TileLayer (closes#200):
- apply_threshold(source, range, tile): Set tile index where heightmap value is in range
- apply_ranges(source, ranges): Apply multiple tile assignments in one pass
ColorLayer (closes#201):
- apply_threshold(source, range, color): Set fixed color where value is in range
- apply_gradient(source, range, color_low, color_high): Interpolate colors based on value
- apply_ranges(source, ranges): Apply multiple color assignments (fixed or gradient)
All methods return self for chaining. HeightMap size must match layer dimensions.
Later ranges override earlier ones if overlapping. Cells not matching any range are unchanged.
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
Enhanced tp_doc strings for both layer types to include:
- What happens when grid_size=None (inherits from parent Grid)
- That layers are created via Grid.add_layer() rather than directly
- FOV-related methods for ColorLayer
- Tile index -1 meaning no tile/transparent for TileLayer
- fill_rect method documentation
- Comprehensive usage examples
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude Opus 4.5 <noreply@anthropic.com>
ColorLayer enhancements:
- fill_rect(x, y, w, h, color): Fill rectangular region
- draw_fov(source, radius, fov, visible, discovered, unknown): One-time FOV draw
- apply_perspective(entity, visible, discovered, unknown): Bind layer to entity
- update_perspective(): Refresh layer from bound entity's gridstate
- clear_perspective(): Remove entity binding
New demo: tests/demo/perspective_patrol_demo.py
- Entity patrols around 10x10 central obstacle
- FOV layer shows visible/discovered/unknown states
- [R] to reset vision, [Space] to pause, [Q] to quit
- Demonstrates fog of war memory system
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
- Add `layers` dict parameter to Grid constructor for explicit layer definitions
- `layers={"ground": "color", "terrain": "tile"}` creates named layers
- `layers={}` creates empty grid (entities + pathfinding only)
- Default creates single TileLayer named "tilesprite" for backward compat
- Implement dynamic GridPoint property access via layer names
- `grid.at(x,y).layer_name = value` routes to corresponding layer
- Protected names (walkable, transparent, etc.) still use GridPoint
- Remove base layer rendering from UIGrid::render()
- Layers are now the sole source of grid rendering
- Old chunk_manager remains for GridPoint data access
- FOV overlay unchanged
- Update test to use explicit `layers={}` parameter
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
Implement per-layer dirty tracking and RenderTexture caching for
ColorLayer and TileLayer. Each layer now maintains its own cached
texture and only re-renders when content changes.
Key changes:
- Add dirty flag, cached_texture, and cached_sprite to GridLayer base
- Implement renderToTexture() for both ColorLayer and TileLayer
- Mark layers dirty on: set(), fill(), resize(), texture change
- Viewport changes (center/zoom) just blit cached texture portion
- Fallback to direct rendering if texture creation fails
- Add regression test with performance benchmarks
Expected performance improvement: Static layers render once, then
viewport panning/zooming only requires texture blitting instead of
re-rendering all cells.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
Implements ColorLayer and TileLayer classes with z_index ordering:
- ColorLayer: stores RGBA color per cell for overlays, fog of war, etc.
- TileLayer: stores sprite index per cell with optional texture
- z_index < 0: renders below entities
- z_index >= 0: renders above entities
Python API:
- grid.add_layer(type, z_index, texture) - create layer
- grid.remove_layer(layer) - remove layer
- grid.layers - list of layers sorted by z_index
- grid.layer(z_index) - get layer by z_index
- layer.at(x,y) / layer.set(x,y,value) - cell access
- layer.fill(value) - fill entire layer
Layers are allocated separately from UIGridPoint, reducing memory
for grids that don't need all features. Base grid retains walkable/
transparent arrays for TCOD pathfinding.
🤖 Generated with [Claude Code](https://claude.com/claude-code)
Co-Authored-By: Claude <noreply@anthropic.com>
