void
Individual::Evaluate(Individual &ind) {
/* Evaluate fitness */
/* War simulation */
int* opposing_pheno=ind.GetPhenotype();
int battles_won = 0;
int battles_lost = 0;
int my_surviving_troops=0;
float my_strength=1;
int my_soldiers;
float my_force;
int opposing_surviving_troops=0;
float opposing_strength=1;
int opposing_soldiers;
float opposing_force;
for( int i = 0; i < m_phenolength; i++ ) {
my_soldiers = m_phenotype[i] + my_surviving_troops;
my_force = my_strength * (float)my_soldiers;
opposing_soldiers = opposing_pheno[i] + opposing_surviving_troops;
opposing_force = opposing_strength * (float)opposing_soldiers;
if ( my_force > opposing_force ) { // Victory
battles_won++;
opposing_strength -= m_lf;
my_surviving_troops = m_rf * (my_soldiers - opposing_soldiers);
}
else if ( my_force < opposing_force ) { // Loss
battles_lost++;
my_strength -= m_lf;
opposing_surviving_troops = m_rf * (opposing_soldiers - my_soldiers);
}
}
if ( battles_won == battles_lost ) {
m_fitness+=1;
ind.SetFitness(ind.GetFitness()+1);
}
else if ( battles_won > battles_lost ) {
m_fitness+=2;
}
else {
ind.SetFitness(ind.GetFitness()+2);
}
}
/* Sorting function for individuals */
bool Strategies::IndividualSort (Individual i,Individual j) {
return (i.GetFitness()>j.GetFitness());
}
