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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/ui/previews.js
+4 -3
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@@ -110,7 +110,7 @@ function drawPreviews() {
if (dd !== GAME.dragDir) { GAME.dragDir = dd; hudDirty = true; }
const dIdx = dd >= 0 ? dd : (GAME.pieceDir[P.id] || 0);
const afford = canAfford(pieceCostNow(P), cells.length);
const planned = (code === BP_SCREW && dIdx >= 4) || isSlopeBelt(code) ? new Map(cells.map(([x, y]) => [y * BW + x, [code, dIdx]])) : null;
const planned = code === BP_SCREW || isSlopeBelt(code) ? new Map(cells.map(([x, y]) => [y * BW + x, [code, dIdx]])) : null;
for (const [bx, by] of cells) {
const err = canPlaceBlock(bx, by, code), rb = by * BW + bx;
const swap = GAME.replace && !!blockP[rb] && /already built/.test(err) && !blockIs(rb, code, v, pieceExtra(P));
@@ -180,12 +180,13 @@ function drawPreviews() {
function previewBlock(code, x, y, w, h, stroke = false, direction = -1, bx = -1, by = -1, planned = null) {
const ctx = R.ctx;
if (code === BP_SCREW && direction >= 4) {
const joins = bx >= 0 ? diagonalScrewJoins(bx, by, direction, planned) : 0;
if (code === BP_SCREW && (direction >= 4 || (bx >= 0 && straightScrewJoins(bx, by, direction, planned)))) {
const joins = bx >= 0 ? (direction >= 4 ? diagonalScrewJoins(bx, by, direction, planned) : straightScrewJoins(bx, by, direction, planned)) : 0;
const scale = w / BS, step = SET.look === "smooth" ? 0.25 : 1;
const b = bx >= 0 ? by * BW + bx : 0, ox = (b % BW) * BS, oy = ((b / BW) | 0) * BS;
ctx.beginPath();
for (let yy = -4; yy < 8; yy += step) for (let xx = -4; xx < 8; xx += step) {
if (direction < 4 && ((direction & 1) ? xx < 0 || xx >= BS : yy < 0 || yy >= BS)) continue;
const sd = diagonalScrewShape(ox + xx + step / 2, oy + yy + step / 2, b, direction, joins);
if (sd <= 0 && (!stroke || sd > -step * 1.5)) ctx.rect(x + xx * scale, y + yy * scale, step * scale, step * scale);
}