In check_maneuver_trigger() (true-anomaly branch), eliminate the
propagate_orbital_elements() look-ahead probe that was called every
frame for pending maneuvers. Replace with direct analytical computation
of dt_needed from mean anomaly delta.
Benefits:
- Eliminates ~24k redundant Kepler solves per Hohmann transfer wait
period (DT=10s, 244k s wait time)
- More precise: no discretization error from single-step propagation
- Simpler logic: removed angle_between check, wraparound detection
- Removes dead angle_between() helper function
Elliptical orbits only — added TODO for parabolic/hyperbolic support.
All 154 tests pass (240,445 assertions).
- Move RendezvousState and RendezvousTarget from rendezvous_types.h to orbital_objects.h
- Remove rendezvous_types.h entirely
- Simplify rendezvous.h to depend on orbital_objects.h
- Delete spacecraft.h and spacecraft.cpp (consolidated into orbital_objects.h)
- Update all include paths across codebase
- All tests pass (4 pre-existing failures unchanged)
- Add scheduled_dt field to Maneuver struct for precise timing
- Propagate spacecraft to exact trigger position before burn execution
- Handle 2π→0 wraparound in trigger crossing detection
- Add spacecraft tracking to prevent double-propagation in same frame
- Fix test configs and tolerances for new behavior
All 143 tests passing.
- Fix omega = π bug for near-zero inclination orbits (src/orbital_mechanics.cpp:277)
- Added inclination threshold (0.01 rad) before using atan2 path
- Prevents unstable omega calculation when h_vec.y is tiny
- Fix true anomaly trigger firing at wrong location (src/maneuver.cpp:172-213)
- Replaced binary search with O(1) analytical time calculation
- Uses mean motion: n = √(μ/a³) to compute exact time to target
- Added true_anomaly_to_eccentric_anomaly() function
See docs/planning/periapsis_burn_bug_analysis.md for technical details
See docs/periaapsis_burn_test_results.md for test results and next steps
Test status:
- Issue 1 (omega): ✅ FIXED and validated
- Issue 2 (triggers): ✅ IMPLEMENTED, 4 tests fail due to design (expected behavior)
- Full suite: 139 passed, 4 failed (all periapsis burn tests)
Next steps: Decide on test tolerance approach (see docs/periaapsis_burn_test_results.md)
Implement first 7 priority functions for maneuver UI controls:
- add_maneuver_to_simulation(): Add maneuvers dynamically
- remove_maneuver_by_index(): Remove maneuvers from simulation
- create_maneuver(): Helper to construct maneuver structs
- get_burn_direction_name(): Get descriptive strings for directions
- preview_burn_result(): Preview orbital elements after burn
- calculate_hohmann_transfer(): Calculate optimal two-burn transfer
- validate_burn_parameters(): Validate burn parameters
See docs/planning/maneuver_ui_controls.md for full implementation plan.
- Switch spacecraft and bodies from RK4 to analytical propagation using propagate_orbital_elements()
- Fixed three bugs in hyperbolic orbit propagation (formula errors and insufficient Newton-Raphson iterations)
- Add orbital element reconstruction after burns and SOI transitions
- Zero energy drift for circular, elliptical, parabolic, and hyperbolic orbits
- All 132 tests passing (240,294 assertions)
Merge spacecraft management into simulation module:
- Move Spacecraft struct from maneuver.h to spacecraft.h
- Add spacecraft array to SimulationState (spacecraft, craft_count, max_craft)
- Remove separate SpacecraftState struct and related functions
- Update create_simulation() to require max_craft parameter
- Move spacecraft update logic into update_simulation()
- Make load_spacecraft_config() internal helper, called by load_system_config()
- Update all test files to use new API with 3-parameter create_simulation()
- Handle max_craft=0 case gracefully (no spacecraft allocation)
Test results: 26/27 passing (1 pre-existing SOI test unrelated to changes)
Add basic maneuvering API for spacecraft with impulsive delta-v burns in local frame:
- Add vec3_dot() function to physics module
- Create Spacecraft struct and SpacecraftState for separate spacecraft management
- Implement 6 burn directions: prograde, retrograde, normal, anti-normal, radial in/out
- Add RK4 propagation for spacecraft with update_spacecraft()
- Extend config loader to parse [[spacecraft]] TOML sections
- Add 6 test cases verifying burn physics and propagation stability
- Rename old mission_planning module to _old for future reference
Test results: 26/27 passing (1 pre-existing SOI test unrelated to changes)
cinnaboot