- Add sdl2.create_overlay_texture() and draw_overlay_texture(alpha) for
transparent full-map overlays built from sub-tile surface blits.
- Add Graphics.regenerate_tunnel_cover() which builds an overlay of
4 random grass sub-tiles (20x20) for every internal tunnel cell,
defined as a tunnel cell surrounded by occupied cells (wall or
tunnel) on all four sides. Cells with at least one open side are
handled by cave_foreground and skipped here.
- Draw the tunnel cover in the game loop after top-layer units/effects
but before cave_foreground and points, at 95% opacity (alpha=242)
so the unit and effect passing underneath is just barely visible.
Previously Rat.draw() hid any rat whose center fell inside a tunnel.
The clipping helper only handled single-entrance cells and returned None
for internal passages/crossroads, causing rats to vanish entirely.
Now internal tunnel cells (those with 0 or 2+ open sides) draw the rat
normally so it remains visible while walking through the tunnel.
Single-entrance cells keep the partial clip effect.
Also fix the visible-ratio math for DOWN/RIGHT clipping: the old
formulas subtracted cell_size from a local coordinate, producing
zero or negative visibility.
Previously regenerate_background() used occupied() (wall or tunnel) to
choose wall border/corner tiles. This caused walls adjacent to tunnels
to render with inner corners as if the tunnel were solid ground.
Now wall border logic uses is_wall() so only actual wall neighbors
influence the shape. Tunnel neighbor checks for flower-suppression are
kept explicit.
- Introduced a new JSON file containing non-regression test states with detailed unit information, including positions, ages, and movement directions across multiple frames.
- Added a shell script for Bluetooth diagnostics that checks system information, Bluetooth binaries, running processes, D-Bus status, Bluetooth controller details, and audio stack status, providing a comprehensive overview for troubleshooting.
- Refactor keybindings for gas spawning across multiple configurations
- Implement new loading screen updates during game initialization
- Add tests to ensure all weapon actions are exposed in keybinding profiles
- Introduce new assets for explosion effects
- Added `image_clean.png` to the output directory for the clean image representation.
- Added `image_clean_preview.png` for the preview of the clean image.
- Introduced `image_svg_clean.png` for the SVG clean image representation.
Major improvements:
- NumPy-based collision system supporting 200+ units (~3ms/frame)
- Spatial hashing with vectorized distance calculations
- 4-pass game loop ensuring correct collision timing
- Blood overlay system with pre-generated stain pool
- Cached render positions and viewport bounds
- Spawn protection preventing rats spawning on weapons
Bug fixes:
- Fixed bombs not killing rats (collision system timing)
- Fixed gas not affecting rats (collision system timing)
- Fixed rats spawning on weapons (added has_weapon_at check)
- Fixed AttributeError with Gas collisions (added isinstance check)
- Fixed blood stain transparency (RGBA + SDL_BLENDMODE_BLEND)
- Reduced point lifetime from 200 to 90 frames (~1.5s)
- Blood layer now clears on game restart
Technical changes:
- Added engine/collision_system.py with CollisionLayer enum
- Updated all units to use collision layers
- Pre-allocate NumPy arrays with capacity management
- Hybrid collision approach (<10 simple, ≥10 vectorized)
- Python 3.13 compatibility
Matteo Benedetto