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Comments added to planner

Browse source 
Signed-off-by: Robert C. Helling <helling@atdotde.de>
Signed-off-by: Dirk Hohndel <dirk@hohndel.org>
This commit is contained in:
Robert C. Helling 2014-04-18 16:08:33 +02:00 • committed by Dirk Hohndel
parent e871169e4c
commit cb4daa85c3
2 changed files with 40 additions and 15 deletions
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45
planner.c
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@ -13,6 +13,9 @@
#include "planner.h"
#include "gettext.h"
#define TIMESTEP 1 /* second */
#define DECOTIMESTEP 60 /* seconds. Unit of deco stop times */
int decostoplevels[] = { 0, 3000, 6000, 9000, 12000, 15000, 18000, 21000, 24000, 27000,
30000, 33000, 36000, 39000, 42000, 45000, 48000, 51000, 54000, 57000,
60000, 63000, 66000, 69000, 72000, 75000, 78000, 81000, 84000, 87000,
@ -603,6 +606,7 @@ void plan(struct diveplan *diveplan, char **cached_datap, struct dive **divep, b
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 = dive->cylinder[0].gasmix.o2.permille;
@ -634,28 +638,33 @@ void plan(struct diveplan *diveplan, char **cached_datap, struct dive **divep, b
printf("depth %5.2lfm ceiling %5.2lfm\n", depth / 1000.0, ceiling / 1000.0);
#endif
/* Find the gases available for deco */
gaschanges = analyze_gaslist(diveplan, dive, &gaschangenr, depth);
/* 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 */
clock = previous_point_time = dive->dc.sample[dive->dc.samples - 1].time.seconds;
gi = gaschangenr - 1;
while (1) {
/* We will break out when we hit the surface */
do {
/* Ascend in one second steps to next stop depth */
int deltad = ascend_velocity(depth);
/* Ascend to next stop depth */
assert(deco_allowed_depth(tissue_tolerance, diveplan->surface_pressure / 1000.0, dive, 1) < depth);
int deltad = ascend_velocity(depth) * TIMESTEP;
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, 1, po2, dive);
++clock;
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]);
@ -664,6 +673,8 @@ void plan(struct diveplan *diveplan, char **cached_datap, struct dive **divep, b
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;
@ -678,16 +689,17 @@ void plan(struct diveplan *diveplan, char **cached_datap, struct dive **divep, b
gi--;
}
/* trial ascend */
--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) {
/* Try to ascend to next stop, go back and wait if we hit the ceiling on the way */
/* 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);
tissue_tolerance = add_segment(depth_to_mbar(trial_depth, dive) / 1000.0, &dive->cylinder[current_cylinder].gasmix, 1, po2, dive);
int deltad = ascend_velocity(trial_depth) * 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;
@ -696,28 +708,33 @@ void plan(struct diveplan *diveplan, char **cached_datap, struct dive **divep, b
trial_depth -= deltad;
}
restore_deco_state(trial_cache);
/* The next stop is clear */
if(clear_to_ascend)
break;
/* Wait a minute */
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, 60, po2, dive);
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 += 60;
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);