void Lattice::checkEvent(int ii,int jj)
{
uniform_real_distribution<double> unif(0,1);
double r = unif(mt_rand);
Site* S = &lat[ii][jj];
if(S->isEmpty() || S->isDeveloped())
{
return;
}
double trueDeathRate = getDeathRate(*S);
if( r < trueDeathRate*dt)
{
S->die();
}
else if(r < (trueDeathRate + birthRate[S->getSpecies()])*dt ) //if roll birth
{
int r2 = int(unif(mt_rand)*numNeighbors);
S->growIntoNeighbor(r2);
}
// else if( S->getSpecies() == parasite && r < ( trueDeathRate + birthRate[S->getSpecies()] + parasiteBirthIncrement )*dt ) //if roll colonization into grass site TODO: replace getspecies with parasite. one less function call.
// {
// int r2 = int(unif(mt_rand)*numNeighbors);
// if(S->getNeighbor(r2)->getSpecies()==grass)
// {
// S->growIntoNeighbor(r2);
// }
// }
}
double Lattice::getDeathRate(Site S) //TODO: move into site
{
double rate = 0;
if( !(S.isEmpty() || S.isDeveloped()))
{
rate = deathRate[S.getSpecies()];
if(S.getSpecies()==grass)
{
for ( int i = 0; i< numNeighbors; i++)
{
if(S.getNeighbor(i)->getSpecies()==parasite)
{
rate = rate + parasiteOnGrassDeathIncrement;
}
else if(S.getNeighbor(i)->getSpecies()==forb)
{
rate = rate + forbOnGrassDeathIncrement;
}
}
}
}
return rate;
}
