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Belts: a backed-up heap stands still instead of the top sliding over the bottom

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carryColumn stops at the first blocked grain on a belt, so a heap whose front
is backed up (a screw tube taking less than the belt brings, or a wall) no
longer shears. New t_conveyors checks and a belt-heap screenshot scene.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
44r0n7
2026-10-23 19:07:28 -04:00
co-authored by Claude Opus 5.5
parent f540c5454f
commit 3e313e20eb
7 changed files with 80 additions and 11 deletions
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NOTES.md
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@@ -7,8 +7,6 @@ and stay there until the owner has checked them in the game and deleted them.
## To do
- stacking ingots is a little odd, they dont stack neatly. so putting them all in the same place means it will get full but have lots of air space. what can we do about this? WHat in real life might be the solution for storing ingots?
- i have noticed that belts with a big pile on top only move the grains on the top of the stack. the belt should move the whole stack. if this is an issue for performance, maybe a nice solution is to stall the belt when there is too much on it. then the player must build in a way to control the flow to that belt. update: i found that its because when there is a screw tube at the end of the belt, it stops the lower grains and only the ones at the top move. the screw tube shouldnt block them, it should suck them in.
- (agent) Written after version 24, which already tried to fix this: carryColumn in src/sim/conveyors.js moves the whole stack, up to 96 grains deep. A one-off headless check of a tall heap moving together passed then (it was not kept as a suite test), so the real game must differ from that check somehow. Reproduce it in the game first (tools/shot.py, or play it), then add a suite test that fails, then fix.
- instead of full description on to left for build menu, mouse hover reviels a new info popup. organize the popup look so its nice and easy to read the information.
- dont need the short description in the build menu if we have a hover info popup.
- lets think about how best to design the factory products. basics are normal smelting ore, refining, etc. but the actual export products could be like real construction materials. materials that a real construction site might need.
@@ -27,6 +25,9 @@ and stay there until the owner has checked them in the game and deleted them.
## Done, please check
- i have noticed that belts with a big pile on top only move the grains on the top of the stack. the belt should move the whole stack. if this is an issue for performance, maybe a nice solution is to stall the belt when there is too much on it. then the player must build in a way to control the flow to that belt. update: i found that its because when there is a screw tube at the end of the belt, it stops the lower grains and only the ones at the top move. the screw tube shouldnt block them, it should suck them in.
- (agent) Written after version 24, which already tried to fix this: carryColumn in src/sim/conveyors.js moves the whole stack, up to 96 grains deep. A one-off headless check of a tall heap moving together passed then (it was not kept as a suite test), so the real game must differ from that check somehow. Reproduce it in the game first (tools/shot.py, or play it), then add a suite test that fails, then fix.
- (agent) Found it: when the front of the line backs up (your tube taking less than the belt brings, or a wall), the bottom grains were blocked but the ones above them still had air ahead, so the top slid forward over a stuck bottom forever. Now a column on a belt moves as a unit: if a grain can't move, nothing above it moves either, so a backed-up heap stands still (the belt slips under it) and is fed into the tube from its front, bottom layers included. A free-running belt still carries the whole heap. To check: blow a heap of two materials onto a belt that ends in an up tube and watch the bottom material go into the tube too. tools/scenes/belt-heap.js sets up the same thing for screenshots.
- copper bars go into the furnace. also they shouldnt require the player to press F to collect. instead it should automatically eject ingots below and the player can have a belt there.
- (agent) Bars now drop out of the bottom of an ingot mold by themselves as soon as they set, never up into the furnace. Leave one open block under the mold and put a belt below that: the bars land on it and ride off (a belt touching the mold's underside counts as blocked). If there is no room, the bars wait in the mold and a message says so once. The bit of metal too short for a bar stays in the trough for the next firing. F on the mold is now optional upkeep: it empties the trough, chips off slag and rakes the furnace grate. To check: run a furnace over a mold with a belt a block below.