NS-23: Remove bump rim velocity unstick (fixes edge vibration)

Per-frame wall-normal + goal boosts fought a flipping wall normal and capped
re-vectoring, causing back-and-forth jitter. Drop _apply_bump_rim_wall_unstick
and related helpers/constants; keep direct step-down + footprint logic only.
STEP_OFF_DESCEND_SPEED 2.2 → 1.75.

client/scripts/player.gd

@@ -25,12 +25,7 @@ const FLOOR_PROBE_BODY_Y_OFFSET: float = -0.55
 ## Extra xz rays for step-off; max Y keeps bump support when center ray sees floor first.
 const STEP_FOOTPRINT_HALF: float = 0.2
 ## Downward vy only while step-off bypass is active (not global gravity).
-const STEP_OFF_DESCEND_SPEED: float = 2.2
+const STEP_OFF_DESCEND_SPEED: float = 1.75
-## Peel off frustum wall when sliding tangentially along the rim (m/s, added to xz velocity).
-const BUMP_RIM_WALL_PUSH: float = 2.6
-## Extra push toward goal xz while on a wall in that rim case (m/s).
-const BUMP_RIM_GOAL_BOOST: float = 1.15
-const BUMP_RIM_MAX_HORIZ_MULT: float = 1.38
 ## If next waypoint is within this xz of us, steer to goal (rim / underfoot waypoints).
 const NEXT_WAYPOINT_MIN_HORIZ_SQ: float = 0.01
 ## Editor group on stepped bump colliders; value must match `main.tscn`.
@@ -198,44 +193,6 @@ func _set_horizontal_velocity_toward(point: Vector3) -> void:
 	velocity.y = 0.0
 
 
-func _departing_bump_step_to_lower_floor() -> bool:
-	var fp: Dictionary = _footprint_step_down_state()
-	if not bool(fp["touches_bump_step"]):
-		return false
-	var max_y: float = float(fp["max_y"])
-	var dest_y: float = _destination_footing_y()
-	return max_y >= dest_y + STEP_OFF_MIN_DROP
-
-
-## Frustum walls turn “toward goal” into tangential rim slide; nudge out + along goal, capped.
-func _apply_bump_rim_wall_unstick() -> void:
-	if not _departing_bump_step_to_lower_floor():
-		return
-	var pos: Vector3 = global_position
-	var to_g: Vector3 = Vector3(_auth_walk_goal.x - pos.x, 0.0, _auth_walk_goal.z - pos.z)
-	var lg: float = to_g.length_squared()
-	if lg < 1e-14:
-		return
-	to_g /= sqrt(lg)
-	if is_on_wall():
-		var wn: Vector3 = get_wall_normal()
-		var wn_h: Vector3 = Vector3(wn.x, 0.0, wn.z)
-		var lw: float = wn_h.length_squared()
-		if lw > 1e-12:
-			wn_h /= sqrt(lw)
-			if wn_h.dot(to_g) >= -0.32:
-				velocity.x += wn_h.x * BUMP_RIM_WALL_PUSH
-				velocity.z += wn_h.z * BUMP_RIM_WALL_PUSH
-	velocity.x += to_g.x * BUMP_RIM_GOAL_BOOST
-	velocity.z += to_g.z * BUMP_RIM_GOAL_BOOST
-	var cap: float = MOVE_SPEED * BUMP_RIM_MAX_HORIZ_MULT
-	var h: Vector2 = Vector2(velocity.x, velocity.z)
-	if h.length_squared() > cap * cap:
-		h = h.normalized() * cap
-		velocity.x = h.x
-		velocity.z = h.y
-
-
 func _physics_process(_delta: float) -> void:
 	if not _has_walk_goal:
 		velocity = Vector3.ZERO
@@ -261,14 +218,12 @@ func _physics_process(_delta: float) -> void:
 	var nav_map: RID = _nav_agent.get_navigation_map()
 	if NavigationServer3D.map_get_iteration_id(nav_map) == 0:
 		_set_horizontal_velocity_toward(_auth_walk_goal)
-		_apply_bump_rim_wall_unstick()
 		move_and_slide()
 		return
 
 	if _use_direct_step_down_steering():
 		_set_horizontal_velocity_toward(_auth_walk_goal)
 		velocity.y = -STEP_OFF_DESCEND_SPEED
-		_apply_bump_rim_wall_unstick()
 		move_and_slide()
 		return
 
@@ -284,5 +239,4 @@ func _physics_process(_delta: float) -> void:
 		else:
 			_set_horizontal_velocity_toward(_auth_walk_goal)
 
-	_apply_bump_rim_wall_unstick()
 	move_and_slide()