/*
* Completely erases the current state of the Simulation
*/
public void reset() {
e.purgeAgents();
paint.clearHistory();
children.clear();
fillWithAgents();
Agent a = new Agent();
a.setName("My Agent");
a.setChrome("000 000 000 000 000 000 000 011 011 011 011 011 100 101 101 101");
children.add(a);
cur_gen = 0;
current_elite = null;
prev_elite_total = 0;
running = true;
}
public void run() {
// keep the thread alive
while (true) {
// wait for a signal to re-continue processing agents
if (!running) {
synchronized (this) {
try {
wait();
} catch (InterruptedException ie) {
System.err.println("ERROR: wait() call failed" + ie);
}
}
}
// run for the number of generations specified
while (cur_gen < generations && running) {
// create our list of agents
e.purgeAgents();
e.addAgents(children);
// Process 100-days
for (int i = 0; i < day_count; i++) {
e.simulateDay();
}
// record this generation
history.addGeneration(children);
// sort the results by money, descending
Collections.sort(children);
Collections.reverse(children);
// if the elite total changed, alert the main class
int elite_most_money = children.get(0).getMoney();
if (elite_most_money > prev_elite_total) {
// cache the new elite total
prev_elite_total = elite_most_money;
current_elite = children.get(0);
ep.setNewElite(current_elite);
ep.repaint();
// fire an event to the main class
listener.actionPerformed(
new ActionEvent(this, ActionEvent.ACTION_PERFORMED, "elite_total"));
}
// now we need to select agents for crossover, mutation,
// and elites for elites, keep the first x%
List<Agent> elites = children.subList(0, (int) (children.size() * elite_percent));
// for parents to keep, simply choose the top y%
// (including the elites)
List<Agent> parents = children.subList(0, (int) (children.size() * parent_percent));
// create some children, and perform mutations
children = evo.performCrossover(parents);
children = evo.performMutation(children);
// add the elite agents into the pool
children.addAll(elites);
// System.out.println(elites.get(0) + ": " + elites.get(0).getMoney());
// reset the elites for the next generation
for (Agent elitea : elites) elitea.reset();
// repopulate the next generation with new Agents
fillWithAgents();
cur_gen++;
}
running = false;
}
}