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63d98138b4
With very low values of GFhigh and setting the last stop depth to 6m it is possible to create dives that need infintie decompression time. This ends deco after 48h and replaces the dive plan with an error message. Signed-off-by: Robert C. Helling <helling@atdotde.de> Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
1056 lines
32 KiB
C
1056 lines
32 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 3 /* 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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bool plan_verbatim = false, plan_display_runtime = true, plan_display_duration = false, plan_display_transitions = false;
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const char *disclaimer;
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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, get_o2(&dp->gasmix), get_he(&dp->gasmix));
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dp = dp->next;
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}
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}
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#endif
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bool diveplan_empty(struct diveplan *diveplan)
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{
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struct divedatapoint *dp;
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if (!diveplan || !diveplan->dp)
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return true;
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dp = diveplan->dp;
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while (dp) {
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if (dp->time)
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return false;
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dp = dp->next;
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}
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return true;
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}
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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 set_verbatim(bool verbatim)
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{
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plan_verbatim = verbatim;
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}
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void set_display_runtime(bool display)
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{
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plan_display_runtime = display;
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}
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void set_display_duration(bool display)
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{
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plan_display_duration = display;
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}
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void set_display_transitions(bool display)
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{
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plan_display_transitions = display;
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}
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/* get the gas at a certain time during the dive */
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void get_gas_at_time(struct dive *dive, struct divecomputer *dc, duration_t time, struct gasmix *gas)
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{
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// we always start with the first gas, so that's our gas
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// unless an event tells us otherwise
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struct event *event = dc->events;
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*gas = dive->cylinder[0].gasmix;
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while (event && event->time.seconds <= time.seconds) {
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if (!strcmp(event->name, "gaschange")) {
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int cylinder_idx = get_cylinder_index(dive, event);
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*gas = dive->cylinder[cylinder_idx].gasmix;
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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, struct gasmix *mix)
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{
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int gasidx = -1;
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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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double interpolate_transition(struct dive *dive, duration_t t0, duration_t t1, depth_t d0, depth_t d1, const struct gasmix *gasmix, o2pressure_t po2)
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{
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int j;
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double tissue_tolerance = 0.0;
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for (j = t0.seconds; j < t1.seconds; j++) {
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int depth = interpolate(d0.mm, d1.mm, j - t0.seconds, t1.seconds - t0.seconds);
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tissue_tolerance = add_segment(depth_to_mbar(depth, dive) / 1000.0, gasmix, 1, po2.mbar, 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;
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depth_t lastdepth = {};
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duration_t t0 = {}, t1 = {};
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double tissue_tolerance;
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struct gasmix gas;
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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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for (i = 0; i < dc->samples; i++, sample++) {
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t1 = sample->time;
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get_gas_at_time(dive, dc, t0, &gas);
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if (i > 0)
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lastdepth = psample->depth;
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tissue_tolerance = interpolate_transition(dive, t0, t1, lastdepth, sample->depth, &gas, 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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pressure_t pO2 = {.mbar = 1600};
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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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// MOD of air
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cyl->depth = gas_mod(&cyl->gasmix, pO2, 1);
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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 gasmix mix_in)
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{
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int i;
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cylinder_t *cyl;
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for (i = 0; i < MAX_CYLINDERS; i++) {
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cyl = displayed_dive.cylinder + i;
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if (cylinder_nodata(cyl))
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continue;
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if (gasmix_distance(&cyl->gasmix, &mix_in) < 200)
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return i;
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}
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fprintf(stderr, "this gas %s should have been on the cylinder list\nThings will fail now\n", gasname(&mix_in));
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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, bool in_deco)
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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)
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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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cyl->gas_used.mliter += gas_used.mliter;
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if (in_deco)
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cyl->deco_gas_used.mliter += gas_used.mliter;
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if (cyl->type.size.mliter) {
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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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}
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/* simply overwrite the data in the displayed_dive
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* return false if something goes wrong */
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static void create_dive_from_plan(struct diveplan *diveplan, bool track_gas)
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{
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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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struct gasmix oldgasmix;
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struct event *ev;
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cylinder_t *cyl;
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int oldpo2 = 0;
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int lasttime = 0;
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int lastdepth = 0;
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if (!diveplan || !diveplan->dp)
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return;
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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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// reset the cylinders and clear out the samples and events of the
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// displayed dive so we can restart
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reset_cylinders(&displayed_dive, track_gas);
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dc = &displayed_dive.dc;
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dc->when = displayed_dive.when = diveplan->when;
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free(dc->sample);
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dc->sample = NULL;
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dc->samples = 0;
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dc->alloc_samples = 0;
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while ((ev = dc->events)) {
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dc->events = dc->events->next;
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free(ev);
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}
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dp = diveplan->dp;
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cyl = &displayed_dive.cylinder[0];
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oldgasmix = cyl->gasmix;
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sample = prepare_sample(dc);
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sample->po2.mbar = dp->po2;
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if (track_gas && cyl->type.workingpressure.mbar)
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sample->cylinderpressure.mbar = cyl->end.mbar;
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finish_sample(dc);
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while (dp) {
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struct gasmix gasmix = dp->gasmix;
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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(gasmix) < 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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/* 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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/* Make sure we have the new gas, and create a gas change event */
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if (gasmix_distance(&gasmix, &oldgasmix) > 0) {
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int idx;
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if ((idx = verify_gas_exists(gasmix)) < 0)
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goto gas_error_exit;
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/* need to insert a first sample for the new gas */
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add_gas_switch_event(&displayed_dive, dc, lasttime + 1, idx);
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cyl = &displayed_dive.cylinder[idx];
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sample = prepare_sample(dc);
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sample[-1].po2.mbar = po2;
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sample->time.seconds = lasttime + 1;
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sample->depth.mm = lastdepth;
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if (track_gas && cyl->type.workingpressure.mbar)
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sample->cylinderpressure.mbar = cyl->sample_end.mbar;
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finish_sample(dc);
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oldgasmix = gasmix;
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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.mbar = po2;
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sample->po2.mbar = po2;
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sample->time.seconds = lasttime = time;
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sample->depth.mm = lastdepth = depth;
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if (track_gas) {
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update_cylinder_pressure(&displayed_dive, sample[-1].depth.mm, depth, time - sample[-1].time.seconds,
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dp->entered ? diveplan->bottomsac : diveplan->decosac, cyl, !dp->entered);
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if (cyl->type.workingpressure.mbar)
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sample->cylinderpressure.mbar = cyl->end.mbar;
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}
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finish_sample(dc);
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dp = dp->next;
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}
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#if DEBUG_PLAN & 32
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save_dive(stdout, &displayed_dive);
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#endif
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return;
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gas_error_exit:
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report_error(translate("gettextFromC", "Too many gas mixes"));
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return;
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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, struct gasmix gasmix, 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->gasmix = gasmix;
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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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struct gasmix air = { };
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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, air, 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, struct gasmix gasmix, int po2, bool entered)
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{
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struct divedatapoint *dp = create_dp(duration, depth, gasmix, 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, int *gaschangenr, int depth, int *asc_cylinder)
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{
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struct gasmix gas;
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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 = displayed_dive.cylinder[*asc_cylinder].depth.mm;
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while (dp) {
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if (dp->time == 0) {
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gas = dp->gasmix;
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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(&displayed_dive, &gas);
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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(&displayed_dive, &gas);
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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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int idx = gaschanges[nr].gasidx;
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printf("gaschange nr %d: @ %5.2lfm gasidx %d (%s)\n", nr, gaschanges[nr].depth / 1000.0,
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idx, gasname(&displayed_dive.cylinder[idx].gasmix));
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}
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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;
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gi = gnr - 1;
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di = dnr - 1;
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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, bool show_disclaimer, int error)
|
|
{
|
|
char buffer[20000], temp[1000];
|
|
int len, lastdepth = 0, lasttime = 0;
|
|
struct divedatapoint *dp = diveplan->dp;
|
|
bool gaschange = !plan_verbatim;
|
|
struct divedatapoint *nextdp = NULL;
|
|
|
|
disclaimer = 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.");
|
|
|
|
if (!dp)
|
|
return;
|
|
|
|
if (error) {
|
|
snprintf(temp, sizeof(temp),
|
|
translate("gettextFromC", "Decompression calculation aborted due to excessive time"));
|
|
snprintf(buffer, sizeof(buffer), "<span style='color: red;'>%s </span> %s<br>",
|
|
translate("gettextFromC", "Warning:"), temp);
|
|
dive->notes = strdup(buffer);
|
|
return;
|
|
}
|
|
|
|
len = show_disclaimer ? snprintf(buffer, sizeof(buffer), "<div><b>%s<b></div><br>", disclaimer) : 0;
|
|
snprintf(temp, sizeof(temp), translate("gettextFromC", "based on GFlow = %d and GFhigh = %d"),
|
|
diveplan->gflow, diveplan->gfhigh);
|
|
len += snprintf(buffer + len, sizeof(buffer) - len, "<div><b>%s</b><br>%s</div><br>",
|
|
translate("gettextFromC", "Subsurface dive plan"), temp);
|
|
|
|
if (!plan_verbatim) {
|
|
len += snprintf(buffer + len, sizeof(buffer) - len, "<div><table><thead><tr><th>%s</th>",
|
|
translate("gettextFromC", "depth"));
|
|
if (plan_display_runtime)
|
|
len += snprintf(buffer + len, sizeof(buffer) - len, "<th style='padding-left: 10px;'>%s</th>",
|
|
translate("gettextFromC", "runtime"));
|
|
if (plan_display_duration)
|
|
len += snprintf(buffer + len, sizeof(buffer) - len, "<th style='padding-left: 10px;'>%s</th>",
|
|
translate("gettextFromC", "duration"));
|
|
len += snprintf(buffer + len, sizeof(buffer) - len,
|
|
"<th style='padding-left: 10px; float: left;'>%s</th></tr></thead><tbody style='float: left;'>",
|
|
translate("gettextFromC", "gas"));
|
|
}
|
|
do {
|
|
struct gasmix gasmix, newgasmix = {};
|
|
const char *depth_unit;
|
|
double depthvalue;
|
|
int decimals;
|
|
|
|
if (dp->time == 0)
|
|
continue;
|
|
gasmix = dp->gasmix;
|
|
depthvalue = get_depth_units(dp->depth, &decimals, &depth_unit);
|
|
/* analyze the dive points ahead */
|
|
nextdp = dp->next;
|
|
while (nextdp && nextdp->time == 0)
|
|
nextdp = nextdp->next;
|
|
if (nextdp)
|
|
newgasmix = nextdp->gasmix;
|
|
/* do we want to skip this leg as it is devoid of anything useful? */
|
|
if (!dp->entered &&
|
|
gasmix_distance(&gasmix, &newgasmix) == 0 &&
|
|
nextdp &&
|
|
dp->depth != lastdepth &&
|
|
nextdp->depth != dp->depth)
|
|
continue;
|
|
if (dp->time - lasttime < 10 && !(gaschange && dp->next && dp->depth != dp->next->depth))
|
|
continue;
|
|
|
|
len = strlen(buffer);
|
|
if (nextdp && gasmix_distance(&gasmix, &newgasmix))
|
|
gaschange = true;
|
|
if (plan_verbatim) {
|
|
if (dp->depth != lastdepth) {
|
|
if (plan_display_transitions || dp->entered || !dp->next || (gaschange && dp->next && dp->depth != nextdp->depth)) {
|
|
snprintf(temp, sizeof(temp), translate("gettextFromC", "Transition to %.*f %s in %d:%02d min - runtime %d:%02u on %s"),
|
|
decimals, depthvalue, depth_unit,
|
|
FRACTION(dp->time - lasttime, 60),
|
|
FRACTION(dp->time, 60),
|
|
gasname(&gasmix));
|
|
len += snprintf(buffer + len, sizeof(buffer) - len, "%s<br>", temp);
|
|
lasttime = dp->time;
|
|
}
|
|
} else {
|
|
if (dp->depth != nextdp->depth) {
|
|
snprintf(temp, sizeof(temp), translate("gettextFromC", "Stay at %.*f %s for %d:%02d min - runtime %d:%02u on %s"),
|
|
decimals, depthvalue, depth_unit,
|
|
FRACTION(dp->time - lasttime, 60),
|
|
FRACTION(dp->time, 60),
|
|
gasname(&gasmix));
|
|
len += snprintf(buffer + len, sizeof(buffer) - len, "%s<br>", temp);
|
|
lasttime = dp->time;
|
|
}
|
|
}
|
|
} else {
|
|
if ((dp->depth == lastdepth && dp->depth != nextdp->depth) || plan_display_transitions || dp->entered || !dp->next || (gaschange && dp->next && dp->depth != nextdp->depth)) {
|
|
snprintf(temp, sizeof(temp), translate("gettextFromC", "%3.0f%s"), depthvalue, depth_unit);
|
|
len += snprintf(buffer + len, sizeof(buffer) - len, "<tr><td style='padding-left: 10px; float: right;'>%s</td>", temp);
|
|
if (plan_display_runtime) {
|
|
snprintf(temp, sizeof(temp), translate("gettextFromC", "%3dmin"), (dp->time + 30) / 60);
|
|
len += snprintf(buffer + len, sizeof(buffer) - len, "<td style='padding-left: 10px; float: right;'>%s</td>", temp);
|
|
}
|
|
if (plan_display_duration) {
|
|
snprintf(temp, sizeof(temp), translate("gettextFromC", "%3dmin"), (dp->time - lasttime + 30) / 60);
|
|
len += snprintf(buffer + len, sizeof(buffer) - len, "<td style='padding-left: 10px; float: right;'>%s</td>", temp);
|
|
}
|
|
if (gaschange) {
|
|
len += snprintf(buffer + len, sizeof(buffer) - len, "<td style='padding-left: 10px; color: red; float: left;'><b>%s</b></td>", gasname(&newgasmix));
|
|
gaschange = false;
|
|
} else {
|
|
len += snprintf(buffer + len, sizeof(buffer) - len, "<td> </td>");
|
|
}
|
|
len += snprintf(buffer + len, sizeof(buffer) - len, "</tr>");
|
|
lasttime = dp->time;
|
|
}
|
|
}
|
|
if (gaschange) {
|
|
// gas switch at this waypoint
|
|
if (plan_verbatim) {
|
|
snprintf(temp, sizeof(temp), translate("gettextFromC", "Switch gas to %s"), gasname(&newgasmix));
|
|
len += snprintf(buffer + len, sizeof(buffer) - len, "%s<br>", temp);
|
|
gaschange = false;
|
|
}
|
|
gasmix = newgasmix;
|
|
}
|
|
lastdepth = dp->depth;
|
|
} while ((dp = nextdp) != NULL);
|
|
len += snprintf(buffer + len, sizeof(buffer) - len, "</tbody></table></div>");
|
|
|
|
dive->cns = 0;
|
|
dive->maxcns = 0;
|
|
update_cylinder_related_info(dive);
|
|
snprintf(temp, sizeof(temp), "%s", translate("gettextFromC", "CNS"));
|
|
len += snprintf(buffer + len, sizeof(buffer) - len, "<div><br>%s: %i%%", temp, dive->cns);
|
|
snprintf(temp, sizeof(temp), "%s", translate("gettextFromC", "OTU"));
|
|
len += snprintf(buffer + len, sizeof(buffer) - len, "<br>%s: %i</div>", temp, dive->otu);
|
|
|
|
snprintf(temp, sizeof(temp), "%s", translate("gettextFromC", "Gas consumption:"));
|
|
len += snprintf(buffer + len, sizeof(buffer) - len, "<div><br>%s<br>", temp);
|
|
for (int gasidx = 0; gasidx < MAX_CYLINDERS; gasidx++) {
|
|
double volume, pressure, deco_volume, deco_pressure;
|
|
const char *unit, *pressure_unit;
|
|
char warning[1000] = "";
|
|
cylinder_t *cyl = &dive->cylinder[gasidx];
|
|
if (cylinder_none(cyl))
|
|
break;
|
|
|
|
volume = get_volume_units(cyl->gas_used.mliter, NULL, &unit);
|
|
deco_volume = get_volume_units(cyl->deco_gas_used.mliter, NULL, &unit);
|
|
if (cyl->type.size.mliter) {
|
|
deco_pressure = get_pressure_units(1000.0 * cyl->deco_gas_used.mliter / cyl->type.size.mliter, &pressure_unit);
|
|
pressure = get_pressure_units(1000.0 * cyl->gas_used.mliter / cyl->type.size.mliter, &pressure_unit);
|
|
/* Warn if the plan uses more gas than is available in a cylinder
|
|
* This only works if we have working pressure for the cylinder
|
|
* 10bar is a made up number - but it seemed silly to pretend you could breathe cylinder down to 0 */
|
|
if (cyl->end.mbar < 10000)
|
|
snprintf(warning, sizeof(warning), " — <span style='color: red;'>%s </span> %s",
|
|
translate("gettextFromC", "Warning:"),
|
|
translate("gettextFromC", "this is more gas than available in the specified cylinder!"));
|
|
else
|
|
if ((float) cyl->end.mbar * cyl->type.size.mliter / 1000.0 < (float) cyl->deco_gas_used.mliter)
|
|
snprintf(warning, sizeof(warning), " — <span style='color: red;'>%s </span> %s",
|
|
translate("gettextFromC", "Warning:"),
|
|
translate("gettextFromC", "not enough reserve for gas sharing on ascent!"));
|
|
|
|
snprintf(temp, sizeof(temp), translate("gettextFromC", "%.0f%s/%.0f%s of %s (%.0f%s/%.0f%s in planned ascent)"), volume, unit, pressure, pressure_unit, gasname(&cyl->gasmix), deco_volume, unit, deco_pressure, pressure_unit);
|
|
} else {
|
|
snprintf(temp, sizeof(temp), translate("gettextFromC", "%.0f%s (%.0f%s during planned ascent) of %s"), volume, unit, deco_volume, unit, gasname(&cyl->gasmix));
|
|
}
|
|
len += snprintf(buffer + len, sizeof(buffer) - len, "%s%s<br>", temp, warning);
|
|
}
|
|
dp = diveplan->dp;
|
|
while (dp) {
|
|
if (dp->time != 0) {
|
|
int pO2 = depth_to_atm(dp->depth, dive) * get_o2(&dp->gasmix);
|
|
|
|
if (pO2 > (dp->entered ? prefs.bottompo2 : prefs.decopo2)) {
|
|
const char *depth_unit;
|
|
int decimals;
|
|
double depth_value = get_depth_units(dp->depth, &decimals, &depth_unit);
|
|
len = strlen(buffer);
|
|
snprintf(temp, sizeof(temp),
|
|
translate("gettextFromC", "high pO₂ value %.2f at %d:%02u with gas %s at depth %.*f %s"),
|
|
pO2 / 1000.0, FRACTION(dp->time, 60), gasname(&dp->gasmix), decimals, depth_value, depth_unit);
|
|
len += snprintf(buffer + len, sizeof(buffer) - len, "<span style='color: red;'>%s </span> %s<br>",
|
|
translate("gettextFromC", "Warning:"), temp);
|
|
}
|
|
}
|
|
dp = dp->next;
|
|
}
|
|
snprintf(buffer + len, sizeof(buffer) - len, "</div>");
|
|
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 * 4 > avg_depth * 3) {
|
|
return prefs.ascrate75;
|
|
} else {
|
|
if (depth * 2 > avg_depth) {
|
|
return prefs.ascrate50;
|
|
} else {
|
|
if (depth > 6000)
|
|
return prefs.ascratestops;
|
|
else
|
|
return prefs.ascratelast6m;
|
|
}
|
|
}
|
|
}
|
|
|
|
int plan(struct diveplan *diveplan, char **cached_datap, bool is_planner, bool show_disclaimer)
|
|
{
|
|
struct sample *sample;
|
|
int po2;
|
|
int transitiontime, gi;
|
|
int current_cylinder;
|
|
unsigned int stopidx;
|
|
int depth;
|
|
double tissue_tolerance = 0.0;
|
|
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 = 0;
|
|
int last_ascend_rate;
|
|
int best_first_ascend_cylinder;
|
|
struct gasmix gas;
|
|
int o2time = 0;
|
|
int breaktime = -1;
|
|
int breakcylinder;
|
|
int error = 0;
|
|
|
|
set_gf(diveplan->gflow, diveplan->gfhigh, prefs.gf_low_at_maxdepth);
|
|
if (!diveplan->surface_pressure)
|
|
diveplan->surface_pressure = SURFACE_PRESSURE;
|
|
create_dive_from_plan(diveplan, is_planner);
|
|
|
|
/* Let's start at the last 'sample', i.e. the last manually entered waypoint. */
|
|
sample = &displayed_dive.dc.sample[displayed_dive.dc.samples - 1];
|
|
|
|
get_gas_at_time(&displayed_dive, &displayed_dive.dc, sample->time, &gas);
|
|
|
|
po2 = displayed_dive.dc.sample[displayed_dive.dc.samples - 1].po2.mbar;
|
|
if ((current_cylinder = get_gasidx(&displayed_dive, &gas)) == -1) {
|
|
report_error(translate("gettextFromC", "Can't find gas %s"), gasname(&gas));
|
|
current_cylinder = 0;
|
|
}
|
|
depth = displayed_dive.dc.sample[displayed_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 (!is_planner) {
|
|
transitiontime = depth / 75; /* this still needs to be made configurable */
|
|
plan_add_segment(diveplan, transitiontime, 0, gas, po2, false);
|
|
create_dive_from_plan(diveplan, is_planner);
|
|
return(error);
|
|
}
|
|
tissue_tolerance = tissue_at_end(&displayed_dive, cached_datap);
|
|
|
|
#if DEBUG_PLAN & 4
|
|
printf("gas %s\n", gasname(&gas));
|
|
printf("depth %5.2lfm \n", depth / 1000.0);
|
|
#endif
|
|
|
|
best_first_ascend_cylinder = current_cylinder;
|
|
/* Find the gases available for deco */
|
|
gaschanges = analyze_gaslist(diveplan, &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 = displayed_dive.dc.sample[displayed_dive.dc.samples - 1].time.seconds;
|
|
gi = gaschangenr - 1;
|
|
|
|
if (best_first_ascend_cylinder != current_cylinder) {
|
|
stopping = true;
|
|
|
|
current_cylinder = best_first_ascend_cylinder;
|
|
gas = displayed_dive.cylinder[current_cylinder].gasmix;
|
|
#if DEBUG_PLAN & 16
|
|
printf("switch to gas %d (%d/%d) @ %5.2lfm\n", best_first_ascend_cylinder,
|
|
(get_o2(&gas) + 5) / 10, (get_he(&gas) + 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, gas, 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, &displayed_dive) / 1000.0,
|
|
&displayed_dive.cylinder[current_cylinder].gasmix,
|
|
TIMESTEP, po2, &displayed_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, gas, po2, false);
|
|
previous_point_time = clock;
|
|
stopping = true;
|
|
|
|
current_cylinder = gaschanges[gi].gasidx;
|
|
gas = displayed_dive.cylinder[current_cylinder].gasmix;
|
|
#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);
|
|
#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;
|
|
if (deltad > trial_depth) /* don't test against depth above surface */
|
|
deltad = trial_depth;
|
|
tissue_tolerance = add_segment(depth_to_mbar(trial_depth, &displayed_dive) / 1000.0,
|
|
&displayed_dive.cylinder[current_cylinder].gasmix,
|
|
TIMESTEP, po2, &displayed_dive);
|
|
if (deco_allowed_depth(tissue_tolerance, diveplan->surface_pressure / 1000.0, &displayed_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, gas, po2, false);
|
|
previous_point_time = clock;
|
|
stopping = true;
|
|
}
|
|
tissue_tolerance = add_segment(depth_to_mbar(depth, &displayed_dive) / 1000.0,
|
|
&displayed_dive.cylinder[current_cylinder].gasmix,
|
|
DECOTIMESTEP, po2, &displayed_dive);
|
|
cache_deco_state(tissue_tolerance, &trial_cache);
|
|
clock += DECOTIMESTEP;
|
|
/* Finish infinite deco */
|
|
if(clock >= 48 * 3600 && depth >= 6000) {
|
|
error = LONGDECO;
|
|
break;
|
|
}
|
|
if (prefs.doo2breaks) {
|
|
if (get_o2(&displayed_dive.cylinder[current_cylinder].gasmix) == 1000) {
|
|
o2time += DECOTIMESTEP;
|
|
if (o2time >= 12 * 60) {
|
|
breaktime = 0;
|
|
breakcylinder = current_cylinder;
|
|
plan_add_segment(diveplan, clock - previous_point_time, depth, gas, po2, false);
|
|
previous_point_time = clock;
|
|
current_cylinder = 0;
|
|
gas = displayed_dive.cylinder[current_cylinder].gasmix;
|
|
}
|
|
} else {
|
|
if (breaktime >= 0) {
|
|
breaktime += DECOTIMESTEP;
|
|
if (breaktime >= 6 * 60) {
|
|
o2time = 0;
|
|
plan_add_segment(diveplan, clock - previous_point_time, depth, gas, po2, false);
|
|
previous_point_time = clock;
|
|
current_cylinder = breakcylinder;
|
|
gas = displayed_dive.cylinder[current_cylinder].gasmix;
|
|
breaktime = -1;
|
|
}
|
|
}
|
|
}
|
|
}
|
|
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, gas, po2, false);
|
|
previous_point_time = clock;
|
|
stopping = false;
|
|
}
|
|
}
|
|
|
|
/* We made it to the surface
|
|
* Create the final dive, add the plan to the notes and fixup some internal
|
|
* data that we need to be there when plotting the dive */
|
|
plan_add_segment(diveplan, clock - previous_point_time, 0, gas, po2, false);
|
|
create_dive_from_plan(diveplan, is_planner);
|
|
add_plan_to_notes(diveplan, &displayed_dive, show_disclaimer, error);
|
|
fixup_dc_duration(&displayed_dive.dc);
|
|
|
|
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, struct gasmix *gas)
|
|
{
|
|
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 */
|
|
gas->o2.permille = o2;
|
|
gas->he.permille = 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;
|
|
}
|