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beezm af1a6d912b docs: TDTL v2 body, shelf-edge variation, erosion deferred (terrain-water task 10) 
BLUEPRINT_FORMAT.md: TDTL rewritten for the v2 body (30 B) with the
version-skip rule spelled out -- this is the one section whose body is
VERSIONED rather than extended, because v1's layout was retired rather
than grown, and a reader that guesses would mint plausible nonsense.
Records edgeAmpM as APPLIED (post-clamp), so the file always describes
the terrain rather than the request. Config-knobs section updated:
ShelfEdgeVariation is metres of INPUT height -- a boundary displacement,
not an elevation.

Tools/Scripts/README.md: the two detail passes and why neither can breach
the red ceiling or the 420 m cap (K2/K6 do not move). Adds an explicit
"no rivers, no erosion, no flow routing anywhere in this pipeline" note
with the reverted D8 pass and its lesson on the record, so the next
reader does not re-derive it.

Co-Authored-By: Claude Opus 5 (1M context) <noreply@anthropic.com>
2026-08-08 20:55:39 -04:00
..
Scenes docs: BLUEPRINT_FORMAT.md + README updates for the v2 container (terrain-water task 02) 2026-08-06 07:31:03 -04:00
Scripts docs: TDTL v2 body, shelf-edge variation, erosion deferred (terrain-water task 10) 2026-08-08 20:55:39 -04:00
README.md docs: water sections (WBID/WBTB/WSRF), no-BSIN rationale, SkipRoads + water stage in READMEs (terrain-water task 03) 2026-08-07 01:40:48 -04:00

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's MapProfile: 4K/6K/8K/10K → 4096 / 6144 / 8192 / 10240. Shipped default is 8K. 1 pixel = 1 in-game metre = 1 voxel footprint. (The MapSize field 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).
  • Water bodies: the classified water promoted into explicit blueprint data (ocean + labeled lakes with transitional per-body levels — WBID/WBTB/WSRF sections), plus priority-flood basin diagnostics. The SkipRoads config toggle turns a full ~26-min generation into a ~80 s road-less iteration cycle.
  • Logistics: AStarGrid2D pathfinding 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 — v2 tagged container (~336 MB at 8K; contract in Core/Scripts/BLUEPRINT_FORMAT.md)
MapData_Seed_<seed>_v1.dat The same content in the legacy v1 format (~512 MB), dual-written as a safety net until a future removal task
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

  1. No client dependencies. Nothing here may reference UI, player controllers or shaders in /Client.
  2. Data out, nothing in. Tools emit .dat/.png/.json; they never write to a live server save.
  3. No magic numbers. Distances and radii scale off MapSize or the derived scaleFactor, so the generator behaves the same at every profile.