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Falling grains cast no shadow (t37)

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Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
44r0n7
2026-10-25 20:11:57 -04:00
co-authored by Claude Opus 5.5
parent f744d786f1
commit 7d1be16094
4 changed files with 30 additions and 13 deletions
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src/render/light.js
+5 -4
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@@ -5,11 +5,12 @@
function builtForLight(i, x, y) {
return (PH[mat[i]] === PH_SOLID && !(flags[i] & F_NAT)) || blockP[(y >> 2) * BW + (x >> 2)] || mach[i] || part[i];
}
function onBeltForLight(i) {
function looseForLight(i) {
for (let depth = 0; depth <= 12 && i < N; depth++, i += W) {
const m = mat[i], ph = PH[m];
if (m === BELTL || m === BELTR || part[i] === P_FILTER) return true;
if (ph !== PH_POWDER && ph !== PH_LIQUID) return false;
if (part[i]) return false;
if (ph !== PH_POWDER && ph !== PH_LIQUID) return m === EMPTY || ph === PH_GAS;
}
return false;
}
@@ -40,7 +41,7 @@ function computeLight() {
let y = roofY[x];
for (; y < roofEnd; y++) {
const i = y * W + x, ph = PH[mat[i]];
if ((ph === PH_SOLID || ph === PH_POWDER || ph === PH_LIQUID) && !builtForLight(i, x, y) && !((ph === PH_POWDER || ph === PH_LIQUID) && onBeltForLight(i))) break;
if ((ph === PH_SOLID || ph === PH_POWDER || ph === PH_LIQUID) && !builtForLight(i, x, y) && !((ph === PH_POWDER || ph === PH_LIQUID) && looseForLight(i))) break;
}
lightRoof[lx] = y;
}
@@ -50,7 +51,7 @@ function computeLight() {
const wx = (lx0 + lx) * res, k = ly * lw + lx;
if (wx < 0 || wy < 0 || wx >= W || wy >= H) { la[k] = 0; lr[k] = lg[k] = lb[k] = 0; continue; }
const i = wy * W + wx, m = mat[i], ph = PH[m];
la[k] = builtForLight(i, wx, wy) || ((ph === PH_POWDER || ph === PH_LIQUID) && onBeltForLight(i)) ? aAir : ph === PH_EMPTY ? (bgm[i] ? aGas : aAir) : ph === PH_GAS ? aGas : ph === PH_LIQUID ? aLiq : m === GLASS || m === ICE ? aGas : aSol;
la[k] = builtForLight(i, wx, wy) || ((ph === PH_POWDER || ph === PH_LIQUID) && looseForLight(i)) ? aAir : ph === PH_EMPTY ? (bgm[i] ? aGas : aAir) : ph === PH_GAS ? aGas : ph === PH_LIQUID ? aLiq : m === GLASS || m === ICE ? aGas : aSol;
let r = 0, g = 0, b = 0;
if (wy < lightRoof[lx]) { r = skyK; g = skyK * 0.98; b = skyK * 0.94; }
else if (wy < surfY[wx] && ph !== PH_SOLID) { const v = skyK * 0.9; r = v; g = v * 0.98; b = v * 0.95; }