Pavel Okhlopkov 39719cac82 refactor: decompose TransportManager and upgrade Entity to CatmullRom splines ...

TransportManager decomposition:
- Extract TransportClockSync: server clock offset, yaw flip detection,
  velocity bootstrap, client/server mode switching
- Extract TransportAnimator: spline evaluation, Z clamping, orientation
  from server yaw or spline tangent
- Slim TransportManager to thin orchestrator delegating to ClockSync and
  Animator; add pushTransform() helper to deduplicate WMO/M2 renderer calls
- Remove legacy orientationFromSplineTangent (now uses
  CatmullRomSpline::orientationFromTangent)

Entity path following upgrade:
- Replace pathPoints_/pathSegDists_ linear lerp with
  std::optional<CatmullRomSpline> activeSpline_
- startMoveAlongPath builds SplineKeys with distance-proportional timing
- updateMovement evaluates CatmullRomSpline for smooth Catmull-Rom
  interpolation matching server-side creature movement
- Reset activeSpline_ on setPosition/startMoveTo to prevent stale state

Tests:
- Add test_transport_components (9 cases): ClockSync client/server/reverse
  modes, yaw flip detection, Animator position eval, server yaw, Z clamping
- Link spline.cpp into test_entity for CatmullRomSpline dependency

Signed-off-by: Pavel Okhlopkov <pavel.okhlopkov@flant.com>

2026-04-11 09:50:38 +03:00

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