docs: add session summary and 48h diff for handoff

2026-03-19 19:16:27 +00:00
parent 9535d65bd7
commit d29a3e793f
2 changed files with 199 additions and 0 deletions
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+# Last 48h Git Diff
+
+## Commit: 9535d65 (HEAD)
+### Message: feat: data-oriented chunks optimization with tile registry
+
+Files changed (14 files, +423 -84):
+
+```
+tiles.toml                                        | +186 (NEW)
+src/config.rs                                     | +50
+src/entities/shared_systems/pathfinding.rs         | +45 -4
+src/entities/shared_components/ambulatory.rs      | +10 -10
+src/entities/livestock/pig.rs                     | +10 -2
+src/entities/livestock/rabbit.rs                  | +8
+src/entities/sentient/dorf.rs                     | +8
+src/game.rs                                      | +12
+src/main.rs                                      | +16 -16
+src/world/generation/terrain.rs                   | +123 -3
+src/world/mod.rs                                 | +12
+src/world/tiles/chunk_data.rs                    | +21
+src/world/tiles/prefabs.rs                       | +85 -19
+src/world/tiles/tilemap.rs                       | +14
+```
+
+### Key Changes:
+
+#### 1. External Tile Registry (tiles.toml)
+- New `tiles.toml` for hot-reloadable tile definitions
+- Floor tiles: air, grass, dirt, rock, bedrock with weight/standability
+- Fixture tiles: walls, log, leaves
+- IDs, weights, can_stand_in, can_stand_on all configurable
+
+#### 2. Config.rs additions
+- `TileRegistry` struct with `OnceLock` global singleton
+- `FloorTileDef` and `FixtureTileDef` structs
+- Loads from `tiles.toml` at first access
+- `global()` method for async-safe access
+
+#### 3. Pathfinding.rs changes
+- `calculate_movement_cost(move_dir, tile_weight)` - now takes weight param
+- `get_tile_weight(tilemap, pos)` - retrieves weight from tile
+- Movement speed modifier: `threshold = walk_speed * (tile_weight / 50)`
+- `SpawnDelay` resource for delayed spawning
+
+#### 4. Chunk data improvements
+- `ChunkData::is_standable()` bit-packed standability checks
+- `get_astar_weight()` method for pathfinding cost
+
+#### 5. world_to_chunk fix
+- Changed from `CHUNK_SIZE` (8) to `CHUNK_SIZE_TILE` (128)
+
+#### 6. Entity spawning fixes
+- `Local<bool>` state guards prevent infinite spawning
+- Grid-aligned spawn coordinates
+- Delayed spawning with `SpawnDelay` resource
+
+---
+
+## Commit: 50788af
+### Message: feat(optimization): implement data-oriented chunk architecture
+
+Previous optimization phases:
+- ChunkData with bit-packed standability
+- Dirty chunk tracking for O(d) connectivity
+- Async terrain generation