backups/Fantasy-Map-Generator
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barrulus 2025-09-04 10:13:01 +01:00
parent 20dfb7cfcb
commit 21df872ca2
7 changed files with 466 additions and 210 deletions
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43
main.js
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@ -1219,25 +1219,42 @@ function updateSuitabilityFromHubs() {
const hubs = burgs.filter(b => b.capital || b.port).map(b => b.cell);
if (!hubs.length) return;
const cellCoords = cells.p;
// Multi-source Dijkstra to compute min distance (in pixels) from any hub to every cell
const n = cells.i.length;
const distArr = new Float32Array(n);
for (let i = 0; i < n; i++) distArr[i] = Infinity;
const q = new FlatQueue();
for (const hub of hubs) {
distArr[hub] = 0;
q.push(hub, 0);
}
while (q.length) {
const d0 = q.peekValue();
const u = q.pop();
if (d0 !== distArr[u]) continue;
const [ux, uy] = cells.p[u];
const neigh = cells.c[u];
for (let k = 0; k < neigh.length; k++) {
const v = neigh[k];
// skip water for suitability
if (cells.h[v] < 20) continue;
const [vx, vy] = cells.p[v];
const w = Math.hypot(vx - ux, vy - uy);
const nd = d0 + w;
if (nd < distArr[v]) {
distArr[v] = nd;
q.push(v, nd);
}
}
}
const maxSuitability = 100;
const decayRate = 0.02;
const areaMean = d3.mean(cells.area);
function minDistToHub(cellId) {
const [x, y] = cellCoords[cellId];
let minDist = Infinity;
for (const hubCell of hubs) {
const [hx, hy] = cellCoords[hubCell];
const dist = Math.hypot(x - hx, y - hy);
if (dist < minDist) minDist = dist;
}
return minDist;
}
for (const i of cells.i) {
if (cells.h[i] < 20) continue;
const dist = minDistToHub(i);
const dist = distArr[i];
let s = maxSuitability * Math.exp(-decayRate * dist);
s *= +biomesData.habitability[cells.biome[i]] / 100;
cells.s[i] = s;