History

beezm c305fd6565 feat: blueprint v2 envelope — writer, dual-write, round-trip harness (terrain-water task 02) v2 tagged-section container (D-030): raw ISLA magic + u32 version gate, [u32 tag][u64 length][payload] sections — params (resolved generation inputs incl. impact centre), heights f32, biomes u8, towns with the highway-node flag, four road tiers identified by tag not position. - BlueprintFormat.cs: the single tag/constant registry. - BlueprintWriter.WriteV2: blueprint-typed, callable outside a generation run; generator and harness are both just callers. - ExportMapData dual-writes: v2 under the primary seed name, legacy v1 beside it as _v1.dat (safety net; removal is a future task). - MapDataParser: LoadMapDataFromPath entry point; v1 parse body extracted intact as LoadV1 (v2 reader lands in the next commit). - RoundTripHarness scene: load v1 -> write v2 -> load v2 -> semantic equality, headless, seconds per cycle. Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>		2026-08-06 07:24:08 -04:00
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Scenes	feat: blueprint v2 envelope — writer, dual-write, round-trip harness (terrain-water task 02)	2026-08-06 07:24:08 -04:00
Scripts	feat: blueprint v2 envelope — writer, dual-write, round-trip harness (terrain-water task 02)	2026-08-06 07:24:08 -04:00
README.md	docs: bring all READMEs current with actual code (post-sweep-10 truth pass)	2026-08-05 05:23:58 -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).
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 (~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 MapSize or the derived scaleFactor, so the generator behaves the same at every profile.

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