/* start */
int random_start(ubx_block_t *b)
{
DBG("in");
uint32_t seed, ret;
unsigned int clen;
struct random_config* rndconf;
struct rnd_info* inf;
inf=(struct rnd_info*) b->private_data;
/* get and store min_max_config */
rndconf = (struct random_config*) ubx_config_get_data_ptr(b, "min_max_config", &clen);
inf->info.min = rndconf->min;
inf->info.max = (rndconf->max == 0) ? INT_MAX : rndconf->max;
/* seed is allowed to change at runtime, check if new one available */
ubx_port_t* seed_port = ubx_port_get(b, "seed");
ret = read_seed(seed_port, &seed);
if(ret>0) {
DBG("starting component. Using seed: %d, min: %d, max: %d", seed, inf->info.min, inf->info.max);
srandom(seed);
} else {
DBG("starting component. Using min: %d, max: %d", inf->info.min, inf->info.max);
}
return ret;
}
void EmergeManager::loadParamsFromSettings(Settings *settings) {
std::string seed_str;
const char *setname = (settings == g_settings) ? "fixed_map_seed" : "seed";
if (settings->getNoEx(setname, seed_str))
params.seed = read_seed(seed_str.c_str());
settings->getNoEx("mg_name", params.mg_name);
settings->getS16NoEx("water_level", params.water_level);
settings->getS16NoEx("chunksize", params.chunksize);
settings->getFlagStrNoEx("mg_flags", params.flags, flagdesc_mapgen);
delete params.sparams;
params.sparams = createMapgenParams(params.mg_name);
if (params.sparams)
params.sparams->readParams(settings);
}
MapgenParams *EmergeManager::getParamsFromSettings(Settings *settings) {
std::string mg_name = settings->get("mg_name");
MapgenParams *mgparams = createMapgenParams(mg_name);
if (!mgparams)
return NULL;
std::string seedstr = settings->get(settings == g_settings ?
"fixed_map_seed" : "seed");
mgparams->mg_name = mg_name;
mgparams->seed = read_seed(seedstr.c_str());
mgparams->water_level = settings->getS16("water_level");
mgparams->chunksize = settings->getS16("chunksize");
mgparams->flags = settings->getFlagStr("mg_flags", flagdesc_mapgen);
if (!mgparams->readParams(settings)) {
delete mgparams;
return NULL;
}
return mgparams;
}
static int load_seeds(struct globals *globals, int srows, int scols, int nseg)
{
int row, col;
SEGMENT seeds_seg;
CELL *seeds_buf, seeds_val;
int seeds_fd;
int spos, sneg, have_seeds;
struct rc Ri;
G_debug(1, "load_seeds()");
G_message(_("Loading seeds from raster map <%s>..."), globals->seeds);
if (Segment_open
(&seeds_seg, G_tempfile(), globals->nrows, globals->ncols,
srows, scols, sizeof(CELL), nseg) != TRUE)
G_fatal_error("Unable to create bounds temporary files");
seeds_fd = Rast_open_old(globals->seeds, "");
seeds_buf = Rast_allocate_c_buf();
have_seeds = 0;
/* load seeds map to segment structure */
for (row = 0; row < globals->nrows; row++) {
Rast_get_c_row(seeds_fd, seeds_buf, row);
for (col = 0; col < globals->ncols; col++) {
if (FLAG_GET(globals->null_flag, row, col)) {
Rast_set_c_null_value(&seeds_val, 1);
}
else {
seeds_val = seeds_buf[col];
if (!Rast_is_c_null_value(&seeds_val))
have_seeds = 1;
}
if (Segment_put(&seeds_seg, &seeds_val, row, col) != 1)
G_fatal_error(_("Unable to write to temporary file"));
}
}
if (!have_seeds) {
G_warning(_("No seeds found in '%s'!"), globals->seeds);
G_free(seeds_buf);
Rast_close(seeds_fd);
Segment_close(&seeds_seg);
return 0;
}
spos = 1;
sneg = -1;
/* convert seeds to regions */
G_debug(1, "convert seeds to regions");
Rast_set_c_null_value(&seeds_val, 1);
for (row = 0; row < globals->nrows; row++) {
Rast_get_c_row(seeds_fd, seeds_buf, row);
for (col = 0; col < globals->ncols; col++) {
if (!(FLAG_GET(globals->null_flag, row, col)) &&
!(FLAG_GET(globals->candidate_flag, row, col))) {
if (Rast_is_c_null_value(&(seeds_buf[col]))) {
if (Segment_put(&globals->rid_seg, &sneg, row, col) != 1)
G_fatal_error(_("Unable to write to temporary file"));
sneg--;
globals->n_regions--;
}
else {
Ri.row = row;
Ri.col = col;
read_seed(globals, &seeds_seg, &Ri, spos);
spos++;
}
}
}
}
G_free(seeds_buf);
Rast_close(seeds_fd);
Segment_close(&seeds_seg);
globals->n_regions = spos - 1;
flag_clear_all(globals->candidate_flag);
return 1;
}
