diff options
Diffstat (limited to 'src/aircraft_cmd.cpp')
| -rw-r--r-- | src/aircraft_cmd.cpp | 9 |
1 files changed, 8 insertions, 1 deletions
diff --git a/src/aircraft_cmd.cpp b/src/aircraft_cmd.cpp index cad674a20..71d8d3bb2 100644 --- a/src/aircraft_cmd.cpp +++ b/src/aircraft_cmd.cpp @@ -598,7 +598,14 @@ enum AircraftSpeedLimits { */ static int UpdateAircraftSpeed(Aircraft *v, uint speed_limit = SPEED_LIMIT_NONE, bool hard_limit = true) { - uint spd = v->acceleration * 16; + /** + * 'acceleration' has the unit 3/8 mph/tick. This function is called twice per tick. + * So the speed amount we need to accelerate is: + * acceleration * 3 / 16 mph = acceleration * 3 / 16 * 16 / 10 km-ish/h + * = acceleration * 3 / 10 * 256 * (km-ish/h / 256) + * ~ acceleration * 77 (km-ish/h / 256) + */ + uint spd = v->acceleration * 77; byte t; /* Adjust speed limits by plane speed factor to prevent taxiing |