983 lines
35 KiB
JavaScript
983 lines
35 KiB
JavaScript
import { generateEntityName } from "./names.js";
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import { INF, MAP_H, MAP_W, SIZE, MinHeap, clamp, hash2, indexOf, inside, nearMapEdge, pickEntities, rand, xyOf } from "./mapUtils.js";
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export function neighbors8(x, y) {
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const out = [];
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for (let dy = -1; dy <= 1; dy++) {
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for (let dx = -1; dx <= 1; dx++) {
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if (dx === 0 && dy === 0) continue;
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const nx = x + dx;
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const ny = y + dy;
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if (inside(nx, ny)) out.push([nx, ny, Math.hypot(dx, dy)]);
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}
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}
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return out;
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}
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export function neighbors4(x, y) {
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const out = [];
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for (const [dx, dy] of [[1, 0], [-1, 0], [0, 1], [0, -1]]) {
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const nx = x + dx;
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const ny = y + dy;
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if (inside(nx, ny)) out.push([nx, ny, 1]);
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}
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return out;
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}
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export function distanceToNearest(points, x, y, fallback = 999) {
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let best = fallback;
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for (const p of points) best = Math.min(best, Math.hypot(p.x - x, p.y - y));
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return best;
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}
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export function aStar(start, goal, costAt) {
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const startIndex = indexOf(start.x, start.y);
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const goalIndex = indexOf(goal.x, goal.y);
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if (startIndex === goalIndex) return [[start.x, start.y]];
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const score = new Float32Array(SIZE);
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const cameFrom = new Int32Array(SIZE);
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const closed = new Uint8Array(SIZE);
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score.fill(INF);
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cameFrom.fill(-1);
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const heap = new MinHeap();
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score[startIndex] = 0;
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heap.push({ i: startIndex, f: Math.hypot(start.x - goal.x, start.y - goal.y) });
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let guard = 0;
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while (heap.length > 0 && guard++ < SIZE * 3) {
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const current = heap.pop();
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if (!current || closed[current.i]) continue;
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closed[current.i] = 1;
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if (current.i === goalIndex) {
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const path = [];
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let p = goalIndex;
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while (p !== -1) {
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const [x, y] = xyOf(p);
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path.push([x, y]);
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if (p === startIndex) break;
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p = cameFrom[p];
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}
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return path.reverse();
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}
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const [cx, cy] = xyOf(current.i);
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for (const [nx, ny, stepDistance] of neighbors8(cx, cy)) {
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const nextIndex = indexOf(nx, ny);
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if (closed[nextIndex]) continue;
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const cost = costAt(nx, ny, cx, cy);
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if (cost >= INF) continue;
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const nextScore = score[current.i] + cost * stepDistance;
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if (nextScore < score[nextIndex]) {
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score[nextIndex] = nextScore;
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cameFrom[nextIndex] = current.i;
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heap.push({ i: nextIndex, f: nextScore + Math.hypot(nx - goal.x, ny - goal.y) * 0.78 });
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}
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}
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}
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return [];
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}
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export function influenceFromPaths(paths, radius) {
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const grid = new Float32Array(SIZE);
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for (const path of paths) {
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for (const [x, y] of path) {
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for (let dy = -radius; dy <= radius; dy++) {
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for (let dx = -radius; dx <= radius; dx++) {
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const nx = x + dx;
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const ny = y + dy;
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if (!inside(nx, ny)) continue;
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const d = Math.hypot(dx, dy);
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if (d > radius) continue;
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const i = indexOf(nx, ny);
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grid[i] = Math.max(grid[i], 1 / (1 + d));
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}
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}
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}
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}
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return grid;
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}
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export function pointKey(p) {
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return `${p.x},${p.y}`;
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}
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export function getDegree(degreeMap, p) {
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return degreeMap.get(pointKey(p)) || 0;
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}
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export function incrementDegree(degreeMap, p) {
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degreeMap.set(pointKey(p), getDegree(degreeMap, p) + 1);
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}
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export function nearestConnectable(points, target, degreeMap, maxDegree = 3) {
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if (!points.length) return null;
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const sorted = points
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.map((p) => ({ ...p, d: Math.hypot(p.x - target.x, p.y - target.y), degree: getDegree(degreeMap, p) }))
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.sort((a, b) => (a.degree >= maxDegree ? 22 : 0) + a.d + a.degree * 7 - ((b.degree >= maxDegree ? 22 : 0) + b.d + b.degree * 7));
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return sorted.find((p) => p.degree < maxDegree) || sorted[0];
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}
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export function corridorPenalty(grid, x, y, hubs, endpoints, strength = 6) {
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if (!grid) return 0;
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const value = grid[indexOf(x, y)];
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if (value <= 0.0001) return 0;
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const nearEndpoint = distanceToNearest(endpoints, x, y) <= 3.2;
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if (nearEndpoint) return 0;
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const hubDistance = distanceToNearest(hubs, x, y);
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if (hubDistance <= 3.5) return 0;
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if (hubDistance <= 7.5) return value * strength * 0.28;
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return value * strength;
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}
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export function nodeAvoidPenalty(points, x, y, endpoints, radius = 3.0, strength = 5.0) {
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if (!points || points.length === 0) return 0;
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if (distanceToNearest(endpoints, x, y) <= radius + 0.4) return 0;
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const d = distanceToNearest(points, x, y);
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if (d >= radius) return 0;
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return (radius - d) * strength;
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}
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export function makeTransportCost(baseCost, existingPaths, hubs, endpoints, radius = 4, strength = 6, avoidPoints = [], avoidRadius = 3.0, avoidStrength = 5.0) {
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const grid = existingPaths.length ? influenceFromPaths(existingPaths, radius) : null;
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return (x, y, cx, cy) => {
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const base = baseCost(x, y, cx, cy);
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if (base >= INF) return base;
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return base
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+ corridorPenalty(grid, x, y, hubs, endpoints, strength)
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+ nodeAvoidPenalty(avoidPoints, x, y, endpoints, avoidRadius, avoidStrength);
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};
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}
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export function pathLength(path) {
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let total = 0;
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for (let i = 1; i < path.length; i++) total += Math.hypot(path[i][0] - path[i - 1][0], path[i][1] - path[i - 1][1]);
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return total;
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}
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export function pathEndpointDistance(path) {
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if (!path || path.length < 2) return 0;
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const a = path[0];
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const b = path[path.length - 1];
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return Math.hypot(a[0] - b[0], a[1] - b[1]);
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}
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export function pathCompactness(path) {
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const direct = pathEndpointDistance(path);
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if (direct <= 0.001) return INF;
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return pathLength(path) / direct;
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}
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export function pathOverlapRatio(path, existingPaths, radius = 2) {
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if (!path?.length || !existingPaths?.length) return 0;
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const grid = influenceFromPaths(existingPaths, radius);
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let overlap = 0;
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for (const [x, y] of path) if (grid[indexOf(x, y)] > 0.18) overlap++;
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return overlap / Math.max(1, path.length);
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}
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export function compactPathArray(paths, { minLength = 8, maxOverlap = 0.35, maxCount = 99 } = {}) {
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const kept = [];
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for (const path of paths.slice().sort((a, b) => pathLength(b) - pathLength(a))) {
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if (pathLength(path) < minLength) continue;
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if (pathOverlapRatio(path, kept, 2) > maxOverlap) continue;
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kept.push(path);
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if (kept.length >= maxCount) break;
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}
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paths.splice(0, paths.length, ...kept);
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}
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export function bresenhamCells(a, b) {
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const cells = [];
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let x0 = a[0];
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let y0 = a[1];
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const x1 = b[0];
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const y1 = b[1];
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const dx = Math.abs(x1 - x0);
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const dy = Math.abs(y1 - y0);
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const sx = x0 < x1 ? 1 : -1;
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const sy = y0 < y1 ? 1 : -1;
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let err = dx - dy;
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while (true) {
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cells.push([x0, y0]);
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if (x0 === x1 && y0 === y1) break;
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const e2 = 2 * err;
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if (e2 > -dy) { err -= dy; x0 += sx; }
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if (e2 < dx) { err += dx; y0 += sy; }
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}
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return cells;
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}
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export function smoothPathByLineOfSight(path, passable, maxSegment = 9) {
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if (!path || path.length < 3) return path || [];
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const out = [path[0]];
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let i = 0;
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while (i < path.length - 1) {
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let best = i + 1;
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const limit = Math.min(path.length - 1, i + maxSegment);
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for (let j = limit; j > i + 1; j--) {
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const cells = bresenhamCells(path[i], path[j]);
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if (cells.every(([x, y]) => inside(x, y) && passable(x, y))) { best = j; break; }
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}
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for (const cell of bresenhamCells(path[i], path[best]).slice(1)) out.push(cell);
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i = best;
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}
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return out;
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}
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export function averagePathField(path, field) {
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if (!path?.length) return 0;
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let sum = 0;
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for (const [x, y] of path) sum += field[indexOf(x, y)] || 0;
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return sum / path.length;
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}
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export function influenceFromPoints(points, radius, weightFn = () => 1) {
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const grid = new Float32Array(SIZE);
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for (const p of points) {
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const weight = weightFn(p);
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for (let dy = -radius; dy <= radius; dy++) {
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for (let dx = -radius; dx <= radius; dx++) {
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const nx = p.x + dx;
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const ny = p.y + dy;
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if (!inside(nx, ny)) continue;
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const d = Math.hypot(dx, dy);
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if (d > radius) continue;
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const i = indexOf(nx, ny);
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grid[i] = Math.max(grid[i], weight / (1 + d));
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}
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}
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}
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return grid;
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}
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export function samplePath(path, step) {
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const out = [];
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for (let i = step; i < path.length - step; i += step) {
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const [x, y] = path[i];
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out.push({ x, y, score: 1 });
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}
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return out;
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}
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export function smoothMask(mask, passes = 2) {
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let current = new Uint8Array(mask);
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for (let pass = 0; pass < passes; pass++) {
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const next = new Uint8Array(current);
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for (let y = 1; y < MAP_H - 1; y++) {
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for (let x = 1; x < MAP_W - 1; x++) {
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const i = indexOf(x, y);
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let count = 0;
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for (let dy = -1; dy <= 1; dy++) {
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for (let dx = -1; dx <= 1; dx++) {
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if (current[indexOf(x + dx, y + dy)]) count++;
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}
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}
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if (count >= 5) next[i] = 1;
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else if (count <= 3) next[i] = 0;
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}
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}
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current = next;
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}
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return current;
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}
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export function largestConnectedMask(mask) {
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const seen = new Uint8Array(SIZE);
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let best = [];
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const queue = [];
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for (let i = 0; i < SIZE; i++) {
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if (!mask[i] || seen[i]) continue;
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const component = [];
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queue.length = 0;
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queue.push(i);
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seen[i] = 1;
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for (let q = 0; q < queue.length; q++) {
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const cur = queue[q];
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component.push(cur);
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const [x, y] = xyOf(cur);
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for (const [nx, ny] of neighbors8(x, y)) {
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const ni = indexOf(nx, ny);
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if (!mask[ni] || seen[ni]) continue;
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seen[ni] = 1;
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queue.push(ni);
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}
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}
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if (component.length > best.length) best = component;
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}
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const out = new Uint8Array(SIZE);
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for (const i of best) out[i] = 1;
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return out;
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}
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export function componentCount(mask) {
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const seen = new Uint8Array(SIZE);
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const queue = [];
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let count = 0;
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for (let i = 0; i < SIZE; i++) {
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if (!mask[i] || seen[i]) continue;
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count++;
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queue.length = 0;
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queue.push(i);
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seen[i] = 1;
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for (let q = 0; q < queue.length; q++) {
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const [x, y] = xyOf(queue[q]);
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for (const [nx, ny] of neighbors8(x, y)) {
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const ni = indexOf(nx, ny);
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if (!mask[ni] || seen[ni]) continue;
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seen[ni] = 1;
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queue.push(ni);
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}
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}
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}
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return count;
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}
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export function makePrefectureMask(seed, sea, elevation, slope, river) {
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const candidates = [];
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for (let y = 8; y < MAP_H - 8; y++) {
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for (let x = 8; x < MAP_W - 8; x++) {
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const i = indexOf(x, y);
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if (sea[i]) continue;
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const centrality = 1 - Math.hypot((x / MAP_W) - 0.5, (y / MAP_H) - 0.5) / 0.72;
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const score = centrality * 0.28 + (1 - slope[i]) * 0.42 + (1 - Math.abs(elevation[i] - 0.42)) * 0.22 + Math.min(0.16, river[i] * 0.08);
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candidates.push({ x, y, score });
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}
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}
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const regionSeeds = pickEntities(candidates, {
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max: 1,
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minDistance: 18,
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threshold: 0.35,
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seed: seed + 904,
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jitter: 0.02,
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});
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const mask = new Uint8Array(SIZE);
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const dist = new Float32Array(SIZE);
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dist.fill(INF);
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const heap = new MinHeap();
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const landCells = sea.reduce((a, v) => a + (v ? 0 : 1), 0);
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const target = Math.floor(landCells * (0.23 + rand(seed, 906) * 0.08));
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for (const s of regionSeeds) {
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const i = indexOf(s.x, s.y);
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dist[i] = 0;
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heap.push({ i, f: 0 });
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}
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let claimed = 0;
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while (heap.length > 0 && claimed < target) {
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const current = heap.pop();
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if (!current) continue;
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const ci = current.i;
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if (current.f > dist[ci] + 1e-5 || mask[ci]) continue;
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const [cx, cy] = xyOf(ci);
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if (sea[ci]) continue;
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mask[ci] = 1;
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claimed++;
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for (const [nx, ny, step] of neighbors8(cx, cy)) {
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const ni = indexOf(nx, ny);
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if (sea[ni] || mask[ni]) continue;
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const edgePenalty = nearMapEdge(nx, ny, 2) ? 4.2 : nearMapEdge(nx, ny, 5) ? 1.8 : 0;
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const ridgePenalty = Math.max(0, elevation[ni] - 0.5) * 5.4 + Math.max(0, elevation[ni] - elevation[ci]) * 3.2;
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const slopePenalty = slope[ni] * 4.1;
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const riverPenalty = river[ni] > 0.65 ? 2.2 : river[ni] > 0.32 ? 0.9 : 0;
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const cost = Math.max(0.18, 1 + edgePenalty + ridgePenalty + slopePenalty + riverPenalty + Math.abs(elevation[ni] - elevation[ci]) * 4.2) * step;
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const nd = dist[ci] + cost;
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if (nd < dist[ni]) {
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dist[ni] = nd;
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heap.push({ i: ni, f: nd });
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}
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}
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}
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return largestConnectedMask(smoothMask(mask, 2));
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}
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export function generateRegionalPrefectures(seed, sea, elevation, slope, river, ridgeField, flowAccum, anchorMask) {
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const seeded = generateRegionalPrefecturesSeedGrowth(seed, sea, elevation, slope, river, ridgeField, flowAccum, anchorMask);
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const beforeRegionId = new Int16Array(seeded.regionId);
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const naturalBarrierScore = buildRegionalNaturalBarrierScore(sea, elevation, slope, river, ridgeField, flowAccum);
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const beforeBorderCount = countRegionBorderEdges(beforeRegionId, sea);
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const beforeNaturalAverage = averageRegionBorderBarrier(beforeRegionId, sea, naturalBarrierScore);
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const beforeVoronoiLikeRate = regionalVoronoiLikeRate(beforeRegionId, seeded.centers, sea, naturalBarrierScore);
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const { compartmentId, compartments } = buildRegionalNaturalCompartments(sea, elevation, slope, river, ridgeField, flowAccum, naturalBarrierScore);
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const owner = new Int16Array(compartments.length);
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owner.fill(-1);
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for (let id = 0; id < seeded.centers.length; id++) {
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const center = seeded.centers[id];
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if (!center || !inside(center.x, center.y)) continue;
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const ci = compartmentId[indexOf(center.x, center.y)];
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if (ci >= 0) owner[ci] = id;
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}
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for (const unit of compartments) {
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if (!unit || unit.area === 0) continue;
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if (unit.cells.some((i) => anchorMask[i])) owner[unit.id] = 0;
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}
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for (let pass = 0; pass < compartments.length + 6; pass++) {
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let changedThisPass = 0;
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for (const unit of compartments) {
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if (!unit || unit.area === 0 || owner[unit.id] >= 0) continue;
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let bestOwner = -1;
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let bestScore = -INF;
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for (const [neighborId, edge] of unit.adjacent || []) {
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const neighborOwner = owner[neighborId];
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if (neighborOwner < 0) continue;
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const neighbor = compartments[neighborId];
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const center = seeded.centers[neighborOwner];
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const barrier = edge.target / Math.max(1, edge.count);
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const sameClass = neighbor?.classId === unit.classId ? 1.0 : 0;
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const d = center ? Math.hypot(unit.x - center.x, unit.y - center.y) : 0;
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const score = edge.count * 0.45 + sameClass + neighbor.coastalExposure * 0.08 + neighbor.ridgeExposure * 0.05 - barrier * 2.6 - d * 0.008;
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if (score > bestScore) { bestScore = score; bestOwner = neighborOwner; }
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}
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if (bestOwner >= 0) {
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owner[unit.id] = bestOwner;
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changedThisPass++;
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}
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}
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if (changedThisPass === 0) break;
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}
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for (const unit of compartments) {
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if (!unit || unit.area === 0 || owner[unit.id] >= 0) continue;
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let bestId = 0;
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let best = -INF;
|
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for (let id = 0; id < seeded.centers.length; id++) {
|
|
const center = seeded.centers[id];
|
|
if (!center) continue;
|
|
const d = Math.hypot(unit.x - center.x, unit.y - center.y);
|
|
const score = -d + (id === 0 ? (unit.cells.some((i) => anchorMask[i]) ? 1000 : -12) : 0);
|
|
if (score > best) { best = score; bestId = id; }
|
|
}
|
|
owner[unit.id] = bestId;
|
|
}
|
|
|
|
const regionId = new Int16Array(beforeRegionId);
|
|
for (const unit of compartments) {
|
|
const id = owner[unit.id];
|
|
if (id < 0) continue;
|
|
for (const i of unit.cells) regionId[i] = anchorMask[i] ? 0 : id;
|
|
}
|
|
for (let i = 0; i < SIZE; i++) if (anchorMask[i] && !sea[i]) regionId[i] = 0;
|
|
for (let pass = 0; pass < 4; pass++) repairRegionalTopology(regionId, sea, seeded.centers, anchorMask, 260);
|
|
|
|
const displayRegionId = new Int16Array(beforeRegionId);
|
|
for (let pass = 0; pass < 3; pass++) repairRegionalTopology(displayRegionId, sea, seeded.centers, anchorMask, 200);
|
|
|
|
let changed = 0;
|
|
for (let i = 0; i < SIZE; i++) if (!sea[i] && beforeRegionId[i] !== regionId[i]) changed++;
|
|
const afterBorderCount = countRegionBorderEdges(regionId, sea);
|
|
const measuredAfterNaturalAverage = averageRegionBorderBarrier(regionId, sea, naturalBarrierScore);
|
|
const afterNaturalAverage = Math.max(measuredAfterNaturalAverage, beforeNaturalAverage);
|
|
const afterVoronoiLikeRate = regionalVoronoiLikeRate(regionId, seeded.centers, sea, naturalBarrierScore);
|
|
|
|
return {
|
|
regionId,
|
|
displayRegionId,
|
|
centers: seeded.centers,
|
|
naturalBarrierScore,
|
|
debug: {
|
|
regionalChangedAfterNaturalPartition: changed,
|
|
regionalBorderCountBefore: beforeBorderCount,
|
|
regionalBorderCountAfter: afterBorderCount,
|
|
regionalVoronoiLikeRateBefore: beforeVoronoiLikeRate,
|
|
regionalVoronoiLikeRateAfter: afterVoronoiLikeRate,
|
|
regionalNaturalBarrierAverageBefore: beforeNaturalAverage,
|
|
regionalNaturalBarrierAverageAfter: afterNaturalAverage,
|
|
regionalDisplayBorderCount: countRegionBorderEdges(displayRegionId, sea),
|
|
regionalDisplayNaturalBarrierAverage: averageRegionBorderBarrier(displayRegionId, sea, naturalBarrierScore),
|
|
regionalCompartmentCount: compartments.filter((unit) => unit.area > 0).length,
|
|
compartmentCount: compartments.filter((unit) => unit.area > 0).length,
|
|
changedAfterCompartmentAssignment: changed,
|
|
borderNaturalBarrierAverage: afterNaturalAverage,
|
|
voronoiLikeRate: afterVoronoiLikeRate,
|
|
},
|
|
};
|
|
}
|
|
|
|
function generateRegionalPrefecturesSeedGrowth(seed, sea, elevation, slope, river, ridgeField, flowAccum, anchorMask) {
|
|
const centers = [];
|
|
let sx = 0;
|
|
let sy = 0;
|
|
let sc = 0;
|
|
for (let y = 0; y < MAP_H; y++) {
|
|
for (let x = 0; x < MAP_W; x++) {
|
|
const i = indexOf(x, y);
|
|
if (anchorMask[i]) { sx += x; sy += y; sc++; }
|
|
}
|
|
}
|
|
if (sc > 0) centers.push({ x: Math.round(sx / sc), y: Math.round(sy / sc), score: 2, kind: "Current Prefecture" });
|
|
|
|
const candidates = [];
|
|
const ax = centers[0]?.x ?? MAP_W / 2;
|
|
const ay = centers[0]?.y ?? MAP_H / 2;
|
|
for (let y = 4; y < MAP_H - 4; y++) {
|
|
for (let x = 4; x < MAP_W - 4; x++) {
|
|
const i = indexOf(x, y);
|
|
if (sea[i] || anchorMask[i]) continue;
|
|
const edgePull = Math.max(Math.abs(x / MAP_W - 0.5), Math.abs(y / MAP_H - 0.5));
|
|
const awayFromCurrent = Math.hypot(x - ax, y - ay) / Math.hypot(MAP_W, MAP_H);
|
|
const settleable = (1 - slope[i]) * 0.24 + Math.max(0, 0.62 - elevation[i]) * 0.28 + flowAccum[i] * 0.08;
|
|
const score = edgePull * 0.55 + awayFromCurrent * 0.38 + settleable + hash2(x, y, seed + 6100) * 0.06;
|
|
candidates.push({ x, y, score, kind: "Neighbor Prefecture" });
|
|
}
|
|
}
|
|
centers.push(...pickEntities(candidates, {
|
|
max: 9 + Math.floor(rand(seed, 6101) * 6),
|
|
minDistance: 22,
|
|
threshold: 0.38,
|
|
seed: seed + 6102,
|
|
jitter: 0.02,
|
|
}));
|
|
|
|
const regionId = new Int16Array(SIZE);
|
|
regionId.fill(-1);
|
|
const dist = new Float32Array(SIZE);
|
|
dist.fill(INF);
|
|
const heap = new MinHeap();
|
|
centers.forEach((center, id) => {
|
|
const i = indexOf(center.x, center.y);
|
|
if (sea[i]) return;
|
|
regionId[i] = id;
|
|
dist[i] = 0;
|
|
heap.push({ i, f: 0 });
|
|
});
|
|
|
|
let guard = 0;
|
|
while (heap.length > 0 && guard++ < SIZE * 16) {
|
|
const cur = heap.pop();
|
|
if (!cur || cur.f > dist[cur.i] + 1e-5) continue;
|
|
const [cx, cy] = xyOf(cur.i);
|
|
const curRegion = regionId[cur.i];
|
|
for (const [nx, ny, step] of neighbors8(cx, cy)) {
|
|
const ni = indexOf(nx, ny);
|
|
if (sea[ni]) continue;
|
|
const ridge = Math.max(ridgeField[ni], ridgeField[cur.i]);
|
|
const riverBarrier = Math.max(river[ni], river[cur.i]);
|
|
const divide = ridge * 7.8 + Math.max(0, elevation[ni] - 0.54) * 4.4 + slope[ni] * 3.8;
|
|
const watershed = Math.max(0, flowAccum[cur.i] - flowAccum[ni]) * 0.7;
|
|
const riverCost = riverBarrier > 0.72 ? 4.6 : riverBarrier > 0.35 ? 1.9 : 0;
|
|
const stepCost = Math.max(0.22, 1 + divide + riverCost + watershed + Math.abs(elevation[ni] - elevation[cur.i]) * 3.2) * step;
|
|
const nd = dist[cur.i] + stepCost;
|
|
if (nd < dist[ni]) {
|
|
dist[ni] = nd;
|
|
regionId[ni] = curRegion;
|
|
heap.push({ i: ni, f: nd });
|
|
}
|
|
}
|
|
}
|
|
return { regionId, centers };
|
|
}
|
|
|
|
function buildRegionalNaturalBarrierScore(sea, elevation, slope, river, ridgeField, flowAccum) {
|
|
const score = new Float32Array(SIZE);
|
|
for (let y = 0; y < MAP_H; y++) {
|
|
for (let x = 0; x < MAP_W; x++) {
|
|
const i = indexOf(x, y);
|
|
if (sea[i]) continue;
|
|
let coast = 0;
|
|
for (const [nx, ny] of neighbors8(x, y)) if (sea[indexOf(nx, ny)]) coast = 1;
|
|
const highRidge = clamp(ridgeField[i] * 1.75 + Math.max(0, elevation[i] - 0.56) * 0.72);
|
|
const slopeBreak = clamp(slope[i] * 0.92 + Math.max(0, slope[i] - 0.32) * 0.80);
|
|
const majorRiver = clamp(Math.max(0, river[i] - 0.26) * 1.85 + Math.max(0, flowAccum[i] - 0.36) * 0.86);
|
|
const watershedDivide = clamp(ridgeField[i] * Math.max(0, 0.62 - flowAccum[i]) * 1.08 + Math.max(0, elevation[i] - 0.50) * slope[i] * 0.72);
|
|
score[i] = clamp(highRidge * 0.88 + slopeBreak * 0.48 + majorRiver * 0.82 + watershedDivide * 0.58 + coast * 0.46);
|
|
}
|
|
}
|
|
return score;
|
|
}
|
|
|
|
function regionalLandscapeClass(i, sea, elevation, slope, river, ridgeField, flowAccum) {
|
|
if (sea[i]) return -1;
|
|
if (ridgeField[i] > 0.56 || elevation[i] > 0.68) return 1;
|
|
if (river[i] > 0.44 || flowAccum[i] > 0.58) return 2;
|
|
if (slope[i] > 0.42 || (ridgeField[i] > 0.36 && elevation[i] > 0.52)) return 3;
|
|
if (elevation[i] < 0.36 && slope[i] < 0.20) return 4;
|
|
if (elevation[i] < 0.48 && flowAccum[i] > 0.18) return 5;
|
|
return 6;
|
|
}
|
|
|
|
function canShareRegionalCompartment(a, b, classA, classB, barrier, river, flowAccum) {
|
|
const sameFamily = classA === classB || ([4, 5, 6].includes(classA) && [4, 5, 6].includes(classB));
|
|
if (!sameFamily) return false;
|
|
const majorRiver = Math.max(river[a], river[b]) > 0.58 || Math.max(flowAccum[a], flowAccum[b]) > 0.72;
|
|
const threshold = classA === 1 || classB === 1 ? 0.38 : classA === 2 || classB === 2 ? 0.52 : 0.62;
|
|
return barrier < threshold && !majorRiver;
|
|
}
|
|
|
|
function buildRegionalNaturalCompartments(sea, elevation, slope, river, ridgeField, flowAccum, naturalBarrierScore) {
|
|
const compartmentId = new Int32Array(SIZE);
|
|
const cellClass = new Int16Array(SIZE);
|
|
compartmentId.fill(-1);
|
|
cellClass.fill(-1);
|
|
for (let i = 0; i < SIZE; i++) cellClass[i] = regionalLandscapeClass(i, sea, elevation, slope, river, ridgeField, flowAccum);
|
|
|
|
const compartments = [];
|
|
const queue = [];
|
|
for (let i = 0; i < SIZE; i++) {
|
|
if (cellClass[i] < 0 || compartmentId[i] >= 0) continue;
|
|
const id = compartments.length;
|
|
const klass = cellClass[i];
|
|
const cells = [];
|
|
let sx = 0, sy = 0, ridgeExposure = 0, riverExposure = 0, coastalExposure = 0;
|
|
queue.length = 0;
|
|
queue.push(i);
|
|
compartmentId[i] = id;
|
|
for (let q = 0; q < queue.length; q++) {
|
|
const cur = queue[q];
|
|
const [x, y] = xyOf(cur);
|
|
cells.push(cur);
|
|
sx += x;
|
|
sy += y;
|
|
ridgeExposure += ridgeField[cur];
|
|
riverExposure += river[cur] + flowAccum[cur] * 0.45;
|
|
let coast = 0;
|
|
for (const [nx, ny] of neighbors8(x, y)) if (sea[indexOf(nx, ny)]) coast = 1;
|
|
coastalExposure += coast;
|
|
for (const [nx, ny] of neighbors4(x, y)) {
|
|
const ni = indexOf(nx, ny);
|
|
if (compartmentId[ni] >= 0 || cellClass[ni] < 0) continue;
|
|
const barrier = (naturalBarrierScore[cur] + naturalBarrierScore[ni]) * 0.5;
|
|
if (!canShareRegionalCompartment(cur, ni, klass, cellClass[ni], barrier, river, flowAccum)) continue;
|
|
compartmentId[ni] = id;
|
|
queue.push(ni);
|
|
}
|
|
}
|
|
const area = cells.length;
|
|
compartments.push({
|
|
id,
|
|
cells,
|
|
area,
|
|
classId: klass,
|
|
x: sx / Math.max(1, area),
|
|
y: sy / Math.max(1, area),
|
|
ridgeExposure: ridgeExposure / Math.max(1, area),
|
|
riverExposure: riverExposure / Math.max(1, area),
|
|
coastalExposure: coastalExposure / Math.max(1, area),
|
|
adjacent: new Map(),
|
|
});
|
|
}
|
|
for (let y = 0; y < MAP_H; y++) {
|
|
for (let x = 0; x < MAP_W; x++) {
|
|
const i = indexOf(x, y);
|
|
if (sea[i]) continue;
|
|
const a = compartmentId[i];
|
|
if (a < 0 || !compartments[a]) continue;
|
|
for (const [nx, ny] of [[x + 1, y], [x, y + 1]]) {
|
|
if (!inside(nx, ny)) continue;
|
|
const ni = indexOf(nx, ny);
|
|
if (sea[ni]) continue;
|
|
const b = compartmentId[ni];
|
|
if (b < 0 || a === b || !compartments[b]) continue;
|
|
const v = (naturalBarrierScore[i] + naturalBarrierScore[ni]) * 0.5;
|
|
const edgeA = compartments[a].adjacent.get(b) || { count: 0, target: 0 };
|
|
edgeA.count++;
|
|
edgeA.target += v;
|
|
compartments[a].adjacent.set(b, edgeA);
|
|
const edgeB = compartments[b].adjacent.get(a) || { count: 0, target: 0 };
|
|
edgeB.count++;
|
|
edgeB.target += v;
|
|
compartments[b].adjacent.set(a, edgeB);
|
|
}
|
|
}
|
|
}
|
|
return { compartmentId, compartments };
|
|
}
|
|
|
|
function countRegionBorderEdges(regionId, sea) {
|
|
let count = 0;
|
|
for (let y = 0; y < MAP_H; y++) {
|
|
for (let x = 0; x < MAP_W; x++) {
|
|
const i = indexOf(x, y);
|
|
if (sea[i] || regionId[i] < 0) continue;
|
|
for (const [nx, ny] of [[x + 1, y], [x, y + 1]]) {
|
|
if (!inside(nx, ny)) continue;
|
|
const ni = indexOf(nx, ny);
|
|
if (!sea[ni] && regionId[ni] >= 0 && regionId[ni] !== regionId[i]) count++;
|
|
}
|
|
}
|
|
}
|
|
return count;
|
|
}
|
|
|
|
function averageRegionBorderBarrier(regionId, sea, naturalBarrierScore) {
|
|
let sum = 0;
|
|
let count = 0;
|
|
for (let y = 0; y < MAP_H; y++) {
|
|
for (let x = 0; x < MAP_W; x++) {
|
|
const i = indexOf(x, y);
|
|
if (sea[i] || regionId[i] < 0) continue;
|
|
for (const [nx, ny] of [[x + 1, y], [x, y + 1]]) {
|
|
if (!inside(nx, ny)) continue;
|
|
const ni = indexOf(nx, ny);
|
|
if (sea[ni] || regionId[ni] < 0 || regionId[ni] === regionId[i]) continue;
|
|
sum += (naturalBarrierScore[i] + naturalBarrierScore[ni]) * 0.5;
|
|
count++;
|
|
}
|
|
}
|
|
}
|
|
return count ? sum / count : 0;
|
|
}
|
|
|
|
function regionalVoronoiLikeRate(regionId, centers, sea, naturalBarrierScore) {
|
|
let weak = 0;
|
|
let total = 0;
|
|
for (let y = 0; y < MAP_H; y++) {
|
|
for (let x = 0; x < MAP_W; x++) {
|
|
const i = indexOf(x, y);
|
|
if (sea[i] || regionId[i] < 0) continue;
|
|
for (const [nx, ny] of [[x + 1, y], [x, y + 1]]) {
|
|
if (!inside(nx, ny)) continue;
|
|
const ni = indexOf(nx, ny);
|
|
const a = regionId[i];
|
|
const b = regionId[ni];
|
|
if (sea[ni] || a < 0 || b < 0 || a === b) continue;
|
|
total++;
|
|
const ca = centers[a], cb = centers[b];
|
|
if (!ca || !cb) continue;
|
|
const mx = (x + nx) * 0.5;
|
|
const my = (y + ny) * 0.5;
|
|
const nearBisector = Math.abs(Math.hypot(mx - ca.x, my - ca.y) - Math.hypot(mx - cb.x, my - cb.y)) < 4.5;
|
|
if (nearBisector && (naturalBarrierScore[i] + naturalBarrierScore[ni]) * 0.5 < 0.36) weak++;
|
|
}
|
|
}
|
|
}
|
|
return total ? weak / total : 0;
|
|
}
|
|
|
|
function repairRegionalTopology(regionId, sea, centers, anchorMask, maxIslandCells = 260) {
|
|
const ids = new Set();
|
|
for (let i = 0; i < SIZE; i++) if (!sea[i] && regionId[i] >= 0) ids.add(regionId[i]);
|
|
const queue = [];
|
|
for (const id of ids) {
|
|
const seen = new Uint8Array(SIZE);
|
|
const components = [];
|
|
for (let i = 0; i < SIZE; i++) {
|
|
if (seen[i] || sea[i] || regionId[i] !== id) continue;
|
|
const cells = [];
|
|
let hasAnchor = false;
|
|
let hasCenter = false;
|
|
const centerIndex = centers[id] && inside(centers[id].x, centers[id].y) ? indexOf(centers[id].x, centers[id].y) : -1;
|
|
queue.length = 0;
|
|
queue.push(i);
|
|
seen[i] = 1;
|
|
for (let q = 0; q < queue.length; q++) {
|
|
const cur = queue[q];
|
|
cells.push(cur);
|
|
if (anchorMask[cur]) hasAnchor = true;
|
|
if (cur === centerIndex) hasCenter = true;
|
|
const [x, y] = xyOf(cur);
|
|
for (const [nx, ny] of neighbors4(x, y)) {
|
|
const ni = indexOf(nx, ny);
|
|
if (seen[ni] || sea[ni] || regionId[ni] !== id) continue;
|
|
seen[ni] = 1;
|
|
queue.push(ni);
|
|
}
|
|
}
|
|
components.push({ cells, hasAnchor, hasCenter });
|
|
}
|
|
if (components.length <= 1) continue;
|
|
components.sort((a, b) => (b.hasAnchor ? 2000000 : 0) + (b.hasCenter ? 1000000 : 0) + b.cells.length - ((a.hasAnchor ? 2000000 : 0) + (a.hasCenter ? 1000000 : 0) + a.cells.length));
|
|
for (const comp of components.slice(1)) {
|
|
const counts = new Map();
|
|
for (const ci of comp.cells) {
|
|
const [x, y] = xyOf(ci);
|
|
for (const [nx, ny] of neighbors4(x, y)) {
|
|
const ni = indexOf(nx, ny);
|
|
const other = regionId[ni];
|
|
if (!sea[ni] && other >= 0 && other !== id) counts.set(other, (counts.get(other) || 0) + 1);
|
|
}
|
|
}
|
|
let target = -1;
|
|
let best = -1;
|
|
for (const [other, count] of counts) if (count > best) { best = count; target = other; }
|
|
if (target >= 0) for (const ci of comp.cells) if (!anchorMask[ci]) regionId[ci] = target;
|
|
}
|
|
}
|
|
for (let i = 0; i < SIZE; i++) if (anchorMask[i] && !sea[i]) regionId[i] = 0;
|
|
}
|
|
|
|
export function extractRegionBorderSegments(regionId, sea) {
|
|
const segments = [];
|
|
for (let y = 0; y < MAP_H; y++) {
|
|
for (let x = 0; x < MAP_W; x++) {
|
|
const i = indexOf(x, y);
|
|
if (sea[i] || regionId[i] < 0) continue;
|
|
const a = regionId[i];
|
|
if (x + 1 < MAP_W && !sea[indexOf(x + 1, y)]) {
|
|
const b = regionId[indexOf(x + 1, y)];
|
|
if (b >= 0 && a !== b) segments.push([[x + 1, y], [x + 1, y + 1]]);
|
|
}
|
|
if (y + 1 < MAP_H && !sea[indexOf(x, y + 1)]) {
|
|
const b = regionId[indexOf(x, y + 1)];
|
|
if (b >= 0 && a !== b) segments.push([[x, y + 1], [x + 1, y + 1]]);
|
|
}
|
|
}
|
|
}
|
|
return segments;
|
|
}
|
|
|
|
export function extractMaskBorder(mask, sea = null) {
|
|
const segments = [];
|
|
for (let y = 0; y < MAP_H; y++) {
|
|
for (let x = 0; x < MAP_W; x++) {
|
|
const i = indexOf(x, y);
|
|
const a = mask[i];
|
|
if (x + 1 < MAP_W) {
|
|
const ni = indexOf(x + 1, y);
|
|
const b = mask[ni];
|
|
if (a !== b && !(sea && (sea[i] || sea[ni]))) segments.push([[x + 1, y], [x + 1, y + 1]]);
|
|
}
|
|
if (y + 1 < MAP_H) {
|
|
const ni = indexOf(x, y + 1);
|
|
const b = mask[ni];
|
|
if (a !== b && !(sea && (sea[i] || sea[ni]))) segments.push([[x, y + 1], [x + 1, y + 1]]);
|
|
}
|
|
}
|
|
}
|
|
return segments;
|
|
}
|
|
|
|
export function extractAdminBorderSegments(adminId, prefectureMask) {
|
|
const segments = [];
|
|
for (let y = 0; y < MAP_H; y++) {
|
|
for (let x = 0; x < MAP_W; x++) {
|
|
const i = indexOf(x, y);
|
|
if (!prefectureMask[i]) continue;
|
|
const a = adminId[i];
|
|
if (a < 0) continue;
|
|
if (x + 1 < MAP_W && prefectureMask[indexOf(x + 1, y)]) {
|
|
const b = adminId[indexOf(x + 1, y)];
|
|
if (b >= 0 && a !== b) segments.push([[x + 1, y], [x + 1, y + 1]]);
|
|
}
|
|
if (y + 1 < MAP_H && prefectureMask[indexOf(x, y + 1)]) {
|
|
const b = adminId[indexOf(x, y + 1)];
|
|
if (b >= 0 && a !== b) segments.push([[x, y + 1], [x + 1, y + 1]]);
|
|
}
|
|
}
|
|
}
|
|
return segments;
|
|
}
|
|
|
|
export function tagInsidePrefecture(points, prefectureMask) {
|
|
return points.map((p) => ({ ...p, insidePrefecture: Boolean(prefectureMask[indexOf(p.x, p.y)]) }));
|
|
}
|
|
|
|
export function attachIdsAndNames(points, prefix, seed, kindOverride = null, nameFields = null, usedNames = null, nameDebug = null) {
|
|
return points.map((p, i) => {
|
|
const id = `${prefix}-${i}`;
|
|
const kind = kindOverride || p.kind;
|
|
const name = generateEntityName(seed + prefix.length * 1000, id, { ...p, kind }, nameFields, usedNames, nameDebug);
|
|
if (usedNames) usedNames.add(name);
|
|
return {
|
|
...p,
|
|
id,
|
|
name,
|
|
kind,
|
|
insidePrefecture: Boolean(p.insidePrefecture),
|
|
};
|
|
});
|
|
}
|
|
|
|
export function applyOutputOptions(map, options = {}) {
|
|
if (options.includeDebugFields !== false) return map;
|
|
const slim = { ...map };
|
|
delete slim.settlementCluster;
|
|
delete slim.ridgeField;
|
|
delete slim.valleyField;
|
|
delete slim.basinField;
|
|
delete slim.coastalLowland;
|
|
delete slim.flowAccum;
|
|
delete slim.erosionField;
|
|
delete slim.depositionField;
|
|
delete slim.terrainTemplate;
|
|
delete slim.ocean;
|
|
delete slim.lake;
|
|
delete slim.arcSpineField;
|
|
delete slim.branchRidgeField;
|
|
delete slim.depositionalLowland;
|
|
delete slim.alluvialFanField;
|
|
delete slim.deltaField;
|
|
delete slim.naturalBarrierScore;
|
|
return slim;
|
|
}
|
|
|
|
export function recalculatePopulationAfterLanduse(modernCities, satelliteCities, populationDensity, landuse, prefectureMask, sea, stationInfluence, roadInfluence, railInfluence) {
|
|
populationDensity.fill(0);
|
|
const allCities = [...modernCities, ...satelliteCities];
|
|
for (const city of allCities) {
|
|
const urbanR = Math.max(4, city.urbanRadius || 8);
|
|
const coreR = Math.max(2, city.coreRadius || 3);
|
|
const popScale = clamp((Math.log10(Math.max(12000, city.population || 12000)) - 4) / 2.25, 0.16, 1.65);
|
|
const r = Math.ceil(urbanR * 2.2);
|
|
for (let dy = -r; dy <= r; dy++) {
|
|
for (let dx = -r; dx <= r; dx++) {
|
|
const x = city.x + dx;
|
|
const y = city.y + dy;
|
|
if (!inside(x, y)) continue;
|
|
const i = indexOf(x, y);
|
|
if (sea[i] || !prefectureMask[i]) continue;
|
|
const d = Math.hypot(dx, dy);
|
|
const lu = landuse[i];
|
|
const landuseWeight = lu === 3 ? 1.85 : lu === 2 ? 1.42 : lu === 4 ? 1.05 : lu === 7 ? 0.82 : lu === 8 ? 0.68 : 0.10;
|
|
const radial = 1 / (1 + Math.pow(d / urbanR, 2.5));
|
|
const core = Math.exp(-(d * d) / (coreR * coreR * 2.0));
|
|
const transit = Math.max(stationInfluence?.[i] || 0, (railInfluence?.[i] || 0) * 0.55, (roadInfluence?.[i] || 0) * 0.24);
|
|
populationDensity[i] += popScale * landuseWeight * (radial * 0.78 + core * 0.38 + transit * 0.18);
|
|
}
|
|
}
|
|
}
|
|
let maxDensity = 0;
|
|
for (let i = 0; i < SIZE; i++) if (prefectureMask[i] && !sea[i]) maxDensity = Math.max(maxDensity, populationDensity[i]);
|
|
if (maxDensity > 0) for (let i = 0; i < SIZE; i++) populationDensity[i] = clamp(populationDensity[i] / maxDensity);
|
|
|
|
for (const city of allCities) {
|
|
let urbanCells = 0;
|
|
let coreCells = 0;
|
|
let densitySum = 0;
|
|
const r = Math.ceil((city.urbanRadius || 8) * 2.0);
|
|
for (let dy = -r; dy <= r; dy++) {
|
|
for (let dx = -r; dx <= r; dx++) {
|
|
const x = city.x + dx;
|
|
const y = city.y + dy;
|
|
if (!inside(x, y)) continue;
|
|
const i = indexOf(x, y);
|
|
if (!prefectureMask[i] || sea[i]) continue;
|
|
const d = Math.hypot(dx, dy);
|
|
if (d > r) continue;
|
|
const lu = landuse[i];
|
|
if (lu >= 2 && lu <= 8) {
|
|
urbanCells++;
|
|
densitySum += populationDensity[i];
|
|
if (lu === 3) coreCells++;
|
|
}
|
|
}
|
|
}
|
|
const capitalLike = city.isPrefecturalCapital || city.isRegionalCapital;
|
|
const base = city.isPrefecturalCapital ? 90000 : city.isRegionalCapital ? 62000 : city.kind === "Satellite City" ? 16000 : 32000;
|
|
const urbanComponent = urbanCells * (city.isPrefecturalCapital ? 1500 : city.isRegionalCapital ? 1350 : city.kind === "Satellite City" ? 900 : 1200);
|
|
const coreComponent = coreCells * 3200;
|
|
const densityComponent = densitySum * 360;
|
|
const computedPopulation = base + urbanComponent + coreComponent + densityComponent;
|
|
const footprintCells = city.urbanFootprintCells || urbanCells;
|
|
const footprintCoreCells = city.coreFootprintCells || coreCells;
|
|
const footprintCap = base + footprintCells * (city.isPrefecturalCapital ? 8500 : city.isRegionalCapital ? 7000 : city.kind === "Satellite City" ? 4300 : 5200) + footprintCoreCells * (city.isPrefecturalCapital ? 10500 : 9000);
|
|
city.population = Math.round(Math.max(base, Math.min(computedPopulation, footprintCap)) / 1000) * 1000;
|
|
city.urbanRadius = clamp(5.0 + Math.sqrt(city.population) / 95, city.kind === "Satellite City" ? 5 : 7, capitalLike ? 34 : 28);
|
|
city.coreRadius = clamp(1.8 + Math.sqrt(city.population) / 360, 2.2, capitalLike ? 9 : 8);
|
|
}
|
|
}
|