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Uphill runs share one cleat phase; no cleats downhill; pick slope bands

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A piece added to a running sloped belt kept its own cleat phase, so at
the seam a rib could start just behind another and push its pocket into
it, stalling the whole run with only a few grains. Every block of a run
now takes the phase of the run's lower-left block.

Downhill sloped belts no longer have cleats: they carry like a flat belt
(90 grains/s, was 38) and draw only the sidewall.

Middle click on a sloped belt's band, where it is drawn into the empty
block beside it, now picks the belt.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
44r0n7
2026-10-26 22:31:01 -04:00
co-authored by Claude Opus 5.5
parent 8cdc47fd33
commit 2e5ad0f1a1
9 changed files with 98 additions and 41 deletions
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docs/PROJECT_MAP.md
+7 -7
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@@ -171,7 +171,7 @@ dist/, shots/ build output and screenshots (not committed)
| Starter furnace designs | `src/sim/progress.js` (`STARTER_DESIGNS`, `smelterBlueprint`) |
| Falling sand, liquids, gases | `src/sim/cells.js` |
| Heat, melting, fire, reactions, alloys, steel | `src/sim/heat.js` |
| Belts, filters, screw conveyors | `src/sim/conveyors.js`, `src/sim/slope-conveyors.js` (cleat barriers, pocket depth and screen nudges), `src/sim/machine-tick.js` |
| Belts, filters, screw conveyors | `src/sim/conveyors.js`, `src/sim/slope-conveyors.js` (uphill cleat barriers and screen nudges), `src/sim/machine-tick.js` |
| Fans | `src/sim/machine-tick.js` (`fanBlow`) |
| Refiner, Stone cutter, Silo | `src/sim/processors.js` |
| Pipes, pumps, outlets | `src/sim/pipes.js` |
@@ -264,14 +264,14 @@ Pipes, pumps and outlets: each joined line holds one liquid as a count, not as g
Per-tick machine work: steam engines, fans, belts, filters, screw conveyors (machinesTick).
- functions: engineIntake, fanBlow, machinesTick
### src/sim/conveyors.js (193 lines)
### src/sim/conveyors.js (194 lines)
How belts, filters and screw conveyors move what is on or in them. What rests on a belt or filter rides along: the whole stack standing on the carrying surface steps one cell toward d together (belts run front of the line first, so the way ahead is clear). If a powder grain is blocked, the load above it stands still and the belt slips underneath. A filter's own material drops through it instead, unless it is already full.
- functions: conveyorStep, carryColumn, beltDrain, launchGrain, rebuildFilters, filterCarry, carryBeltsAndFilters, setFilter, filterRun, roomFor, screwSpread, screwIntake, diagonalScrewNext
- variables: CARRY_DEPTH, filterR, filterL, filtersDirty
### src/sim/slope-conveyors.js (220 lines)
Cleats are rubber ribs standing up from a sloped belt's face, one every CLEAT_SPACING face cells. Loose grains treat them as solid (cleatMask). Nothing grips the bare face: grains slide down it until a cleat stops them. Each belt step moves every cleat one face cell along the belt, and the rib pushes whatever is in its way ahead of it, so the pocket in front rides along while anything heaped above the rib is left to roll back. If a rib can't push its way, its whole run stalls.
- functions: ribMove, cleatFoot, ribCells, slopeFaceAt, pushRow, scoop, pocketRoom, advanceCleat, slopeRunKey, slopeCleatsTick, rebuildCleatMask, expelFromRib, screenNudge, wakeCleatLoad
### src/sim/slope-conveyors.js (230 lines)
Cleats are rubber ribs standing up from a sloped belt's face, one every CLEAT_SPACING face cells. Loose grains treat them as solid (cleatMask). Nothing grips the bare face: grains slide down it until a cleat stops them. Each belt step moves every cleat one face cell along the belt, and the rib pushes whatever is in its way ahead of it, so the pocket in front rides along while anything heaped above the rib is left to roll back. If a rib can't push its way, its whole run stalls. Only uphill runs have cleats: downhill, the belt carries its load like a flat one.
- functions: ribMove, cleatFoot, ribCells, slopeUphill, slopeFaceAt, pushRow, scoop, pocketRoom, advanceCleat, slopeRunKey, slopeCleatsTick, rebuildCleatMask, expelFromRib, screenNudge, wakeCleatLoad
- variables: CLEAT_SPACING, CLEAT_HEIGHT, CLEAT_REACH, SCREEN_NUDGE_TICKS, cleatChunks, cleatMask, cleatCells, slopePhase, ribLog
### src/sim/blocks.js (219 lines)
@@ -384,7 +384,7 @@ Smooth look: WebGL setup, texture uploads, drawing and adaptive resolution.
- functions: smCompile, smoothAvailable, smUpload, smoothDraw, smoothPace
- variables: SM, smBytes
### src/render/slope-belt-shader.js (109 lines)
### src/render/slope-belt-shader.js (111 lines)
Smooth slope shading, kept beside the shared CPU geometry in slope-belts.js.
- variables: SM_SLOPE_HELPERS, SM_SLOPE_DRAW
@@ -471,7 +471,7 @@ Keyboard and mouse listeners.
- functions: isTyping
- variables: canvas
### src/ui/actions.js (242 lines)
### src/ui/actions.js (244 lines)
What input does: overlays, F, pick, copy / cut / paste, undo, building and tool use each frame. Which overlays are on, shown as a coloured frame round the screen and a named badge
- functions: updateOverlayUI, toggleLens, doInteract, pickUnderCursor, aimBlock, stampOrigin, selModeHeld, startPaste, stopSelectAndPaste, plural, piecesIn, doUndo, endRmbRecord, dragDirFor, blockLabel, primaryPress, primaryRelease, secondaryPress, toolTick
- variables: ovShown