// Copyright 1999 Regents of The University of Michigan
// This file just contains a method extracted from a java class.
// It is only meant to be used for instruction.

/** 
This method starts and runs the main control loop of the simulator.
*/
public void StartSimulator() {
	ListElement elem;  // for walking through linked lists
	DecisionMaker dm;  // temporary variable for accessing a decision maker
	int i;
	stopRequested = false;  // control loop quits when set to true
	frame.show();  // display the simulator window
	// Control Loop
	do {
		// don't take a step when stopped or paused
		if (!paused && !stopRequested) {
			// walk through the decision makers connected to the simulator
			for (elem = decisionMakers.head; elem != null; elem = elem.next) {
				dm = (DecisionMaker) elem.data;
				// if the decision maker was not in the middle of thinking, let it take a step
				// and attempt actions
				if (dm.thinkTimeLeft == 0.0)
					dm.TakeStep();
				// otherwise, just decrement the tie left remaining to think
				else {
					dm.thinkTimeLeft -= 1.0;
					if (dm.thinkTimeLeft < 0.0)
						dm.thinkTimeLeft = 0.0;
				}
			}
			// update the states of entities by processing their action queues
			UpdateState();
			// redraw the graphics
			frame.repaintPanel();
			// increment the clock on each step
			clock += 1.0;
		}
		// slow control loop down by making the process sleep for a short time
		try {
			Thread.sleep(200);
		} catch (InterruptedException e) {
		}
		// if the clock is past its limit, stop the simulator
		if (clock > clockStop)
			stopRequested = true;
	} while (true);
}