diff options
Diffstat (limited to 'src/aircraft_cmd.cpp')
| -rw-r--r-- | src/aircraft_cmd.cpp | 28 |
1 files changed, 23 insertions, 5 deletions
diff --git a/src/aircraft_cmd.cpp b/src/aircraft_cmd.cpp index c4e63eed5..8e45e9001 100644 --- a/src/aircraft_cmd.cpp +++ b/src/aircraft_cmd.cpp @@ -898,14 +898,32 @@ static bool UpdateAircraftSpeed(Vehicle *v) return t < v->progress; } -// get Aircraft running altitude +/** + * Gets the cruise altitude of an aircraft. + * The cruise altitude is determined by the velocity of the vehicle + * and the direction it is moving + * @param v The vehicle. Should be an aircraft + * @returns Altitude in pixel units + */ static byte GetAircraftFlyingAltitude(const Vehicle *v) { - switch (v->max_speed) { - case 37: return 162; - case 74: return 171; - default: return 180; + /* Make sure Aircraft fly no lower so that they don't conduct + * CFITs (controlled flight into terrain) + */ + byte base_altitude = 150; + + /* Make sure eastbound and westbound planes do not "crash" into each + * other by providing them with vertical seperation + */ + switch (v->direction) { + case DIR_N: case DIR_NE: case DIR_E: case DIR_SE: base_altitude += 15; break; + default: break; } + + /* Make faster planes fly higher so that they can overtake slower ones */ + base_altitude += min(30 * (v->max_speed / 37), 90); + + return base_altitude; } static bool AircraftController(Vehicle *v) |