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VPMB: Reset ceiling pressures at start of planned dive

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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>
This commit is contained in:
Rick Walsh 2015-09-20 18:22:24 +10:00 • committed by Dirk Hohndel
parent 28c1dc754d
commit 899427079e
1 changed files with 1 additions and 0 deletions
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planner.c
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@ -992,6 +992,7 @@ bool plan(struct diveplan *diveplan, char **cached_datap, bool is_planner, bool
diveplan->surface_pressure = SURFACE_PRESSURE; diveplan->surface_pressure = SURFACE_PRESSURE;
displayed_dive.surface_pressure.mbar = diveplan->surface_pressure; displayed_dive.surface_pressure.mbar = diveplan->surface_pressure;
clear_deco(displayed_dive.surface_pressure.mbar / 1000.0); 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); create_dive_from_plan(diveplan, is_planner);
// Do we want deco stop array in metres or feet? // Do we want deco stop array in metres or feet?