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Planner: Depth dependent setpoint changes in CCR mode

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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 <helling@atdotde.de>
This commit is contained in:
Robert C. Helling 2021-02-21 17:43:26 +01:00 • committed by Dirk Hohndel
parent 5595a70bd5
commit 6b8a07f0d9
1 changed files with 24 additions and 8 deletions
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32
core/planner.c
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@ -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);