5% Sanity regen per turn per level

NULL POOL ITEMS

• Roman Coin (Common): +5% mana regen per level
• DEBUG_ITEM (Uncommon): Random HP/SAN damage and heal, +5 max mana/level
• Lucky Rabbit’s Foot (Uncommon): 10% (+5%/level) chance to reset a random cooldown, costs 2 mana
• Antigonous Notebook (Legendary): +4 NULL/level, blocks damage for 5 mana/level (15 turn CD), +corruption on equip

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🎯 Item Synergies

Sound Build (BODY + MIND)

• Siren’s Cords transforms BODY punch into sound AOE
• Coach’s Whistle multiplies all sound damage by 1.5x per level
• Brass Knuckles adds extra attacks - each one benefits from sound multiplier!

Mana Build (NULL)

• Roman Coin provides mana regeneration
• Antigonous Notebook gives massive NULL boost + damage shield
• Lucky Rabbit’s Foot can reset cooldowns for 2 mana

Sustain Build (BODY + MIND)

• Trail Mix provides HP regen
• Almond Water provides Sanity regen
• Wheatie-O’s boosts max HP via BODY stat

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🐛 Bug Fixes & Improvements

• Fixed private field access in Lucky Rabbit’s Foot (now uses public accessors)
• Added instance validity checks for damage interceptors
• Added array bounds checks in item spawner
• Centralized THREAT_WEIGHTS constant in EntityRegistry
• Centralized attack tags in AttackTypes.Tags class
• Added callable validation for damage interceptor callbacks
• Improved corruption scaling documentation

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🏗️ Architecture

• BehaviorRegistry - Strategy pattern for entity AI behaviors
• AttackTypes.Tags - Centralized tag constants for attack classification
• Damage Interceptor System - Reactive damage prevention callbacks
• Item Modifier Aggregation - Order-independent modifier stacking

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📋 Full Changelog

See PR #24 for complete details: https://github.com/aebrer/backrooms_power_crawl/pull/24

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Download:

• bpc_v0.5.0_linux.tar.gz - Linux build
• bpc_v0.5.0_windows.tar.gz - Windows build