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1f7613439a
A* was searching almost the whole island for every road. Godot's stock estimate-to-goal is plain straight-line distance, which assumes every step costs 1 — but a step through mountains costs up to 401 and a step near an existing road cost 10,001. With the estimate that far below reality, A* cannot rule anything out, so it degenerates toward Dijkstra. Two changes, both aimed at that: 1. RoadPathGrid overrides the estimate to scale it by HEURISTIC_WEIGHT (3.0), i.e. weighted A*. Paths may be up to 3x costlier than the theoretical best in exchange for exploring far less. This does NOT push roads over mountains: a ridge costs hundreds of times more than going around, which a 3x bias nowhere near pays for. 2. ROAD_REPULSION_PENALTY replaces the hardcoded +10000 with 250. The old value made ground near a road effectively infinite, and it compounded — each road drawn made the next search slower. 250 still strongly discourages roads from running alongside each other. Terrain weights are untouched: the mountain curve (1 + elevation^3 * 400), beach and wasteland costs are exactly as before, so mountains remain expensive and roads still avoid them. Routing, tiers, smoothing and grid resolution are also unchanged. Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com> |
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| README.md | ||
/Tools
Offline developer utilities. Nothing here ships. These generate the source data that /Server
and /Client later consume, which keeps world-generation logic out of the shipped client.
The 2D world generator
Script: Tools/Scripts/MapGenerator.cs · Scenes: Tools/Scenes/MapPreview.tscn and
Scenes/MapCaptureTool.tscn
Builds the topographical and logistical foundation of the island before any 3D exists.
- Resolution is config-driven, from
ServerConfig.json'sMapProfile:4K/6K/8K/10K→ 4096 / 6144 / 8192 / 10240. Shipped default is 8K. 1 pixel = 1 in-game metre = 1 voxel footprint. (TheMapSizefield initialiser in the script says 4096, but it is overwritten from config before use.) - Topography: FastNoiseLite plus distance-falloff maths for a guaranteed mainland island, a mountain spine, dynamic temperature-driven sea level, and an impact crater pushed into the northern coast (carved at 80 % of its radius so a landbridge always survives).
- Logistics:
AStarGrid2Dpathfinding producing a looping continental highway, a branch to the mountain hub, and county roads daisy-chained outward with Prim's algorithm. Paths are decimated (Ramer–Douglas–Peucker) then smoothed (4 Chaikin passes). - Zoning: biome mapping and tiered town/POI placement by slope, temperature and proximity.
⚠️ A* is the known bottleneck
The grid is one node per pixel — 67 million nodes at 8K — and the weight-setup pass walks every
one of them. A full generation can stall long enough that runs get abandoned. await yields are
sprinkled through the road stage, but they cannot interrupt a single engine-side GetPointPath call,
so they only help between paths. Expect a regeneration to take minutes, or to need abandoning.
Outputs — written to user://, not into the project
| File | What it is |
|---|---|
MapData_Seed_<seed>.dat |
The binary blueprint the server reads (~512 MB at 8K) |
Map_Seed_<seed>.png |
Visual snapshot of the map, for reviewing and picking seeds |
On Linux: ~/.local/share/godot/app_userdata/islaApocolypse/.
Running it
Open Tools/Scenes/MapPreview.tscn and press F6. It is also the project's main scene, so
pressing F5 anywhere runs this — which is why F5 regenerates your world instead of starting the
game. Use Scenes/MapCaptureTool.tscn when you specifically want the full-resolution PNG.
Rules
- No client dependencies. Nothing here may reference UI, player controllers or shaders in
/Client. - Data out, nothing in. Tools emit
.dat/.png/.json; they never write to a live server save. - No magic numbers. Distances and radii scale off
MapSizeor the derivedscaleFactor, so the generator behaves the same at every profile.