platformer: level-length audit + expand Cavern Depths (L6) to three acts#60
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Per the level-length audit: the thinnest level (Cavern Depths, 2,976px / 9 coins / 3 foes) grows to ~6,400px and 24 coins with a rich cave bestiary, keeping all of Act 1 verbatim and appending two acts of proven geometry. ACT 2 - the CRUSHER GALLERY: two bats roosting on a dirt overhang (split bands so the flyers never share a path - gotcha 18), two faced dirt crushers to dash between, a wider spike chasm (PIT2). ACT 3 - the DEEP RUN: a dropping spider, a stalking ghost, a floor barnacle, a cave plant, a spiked chasm a lift ferries (PIT3, still double-jumpable so the lift is flair), a rightward speed conveyor + a second block slime, a fire critter, a treasure mimic and a finale crusher to the flag. Three checkpoints up from one. The spook-sheet foes (bat/spider/ghost/mimic/plant) are gSpooksOK-gated: a missing enemies.png degrades them silently and the level stays completable on the native foes (slimes/snail/crushers/fire/barnacle). Example-side only (no Kit change, no harness bump). Static gates clean; the geometry audit caught a goal past the ground edge, a coin + decor crowding the flag and a checkpoint on the pit lip - all fixed, 0 findings across all 7 levels. Needs the OXT pass for feel/spacing. Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com> Claude-Session: https://claude.ai/code/session_01X92APxUJUMue3bAzXiX9V2
L6 is the first level with more than one checkpoint, which exposed a
single-checkpoint assumption: pfMakeCheckpoint stored the flag sprite and
its x in single globals (gCheckSpr/gCheckX) that each call overwrote, and
the sensor handler banked gCheckX + raised gCheckSpr behind a one-time
gCheckpointOn guard. With three flags only the LAST (5008) was tracked, so
touching the first flag banked respawn=5008 and raised the 5008 flag - the
first never lit ("didn't work") and a downstream flag stood pre-raised
("already up"). L1-L5 worked only because they each have exactly one.
Fix (example-side): each flag now carries its OWN respawn x (uPfCheckX)
and a one-shot guard (uPfCheckDone); the sensor handler activates the
flag you TOUCHED (raises pSensorCtrl, banks its x) and only ever ADVANCES
gRespawnX, so a knockback onto an earlier flag can't drag respawn
backward. Single-checkpoint levels behave identically (no regression).
No Kit change, no harness bump. Static gates clean, audit 0 findings.
Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>
Claude-Session: https://claude.ai/code/session_01X92APxUJUMue3bAzXiX9V2
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What
Begins the level-length / variety pass the user asked for: the later levels had been getting shorter and thinner than L1. This PR audits all seven levels and expands the thinnest one (L6 "Cavern Depths") from a single ~3,000px act into a full three-act level, with a rich cave bestiary.
The audit (current state)
Target (agreed with the user): bring the thin levels up to ~6,500px / ~24 coins — consistent and challenging, not grindy. Worst-first, one level per increment so each gets an OXT pass.
L6 — Cavern Depths, now ~6,400px / 24 coins / 3 checkpoints
All of Act 1 is kept verbatim; two acts of proven geometry are appended:
The spook-sheet foes (bat/spider/ghost/mimic/plant) are
gSpooksOK-gated: a missingenemies.pngdegrades them silently and the level stays completable on the native foes.Verification
check-livecodescript.py— PASSaudit-platformer.py— 0 findings across all 7 levels (it caught a goal past the ground edge, a coin + decor crowding the flag, and a checkpoint on a pit lip; all fixed)Needs the OXT pass for feel/spacing and the spook art. L5, L7 (and topping up L2's coins) follow in subsequent increments.
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