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Fog of war: underground is black until the bot has seen it (t8)

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Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
44r0n7
2026-10-24 01:37:34 -04:00
co-authored by Claude Opus 5.5
parent a730a7d73c
commit 152a2af6df
20 changed files with 222 additions and 22 deletions
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src/render/world.js
+22 -2
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@@ -1,3 +1,5 @@
// Scale colour without changing the smooth-look class.
function fogColor(c, k) { return (c & 0xff000000) | (((c >>> 16 & 255) * k) << 16) | (((c >>> 8 & 255) * k) << 8) | ((c & 255) * k); }
// drawWorld: the per-grain pixel buffer (pixel look), also the input of the smooth look.
// ---------- World pixels ----------
// smooth-look class of a screw tube cell by direction: 9 up, 10 right, 11 down, 12 left
@@ -20,6 +22,7 @@ function drawWorld() {
for (const i of moldCellsAt(mo.kind, mo.x, mo.y).walls) { const sx = (i % W) - vx0, sy = ((i / W) | 0) - vy0; if (sx >= 0 && sy >= 0 && sx < bw && sy < bh) mmask[sy * bw + sx] = 1; }
}
}
const useFog = SET.fog;
const OUT = sm ? 0x040a0a0c : 0xff0a0a0c;
const lighting = SET.lighting !== 'off' && !R.lens;
if (lighting && (R.frame % SET.lightEvery === 0 || !R.lw)) computeLight();
@@ -33,12 +36,20 @@ function drawWorld() {
const y = vy0 + by;
const row = by * bw;
if (y < 0 || y >= H) { for (let bx = 0; bx < bw; bx++) { px[row + bx] = OUT; if (sm) { bpx[row + bx] = 0x000a0a0c; tpx[row + bx] = 0; fpx[row + bx] = 0xff; } } continue; }
const fy = y / FOG, fj = Math.floor(fy), ft = fy - fj, fr = fj * FW, fn = Math.min(FH - 1, fj + 1) * FW;
const yw = y * W;
let skr = SKY_R[y], skg = SKY_G[y], skb = SKY_B[y];
if (rk > 0.01) { const gy = (skr + skg + skb) / 3 * 0.82; skr += (gy - skr) * rk * 0.7; skg += (gy - skg) * rk * 0.7; skb += (gy - skb) * rk * 0.65; }
for (let bx = 0; bx < bw; bx++) {
const x = vx0 + bx;
if (x < 0 || x >= W) { px[row + bx] = OUT; if (sm) { bpx[row + bx] = 0x000a0a0c; tpx[row + bx] = 0; fpx[row + bx] = 0xff; } continue; }
let fv = 255;
if (useFog) {
const fx = x / FOG, j = Math.floor(fx), t = fx - j, j1 = Math.min(FW - 1, j + 1);
const a = fog[fr + j], b = fog[fr + j1], c = fog[fn + j], d = fog[fn + j1];
if ((a & b & c & d) !== 255) fv = (a + (b - a) * t) * (1 - ft) + (c + (d - c) * t) * ft;
if (!fv) { px[row + bx] = OUT; if (sm) { bpx[row + bx] = 0x000a0a0c; tpx[row + bx] = 0; fpx[row + bx] = 0xff; } continue; }
}
const i = yw + x, m = mat[i], nz = noiseB[i] - 128;
const T = temp[i];
let r, g, b;
@@ -48,6 +59,7 @@ function drawWorld() {
else { const v = (COLR[m] + COLG[m] + COLB[m]) / 3 * 0.25; r = tl[ti] * 0.78 + v; g = tl[ti + 1] * 0.78 + v; b = tl[ti + 2] * 0.78 + v; }
const p = part[i];
if (p && ((x + y) & 1)) { r = r * 0.7 + 40; g = g * 0.7 + 40; b = b * 0.7 + 40; }
if (fv < 255) { r *= fv / 255; g *= fv / 255; b *= fv / 255; }
px[row + bx] = 0xff000000 | ((b > 255 ? 255 : b) << 16) | ((g > 255 ? 255 : g) << 8) | (r > 255 ? 255 : r);
continue;
}
@@ -167,7 +179,7 @@ function drawWorld() {
if (T > 450 && m !== EMPTY && incand) {
const gi = glowIndex(PH[m] === PH_SOLID ? T + nz * 0.9 : m === MAGMA ? T + Math.sin(x * 0.19 + y * 0.11 + anim * 0.03 + nz * 0.04) * 55 - 30 : T), w = GLOW_W[gi];
r = r * (1 - w) + GLOW_R[gi] * w; g = g * (1 - w) + GLOW_G[gi] * w; b = b * (1 - w) + GLOW_B[gi] * w;
if (glowOn && w > 0.3 && ((bx | by) & 1) === 0) {
if (glowOn && fv >= 128 && w > 0.3 && ((bx | by) & 1) === 0) {
const gk = (by >> 1) * gw + (bx >> 1), s = (w - 0.3) * 1.4;
gpx[gk] = 0xff000000 | (Math.min(255, GLOW_B[gi] * s) << 16) | (Math.min(255, GLOW_G[gi] * s) << 8) | Math.min(255, GLOW_R[gi] * s);
}
@@ -198,11 +210,19 @@ function drawWorld() {
top = cl << 24;
fpx[row + bx] = (tb ? 0xff000000 : 0) | (cl === 5 ? 0xff0000 : 0) | (cl === 3 ? 0xff00 : 0) | (cl === 1 || cl === 4 || cl === 6 ? 0xff : 0);
}
if (fv < 255) {
const k = fv / 255; r *= k; g *= k; b *= k;
if (sm) {
const c = bpx[row + bx], t = tpx[row + bx];
bpx[row + bx] = fogColor(c, k); tpx[row + bx] = fogColor(t, k);
}
}
px[row + bx] = top | ((b > 255 ? 255 : b) << 16) | ((g > 255 ? 255 : g) << 8) | (r > 255 ? 255 : r);
}
}
// bars and other loose objects
if (!lens) for (const e of ents) {
if (useFog && fogSeen(e.ix, e.iy) < 64) continue;
const ex = e.ix - vx0, ey = e.iy - vy0;
if (ex + BAR_W < 0 || ey + BAR_H < 0 || ex >= bw || ey >= bh) continue;
const m = e.m;
@@ -219,7 +239,7 @@ function drawWorld() {
}
// grains in flight from the vacuum nozzle, a tube or a belt (rain and snow are drawn over the top, see drawRain)
if (!lens) for (const f of flyers) {
if (f.rain) continue;
if (f.rain || (useFog && fogSeen(f.x, f.y) < 64)) continue;
const sx = Math.floor(f.x) - vx0, sy = Math.floor(f.y) - vy0;
if (sx < 0 || sy < 0 || sx >= bw || sy >= bh) continue;
const m = f.m, v = ((sx * 7 + sy * 13) & 15) - 8;