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Screw conveyors join by the shared rule: low ends and verticals join in the corner block (t67 phase 2)

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Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
44r0n7
2026-10-27 13:30:44 -04:00
co-authored by Claude Opus 5.5
parent 198bea54da
commit fd35bf334f
14 changed files with 358 additions and 209 deletions
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src/sim/conveyors.js
+38 -13
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@@ -176,23 +176,48 @@ function screwIntake(i, p, dx, dy) {
}
}
// Four lanes cross a block in four beats; the casing carries every lane across the corner.
// Prefer the next diagonal block, then either straight join, then the open head.
// Powder may enter any screw except one pushing exactly against it.
function screwAccepts(p, dx, dy) {
return SCREW_DX[p] !== -dx || SCREW_DY[p] !== -dy;
}
// Straight mouths retain side-feeding into lifts; only diagonal transfers need a join.
function straightScrewNext(i, p) {
const dx = SCREW_DX[p], dy = SCREW_DY[p], x = i % W, y = (i / W) | 0;
const xx = x + dx, yy = y + dy, next = yy * W + xx;
if ((xx >> 2) === (x >> 2) && (yy >> 2) === (y >> 2)) return next;
const end = dx + dy > 0 ? 1 : 0;
const q = part[next], nb = (yy >> 2) * BW + (xx >> 2);
if (blockP[nb] && !(SCREW_DX[q] && SCREW_DY[q])) return next;
const join = endJoin(x >> 2, y >> 2, end);
if (join >= 0) {
const target = join >> 1, v = blockV[target];
if (blockP[target] === BP_SCREW && v >= 4) {
if (target === nb) return next;
if (!blockP[nb]) {
const lane = dx ? y & 3 : x & 3;
const tx = target % BW * BS + (join & 1 ? BS - 1 : 0);
return (((target / BW) | 0) * BS + lane) * W + tx;
}
}
}
return SCREW_DX[q] && SCREW_DY[q] ? -1 : next;
}
// Four lanes cross a block in four beats; only a mutual geometric join can receive them.
function diagonalScrewNext(i, p) {
const x = i % W, y = (i / W) | 0, dx = SCREW_DX[p], dy = SCREW_DY[p];
const xx = x + dx, bx = x & ~3, by = y & ~3;
const xx = x + dx;
if (xx < 0 || xx >= W) return -1;
if ((xx >> 2) === (x >> 2)) return i + dx;
const yy = y + dy * BS;
if (yy >= 0 && yy < H) {
const q = part[yy * W + xx];
if (q >= P_SCREW_UR && q <= P_SCREW_UL && SCREW_DX[q] === dx && SCREW_DY[q] === dy) return yy * W + xx;
const yy = y + dy * BS, join = endJoin(x >> 2, y >> 2, dx > 0 ? 1 : 0);
if (join >= 0) {
const nb = join >> 1, nx = nb % BW * BS, ny = ((nb / BW) | 0) * BS;
if (blockP[nb] === BP_BELT || blockP[nb] === BP_FILTER) return (ny - 1) * W + xx;
if (blockP[nb] === BP_SCREW) {
const v = blockV[nb];
if (v >= 4) return yy * W + xx;
if (v & 1) return (ny + (y & 3)) * W + xx;
return (ny + (dy > 0 ? 0 : 3)) * W + nx + (y & 3);
}
}
if (IS_SCREW[part[y * W + xx]]) return y * W + xx;
if (dy > 0 && yy < H && (mat[yy * W + xx] === BELTL || mat[yy * W + xx] === BELTR)) return ((yy & ~3) - 1) * W + xx;
const hy = by + (dy > 0 ? BS : -1), hx = bx + (y & 3);
if (hy >= 0 && hy < H && IS_SCREW[part[hy * W + hx]]) return hy * W + hx;
// An open mouth discharges along the diagonal, clear of the last block.
// A corner screw is a separate end, not an open discharge cell.
return yy >= 0 && yy < H && !IS_SCREW[part[yy * W + xx]] ? yy * W + xx : -1;
}