Planner: Add backgas breaks

If the corresponding checkbox is checked the planner does interrupt
pure O2 deco after 12min for 6min on cylinder 0.

To make this work for air I removed the gasmix_is_null logic.

I guess that makes the planner feature complete for the next release.

[Dirk Hohndel: trivial merge into latest master]

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

1 files changed, 2 insertions, 1 deletions

diff --git a/subsurfacestartup.c b/subsurfacestartup.c
index 8d8d848f2..a451c2ba3 100644
--- a/subsurfacestartup.c
+++ b/subsurfacestartup.c
@@ -39,7 +39,8 @@ struct preferences default_prefs = {
 	.ascratelast6m = 1000 / 60,
 	.descrate = 18000 / 60,
 	.bottompo2 = 1400,
-	.decopo2 = 1600
+	.decopo2 = 1600,
+	.doo2breaks = false
 };
 
 int run_survey;