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Refactor: merge duplicated rules, split the largest files by topic (t21)

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- One helper each for wall and mold refunds, tube edges and lanes, pipe text, piece dimensions,
  font lookup, reach circles and surface averaging.
- previews, smooth, notebook, materials, worldgen and selection split into topic files
  (preview-drill, preview-selection, smooth-shaders, notebook-market, notebook-blueprints,
  material-tables, worldgen-helpers, selection-pickers, selection-panels).
- Every suite's output identical apart from timings; seeds make the same worlds.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
44r0n7
2026-10-24 22:35:12 -04:00
co-authored by Claude Opus 5.5
parent 9937683a2c
commit 7fa1056e09
28 changed files with 1036 additions and 953 deletions
Download Patch File Download Diff File Expand all files Collapse all files
src/sim/blocks.js
+10 -3
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@@ -71,6 +71,15 @@ function blockIntegrity(b) {
void v;
return n;
}
// One cell of a wall or mold being taken back: metal is counted toward bars (returns 1), other
// walls give their rubble back.
function removeWallCell(i, wall) {
const m = mat[i];
if (BAR_OF[m] && PH[wall] === PH_ITEM) { setCell(i, EMPTY, temp[i], 0); return 1; }
if (YLD[m] && bagAdd(YLD[m], 1, false) === 0) { setCell(i, YLD[m], temp[i], 0); droppedLast++; } // bag full: it crumbles in place
else setCell(i, EMPTY, temp[i], 0);
return 0;
}
function removeBlock(bx, by) {
const b = by * BW + bx, code = blockP[b], v = blockV[b];
if (!code) return 0;
@@ -82,9 +91,7 @@ function removeBlock(bx, by) {
const m = mat[i], p = part[i];
if (code === BP_WALL) {
if (PH[m] === PH_SOLID && !(flags[i] & F_NAT) && !PARTMAT[m] && m !== SPRING) {
if (BAR_OF[m] && PH[v] === PH_ITEM) { metal++; setCell(i, EMPTY, temp[i], 0); }
else if (YLD[m] && bagAdd(YLD[m], 1, false) === 0) { setCell(i, YLD[m], temp[i], 0); droppedLast++; } // bag full: it crumbles in place
else setCell(i, EMPTY, temp[i], 0);
metal += removeWallCell(i, v);
n++;
}
} else if (isPipeCode(code)) {
src/sim/items.js
+15 -8
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@@ -62,13 +62,19 @@ function entTubeMove(e, x, y, tubeOnly = false) {
for (let xx = Math.min(e.ix, x); xx <= Math.max(e.ix, x); xx++) if (!entTubeFree(xx, yy)) return false;
e.x = e.ix = x; e.y = e.iy = y; e.vx = e.vy = 0; return true;
}
function entTubeLane(y, iy) { return Math.max(y & ~3, Math.min((y & ~3) + 2, iy)); }
function entTubeEdge(e, dx, dy, k) {
const x = e.ix + (dx > 0 ? BAR_W : dx < 0 ? -1 : k), y = e.iy + (dy > 0 ? BAR_H : dy < 0 ? -1 : k);
return x < 0 || y < 0 || x >= W || y >= H ? -1 : y * W + x;
}
function entTubeEnter(e, dx, dy) {
for (let k = 0; k < (dx ? BAR_H : BAR_W); k++) {
const xx = e.ix + (dx > 0 ? BAR_W : dx < 0 ? -1 : k), yy = e.iy + (dy > 0 ? BAR_H : dy < 0 ? -1 : k);
if (xx < 0 || yy < 0 || xx >= W || yy >= H) continue;
const p = part[yy * W + xx]; if (p < P_TU || p > P_TR || (!dx && TDX[p]) || dx * TDX[p] + dy * TDY[p] < 0) continue;
const i = entTubeEdge(e, dx, dy, k);
if (i < 0) continue;
const xx = i % W, yy = (i / W) | 0;
const p = part[i]; if (p < P_TU || p > P_TR || (!dx && TDX[p]) || dx * TDX[p] + dy * TDY[p] < 0) continue;
// Vertical screws require the full width; horizontal screws use the nearest two-row lane.
const x = (xx & ~3), y = Math.max(yy & ~3, Math.min((yy & ~3) + 2, e.iy));
const x = (xx & ~3), y = entTubeLane(yy, e.iy);
if (entTubeMove(e, x, TDX[p] || dy ? y : e.iy, true)) return true;
}
return false;
@@ -80,14 +86,15 @@ function entTubeTick(e, p) {
const dx = TDX[p], dy = TDY[p];
let x = e.ix + dx, y = e.iy + dy, next = 0, ax = 0, ay = 0;
for (let k = 0; k < (dx ? BAR_H : BAR_W); k++) {
const xx = e.ix + (dx > 0 ? BAR_W : dx < 0 ? -1 : k), yy = e.iy + (dy > 0 ? BAR_H : dy < 0 ? -1 : k);
if (xx < 0 || yy < 0 || xx >= W || yy >= H) return;
const q = part[yy * W + xx];
const i = entTubeEdge(e, dx, dy, k);
if (i < 0) return;
const xx = i % W, yy = (i / W) | 0;
const q = part[i];
if (q >= P_TU && q <= P_TR && q !== p) { next = q; ax = xx; ay = yy; break; }
}
if (next) {
if (TDX[next] === -dx && TDY[next] === -dy) return;
x = ax & ~3; y = Math.max(ay & ~3, Math.min((ay & ~3) + 2, e.iy));
x = ax & ~3; y = entTubeLane(ay, e.iy);
if (entTubeMove(e, x, y, true)) stats.moved++;
return;
}
src/sim/material-tables.js
+49
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@@ -0,0 +1,49 @@
// Material tables: typed properties, casting groups, flags, parts and tool tiers.
// Typed property tables
const PH = new Uint8Array(NMAT), DENS = new Float32Array(NMAT), KC = new Float32Array(NMAT), ICAP = new Float32Array(NMAT),
HARD = new Uint8Array(NMAT), YLD = new Uint8Array(NMAT), MELT = new Float32Array(NMAT), MELTTO = new Uint8Array(NMAT),
SMELTP = new Float32Array(NMAT), FRZ = new Float32Array(NMAT), FRZTO = new Uint8Array(NMAT), BOIL = new Float32Array(NMAT),
BOILTO = new Uint8Array(NMAT), CONDT = new Float32Array(NMAT), CONDTO = new Uint8Array(NMAT), IGN = new Float32Array(NMAT),
FLAME = new Float32Array(NMAT), FLAMEF = new Float32Array(NMAT), FUEL = new Uint8Array(NMAT), BURNTO = new Uint8Array(NMAT),
ASHP = new Float32Array(NMAT), FLUID = new Float32Array(NMAT), SPREAD = new Uint8Array(NMAT), STICK = new Float32Array(NMAT),
ALPHA = new Float32Array(NMAT), LIQT = new Float32Array(NMAT), BAGOK = new Uint8Array(NMAT), PARTMAT = new Uint8Array(NMAT),
RELAX = new Float32Array(NMAT), COLR = new Uint8Array(NMAT), COLG = new Uint8Array(NMAT), COLB = new Uint8Array(NMAT),
CVAR = new Uint8Array(NMAT);
for (let i = 0; i < NMAT; i++) {
const d = MD[i];
PH[i] = d.ph; DENS[i] = d.dens; KC[i] = d.k; ICAP[i] = 1 / d.cap; HARD[i] = d.hard; YLD[i] = d.yld;
MELT[i] = d.melt; MELTTO[i] = d.meltTo; SMELTP[i] = d.smelt; FRZ[i] = d.freeze; FRZTO[i] = d.freezeTo;
BOIL[i] = d.boil; BOILTO[i] = d.boilTo; CONDT[i] = d.condT; CONDTO[i] = d.condTo; IGN[i] = d.ign; FLAME[i] = d.flame;
FLAMEF[i] = d.flameF; FUEL[i] = d.fuel; BURNTO[i] = d.burnTo; ASHP[i] = d.ashP; FLUID[i] = d.fluid; SPREAD[i] = d.spread;
STICK[i] = d.stick; ALPHA[i] = d.alpha; LIQT[i] = d.liqT; BAGOK[i] = d.bag ? 1 : 0; PARTMAT[i] = d.partMat ? 1 : 0;
COLR[i] = d.col[0]; COLG[i] = d.col[1]; COLB[i] = d.col[2]; CVAR[i] = d.v;
RELAX[i] = d.ph === PH_LIQUID ? 0.0006 : d.ph === PH_POWDER ? 0.0005 : d.ph === PH_GAS ? 0.003 : 0.0004;
}
// what molds cast (molten metals, and molten glass) and what they set into
const CASTMETAL = new Uint8Array(NMAT); for (const m of [MCU, MFE, MST, MSN, MZN, MAG, MAU, MBZ, MBS, MGL]) CASTMETAL[m] = 1;
// tier as a drill bit or tank (0: too soft to be a bit)
const METAL_TIER = new Int8Array(NMAT).fill(-1); METAL_TIER[COPPER] = 1; METAL_TIER[IRON] = 2; METAL_TIER[STEEL] = 3;
METAL_TIER[TIN] = 0; METAL_TIER[GLASS] = 0; METAL_TIER[ZINC] = 0; METAL_TIER[SILVER] = 0; METAL_TIER[GOLD] = 0; METAL_TIER[BRONZE] = 1; METAL_TIER[BRASS] = 1;
const SOLIDMETAL = new Uint8Array(NMAT); for (const m of [COPPER, IRON, STEEL, TIN, ZINC, SILVER, GOLD, BRONZE, BRASS, GLASS]) SOLIDMETAL[m] = 1;
// ---------- Flags & parts ----------
const F_NAT = 1, F_CAST = 2, F_BURN = 4;
const P_NONE = 0, P_TU = 1, P_TD = 2, P_TL = 3, P_TR = 4, P_GRATE = 5, P_GOPEN = 6, P_WHEEL = 7, P_INTAKE = 8, P_FILTER = 9, P_PIPE = 10;
const TDX = [0, 0, 0, -1, 1], TDY = [0, -1, 1, 0, 0];
// ---------- Tool tiers ----------
// reach: how far from the bot the drill works. Harder rock takes longer, and
// every new bit cuts faster and further.
const BIT_TIERS = [
{ name: 'Stone bit', hard: 3, speed: 0.7, reach: 16 },
{ name: 'Copper bit', hard: 4, speed: 1.0, reach: 24 },
{ name: 'Iron bit', hard: 5, speed: 1.5, reach: 34 },
{ name: 'Steel bit', hard: 6, speed: 2.2, reach: 46 },
];
const TANK_TIERS = [
{ name: 'Canvas sack', cap: 1500 },
{ name: 'Copper tank', cap: 4000 },
{ name: 'Iron tank', cap: 10000 },
{ name: 'Steel tank', cap: 25000 },
];
const REACH = 64;
src/sim/materials.js
+1 -50
View File
@@ -1,4 +1,4 @@
// Material ids, the material table (def), per-material property arrays, cell flags and part
// Material definitions: ids, properties and metal families.
// ids, and drill/tank tiers.
// ---------- Material ids ----------
const EMPTY = 0, GRASS = 1, DIRT = 2, LDIRT = 3, SAND = 4, GRAVEL = 5, CLAY = 6, STONE = 7, GRANITE = 8, BASALT = 9,
@@ -117,52 +117,3 @@ def(BARSB, { name: 'Stone block', ph: PH_ITEM, col: [172, 166, 154], v: 0, dens:
def(PIPE, { name: 'Pipe', col: [176, 112, 72], v: 4, k: 0.04, cap: 1.5, hard: 4, melt: 1085, meltTo: MCU, partMat: true });
def(DOCKW, { name: 'Trade dock', col: [70, 82, 96], v: 6, k: 0.01, cap: 2, hard: 9, yld: 0, partMat: true, desc: 'The claim office\'s trade dock. Whatever drops through the grate in its floor is sold.' });
def(HULL, { name: 'Machine', col: [84, 92, 102], v: 6, k: 0.03, cap: 1.5, hard: 4, melt: 1085, meltTo: MCU, partMat: true });
// Typed property tables
const PH = new Uint8Array(NMAT), DENS = new Float32Array(NMAT), KC = new Float32Array(NMAT), ICAP = new Float32Array(NMAT),
HARD = new Uint8Array(NMAT), YLD = new Uint8Array(NMAT), MELT = new Float32Array(NMAT), MELTTO = new Uint8Array(NMAT),
SMELTP = new Float32Array(NMAT), FRZ = new Float32Array(NMAT), FRZTO = new Uint8Array(NMAT), BOIL = new Float32Array(NMAT),
BOILTO = new Uint8Array(NMAT), CONDT = new Float32Array(NMAT), CONDTO = new Uint8Array(NMAT), IGN = new Float32Array(NMAT),
FLAME = new Float32Array(NMAT), FLAMEF = new Float32Array(NMAT), FUEL = new Uint8Array(NMAT), BURNTO = new Uint8Array(NMAT),
ASHP = new Float32Array(NMAT), FLUID = new Float32Array(NMAT), SPREAD = new Uint8Array(NMAT), STICK = new Float32Array(NMAT),
ALPHA = new Float32Array(NMAT), LIQT = new Float32Array(NMAT), BAGOK = new Uint8Array(NMAT), PARTMAT = new Uint8Array(NMAT),
RELAX = new Float32Array(NMAT), COLR = new Uint8Array(NMAT), COLG = new Uint8Array(NMAT), COLB = new Uint8Array(NMAT),
CVAR = new Uint8Array(NMAT);
for (let i = 0; i < NMAT; i++) {
const d = MD[i];
PH[i] = d.ph; DENS[i] = d.dens; KC[i] = d.k; ICAP[i] = 1 / d.cap; HARD[i] = d.hard; YLD[i] = d.yld;
MELT[i] = d.melt; MELTTO[i] = d.meltTo; SMELTP[i] = d.smelt; FRZ[i] = d.freeze; FRZTO[i] = d.freezeTo;
BOIL[i] = d.boil; BOILTO[i] = d.boilTo; CONDT[i] = d.condT; CONDTO[i] = d.condTo; IGN[i] = d.ign; FLAME[i] = d.flame;
FLAMEF[i] = d.flameF; FUEL[i] = d.fuel; BURNTO[i] = d.burnTo; ASHP[i] = d.ashP; FLUID[i] = d.fluid; SPREAD[i] = d.spread;
STICK[i] = d.stick; ALPHA[i] = d.alpha; LIQT[i] = d.liqT; BAGOK[i] = d.bag ? 1 : 0; PARTMAT[i] = d.partMat ? 1 : 0;
COLR[i] = d.col[0]; COLG[i] = d.col[1]; COLB[i] = d.col[2]; CVAR[i] = d.v;
RELAX[i] = d.ph === PH_LIQUID ? 0.0006 : d.ph === PH_POWDER ? 0.0005 : d.ph === PH_GAS ? 0.003 : 0.0004;
}
// what molds cast (molten metals, and molten glass) and what they set into
const CASTMETAL = new Uint8Array(NMAT); for (const m of [MCU, MFE, MST, MSN, MZN, MAG, MAU, MBZ, MBS, MGL]) CASTMETAL[m] = 1;
// tier as a drill bit or tank (0: too soft to be a bit)
const METAL_TIER = new Int8Array(NMAT).fill(-1); METAL_TIER[COPPER] = 1; METAL_TIER[IRON] = 2; METAL_TIER[STEEL] = 3;
METAL_TIER[TIN] = 0; METAL_TIER[GLASS] = 0; METAL_TIER[ZINC] = 0; METAL_TIER[SILVER] = 0; METAL_TIER[GOLD] = 0; METAL_TIER[BRONZE] = 1; METAL_TIER[BRASS] = 1;
const SOLIDMETAL = new Uint8Array(NMAT); for (const m of [COPPER, IRON, STEEL, TIN, ZINC, SILVER, GOLD, BRONZE, BRASS, GLASS]) SOLIDMETAL[m] = 1;
// ---------- Flags & parts ----------
const F_NAT = 1, F_CAST = 2, F_BURN = 4;
const P_NONE = 0, P_TU = 1, P_TD = 2, P_TL = 3, P_TR = 4, P_GRATE = 5, P_GOPEN = 6, P_WHEEL = 7, P_INTAKE = 8, P_FILTER = 9, P_PIPE = 10;
const TDX = [0, 0, 0, -1, 1], TDY = [0, -1, 1, 0, 0];
// ---------- Tool tiers ----------
// reach: how far from the bot the drill works. Harder rock takes longer, and
// every new bit cuts faster and further.
const BIT_TIERS = [
{ name: 'Stone bit', hard: 3, speed: 0.7, reach: 16 },
{ name: 'Copper bit', hard: 4, speed: 1.0, reach: 24 },
{ name: 'Iron bit', hard: 5, speed: 1.5, reach: 34 },
{ name: 'Steel bit', hard: 6, speed: 2.2, reach: 46 },
];
const TANK_TIERS = [
{ name: 'Canvas sack', cap: 1500 },
{ name: 'Copper tank', cap: 4000 },
{ name: 'Iron tank', cap: 10000 },
{ name: 'Steel tank', cap: 25000 },
];
const REACH = 64;
src/sim/molds.js
+1 -3
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@@ -309,9 +309,7 @@ function removeMold(mo) {
for (const i of walls) {
const m = mat[i];
if (PH[m] === PH_SOLID && !(flags[i] & F_NAT) && !PARTMAT[m]) {
if (BAR_OF[m] && PH[mo.wall] === PH_ITEM) { metal++; setCell(i, EMPTY, temp[i], 0); }
else if (YLD[m] && bagAdd(YLD[m], 1, false) === 0) { setCell(i, YLD[m], temp[i], 0); droppedLast++; }
else setCell(i, EMPTY, temp[i], 0);
metal += removeWallCell(i, mo.wall);
}
}
if (metal) giveOrDrop(BAR_OF[WALL_OF[mo.wall]] || BARCU, Math.floor(metal / GRAINS_PER_BAR), mo.x + 8, mo.y);
src/sim/world.js
+2 -1
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@@ -67,8 +67,9 @@ function depthU(y) {
}
// the y at a fraction u of the underground depth (the inverse of depthU)
function depthY(u) { return Math.round(surfBase + (!shallowD ? u * underD : u <= 0.3 ? u / 0.3 * shallowD : shallowD + (u - 0.3) / 0.7 * (underD - shallowD))); }
function meanSurface() { let s = 0; for (let x = 0; x < W; x++) s += surfY[x]; return s / W; }
function computeAmbient() {
let sm = 0; for (let x = 0; x < W; x++) sm += surfY[x]; sm /= W;
const sm = meanSurface();
for (let y = 0; y < H; y++) {
let a = 18;
if (y > sm) a += Math.min(60, (y - sm) * 0.04);
src/sim/worldgen-helpers.js
+61
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@@ -0,0 +1,61 @@
// World generation helpers: noise and removal of tiny hard rock specks.
// ---------- Perlin noise ----------
function makeNoise(rng) {
const perm = new Uint8Array(512), gx = new Float32Array(256), gy = new Float32Array(256);
const p = []; for (let i = 0; i < 256; i++) p.push(i);
for (let i = 255; i > 0; i--) { const j = Math.floor(rng() * (i + 1)); const t = p[i]; p[i] = p[j]; p[j] = t; }
for (let i = 0; i < 512; i++) perm[i] = p[i & 255];
for (let i = 0; i < 256; i++) { const a = rng() * Math.PI * 2; gx[i] = Math.cos(a); gy[i] = Math.sin(a); }
return function (x, y) {
const xi = Math.floor(x), yi = Math.floor(y), xf = x - xi, yf = y - yi;
const X = xi & 255, Y = yi & 255;
const p0 = perm[Y], p1 = perm[Y + 1];
const h00 = perm[X + p0], h10 = perm[X + 1 + p0], h01 = perm[X + p1], h11 = perm[X + 1 + p1];
const n00 = gx[h00] * xf + gy[h00] * yf, n10 = gx[h10] * (xf - 1) + gy[h10] * yf;
const n01 = gx[h01] * xf + gy[h01] * (yf - 1), n11 = gx[h11] * (xf - 1) + gy[h11] * (yf - 1);
const u = xf * xf * xf * (xf * (xf * 6 - 15) + 10), v = yf * yf * yf * (yf * (yf * 6 - 15) + 10);
return (n00 + u * (n10 - n00) + v * (n01 - n00) + u * v * (n00 - n10 - n01 + n11)) * 1.41;
};
}
function fbm(n, x, y, oct) { let s = 0, a = 1, f = 1, t = 0; for (let o = 0; o < oct; o++) { s += n(x * f, y * f) * a; t += a; a *= 0.5; f *= 2; } return s / t; }
// Small specks of rock harder than the rock around them (a few grains of iron ore in stone, a
// chip of granite, a sliver of basalt) are not worth having: a bit too weak to break them leaves
// them hanging in the way. Any such piece of SPECK_MIN grains or fewer becomes the softer rock
// around it. Bigger veins and pockets stay. live: the world is in play (an older save).
const SPECK_MIN = 30;
function clearHardSpecks(live) {
const seen = new Uint8Array(N), st = new Int32Array(N), cells = new Int32Array(SPECK_MIN + 1);
let n = 0;
for (const h0 of [6, 5, 4]) {
seen.fill(0);
const mem = (i) => { const m = mat[i]; return (flags[i] & F_NAT) !== 0 && PH[m] === PH_SOLID && HARD[m] >= h0 && HARD[m] <= 6 && YLD[m] !== 0 && !PARTMAT[m]; };
const soft = (i) => { const m = mat[i]; return (flags[i] & F_NAT) !== 0 && PH[m] === PH_SOLID && HARD[m] >= 1 && HARD[m] < h0 && YLD[m] !== 0 && !PARTMAT[m]; };
for (let i0 = 0; i0 < N; i0++) {
if (seen[i0] || !mem(i0)) continue;
let sp = 0, sz = 0, x0 = W, y0 = H, x1 = 0, y1 = 0;
const hosts = new Map();
st[sp++] = i0; seen[i0] = 1;
while (sp) {
const i = st[--sp], x = i % W, y = (i / W) | 0;
if (sz <= SPECK_MIN) cells[sz] = i;
sz++;
if (x < x0) x0 = x; if (x > x1) x1 = x; if (y < y0) y0 = y; if (y > y1) y1 = y;
for (const j of [x > 0 ? i - 1 : -1, x < W - 1 ? i + 1 : -1, i - W, i + W]) {
if (j < 0 || j >= N || seen[j]) continue;
if (mem(j)) { seen[j] = 1; st[sp++] = j; }
else if (soft(j)) hosts.set(mat[j], (hosts.get(mat[j]) || 0) + 1);
}
}
if (sz > SPECK_MIN) continue;
// a speck left floating (in a cave, or dug round) takes the rock nearest round it
if (!hosts.size) for (let y = Math.max(0, y0 - 5); y <= Math.min(H - 1, y1 + 5); y++) for (let x = Math.max(0, x0 - 5); x <= Math.min(W - 1, x1 + 5); x++) { const j = y * W + x; if (soft(j)) hosts.set(mat[j], (hosts.get(mat[j]) || 0) + 1); }
let host = 0, best = 0;
for (const [m, c] of hosts) if (c > best) { best = c; host = m; }
if (!host) continue;
for (let k = 0; k < sz; k++) { const i = cells[k]; if (live) setCell(i, host, temp[i], F_NAT); else mat[i] = host; }
n++;
}
}
return n;
}
src/sim/worldgen.js
+1 -61
View File
@@ -1,64 +1,4 @@
// World generation: noise, layers, ores, caves, water, trees, and clearing tiny hard specks.
// ---------- Perlin noise ----------
function makeNoise(rng) {
const perm = new Uint8Array(512), gx = new Float32Array(256), gy = new Float32Array(256);
const p = []; for (let i = 0; i < 256; i++) p.push(i);
for (let i = 255; i > 0; i--) { const j = Math.floor(rng() * (i + 1)); const t = p[i]; p[i] = p[j]; p[j] = t; }
for (let i = 0; i < 512; i++) perm[i] = p[i & 255];
for (let i = 0; i < 256; i++) { const a = rng() * Math.PI * 2; gx[i] = Math.cos(a); gy[i] = Math.sin(a); }
return function (x, y) {
const xi = Math.floor(x), yi = Math.floor(y), xf = x - xi, yf = y - yi;
const X = xi & 255, Y = yi & 255;
const p0 = perm[Y], p1 = perm[Y + 1];
const h00 = perm[X + p0], h10 = perm[X + 1 + p0], h01 = perm[X + p1], h11 = perm[X + 1 + p1];
const n00 = gx[h00] * xf + gy[h00] * yf, n10 = gx[h10] * (xf - 1) + gy[h10] * yf;
const n01 = gx[h01] * xf + gy[h01] * (yf - 1), n11 = gx[h11] * (xf - 1) + gy[h11] * (yf - 1);
const u = xf * xf * xf * (xf * (xf * 6 - 15) + 10), v = yf * yf * yf * (yf * (yf * 6 - 15) + 10);
return (n00 + u * (n10 - n00) + v * (n01 - n00) + u * v * (n00 - n10 - n01 + n11)) * 1.41;
};
}
function fbm(n, x, y, oct) { let s = 0, a = 1, f = 1, t = 0; for (let o = 0; o < oct; o++) { s += n(x * f, y * f) * a; t += a; a *= 0.5; f *= 2; } return s / t; }
// Small specks of rock harder than the rock around them (a few grains of iron ore in stone, a
// chip of granite, a sliver of basalt) are not worth having: a bit too weak to break them leaves
// them hanging in the way. Any such piece of SPECK_MIN grains or fewer becomes the softer rock
// around it. Bigger veins and pockets stay. live: the world is in play (an older save).
const SPECK_MIN = 30;
function clearHardSpecks(live) {
const seen = new Uint8Array(N), st = new Int32Array(N), cells = new Int32Array(SPECK_MIN + 1);
let n = 0;
for (const h0 of [6, 5, 4]) {
seen.fill(0);
const mem = (i) => { const m = mat[i]; return (flags[i] & F_NAT) !== 0 && PH[m] === PH_SOLID && HARD[m] >= h0 && HARD[m] <= 6 && YLD[m] !== 0 && !PARTMAT[m]; };
const soft = (i) => { const m = mat[i]; return (flags[i] & F_NAT) !== 0 && PH[m] === PH_SOLID && HARD[m] >= 1 && HARD[m] < h0 && YLD[m] !== 0 && !PARTMAT[m]; };
for (let i0 = 0; i0 < N; i0++) {
if (seen[i0] || !mem(i0)) continue;
let sp = 0, sz = 0, x0 = W, y0 = H, x1 = 0, y1 = 0;
const hosts = new Map();
st[sp++] = i0; seen[i0] = 1;
while (sp) {
const i = st[--sp], x = i % W, y = (i / W) | 0;
if (sz <= SPECK_MIN) cells[sz] = i;
sz++;
if (x < x0) x0 = x; if (x > x1) x1 = x; if (y < y0) y0 = y; if (y > y1) y1 = y;
for (const j of [x > 0 ? i - 1 : -1, x < W - 1 ? i + 1 : -1, i - W, i + W]) {
if (j < 0 || j >= N || seen[j]) continue;
if (mem(j)) { seen[j] = 1; st[sp++] = j; }
else if (soft(j)) hosts.set(mat[j], (hosts.get(mat[j]) || 0) + 1);
}
}
if (sz > SPECK_MIN) continue;
// a speck left floating (in a cave, or dug round) takes the rock nearest round it
if (!hosts.size) for (let y = Math.max(0, y0 - 5); y <= Math.min(H - 1, y1 + 5); y++) for (let x = Math.max(0, x0 - 5); x <= Math.min(W - 1, x1 + 5); x++) { const j = y * W + x; if (soft(j)) hosts.set(mat[j], (hosts.get(mat[j]) || 0) + 1); }
let host = 0, best = 0;
for (const [m, c] of hosts) if (c > best) { best = c; host = m; }
if (!host) continue;
for (let k = 0; k < sz; k++) { const i = cells[k]; if (live) setCell(i, host, temp[i], F_NAT); else mat[i] = host; }
n++;
}
}
return n;
}
// World generation: staged terrain, ore, caves and placement, with synchronous and async entry points.
// ---------- World generation ----------
function* worldSteps(seedIn, w, h) {
yield [0, 'Shaping the land'];