diff options
| author |  Rick Walsh <rickmwalsh@gmail.com> | 2015-09-20 18:22:24 +1000 |
|---|---|---|
| committer |  Dirk Hohndel <dirk@hohndel.org> | 2015-09-20 08:00:09 -0700 |
| commit | 899427079e16aebf5961cfe3bffda044f10207f1 (patch) | |
| tree | f20e887c0c851499150859e425429c27c69cefdb /planner.c | |
| parent | 28c1dc754d1e0ef6212982a32d620a564f22ac3d (diff) | |
| download | subsurface-899427079e16aebf5961cfe3bffda044f10207f1.tar.gz | |
VPMB: Reset ceiling pressures at start of planned dive
We do not want to remember max_bottom_ceiling_pressure from the previous planned
dive - it makes the Boyle's law compensation incorrect if the previous planned
dive was a deeper deep-to-shallow multi-level dive.
E.g. Plan these dives (without applying this patch) with VPM-B nominal
conservatism:
Plan 30 m for 20 min (total run time = 28 min)
Now plan 100 m for 20 min, followed by 70 m @ 23 min and 70 m at 30 min
Re-plan 30 m for 20 min (total run time = 50 min)
With this change, the re-planned dive run time is 28 min, as it should be.
We probably don't have to reset first_ceiling_pressure too, but it's cleaner if
we do.
Signed-off-by: Rick Walsh <rickmwalsh@gmail.com>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
Diffstat (limited to 'planner.c')
| -rw-r--r-- | planner.c | 1 |
1 files changed, 1 insertions, 0 deletions
@@ -992,6 +992,7 @@ bool plan(struct diveplan *diveplan, char **cached_datap, bool is_planner, bool diveplan->surface_pressure = SURFACE_PRESSURE; displayed_dive.surface_pressure.mbar = diveplan->surface_pressure; clear_deco(displayed_dive.surface_pressure.mbar / 1000.0); + max_bottom_ceiling_pressure.mbar = first_ceiling_pressure.mbar = 0; create_dive_from_plan(diveplan, is_planner); // Do we want deco stop array in metres or feet? |