run_wasd: one _has_scrape_vertical_contact() before move_and_slide and one
after; fold repeated predicates into wish_active_scrape_vertical_pre and
post_slide_wish_floor_scrape.
Review doc: mark suggestions #2/#4 done; suggestion #1, nits, verification
ledge bullet, and partial doc rows reviewed/deferred with strikethrough notes.
Extract static helpers (floor-ray continuation, median feet Y, micro-slip
XZ projection, wish-aligned horizontal velocity) from the tick path so
GdUnit can cover seam math without physics doubles. Add
player_locomotion_wasd_test.gd, document in README, and update NEO-22
plan/review.
Move the WASD physics tick into player_locomotion_wasd.gd so player.gd
stays under the 1600-line CI cap. Fix gdlint class order (enum before
consts), load-constant naming, and wrap long doc lines. Update NEO-22
review and plan; refresh gdlintrc comment.
Delete ground_pick and GroundPick wiring; PositionAuthorityClient now only
boot GET and move-stream POST. main.gd snaps on authoritative position only.
Update client/server READMEs, cursor rule example, NEO-22 plan note, and
GdUnit authority tests (stream 400 + boot resync).
Stable idle latches _idle_anchor_active and _hold_idle_anchor clamps XZ each
tick. Locomotion bypasses that branch, so the anchor stayed at the pre-walk
position while the capsule moved; releasing keys ran idle again and
_hold_idle_anchor teleported to the stale anchor.
Successful move-stream responses echoed server position roughly one RTT behind
integrated move_and_slide, so apply_as_snap still fired whenever dh exceeded
the locomotion skip threshold. Treat stream 200 as ack-only: do not emit
authoritative_position_received. Boot GET and click-move verify unchanged.
Update README + GdUnit expectation.
Stream HTTP responses can lag integrated move_and_slide by roughly one RTT,
so apply_as_snap was pulling the capsule backward each tick while moving.
Skip small XZ corrections when wish or horizontal speed indicates locomotion,
with a cap so large desync still snaps. move_rejected sets a one-shot flag so
resync after move-stream 400 still applies the authoritative pose.
Introduce POST /game/players/{id}/move-stream with ordered targets, full-chain
validation before apply, and PositionStateResponse. Godot client uses camera-
relative WASD, queues samples, and snaps to stream responses; debug builds keep
click-to-move via ground_pick. Update READMEs, E1.M1 snapshot, and tests.
Add prototype_smooth_hill_piece for QA geometry alongside main scene wiring.
Refresh player locomotion and main scene integration from stashed work.
Track docs/plans/NEO-22-implementation-plan.md (WASD replaces click-to-move).
Migrate Jira NEON-* references to Linear NEO-* and linear.app links in
docs, Cursor rules, READMEs, and traceability comments. Renamed
implementation plans and dated reviews to NEO filenames.
Branch is based on origin/main with this commit only (no NEON-29
gameplay chain). client/README follows main’s district/map copy;
player.gd matches main aside from NEO-14 debug trace prefixes.
Traces showed has_goal=true, vlat&&ncol, MOVE_SPEED XZ flipping while
stable=false: vert_err ~0.31 stayed above VERT_ARRIVE_EPS so arrival never
cleared the goal — not idle jitter.
Run vertical-route latch before arrival; when on floor with vlat&&ncol,
allow vert_err up to WALK_COLUMN_NEAR_ARRIVE_VERT (0.36 m) if horiz_dist
<= ARRIVE_EPS. Backup: clear_nav_goal after WALK_COLUMN_STUCK_FRAMES with
net drift < WALK_COLUMN_STUCK_MAX_DRIFT in the same regime.
Idle jitter was not walk/peel: without has_goal, stable idle required
floor_normal·up >= 0.998. Tread+riser contacts often report ~0.996–0.997,
so stable idle never latched and rim settle nudge + idle move_and_slide
ran every tick. Use STABLE_IDLE_FLOOR_HOLD_MIN_UP_DOT (0.992) for the
floor-flat check when slide contacts are ridged and we are still using the
strict entry threshold.
When vlat&&ncol, XZ within ~0.92*ARRIVE_EPS, and vert_sep in a narrow band
above vertical-arrival noise, zero XZ velocity so nav slide cannot drive ~6 cm
Y oscillation on violet stairs. Descending fallback when column latch is off;
skip when goal is above feet (climb still needs XZ).
Remove WALK_TREAD_STABILITY horiz cap (it ran for whole vlat&&ncol band and
made the last steps sluggish without fixing jitter).
Raise WALK_CONTINUATION_MAX_BELOW_FEET 0.078→0.108 m so ~0.104 m tread drops
count as walk continuation; probe/debounced peel+snap stop flipping each tick.
Kept below ~0.25 m so ~0.3 m gold→floor void still rejects the slab.
Revert NAV_PATH_STEER_MIN_LOOKAHEAD to 0.22 m.
Steering reverse clamp was reverted (blocked arrival). Instead, when on floor
and (vlat && ncol && vert_sep band) or tight XZ + small vert_sep, clamp
horizontal speed to 1.35 m/s so move_and_slide does not drive riser ping-pong
at full MOVE_SPEED. Bump path steer min lookahead 0.22→0.28 m.
_walk_clamp_steering_reverse kept prior horizontal velocity whenever the new
steer-to-goal direction opposed current motion (dot < -0.35). That prevented
ever closing ARRIVE_EPS in many geometries, so walk never cleared, XZ stayed at
MOVE_SPEED, and air gravity could run indefinitely (y << 0).
Restore direct/path steering without the clamp; NAV_COLUMN_STEER_EXIT_DIST
back to 0.97.
Path lookahead vs direct goal could reverse horizontal velocity every physics
tick on treads (NEON-16), driving slide/snap Y jitter. Clamp new steer to
prior bearing when dot < -0.35 and speed is above a small threshold.
Widen NAV_COLUMN_STEER_EXIT_DIST (0.97→1.12) to reduce path/direct mode
chatter when horiz_dist wobbles near the old band.
DESCEND_LIP_SNAP_CAP (0.1) ran whenever goal was below feet by geometry,
independent of probe debounce. Feet_y noise on treads toggled 0.32 vs 0.1
snap and caused ~2–3 cm Y jitter. Apply lip cap only when debounced peel is
armed and not in peel suspend; otherwise keep FLOOR_SNAP_MOVING.
Continuation rays reject stair treads (~0.104 m) under WALK_CONTINUATION_MAX_BELOW_FEET
(0.078 m), so is_on_floor + probe flickered every tick and toggled peel vs full snap
(Y jitter ~1.0 m). Arm peel/snap aggression only after WALK_PEEL_PROBE_FALSE_FRAMES
consecutive probe failures; deep descent still arms immediately.
Widen horiz peel suspend (0.34→0.46 m vert, 2→5 m XZ) for goal/tread separation gaps.
Widen vertical-route latch off-sep (0.038→0.085) so descent toward floor
does not drop vlat while feet still wobble on stairs.
Add horiz+vert fallback: suspend peel and restore snap when vert_sep ≤0.34 m
and horiz_dist ≤2 m, covering ncol=false paths where goal Y matches slab
height but tread peel still fought snap (violet stairs ~y=0.92).
When vertical route is latched and nav column steering is active, peel
plus zero floor snap caused a 3-frame limit cycle (NEON-16 traces).
Skip peel and restore normal snap while feet are within 0.48 m of the
goal surface vertically.
Lower WALK_CONTINUATION_MAX_BELOW_FEET to 0.078 m (under ~0.104 m treads) so
the next tread is not treated as forward walk support; ledge peel runs on
descents and pulls down onto each step instead of gliding with weak air gravity.
Raise PLAYER_VERTICAL_ACCEL_MULTIPLIER to 9× for peel, walk-air, and idle-air.
Apply PLAYER_VERTICAL_ACCEL_MULTIPLIER (~2.45×) to walk-airborne gravity,
ledge peel integration, and idle-airborne gravity for snappier falls.
Peel used to clear when goal.y >= feet_y - DESCEND_GOAL_Y_MARGIN, which
stopped peeling ~6 cm above the click surface while XZ was already at the
destination — use vertical_arrival_error <= VERT_ARRIVE_EPS instead, with
a small guard when the goal is clearly above the feet (climb).
Direct global_position.y edits may not stick vs Jolt after move_and_slide.
Use move_and_collide for the peel step so motion goes through physics.
If get_gravity() is near zero, use -9.81 for peel, walk air, and idle air.
CharacterBody3D MOTION_MODE_GROUNDED move_and_slide clears downward
velocity while is_on_floor(), so gravity on velocity never produced
vertical motion off terrace lips (all prior probe/snap tweaks were no-ops).
After each walk move_and_slide, when the goal surface is below the feet
and probes/deep-descent say drop, accumulate peel_vy += g·dt and apply
global_position.y += peel_vy·dt. Airborne walk still uses velocity gravity.
Set physics/3d/default_gravity=9.81 explicitly in project.godot.
Rays and is_on_floor() can still agree the capsule is supported while the
authoritative click is on the main floor far below (TerracePlatformB lip).
When feet are >0.42 m above the goal surface Y, always add walk gravity and
zero moving floor snap. Shorter drops (e.g. gold step to floor) still use
the probe heuristic only.
Degenerate XZ (velocity and want_goal_h ~0) made _walk_has_close_floor_probe_below
return after center-only, suppressing ledge gravity for the whole move.
Add _resolve_walk_probe_dir_xz: when goal surface is below feet, prefer
horizontal bearing to the goal, else nav path lookahead, else fallbacks.
Non-descending motion keeps velocity-first probes.
Remove the nav-column-only want_goal_h override (superseded by descending
branch). Reverts the regression where the capsule stayed on violet until XZ.
Column steering follows path tangents on the violet deck while the
authoritative goal sits on the lower floor; velocity-aligned support rays
kept hitting deck in the tangent direction and suppressed ledge gravity.
Use want_goal_h for probe offsets when vertical routing + column steer
+ on floor + goal surface below feet.
Down-rays use 0.32 m depth; a gold step is ~0.3 m above the slab, so a
forward sample over empty space still intersected the gray floor and
passed the up-normal test. That looked like continued support, so ledge
gravity and snap-off never fired.
Only treat a hit as walk support if its Y is within 0.14 m below the
current feet (one tread scale); deeper hits are a lower deck / pit.
Walk support used any ray hit under the foot disk, so the center sample
could still see the platform while the leading edge was over a void.
is_on_floor() stayed true from the lip, snap stayed strong, and vy was
zeroed each tick — horizontal skate until XZ arrival.
Now require a center hit plus at least one forward-biased sample in the
movement direction when horizontal intent is non-zero; use velocity XZ
for probe direction so nav/path steering matches the rays.
Single center ray + flat floor-normal gate missed tilted lip contacts
and still hit deck under capsule center while leading edge hung over void.
Moving FLOOR_SNAP_MOVING then cancelled gravity each tick.
Sample down rays at center and offsets along walk direction; depth 0.32;
set floor_snap_length 0 when is_on_floor but no probe hit.
Jolt + floor snap could keep is_on_floor true over open space toward a
lower click target, so vy stayed 0 until arrival. Add a short downward
ray under the capsule feet (WALK_SUPPORT_PROBE_DEPTH) and apply gravity
when no upward-facing hit is close, only on fairly level floor normals.
Vertical+column branch scanned path for first point with XZ offset >5 cm;
Jolt moved the body across that edge each tick and flipped the chosen
waypoint → 180° velocity oscillation (vlat && ncol).
Use NavigationAgent3D.get_next_path_position() when navigation not
finished; fall back to auth goal when finished or degenerate.
Raise stable-idle floor up-dot entry to 0.998 so Jolt normals on a flat
box can latch the idle anchor; 0.999 rarely tripped and corrective
move_and_slide + rim/bump nudges kept moving XZ.
Add STABLE_IDLE_ENTER_STREAK_FRAMES (2) before first latch; arrival
path still latches immediately. Unlatch budget 8→10 ticks.
feet_y wobble from move_and_slide on approach treads crossed
DESCEND_GOAL_Y_MARGIN each frame, toggling path vs direct steer.
Schmitt latch (WALK_VERT_ROUTE_LATCH_ON_SEP/OFF_SEP) with reset on
nav lifecycle. Extend debug_idle_trace with feet_y, vert_sep, vlat,
ncol. Add player_test for latch reset.
While _idle_stable_latched, use STABLE_IDLE_FLOOR_HOLD_MIN_UP_DOT (0.992) for
idle_support floor flatness so tread-edge normal flicker does not unlatch as
often. idle_support_is_stable gains optional min_flat_up_dot; unlatch streak 8.
Prototype position label updates in main _physics_process. Add GdUnit for param.
loose_ticks+ridged no longer forces ~0.8s corrective idle when floor normal
is still level (tread corner with vertical riser). Gate that branch on
shallow floor (dot < IDLE_RIM_MIN_FLOOR_UP_DOT). Bump unlatch streak to 5.
Update GdUnit + NEON-29 plan.
Hold latched zero-vel idle through STABLE_IDLE_UNLATCH_TICKS consecutive
unstable readings so thin tread lips do not drop into corrective move_and_slide
every other frame. Idle anchor now freezes Y as well as XZ. Reset latch on
goal/snap/arrival; seed latch on arrival when support is stable after idle tick.
Update hold_idle_anchor GdUnit expectation.
Single-radius switch at DIRECT_APPROACH_RADIUS let horiz_dist cross every
frame between direct-to-goal and nav-path steering, flipping velocity ~180°.
Schmitt band NAV_COLUMN_STEER_ENTER/EXIT with latched _walk_nav_column_steering;
reset on new goal, snap, arrival, clear.
Stop forcing moving floor_max_angle for the full post-stop window on open
flat support; tighten ridged wallish threshold; relax stable floor dot;
on arrival, take stable-idle path when support is already stable after
one idle tick. Add GdUnit case for shallow seam normals.
idle_support_is_stable no longer treats every post-stop loose-tick frame as
unstable; only slide normals showing floor+wall (lip) keep corrective idle.
Deduplicate ridged-contact check via idle_slide_contacts_are_ridged.
Relax STABLE_IDLE_FLOOR_MIN_UP_DOT slightly for Jolt normal flicker.
Update GdUnit cases and NEON-29 plan note.
TerracePlatformB top is ~0.6 m above the floor; agent_max_climb only
limited nav links, while chained step assist could still climb in one
click. Refuse assist when goal surface is more than 0.35 m above feet
so the gold TerraceStepB path (or a second click) is required.
VinPropane