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Loose walls slump to a natural slope instead of eroding layer by layer (t93)

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Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
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44r0n7
2026-10-28 18:58:40 -04:00
co-authored by Claude Opus 5.5
parent dadf62a28d
commit 807217b22c
7 changed files with 146 additions and 3 deletions
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docs/PROJECT_MAP.md
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@@ -254,7 +254,7 @@ Exploration only: never changes grains or the random stream.
- functions: fogAlloc, fogMark, fogSeen, fogInit, fogLook, fogRevealAround, fogRevealAll
- variables: FOG, FOG_SENSE, FOG_SENSE_FADE, fog, FW, FH
### src/sim/cells.js (223 lines)
### src/sim/cells.js (240 lines)
Cell helpers (setCell, move, enter) and the falling-sand movement of powders, liquids and gases (simMove).
- functions: setCell, swapCells, swapCellData, move, enter, enterFree, powder, passable, liquid, liquidSearch, gas, wakeBotPowder, simMove, moveChunk
- variables: SORTP, SORTP_FUEL, LSTEP, LFILM, CORNER_SEAL
@@ -656,6 +656,7 @@ The frame loop and boot.
- `test/t_nozzle.js`: Blowing aims within the nozzle's reach, with room for the brush and settling.
- `test/t_perf.js`: Profiling fixtures start in the same state after previous scenes and warm-up ticks.
- `test/t_physics.js`: Sand and other powders, molten metal and gases: heaps, sorting, sinking, setting, rising and fading. Water has its own suite (t_water.js). Tall worlds keep geothermal heat out of the way.
- `test/t_pile_collapse.js`: Tall loose faces release together; supported heaps stop moving, including when revisited.
- `test/t_pipes.js`: Pipes, pumps and outlets move liquids; the Grinder grinds waste rock for trace ore.
- `test/t_racks.js`: Rack intake, FIFO storage, gate, removal and saved-state validation.
- `test/t_render_dirty.js`: Render invalidation must not depend on whether a grain moved or the chunk stayed awake.
@@ -709,3 +710,4 @@ The frame loop and boot.
- `tools/scenes/t40-sloped-belt.js`: Self-contained: a flat feed climbs, crosses the top, and runs downhill; a filter sorts below.
- `tools/scenes/t88-light.js`: Frozen light comparisons, also used by the WebGPU browser regression suite.
- `tools/scenes/t88-renderer.js`: Paused comparison scene: ordinary grains, fog, heat, trees and exceptional geometry.
- `tools/scenes/t93-pile-collapse.js`: Left to right: 40x20 walls of sand, mixed rubble, and rubble with 20% clay. Capture at --ticks 0 and --ticks 180, --zoom 3 --no-light --freeze.