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Clock story in TimeManager: Difference between revisions
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→Prior 2018: sim time
(Created page with "{{stub}} ===Clock story, an exploration of timeManager.cxx=== We'll make a travel in the clock's country, to understand what's happening in [https://sourceforge.net/p/flight...") |
(→Prior 2018: sim time) |
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=Prior 2018= | =Prior 2018= | ||
The simulation time: the simulated time clock was something basic, we started at 0, do some clamping on the delta, (sim/max-simtime-per-frame) then only allow dt to be multiple of 1/modelHz (120 by default) this give a "dtRemainder" difference between the time we mesured, and the time we keep as timestamp; | |||
Then is applied time acceleration, giving a sim time unrelated to real time flow, for time accel != 1 | |||
we have a clock : | |||
having 1/modelHz as basic step (before time accel) | |||
able to pause | |||
suffering for acceleration if time accel is used | |||
This simulation time was used for the flight simulation as intended, but was the timestamp reference for mp protocol. | |||
That's what lead to the 2018 change, the need to a clock for the mp protocol, not based on simulated time, but a "real time" timestamp. | |||
= before 2021= | = before 2021= | ||