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26dd86e437
In analyze_gaslist() we were only keeping gases that had their .depth above the current depth, i.e. where we could switch to in the future. Now we take note as well of the strongest gas that we could have already switched to and switch to it before we attempt to ascend. [Dirk Hohndel: minor whitespace and code cleanup] Signed-off-by: Robert C. Helling <helling@atdotde.de> Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
911 lines
26 KiB
C
911 lines
26 KiB
C
/* planner.c
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*
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* code that allows us to plan future dives
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*
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* (c) Dirk Hohndel 2013
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*/
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#include <assert.h>
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#include <unistd.h>
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#include <ctype.h>
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#include <string.h>
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#include "dive.h"
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#include "divelist.h"
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#include "planner.h"
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#include "gettext.h"
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#include "libdivecomputer/parser.h"
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#define TIMESTEP 1 /* second */
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#define DECOTIMESTEP 60 /* seconds. Unit of deco stop times */
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int decostoplevels[] = { 0, 3000, 6000, 9000, 12000, 15000, 18000, 21000, 24000, 27000,
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30000, 33000, 36000, 39000, 42000, 45000, 48000, 51000, 54000, 57000,
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60000, 63000, 66000, 69000, 72000, 75000, 78000, 81000, 84000, 87000,
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90000, 100000, 110000, 120000, 130000, 140000, 150000, 160000, 170000,
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180000, 190000, 200000, 220000, 240000, 260000, 280000, 300000,
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320000, 340000, 360000, 380000 };
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double plangflow, plangfhigh;
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#if DEBUG_PLAN
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void dump_plan(struct diveplan *diveplan)
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{
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struct divedatapoint *dp;
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struct tm tm;
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if (!diveplan) {
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printf("Diveplan NULL\n");
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return;
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}
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utc_mkdate(diveplan->when, &tm);
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printf("\nDiveplan @ %04d-%02d-%02d %02d:%02d:%02d (surfpres %dmbar):\n",
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tm.tm_year + 1900, tm.tm_mon + 1, tm.tm_mday,
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tm.tm_hour, tm.tm_min, tm.tm_sec,
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diveplan->surface_pressure);
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dp = diveplan->dp;
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while (dp) {
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printf("\t%3u:%02u: %dmm gas: %d o2 %d h2\n", FRACTION(dp->time, 60), dp->depth, dp->o2, dp->he);
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dp = dp->next;
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}
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}
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#endif
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void set_last_stop(bool last_stop_6m)
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{
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if (last_stop_6m == true)
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decostoplevels[1] = 6000;
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else
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decostoplevels[1] = 3000;
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}
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void get_gas_from_events(struct divecomputer *dc, int time, int *o2, int *he)
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{
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// we don't modify the values passed in if nothing is found
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// so don't call with uninitialized o2/he !
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struct event *event = dc->events;
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while (event && event->time.seconds <= time) {
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if (!strcmp(event->name, "gaschange")) {
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*o2 = 10 * event->value & 0xffff;
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*he = 10 * event->value >> 16;
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}
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event = event->next;
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}
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}
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int get_gasidx(struct dive *dive, int o2, int he)
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{
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int gasidx = -1;
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struct gasmix mix;
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mix.o2.permille = o2;
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mix.he.permille = he;
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/* we treat air as 0/0 because it is special */
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//if (is_air(o2, he))
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// o2 = 0;
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while (++gasidx < MAX_CYLINDERS)
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if (gasmix_distance(&dive->cylinder[gasidx].gasmix, &mix) < 200)
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return gasidx;
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return -1;
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}
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void get_gas_string(int o2, int he, char *text, int len)
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{
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if (is_air(o2, he))
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snprintf(text, len, "%s", translate("gettextFromC", "air"));
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else if (he == 0)
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snprintf(text, len, translate("gettextFromC", "EAN%d"), (o2 + 5) / 10);
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else
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snprintf(text, len, "(%d/%d)", (o2 + 5) / 10, (he + 5) / 10);
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}
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double interpolate_transition(struct dive *dive, int t0, int t1, int d0, int d1, const struct gasmix *gasmix, int ppo2)
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{
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int j;
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double tissue_tolerance;
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for (j = t0; j < t1; j++) {
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int depth = interpolate(d0, d1, j - t0, t1 - t0);
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tissue_tolerance = add_segment(depth_to_mbar(depth, dive) / 1000.0, gasmix, 1, ppo2, dive);
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}
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return tissue_tolerance;
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}
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/* returns the tissue tolerance at the end of this (partial) dive */
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double tissue_at_end(struct dive *dive, char **cached_datap)
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{
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struct divecomputer *dc;
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struct sample *sample, *psample;
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int i, t0, t1, gasidx, lastdepth;
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int o2, he;
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double tissue_tolerance;
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if (!dive)
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return 0.0;
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if (*cached_datap) {
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tissue_tolerance = restore_deco_state(*cached_datap);
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} else {
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tissue_tolerance = init_decompression(dive);
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cache_deco_state(tissue_tolerance, cached_datap);
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}
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dc = &dive->dc;
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if (!dc->samples)
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return tissue_tolerance;
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psample = sample = dc->sample;
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lastdepth = t0 = 0;
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/* we always start with gas 0 (unless an event tells us otherwise) */
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o2 = get_o2(&dive->cylinder[0].gasmix);
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he = get_he(&dive->cylinder[0].gasmix);
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for (i = 0; i < dc->samples; i++, sample++) {
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t1 = sample->time.seconds;
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get_gas_from_events(&dive->dc, t0, &o2, &he);
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if ((gasidx = get_gasidx(dive, o2, he)) == -1) {
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report_error(translate("gettextFromC", "Can't find gas %d/%d"), (o2 + 5) / 10, (he + 5) / 10);
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gasidx = 0;
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}
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if (i > 0)
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lastdepth = psample->depth.mm;
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tissue_tolerance = interpolate_transition(dive, t0, t1, lastdepth, sample->depth.mm, &dive->cylinder[gasidx].gasmix, sample->po2);
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psample = sample;
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t0 = t1;
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}
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return tissue_tolerance;
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}
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/* if a default cylinder is set, use that */
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void fill_default_cylinder(cylinder_t *cyl)
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{
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const char *cyl_name = prefs.default_cylinder;
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struct tank_info_t *ti = tank_info;
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if (!cyl_name)
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return;
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while (ti->name != NULL) {
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if (strcmp(ti->name, cyl_name) == 0)
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break;
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ti++;
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}
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if (ti->name == NULL)
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/* didn't find it */
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return;
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cyl->type.description = strdup(ti->name);
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if (ti->ml) {
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cyl->type.size.mliter = ti->ml;
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cyl->type.workingpressure.mbar = ti->bar * 1000;
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} else {
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cyl->type.workingpressure.mbar = psi_to_mbar(ti->psi);
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if (ti->psi)
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cyl->type.size.mliter = cuft_to_l(ti->cuft) * 1000 / bar_to_atm(psi_to_bar(ti->psi));
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}
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cyl->depth.mm = 1600 * 1000 / O2_IN_AIR * 10 - 10000; // MOD of air
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}
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/* make sure that the gas we are switching to is represented in our
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* list of cylinders */
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static int verify_gas_exists(struct dive *dive, int o2, int he)
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{
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int i;
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struct gasmix *mix;
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struct gasmix mix_in;
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cylinder_t *cyl;
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mix_in.o2.permille = o2;
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mix_in.he.permille = he;
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for (i = 0; i < MAX_CYLINDERS; i++) {
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cyl = dive->cylinder + i;
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mix = &cyl->gasmix;
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if (cylinder_nodata(cyl))
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break;
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if (gasmix_distance(mix, &mix_in) < 200)
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return i;
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}
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fprintf(stderr, "this gas (%d/%d) should have been on the cylinder list\nThings will fail now\n", o2, he);
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return -1;
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}
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/* calculate the new end pressure of the cylinder, based on its current end pressure and the
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* latest segment. */
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static void update_cylinder_pressure(struct dive *d, int old_depth, int new_depth, int duration, int sac, cylinder_t *cyl)
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{
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volume_t gas_used;
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pressure_t delta_p;
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depth_t mean_depth;
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if (!cyl || !cyl->type.size.mliter)
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return;
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mean_depth.mm = (old_depth + new_depth) / 2;
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gas_used.mliter = depth_to_atm(mean_depth.mm, d) * sac / 60 * duration;
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delta_p.mbar = gas_used.mliter * 1000.0 / cyl->type.size.mliter;
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cyl->end.mbar -= delta_p.mbar;
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}
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static struct dive *create_dive_from_plan(struct diveplan *diveplan, struct dive *master_dive)
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{
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struct dive *dive;
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struct divedatapoint *dp;
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struct divecomputer *dc;
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struct sample *sample;
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cylinder_t *cyl;
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int oldo2, oldhe;
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int oldpo2 = 0;
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int lasttime = 0;
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if (!diveplan || !diveplan->dp)
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return NULL;
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#if DEBUG_PLAN & 4
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printf("in create_dive_from_plan\n");
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dump_plan(diveplan);
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#endif
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dive = alloc_dive();
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dive->when = diveplan->when;
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dive->dc.surface_pressure.mbar = diveplan->surface_pressure;
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dc = &dive->dc;
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dc->model = "planned dive"; /* do not translate here ! */
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dp = diveplan->dp;
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copy_cylinders(master_dive, dive);
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/* reset the end pressure values and start with the gas on the first cylinder */
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reset_cylinders(master_dive);
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cyl = &master_dive->cylinder[0];
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oldhe = cyl->gasmix.he.permille;
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oldo2 = cyl->gasmix.o2.permille;
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sample = prepare_sample(dc);
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sample->po2 = dp->po2;
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finish_sample(dc);
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while (dp) {
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int o2 = dp->o2, he = dp->he;
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int po2 = dp->po2;
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int time = dp->time;
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int depth = dp->depth;
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if (time == 0) {
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/* special entries that just inform the algorithm about
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* additional gases that are available */
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if (verify_gas_exists(dive, o2, he) < 0)
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goto gas_error_exit;
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dp = dp->next;
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continue;
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}
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if (!o2 && !he) {
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o2 = oldo2;
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he = oldhe;
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}
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/* Check for SetPoint change */
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if (oldpo2 != po2) {
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if (lasttime)
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/* this is a bad idea - we should get a different SAMPLE_EVENT type
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* reserved for this in libdivecomputer... overloading SMAPLE_EVENT_PO2
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* with a different meaning will only cause confusion elsewhere in the code */
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add_event(dc, lasttime, SAMPLE_EVENT_PO2, 0, po2, "SP change");
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oldpo2 = po2;
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}
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/* Create new gas, and gas change event if necessary;
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* Sadly, we inherited our gaschange event from libdivecomputer which only
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* support percentage values, so round the entries */
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if (o2 != oldo2 || he != oldhe) {
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int plano2 = (o2 + 5) / 10 * 10;
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int planhe = (he + 5) / 10 * 10;
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int idx;
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if ((idx = verify_gas_exists(dive, plano2, planhe)) < 0)
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goto gas_error_exit;
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add_gas_switch_event(dive, dc, lasttime, idx);
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/* need to insert a last sample for the old gas */
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sample = prepare_sample(dc);
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sample[-1].po2 = po2;
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sample->time.seconds = time - 1;
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sample->depth.mm = depth;
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update_cylinder_pressure(dive, sample[-1].depth.mm, depth, time - sample[-1].time.seconds,
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dp->entered ? diveplan->bottomsac : diveplan->decosac, cyl);
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sample->cylinderpressure.mbar = cyl->end.mbar;
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finish_sample(dc);
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cyl = &dive->cylinder[idx];
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oldo2 = o2;
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oldhe = he;
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}
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/* Create sample */
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sample = prepare_sample(dc);
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/* set po2 at beginning of this segment */
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/* and keep it valid for last sample - where it likely doesn't matter */
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sample[-1].po2 = po2;
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sample->po2 = po2;
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sample->time.seconds = time;
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sample->depth.mm = depth;
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update_cylinder_pressure(dive, sample[-1].depth.mm, depth, time - sample[-1].time.seconds,
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dp->entered ? diveplan->bottomsac : diveplan->decosac, cyl);
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sample->cylinderpressure.mbar = cyl->end.mbar;
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finish_sample(dc);
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lasttime = time;
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dp = dp->next;
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}
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if (dc->samples <= 1) {
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/* not enough there yet to create a dive - most likely the first time is missing */
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free(dive);
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dive = NULL;
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}
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#if DEBUG_PLAN & 32
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if (dive)
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save_dive(stdout, dive);
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#endif
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return dive;
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gas_error_exit:
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free(dive);
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report_error(translate("gettextFromC", "Too many gas mixes"));
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return NULL;
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}
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void free_dps(struct divedatapoint *dp)
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{
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while (dp) {
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struct divedatapoint *ndp = dp->next;
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free(dp);
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dp = ndp;
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}
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}
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struct divedatapoint *create_dp(int time_incr, int depth, int o2, int he, int po2)
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{
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struct divedatapoint *dp;
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dp = malloc(sizeof(struct divedatapoint));
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dp->time = time_incr;
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dp->depth = depth;
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dp->o2 = o2;
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dp->he = he;
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dp->po2 = po2;
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dp->entered = false;
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dp->next = NULL;
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return dp;
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}
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struct divedatapoint *get_nth_dp(struct diveplan *diveplan, int idx)
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{
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struct divedatapoint **ldpp, *dp = diveplan->dp;
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int i = 0;
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ldpp = &diveplan->dp;
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while (dp && i++ < idx) {
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ldpp = &dp->next;
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dp = dp->next;
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}
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while (i++ <= idx) {
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*ldpp = dp = create_dp(0, 0, 0, 0, 0);
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ldpp = &((*ldpp)->next);
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}
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return dp;
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}
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void add_to_end_of_diveplan(struct diveplan *diveplan, struct divedatapoint *dp)
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{
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struct divedatapoint **lastdp = &diveplan->dp;
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struct divedatapoint *ldp = *lastdp;
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int lasttime = 0;
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while (*lastdp) {
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ldp = *lastdp;
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if (ldp->time > lasttime)
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lasttime = ldp->time;
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lastdp = &(*lastdp)->next;
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}
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*lastdp = dp;
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if (ldp && dp->time != 0)
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dp->time += lasttime;
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}
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struct divedatapoint *plan_add_segment(struct diveplan *diveplan, int duration, int depth, int o2, int he, int po2, bool entered)
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{
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struct divedatapoint *dp = create_dp(duration, depth, o2, he, po2);
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dp->entered = entered;
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add_to_end_of_diveplan(diveplan, dp);
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return (dp);
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}
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struct gaschanges {
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int depth;
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int gasidx;
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};
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static struct gaschanges *analyze_gaslist(struct diveplan *diveplan, struct dive *dive, int *gaschangenr, int depth, int *asc_cylinder)
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{
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int nr = 0;
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struct gaschanges *gaschanges = NULL;
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struct divedatapoint *dp = diveplan->dp;
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int best_depth = dive->cylinder[*asc_cylinder].depth.mm;
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while (dp) {
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if (dp->time == 0) {
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if (dp->depth <= depth) {
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int i = 0;
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nr++;
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gaschanges = realloc(gaschanges, nr * sizeof(struct gaschanges));
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while (i < nr - 1) {
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if (dp->depth < gaschanges[i].depth) {
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memmove(gaschanges + i + 1, gaschanges + i, (nr - i - 1) * sizeof(struct gaschanges));
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break;
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}
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i++;
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}
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gaschanges[i].depth = dp->depth;
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gaschanges[i].gasidx = get_gasidx(dive, dp->o2, dp->he);
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assert(gaschanges[i].gasidx != -1);
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} else {
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/* is there a better mix to start deco? */
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if (dp->depth < best_depth) {
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best_depth = dp->depth;
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*asc_cylinder = get_gasidx(dive, dp->o2, dp->he);
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}
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}
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}
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dp = dp->next;
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}
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*gaschangenr = nr;
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#if DEBUG_PLAN & 16
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for (nr = 0; nr < *gaschangenr; nr++)
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printf("gaschange nr %d: @ %5.2lfm gasidx %d (%d/%d)\n", nr, gaschanges[nr].depth / 1000.0,
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gaschanges[nr].gasidx, (get_o2(&dive->cylinder[gaschanges[nr].gasidx].gasmix) + 5) / 10,
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(get_he(&dive->cylinder[gaschanges[nr].gasidx].gasmix) + 5) / 10);
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#endif
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return gaschanges;
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}
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/* sort all the stops into one ordered list */
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static unsigned int *sort_stops(int *dstops, int dnr, struct gaschanges *gstops, int gnr)
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{
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int i, gi, di;
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int total = dnr + gnr;
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int *stoplevels = malloc(total * sizeof(int));
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/* no gaschanges */
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if (gnr == 0) {
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memcpy(stoplevels, dstops, dnr * sizeof(int));
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return stoplevels;
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}
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|
i = total - 1;
|
|
gi = gnr - 1;
|
|
di = dnr - 1;
|
|
while (i >= 0) {
|
|
if (dstops[di] > gstops[gi].depth) {
|
|
stoplevels[i] = dstops[di];
|
|
di--;
|
|
} else if (dstops[di] == gstops[gi].depth) {
|
|
stoplevels[i] = dstops[di];
|
|
di--;
|
|
gi--;
|
|
} else {
|
|
stoplevels[i] = gstops[gi].depth;
|
|
gi--;
|
|
}
|
|
i--;
|
|
if (di < 0) {
|
|
while (gi >= 0)
|
|
stoplevels[i--] = gstops[gi--].depth;
|
|
break;
|
|
}
|
|
if (gi < 0) {
|
|
while (di >= 0)
|
|
stoplevels[i--] = dstops[di--];
|
|
break;
|
|
}
|
|
}
|
|
while (i >= 0)
|
|
stoplevels[i--] = 0;
|
|
|
|
#if DEBUG_PLAN & 16
|
|
int k;
|
|
for (k = gnr + dnr - 1; k >= 0; k--) {
|
|
printf("stoplevel[%d]: %5.2lfm\n", k, stoplevels[k] / 1000.0);
|
|
if (stoplevels[k] == 0)
|
|
break;
|
|
}
|
|
#endif
|
|
return stoplevels;
|
|
}
|
|
|
|
static void add_plan_to_notes(struct diveplan *diveplan, struct dive *dive)
|
|
{
|
|
char buffer[20000];
|
|
int consumption[MAX_CYLINDERS] = { 0, };
|
|
int len, gasidx, lastdepth = 0, lasttime = 0;
|
|
struct divedatapoint *dp = diveplan->dp;
|
|
int o2, he;
|
|
|
|
if (!dp)
|
|
return;
|
|
|
|
snprintf(buffer, sizeof(buffer),
|
|
translate("gettextFromC", "%s\nSubsurface dive plan\nbased on GFlow = %d and GFhigh = %d\n\n"),
|
|
translate("gettextFromC", "DISCLAIMER / WARNING: THIS IS A NEW IMPLEMENTATION OF THE BUHLMANN "
|
|
"ALGORITHM AND A DIVE PLANNER IMPLEMENTION BASED ON THAT WHICH HAS "
|
|
"RECEIVED ONLY A LIMITED AMOUNT OF TESTING. WE STRONGLY RECOMMEND NOT TO "
|
|
"PLAN DIVES SIMPLY BASED ON THE RESULTS GIVEN HERE."),
|
|
diveplan->gflow, diveplan->gfhigh);
|
|
/* we start with gas 0, then check if that was changed */
|
|
o2 = get_o2(&dive->cylinder[0].gasmix);
|
|
he = get_he(&dive->cylinder[0].gasmix);
|
|
do {
|
|
const char *depth_unit;
|
|
char gas[64];
|
|
double depthvalue;
|
|
int decimals;
|
|
double used;
|
|
int newo2 = o2, newhe = he;
|
|
struct divedatapoint *nextdp;
|
|
|
|
if (dp->time == 0)
|
|
continue;
|
|
depthvalue = get_depth_units(dp->depth, &decimals, &depth_unit);
|
|
/* do we change gas after this segment? We need to look at the gas
|
|
* for the next segment (that isn't just a record of available gas !!)
|
|
* to find out */
|
|
nextdp = dp->next;
|
|
while (nextdp && nextdp->time == 0)
|
|
nextdp = nextdp->next;
|
|
if (nextdp) {
|
|
newo2 = nextdp->o2;
|
|
newhe = nextdp->he;
|
|
if (newhe == 0 && newo2 == 0) {
|
|
/* same as last segment */
|
|
newo2 = o2;
|
|
newhe = he;
|
|
}
|
|
}
|
|
/* do we want to skip this leg as it is devoid of anything useful? */
|
|
if (!dp->entered && o2 == newo2 && he == newhe && nextdp && dp->depth != lastdepth && nextdp->depth != dp->depth)
|
|
continue;
|
|
get_gas_string(o2, he, gas, sizeof(gas));
|
|
gasidx = get_gasidx(dive, o2, he);
|
|
len = strlen(buffer);
|
|
if (dp->depth != lastdepth)
|
|
snprintf(buffer + len, sizeof(buffer) - len, translate("gettextFromC", "Transition to %.*f %s in %d:%02d min - runtime %d:%02u on %s\n"),
|
|
decimals, depthvalue, depth_unit,
|
|
FRACTION(dp->time - lasttime, 60),
|
|
FRACTION(dp->time, 60),
|
|
gas);
|
|
else
|
|
snprintf(buffer + len, sizeof(buffer) - len, translate("gettextFromC", "Stay at %.*f %s for %d:%02d min - runtime %d:%02u on %s\n"),
|
|
decimals, depthvalue, depth_unit,
|
|
FRACTION(dp->time - lasttime, 60),
|
|
FRACTION(dp->time, 60),
|
|
gas);
|
|
get_gas_string(newo2, newhe, gas, sizeof(gas));
|
|
if (o2 != newo2 || he != newhe) {
|
|
len = strlen(buffer);
|
|
snprintf(buffer + len, sizeof(buffer) - len, translate("gettextFromC", "Switch gas to %s\n"), gas);
|
|
}
|
|
o2 = newo2;
|
|
he = newhe;
|
|
lasttime = dp->time;
|
|
lastdepth = dp->depth;
|
|
} while ((dp = dp->next) != NULL);
|
|
len = strlen(buffer);
|
|
snprintf(buffer + len, sizeof(buffer) - len, translate("gettextFromC", "Gas consumption:\n"));
|
|
for (gasidx = 0; gasidx < MAX_CYLINDERS; gasidx++) {
|
|
double volume;
|
|
const char *unit;
|
|
char gas[64];
|
|
cylinder_t *cyl = &dive->cylinder[gasidx];
|
|
if (cylinder_none(cyl))
|
|
break;
|
|
int consumed = mbar_to_atm(cyl->start.mbar - cyl->end.mbar) * cyl->type.size.mliter;
|
|
len = strlen(buffer);
|
|
volume = get_volume_units(consumed, NULL, &unit);
|
|
get_gas_string(get_o2(&cyl->gasmix), get_he(&cyl->gasmix), gas, sizeof(gas));
|
|
snprintf(buffer + len, sizeof(buffer) - len, translate("gettextFromC", "%.0f%s of %s\n"), volume, unit, gas);
|
|
}
|
|
dive->notes = strdup(buffer);
|
|
}
|
|
|
|
int ascend_velocity(int depth, int avg_depth, int bottom_time)
|
|
{
|
|
/* We need to make this configurable */
|
|
|
|
/* As an example (and possibly reasonable default) this is the Tech 1 provedure according
|
|
* to http://www.globalunderwaterexplorers.org/files/Standards_and_Procedures/SOP_Manual_Ver2.0.2.pdf */
|
|
|
|
if (depth <= 6000)
|
|
return 1000 / 60;
|
|
|
|
if (depth * 4 > avg_depth *3)
|
|
return 9000 / 60;
|
|
else
|
|
return 6000 / 60;
|
|
}
|
|
|
|
void plan(struct diveplan *diveplan, char **cached_datap, struct dive **divep, struct dive *master_dive, bool add_deco)
|
|
{
|
|
struct dive *dive;
|
|
struct sample *sample;
|
|
int o2, he, po2;
|
|
int transitiontime, gi;
|
|
int current_cylinder;
|
|
unsigned int stopidx;
|
|
int depth;
|
|
double tissue_tolerance;
|
|
struct gaschanges *gaschanges = NULL;
|
|
int gaschangenr;
|
|
int *stoplevels = NULL;
|
|
char *trial_cache = NULL;
|
|
bool stopping = false;
|
|
bool clear_to_ascend;
|
|
int clock, previous_point_time;
|
|
int avg_depth, bottom_time;
|
|
int last_ascend_rate;
|
|
int best_first_ascend_cylinder;
|
|
|
|
set_gf(diveplan->gflow, diveplan->gfhigh, default_prefs.gf_low_at_maxdepth);
|
|
if (!diveplan->surface_pressure)
|
|
diveplan->surface_pressure = SURFACE_PRESSURE;
|
|
if (*divep)
|
|
delete_single_dive(dive_table.nr - 1);
|
|
*divep = dive = create_dive_from_plan(diveplan, master_dive);
|
|
if (!dive)
|
|
return;
|
|
record_dive(dive);
|
|
|
|
/* Let's start at the last 'sample', i.e. the last manually entered waypoint. */
|
|
sample = &dive->dc.sample[dive->dc.samples - 1];
|
|
/* we start with gas 0, then check if that was changed */
|
|
o2 = get_o2(&dive->cylinder[0].gasmix);
|
|
he = get_he(&dive->cylinder[0].gasmix);
|
|
get_gas_from_events(&dive->dc, sample->time.seconds, &o2, &he);
|
|
po2 = dive->dc.sample[dive->dc.samples - 1].po2;
|
|
if ((current_cylinder = get_gasidx(dive, o2, he)) == -1) {
|
|
report_error(translate("gettextFromC", "Can't find gas %d/%d"), (o2 + 5) / 10, (he + 5) / 10);
|
|
current_cylinder = 0;
|
|
}
|
|
depth = dive->dc.sample[dive->dc.samples - 1].depth.mm;
|
|
avg_depth = average_depth(diveplan);
|
|
last_ascend_rate = ascend_velocity(depth, avg_depth, bottom_time);
|
|
|
|
/* if all we wanted was the dive just get us back to the surface */
|
|
if (!add_deco) {
|
|
transitiontime = depth / 75; /* this still needs to be made configurable */
|
|
plan_add_segment(diveplan, transitiontime, 0, o2, he, po2, false);
|
|
/* re-create the dive */
|
|
delete_single_dive(dive_table.nr - 1);
|
|
*divep = dive = create_dive_from_plan(diveplan, master_dive);
|
|
if (dive)
|
|
record_dive(dive);
|
|
return;
|
|
}
|
|
|
|
tissue_tolerance = tissue_at_end(dive, cached_datap);
|
|
|
|
#if DEBUG_PLAN & 4
|
|
printf("gas %d/%d\n", o2, he);
|
|
printf("depth %5.2lfm ceiling %5.2lfm\n", depth / 1000.0, ceiling / 1000.0);
|
|
#endif
|
|
|
|
best_first_ascend_cylinder = current_cylinder;
|
|
/* Find the gases available for deco */
|
|
gaschanges = analyze_gaslist(diveplan, dive, &gaschangenr, depth, &best_first_ascend_cylinder);
|
|
/* Find the first potential decostopdepth above current depth */
|
|
for (stopidx = 0; stopidx < sizeof(decostoplevels) / sizeof(int); stopidx++)
|
|
if (decostoplevels[stopidx] >= depth)
|
|
break;
|
|
if (stopidx > 0)
|
|
stopidx--;
|
|
/* Stoplevels are either depths of gas changes or potential deco stop depths. */
|
|
stoplevels = sort_stops(decostoplevels, stopidx + 1, gaschanges, gaschangenr);
|
|
stopidx += gaschangenr;
|
|
|
|
/* Keep time during the ascend */
|
|
bottom_time = clock = previous_point_time = dive->dc.sample[dive->dc.samples - 1].time.seconds;
|
|
gi = gaschangenr - 1;
|
|
|
|
if (best_first_ascend_cylinder != current_cylinder) {
|
|
stopping = true;
|
|
|
|
current_cylinder = best_first_ascend_cylinder;
|
|
o2 = get_o2(&dive->cylinder[current_cylinder].gasmix);
|
|
he = get_he(&dive->cylinder[current_cylinder].gasmix);
|
|
#if DEBUG_PLAN & 16
|
|
printf("switch to gas %d (%d/%d) @ %5.2lfm\n", best_first_ascend_cylinder,
|
|
(o2 + 5) / 10, (he + 5) / 10, gaschanges[best_first_ascend_cylinder].depth / 1000.0);
|
|
#endif
|
|
|
|
}
|
|
while (1) {
|
|
/* We will break out when we hit the surface */
|
|
do {
|
|
/* Ascend to next stop depth */
|
|
int deltad = ascend_velocity(depth, avg_depth, bottom_time) * TIMESTEP;
|
|
if (ascend_velocity(depth, avg_depth, bottom_time) != last_ascend_rate) {
|
|
plan_add_segment(diveplan, clock - previous_point_time, depth, o2, he, po2, false);
|
|
previous_point_time = clock;
|
|
stopping = false;
|
|
last_ascend_rate = ascend_velocity(depth, avg_depth, bottom_time);
|
|
}
|
|
if (depth - deltad < stoplevels[stopidx])
|
|
deltad = depth - stoplevels[stopidx];
|
|
|
|
tissue_tolerance = add_segment(depth_to_mbar(depth, dive) / 1000.0, &dive->cylinder[current_cylinder].gasmix, TIMESTEP, po2, dive);
|
|
clock += TIMESTEP;
|
|
depth -= deltad;
|
|
} while (depth > stoplevels[stopidx]);
|
|
|
|
if (depth <= 0)
|
|
break; /* We are at the surface */
|
|
|
|
|
|
if (gi >= 0 && stoplevels[stopidx] == gaschanges[gi].depth) {
|
|
/* We have reached a gas change.
|
|
* Record this in the dive plan */
|
|
plan_add_segment(diveplan, clock - previous_point_time, depth, o2, he, po2, false);
|
|
previous_point_time = clock;
|
|
stopping = true;
|
|
|
|
current_cylinder = gaschanges[gi].gasidx;
|
|
o2 = get_o2(&dive->cylinder[current_cylinder].gasmix);
|
|
he = get_he(&dive->cylinder[current_cylinder].gasmix);
|
|
#if DEBUG_PLAN & 16
|
|
printf("switch to gas %d (%d/%d) @ %5.2lfm\n", gaschanges[gi].gasidx,
|
|
(o2 + 5) / 10, (he + 5) / 10, gaschanges[gi].depth / 1000.0);
|
|
#endif
|
|
gi--;
|
|
}
|
|
|
|
--stopidx;
|
|
|
|
/* Save the current state and try to ascend to the next stopdepth */
|
|
int trial_depth = depth;
|
|
cache_deco_state(tissue_tolerance, &trial_cache);
|
|
while(1) {
|
|
/* Check if ascending to next stop is clear, go back and wait if we hit the ceiling on the way */
|
|
clear_to_ascend = true;
|
|
while (trial_depth > stoplevels[stopidx]) {
|
|
int deltad = ascend_velocity(trial_depth, avg_depth, bottom_time) * TIMESTEP;
|
|
tissue_tolerance = add_segment(depth_to_mbar(trial_depth, dive) / 1000.0, &dive->cylinder[current_cylinder].gasmix, TIMESTEP, po2, dive);
|
|
if (deco_allowed_depth(tissue_tolerance, diveplan->surface_pressure / 1000.0, dive, 1) > trial_depth - deltad){
|
|
/* We should have stopped */
|
|
clear_to_ascend = false;
|
|
break;
|
|
}
|
|
trial_depth -= deltad;
|
|
}
|
|
restore_deco_state(trial_cache);
|
|
|
|
if(clear_to_ascend)
|
|
break; /* We did not hit the ceiling */
|
|
|
|
/* Add a minute of deco time and then try again */
|
|
if (!stopping) {
|
|
/* The last segment was an ascend segment.
|
|
* Add a waypoint for start of this deco stop */
|
|
plan_add_segment(diveplan, clock - previous_point_time, depth, o2, he, po2, false);
|
|
previous_point_time = clock;
|
|
stopping = true;
|
|
}
|
|
tissue_tolerance = add_segment(depth_to_mbar(depth, dive) / 1000.0, &dive->cylinder[current_cylinder].gasmix, DECOTIMESTEP, po2, dive);
|
|
cache_deco_state(tissue_tolerance, &trial_cache);
|
|
clock += DECOTIMESTEP;
|
|
trial_depth = depth;
|
|
}
|
|
if (stopping) {
|
|
/* Next we will ascend again. Add a waypoint if we have spend deco time */
|
|
plan_add_segment(diveplan, clock - previous_point_time, depth, o2, he, po2, false);
|
|
previous_point_time = clock;
|
|
stopping = false;
|
|
}
|
|
|
|
}
|
|
|
|
/* We made it to the surface */
|
|
plan_add_segment(diveplan, clock - previous_point_time, 0, o2, he, po2, false);
|
|
delete_single_dive(dive_table.nr - 1);
|
|
*divep = dive = create_dive_from_plan(diveplan, master_dive);
|
|
if (!dive)
|
|
goto error_exit;
|
|
add_plan_to_notes(diveplan, dive);
|
|
|
|
error_exit:
|
|
free(stoplevels);
|
|
free(gaschanges);
|
|
}
|
|
|
|
/*
|
|
* Get a value in tenths (so "10.2" == 102, "9" = 90)
|
|
*
|
|
* Return negative for errors.
|
|
*/
|
|
static int get_tenths(const char *begin, const char **endp)
|
|
{
|
|
char *end;
|
|
int value = strtol(begin, &end, 10);
|
|
|
|
if (begin == end)
|
|
return -1;
|
|
value *= 10;
|
|
|
|
/* Fraction? We only look at the first digit */
|
|
if (*end == '.') {
|
|
end++;
|
|
if (!isdigit(*end))
|
|
return -1;
|
|
value += *end - '0';
|
|
do {
|
|
end++;
|
|
} while (isdigit(*end));
|
|
}
|
|
*endp = end;
|
|
return value;
|
|
}
|
|
|
|
static int get_permille(const char *begin, const char **end)
|
|
{
|
|
int value = get_tenths(begin, end);
|
|
if (value >= 0) {
|
|
/* Allow a percentage sign */
|
|
if (**end == '%')
|
|
++*end;
|
|
}
|
|
return value;
|
|
}
|
|
|
|
int validate_gas(const char *text, int *o2_p, int *he_p)
|
|
{
|
|
int o2, he;
|
|
|
|
if (!text)
|
|
return 0;
|
|
|
|
while (isspace(*text))
|
|
text++;
|
|
|
|
if (!*text)
|
|
return 0;
|
|
|
|
if (!strcasecmp(text, translate("gettextFromC", "air"))) {
|
|
o2 = O2_IN_AIR;
|
|
he = 0;
|
|
text += strlen(translate("gettextFromC", "air"));
|
|
} else if (!strncasecmp(text, translate("gettextFromC", "ean"), 3)) {
|
|
o2 = get_permille(text + 3, &text);
|
|
he = 0;
|
|
} else {
|
|
o2 = get_permille(text, &text);
|
|
he = 0;
|
|
if (*text == '/')
|
|
he = get_permille(text + 1, &text);
|
|
}
|
|
|
|
/* We don't want any extra crud */
|
|
while (isspace(*text))
|
|
text++;
|
|
if (*text)
|
|
return 0;
|
|
|
|
/* Validate the gas mix */
|
|
if (*text || o2 < 1 || o2 > 1000 || he < 0 || o2 + he > 1000)
|
|
return 0;
|
|
|
|
/* Let it rip */
|
|
*o2_p = o2;
|
|
*he_p = he;
|
|
return 1;
|
|
}
|
|
|
|
int validate_po2(const char *text, int *mbar_po2)
|
|
{
|
|
int po2;
|
|
|
|
if (!text)
|
|
return 0;
|
|
|
|
po2 = get_tenths(text, &text);
|
|
if (po2 < 0)
|
|
return 0;
|
|
|
|
while (isspace(*text))
|
|
text++;
|
|
|
|
while (isspace(*text))
|
|
text++;
|
|
if (*text)
|
|
return 0;
|
|
|
|
*mbar_po2 = po2 * 100;
|
|
return 1;
|
|
}
|