Remove uses of .str(), .c_str() and some other methods of SGPath.
Pass SGPath directly where possible, or explicitly convert to the
appropriate 8-bit encoding.
- sim-speed-up (a/A keys) offsets warp correctly. This means at 4x speed
up the warp will increase by 3 seconds for one elapsed real second.
In practice this means simulation elements timed using sim ‘current time’
will be correctly synchronised with those using simulated elapsed time.
(AI traffic being a prime example of this)
- warp-delta (t/T keys) is independent of frame rate, and works when
paused. The warp-delta values in the keybindings / GUI dialog
will need to be updated since warp-delta in now seconds-per-second,
as opposed to seconds-per-frame.
- consistent with pause (freeze), /sim/speed-up is now applied to the
dt value for all subsystems, not just the FDM and some instruments.
For example AI traffic can now be sped-up or slowed down.
- requires both an FGData and Simgear update.
Configurable with properties:
/sim/time/warp-easing == false ? jump to new time offset (orig. behaviour)
/sim/time/warp-easing == true ? use easing parameter to adjust warp
/sim/time/warp-easing-duration-secs: time in seconds to reach the new value
/sim/time/warp-easing-method: easing method to apply. default: swing
Add range checks and provide error messages.
Extend time offset to 64bit - so we're safe for 2038-01-19 (and the next
couple of millions years beyond...).
Support partial date/time strings, such as --start-date-gmt=2011 or
--start-date-gmt=:::12:00:00
For use with frame rate throtteling make use of
SGTimeStamp::sleepUntil. This function should cover the
system dependent parts of accurate sleeps and should
move the system dependent code out of the time manager.
