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Introduce pheromones

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This commit is contained in:
Petr Baudis 2011-12-07 23:54:03 +01:00
parent 61cc3ef015
commit a821e72661
9 changed files with 133 additions and 1 deletions
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pheromone.cc Normal file
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#include <cassert>
#include <cstdlib>
#include <cmath>
#include <iostream>
#include "pheromone.h"
#include "main.h"
void
pheromones::secrete(class pheromone &p)
{
for (std::list<class pheromone>::iterator pi = spectrum.begin(); pi != spectrum.end(); pi++) {
if (pi->id < p.id)
continue;
if (pi->id == p.id) {
pi->val += p.val;
return;
}
spectrum.insert(pi, p);
return;
}
spectrum.push_back(p);
}
void
pheromones::seep(class pheromones &to, double alpha, double beta)
{
for (std::list<class pheromone>::iterator pi = spectrum.begin(); pi != spectrum.end(); pi++) {
class pheromone p(pi->id, pi->val * (alpha * PH_COUNT / pi->id + beta));
to.secrete(p);
}
}
void
pheromones::decay(double gamma, double delta)
{
for (std::list<class pheromone>::iterator pi = spectrum.begin(); pi != spectrum.end(); pi++) {
next_p:
pi->val *= gamma;
pi->val -= delta;
if (pi->val < 0.001) {
pi = spectrum.erase(pi);
if (pi != spectrum.end())
goto next_p;
}
}
}