Prepare for PSCR calculations

Calculations for passive semi-closed rebreathers are pretty much like OC
except the pO2 is lower bey a certain (SAC dependent) factor. This patch
introduces the corresponding calculations in case dctype == PSCR which is
so far never set and there is currently no UI for these calculations. As
pO2 is SAC dependent it takes a certain attempt at getting it and drops to
defaults from the prefs otherwise.

As there is no UI at this point and I also don't have any dives, this has
not received much testing, yet, but it compiles. At least.

Signed-off-by: Robert C. Helling <helling@atdotde.de>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>

1 files changed, 2 insertions, 0 deletions

diff --git a/pref.h b/pref.h
index bd2c38469..733a194bf 100644
--- a/pref.h
+++ b/pref.h
@@ -67,6 +67,8 @@ struct preferences {
 	bool drop_stone_mode;
 	int bottomsac;
 	int decosac;
+	int o2consumption; // ml per min
+	int pscr_ratio; // dump ratio times 1000
 	bool show_pictures_in_profile;
 	bool use_default_file;
 };