Method Inst_Exploit

avida-core/source/cpu/cHardwareCPU.cc:8697–8745

}

bool cHardwareCPU::Inst_Exploit(cAvidaContext& ctx)
{
  int num_rotations = 0;
  double phero_amount = 0;
  double max_pheromone = 0;
  
  cPopulation& pop = m_world->GetPopulation();
  int cellid = m_organism->GetCellID();
  
  if (cellid == -1) return false;
  
  cPopulationCell& mycell = pop.GetCell(cellid);
  cDeme &deme = pop.GetDeme(pop.GetCell(cellid).GetDemeID());
  const cResourceCount& deme_resource_count = deme.GetDemeResourceCount();
  Apto::Array<double> cell_resources;
  
  if ( (m_world->GetConfig().EXPLOIT_EXPLORE_PROB.Get() >= 0) &&
      (ctx.GetRandom().P(m_world->GetConfig().EXPLOIT_EXPLORE_PROB.Get())) ) {
    num_rotations = ctx.GetRandom().GetUInt(m_organism->GetNeighborhoodSize());
  } else {
    // Find which neighbor has the strongest pheromone
    for (int i = 0; i < mycell.ConnectionList().GetSize(); i++) {
      
      phero_amount = 0;
      cell_resources = deme_resource_count.GetCellResources(deme.GetRelativeCellID(mycell.GetCellFaced().GetID()), ctx); 
      
      for (int j = 0; j < deme_resource_count.GetSize(); j++) {
        if (strncmp(deme_resource_count.GetResName(j), "pheromone", 9) == 0) {
          phero_amount += cell_resources[j];
        }
      }
      
      if (phero_amount > max_pheromone) {
        num_rotations = i;
        max_pheromone = phero_amount;
      }
      
      mycell.ConnectionList().CircNext();
    }
  }
  
  // Rotate until we face the neighbor with the strongest pheromone.
  // If there was no winner, just move forward.
  for (int i = 0; i < num_rotations; i++) mycell.ConnectionList().CircNext();
  
  m_organism->Move(ctx);
  
  return true;
} //End Inst_Exploit()