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Downhill sloped belts draw as plain belts, ghosts and previews too

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Downhill runs have no cleats, so they no longer draw the sidewall or
ribs either: placed, as ghosts, or in the drag preview, which now knows
the belt's direction. Uphill runs keep the wall and ribs.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
44r0n7
2026-10-26 22:46:34 -04:00
co-authored by Claude Opus 5.5
parent 2e5ad0f1a1
commit be93ad1251
9 changed files with 32 additions and 15 deletions
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src/ui/preview-selection.js
+1 -1
View File
@@ -73,7 +73,7 @@ function drawPastePreview() {
ctx.strokeStyle = 'rgba(92,186,166,0.85)'; ctx.setLineDash([zp, zp]); ctx.lineWidth = Math.max(1, zp * 0.3);
ctx.strokeRect(x, y, w, h); ctx.setLineDash([]);
const planned = new Map(bp.blocks.map(([dx, dy, code, v]) => [(oy + dy) * BW + ox + dx, [code, v]]));
for (const [dx, dy, code, v] of bp.blocks) { const [bx2, by2, bw2, bh2] = blockRectPx(ox + dx, oy + dy, 1, 1); ctx.fillStyle = `rgba(${previewColor(code, v)},0.5)`; previewBlock(code, bx2, by2, bw2, bh2, false, code === BP_SCREW ? v : -1, ox + dx, oy + dy, planned); }
for (const [dx, dy, code, v] of bp.blocks) { const [bx2, by2, bw2, bh2] = blockRectPx(ox + dx, oy + dy, 1, 1); ctx.fillStyle = `rgba(${previewColor(code, v)},0.5)`; previewBlock(code, bx2, by2, bw2, bh2, false, code === BP_SCREW || isBelt(code) ? v : -1, ox + dx, oy + dy, planned); }
for (const [type, dx, dy] of bp.machines) { const P = PIECE_BY_ID[type]; const [mx, my, mw, mh] = blockRectPx(ox + dx, oy + dy, P.bw, P.bh); ctx.strokeStyle = 'rgba(255,210,122,0.8)'; ctx.strokeRect(mx, my, mw, mh); }
for (const [k, dx, dy] of bp.molds) { const md = MOLDS[k]; const [mx, my, mw, mh] = blockRectPx(ox + dx, oy + dy, md.bw, md.bh); ctx.strokeStyle = 'rgba(255,190,90,0.8)'; ctx.strokeRect(mx, my, mw, mh); }
ctx.restore();
src/ui/previews.js
+3 -3
View File
@@ -118,10 +118,10 @@ function drawPreviews() {
const ok = (!err || swap) && !ghost && afford;
const [x, y, w, h] = blockRectPx(bx, by, 1, 1);
ctx.fillStyle = ghost ? 'rgba(90,190,230,0.22)' : ok ? (swap ? 'rgba(255,190,90,0.5)' : `rgba(${col},0.55)`) : 'rgba(239,106,85,0.35)';
previewBlock(code, x, y, w, h, false, P.id === 'screw' ? dIdx : -1, bx, by, planned);
previewBlock(code, x, y, w, h, false, P.id === 'screw' || P.id === 'belt' ? dIdx : -1, bx, by, planned);
ctx.strokeStyle = ghost ? 'rgba(90,190,230,0.8)' : ok ? 'rgba(236,226,210,0.8)' : 'rgba(239,106,85,0.9)'; ctx.lineWidth = Math.max(1, zp * 0.25);
if (ghost) ctx.setLineDash([zp, zp * 0.7]);
previewBlock(code, x, y, w, h, true, P.id === 'screw' ? dIdx : -1, bx, by, planned); ctx.setLineDash([]);
previewBlock(code, x, y, w, h, true, P.id === 'screw' || P.id === 'belt' ? dIdx : -1, bx, by, planned); ctx.setLineDash([]);
if (P.dirs && (P.id === 'belt' || P.id === 'screw' || P.filter || P.id === 'pump' || P.id === 'outlet')) {
// a chevron on every block, pointing the way it will carry (or pump, or pour)
const [dx, dy] = isSlopeBelt(code) ? [dIdx ? 1 : -1, beltGrade(code) * (dIdx ? 1 : -1)] : P.id === 'screw' ? SCREW_DIRS[dIdx] : P.id === 'pump' ? PUMP_V[dIdx] : P.id === 'outlet' ? OUTLET_V[dIdx] : [[-1, 0], [1, 0]][dIdx];
@@ -222,7 +222,7 @@ function previewBlock(code, x, y, w, h, stroke = false, direction = -1, bx = -1,
if (stroke) { const fill = ctx.fillStyle; ctx.fillStyle = ctx.strokeStyle; ctx.fill(); ctx.fillStyle = fill; }
else ctx.fill();
// Use the same filled wall profile as placed slopes; ribs stay on the physics feet.
if (!isFilter(code)) {
if (!isFilter(code) && (direction < 0 || slopeUphill(code, direction))) { // downhill: a plain belt
ctx.beginPath();
for (let yy = -9; yy < 8; yy += step) for (let xx = -5; xx < 9; xx += step)
if (slopeWallShape(ox + xx + step / 2, oy + yy + step / 2, b, code) <= 0)