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Shared join module for transport pieces; belt drawing uses it (t67 phase 1)

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Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
44r0n7
2026-10-27 13:00:43 -04:00
co-authored by Claude Opus 5.5
parent 787721ad35
commit 65338b2b27
11 changed files with 274 additions and 38 deletions
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src/render/world.js
+3 -2
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@@ -201,7 +201,7 @@ function drawWorld() {
} else if (ly === 3) { // the belt's return run carries on under it, so belts and filters read as one belt
const st = ((x - dir * (anim >> 1)) >> 1) & 1;
if (m === EMPTY || st) { r = (st ? 92 : 56) * 0.72; g = (st ? 96 : 58) * 0.72; b = (st ? 104 : 66) * 0.72; }
} else if ((lx === 0 && !beltLike(fb - 1)) || (lx === 3 && !beltLike(fb + 1))) { if (m === EMPTY || ((x + y) & 1)) { r = 64; g = 66; b = 74; } } // frame only where the line ends
} else if ((lx === 0 && !beltLike(fb, 0)) || (lx === 3 && !beltLike(fb, 1))) { if (m === EMPTY || ((x + y) & 1)) { r = 64; g = 66; b = 74; } } // frame only where the line ends
else if (m === EMPTY) { // mesh holes, tinted with what falls through them
if ((x + y) & 1) { r = 40; g = 42; b = 48; }
else if (inv) { r = 58; g = 74; b = 72; } // carry mode: everything else drops
@@ -341,6 +341,7 @@ function drawWorld() {
else if (isWall(code) && WALL_OF[v]) { const wm = WALL_OF[v]; tr = (COLR[wm] + 90) / 2; tg = (COLG[wm] + 190) / 2; tb = (COLB[wm] + 230) / 2; }
const slope = isSlopeBelt(code), diagonal = code === BP_SCREW && v >= 4;
const joins = slope ? slopeBeltConnections(gbx, gby, code, ghostBlocks) : diagonal ? diagonalScrewJoins(gbx, gby, v, ghostBlocks) : 0;
const caps = code === BP_BELT || code === BP_FILTER ? flatBeltCaps(b, ghostBlocks) : 3;
for (let dy = slope ? -9 : diagonal ? -4 : 0; dy < (slope || diagonal ? 8 : BS); dy++) for (let dx = slope ? -5 : diagonal ? -4 : 0; dx < (slope ? 9 : diagonal ? 8 : BS); dx++) {
let sd = 0;
if (diagonal) {
@@ -365,7 +366,7 @@ function drawWorld() {
const sx = gbx * BS + dx - vx0, sy = gby * BS + dy - vy0;
if (sx < 0 || sy < 0 || sx >= bw || sy >= bh) continue;
const k = sy * bw + sx, c = px[k];
const edge = slope || diagonal ? sd > -0.8 : dx === 0 || dy === 0 || dx === BS - 1 || dy === BS - 1;
const edge = slope || diagonal ? sd > -0.8 : (dx === 0 && (caps & 1)) || dy === 0 || (dx === BS - 1 && (caps & 2)) || dy === BS - 1;
const a = edge ? (((dx + dy + pulse) & 3) === 0 ? 0.85 : 0.6) : 0.28;
const pr = c & 255, pg = (c >> 8) & 255, pb = (c >> 16) & 255;
px[k] = (sm ? 0x04000000 : 0xff000000) | ((pb + (tb - pb) * a) << 16) | ((pg + (tg - pg) * a) << 8) | (pr + (tr - pr) * a);