initial commit

BUILD_NOTES.md

@@ -0,0 +1,116 @@
+# Cat Haven - Implementation Status
+
+## Build Notes
+
+### Phase 1: MVP Setup ✅
+- [x] Project scaffolding with module structure
+- [x] LOVR 2023 (v1.4) compatibility
+- [x] Basic rendering pipeline
+- [x] Game state management
+
+### Phase 2: Core Systems ✅
+- [x] **Core Module** (`src/core.lua`)
+  - Configuration system
+  - Personality definitions (5 types)
+  - Furniture definitions (5 types)
+  - Save/load system with JSON
+  - Game loop and state updates
+
+- [x] **JSON Module** (`src/json.lua`)
+  - Custom encoder/decoder
+  - Handles all Lua types
+  - Non-string key support
+  - Error handling for malformed JSON
+
+- [x] **Voxel Module** (`src/voxel/init.lua`)
+  - Procedural texture generation
+  - Cube mesh rendering
+  - AABB collision detection
+  - Raycasting for interaction
+
+- [x] **Cat Module** (`src/cat/init.lua`)
+  - Cat class with state machine
+  - AI behavior system
+  - Personality compatibility logic
+  - Serialization for save/load
+
+- [x] **House Module** (`src/house/init.lua`)
+  - Grid-based placement system
+  - Collision detection
+  - Furniture management
+  - Upgrade system
+
+- [x] **UI Module** (`src/ui/init.lua`)
+  - HUD with happiness meter
+  - Inventory panel
+  - Cat log display
+  - Placement preview
+
+- [x] **Audio Module** (`src/audio/init.lua`)
+  - Procedural purr sound
+  - Procedural meow sound
+  - Ambient room noise
+  - Click sound effects
+
+### Phase 3: Polish ✅
+- [x] Error handling throughout
+- [x] Nil checks on all module access
+- [x] Edge case handling (empty lists, zero distance)
+- [x] Automatic cat departure logic
+- [x] Camera-agnostic raycasting
+- [x] Responsive UI scaling
+
+### Phase 4: Neverending Loop ✅
+- [x] Infinite cat spawning
+- [x] Continuous happiness calculation
+- [x] Auto-departure for unhappy cats
+- [x] Persistent save system
+
+## Known Limitations
+
+1. **Audio**: Procedural sounds are basic waveforms, not realistic animal sounds
+2. **Rendering**: Simple box models, no complex geometry
+3. **VR**: Designed for VR but tested in 2D mode only
+4. **Performance**: O(n²) cat interaction complexity (acceptable for < 8 cats)
+
+## Future Enhancements
+
+- [ ] Multiple rooms
+- [ ] Cat breeding system
+- [ ] Furniture crafting
+- [ ] Achievements system
+- [ ] Sound mixing controls
+- [ ] Cat coloring customization
+
+## Technical Decisions
+
+1. **Module Loading**: Lazy loading to break circular dependencies
+2. **JSON Format**: Custom implementation for LOVR compatibility
+3. **Audio**: Procedural generation to avoid external assets
+4. **Textures**: Runtime generation to avoid external assets
+5. **Collision**: AABB-based for simplicity and performance
+
+## Testing Notes
+
+To test in LOVR:
+1. Run `lovr ./` from project root
+2. Press RThumb + S to save
+3. Press RThumb + L to load
+4. Press ESC to pause
+5. Click inventory items to select furniture
+6. Watch cats interact with furniture
+
+## Files Summary
+
+| File | Lines | Purpose |
+|------|-------|---------|
+| main.lua | 45 | LOVR callbacks |
+| src/core.lua | 453 | Game state, config, save/load |
+| src/json.lua | 250 | JSON encoder/decoder |
+| src/voxel/init.lua | 333 | Rendering, textures, raycasting |
+| src/cat/init.lua | 274 | Cat AI, behavior, state machine |
+| src/house/init.lua | 215 | Grid, placement, collision |
+| src/ui/init.lua | 305 | HUD, inventory, cat log |
+| src/audio/init.lua | 200 | Procedural audio generation |
+
+**Total: 2,075 lines of Lua code**