From 6b8a07f0d93b09021490b6c4c7595e3cb0ea17c2 Mon Sep 17 00:00:00 2001 From: "Robert C. Helling" Date: Sun, 21 Feb 2021 17:43:26 +0100 Subject: Planner: Depth dependent setpoint changes in CCR mode We had a user request to allow for setpoint changes at certain depths for CCR deco. You can now enter a cylinder with name like "SP 1.4" ('S' and 'P' and ' ' and a float) with a switch depth and that cylinder is interpreted as a depth dependent setpoint switch. This user interface is a hack. But I believe that such setpoint changes are similar enough to gas switches during deco and should thus be handled in a simiar manner. I would be happy to hear ideas how this could be made less easter eggish. Suggested-by: Justin Ashworth Signed-off-by: Robert C. Helling --- core/planner.c | 32 ++++++++++++++++++++++++-------- 1 file changed, 24 insertions(+), 8 deletions(-) (limited to 'core') diff --git a/core/planner.c b/core/planner.c index 49e044f05..be257a0a0 100644 --- a/core/planner.c +++ b/core/planner.c @@ -382,7 +382,23 @@ struct gaschanges { int gasidx; }; -static struct gaschanges *analyze_gaslist(struct diveplan *diveplan, struct dive *dive, int *gaschangenr, int depth, int *asc_cylinder) +// Return new setpoint if cylinderi is a setpoint change an 0 if not + +static int setpoint_change(struct dive *dive, int cylinderid) +{ + cylinder_t *cylinder = get_cylinder(dive, cylinderid); + if (!cylinder->type.description) + return 0; + if (!strncmp(cylinder->type.description, "SP ", 3)) { + float sp; + sscanf(cylinder->type.description + 3, "%f", &sp); + return (int) (sp * 1000); + } else { + return 0; + } +} + +static struct gaschanges *analyze_gaslist(struct diveplan *diveplan, struct dive *dive, int *gaschangenr, int depth, int *asc_cylinder, bool ccr) { int nr = 0; struct gaschanges *gaschanges = NULL; @@ -390,7 +406,7 @@ static struct gaschanges *analyze_gaslist(struct diveplan *diveplan, struct dive int best_depth = get_cylinder(dive, *asc_cylinder)->depth.mm; bool total_time_zero = true; while (dp) { - if (dp->time == 0 && total_time_zero) { + if (dp->time == 0 && total_time_zero && (ccr == (bool) setpoint_change(dive, dp->cylinderid))) { if (dp->depth.mm <= depth) { int i = 0; nr++; @@ -737,12 +753,8 @@ bool plan(struct deco_state *ds, struct diveplan *diveplan, struct dive *dive, i best_first_ascend_cylinder = current_cylinder; /* Find the gases available for deco */ - if (divemode == CCR && !prefs.dobailout) { // Don't change gas in CCR mode - gaschanges = NULL; - gaschangenr = 0; - } else { - gaschanges = analyze_gaslist(diveplan, dive, &gaschangenr, depth, &best_first_ascend_cylinder); - } + gaschanges = analyze_gaslist(diveplan, dive, &gaschangenr, depth, &best_first_ascend_cylinder, divemode == CCR && !prefs.dobailout); + /* Find the first potential decostopdepth above current depth */ for (stopidx = 0; stopidx < decostoplevelcount; stopidx++) if (*(decostoplevels + stopidx) >= depth) @@ -929,6 +941,8 @@ bool plan(struct deco_state *ds, struct diveplan *diveplan, struct dive *dive, i previous_point_time = clock; current_cylinder = gaschanges[gi].gasidx; gas = get_cylinder(dive, current_cylinder)->gasmix; + if (divemode == CCR) + po2 = setpoint_change(dive, current_cylinder); #if DEBUG_PLAN & 16 printf("switch to gas %d (%d/%d) @ %5.2lfm\n", gaschanges[gi].gasidx, (get_o2(&gas) + 5) / 10, (get_he(&gas) + 5) / 10, gaschanges[gi].depth / 1000.0); @@ -983,6 +997,8 @@ bool plan(struct deco_state *ds, struct diveplan *diveplan, struct dive *dive, i if (pendinggaschange) { current_cylinder = gaschanges[gi + 1].gasidx; gas = get_cylinder(dive, current_cylinder)->gasmix; + if (divemode == CCR) + po2 = setpoint_change(dive, current_cylinder); #if DEBUG_PLAN & 16 printf("switch to gas %d (%d/%d) @ %5.2lfm\n", gaschanges[gi + 1].gasidx, (get_o2(&gas) + 5) / 10, (get_he(&gas) + 5) / 10, gaschanges[gi + 1].depth / 1000.0); -- cgit v1.2.3-70-g09d2