beezm/islaApocalypse
1
0
Fork 0
Code Issues Pull requests Projects Releases Packages Wiki Activity Actions
islaApocalypse/Tools
History
beezm 2de9502e4f feat: mixed river plan with provisional routes (terrain-water task 21b, C0b part 1 revised) 
Still PURE ANALYSIS — zero terrain change, zero water; the source blueprint is
never written (md5-verified). Extends task 21 per the developer's b+c decision:
promote ~5-6 rivers, the natural ocean trunks PLUS the top endorheic giants.

Giants (top GiantCount terminal basins by per-basin total inflow) get their main
stem anchored on the STRONGEST FEEDER into the basin, not the basin's deepest
cell — on a flat basin floor the deepest cell sees only local trickles (the
task-21 lesson applied to stems). Classification is by what the terminal BASIN
holds, not the stem's single pooling cell (a stem can pool on dry ground a few
hundred px short of its lagoon and still be a lagoon river): basin holds a
classify lake -> LAKE-ENDER; dry pan -> ROUTED; the giant pooling nearest the
southernmost town is the SOUTHERN CANDIDATE and always ROUTED (shown, not
forced). Routed giants carry a PROVISIONAL route: steepest descent on the FULL
(no-terminal) epsilon fill, so the basin overtops at its spill and the walk
follows the terrain's own drainage to the ocean — the technique part 2 carves
with, here only drawn and flagged provisionalRoute_NOT_WATER in the JSON.

Seed 1280587109 result (defaults, 6 rivers): 3 ocean trunks (unchanged from
task 21) + GIANT 1 [ROUTED - SOUTHERN CANDIDATE] 2.27M px pooling in the SE
lagoon, 932-px route via spill (6598,5866) to the ocean — the island's biggest
river serving the south; GIANT 2 [LAKE-ENDER] 1.82M px ending at the E lagoon;
GIANT 3 [ROUTED] 1.76M px SW dry-pan system, 1716-px route to the SW coast.
All provisional routes reach the ocean. Analysis 22 s.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>
2026-08-11 18:33:41 -04:00
..
Scenes feat: drainage-network promotion analysis — the river PLAN (terrain-water task 21, C0b part 1) 2026-08-11 18:06:21 -04:00
Scripts feat: mixed river plan with provisional routes (terrain-water task 21b, C0b part 1 revised) 2026-08-11 18:33:41 -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.