/**
* Calculates how every traffic light should be switched Per node, per sign the waiting roadusers
* are passed and per each roaduser the gain is calculated.
*
* @param The TLDecision is a tuple consisting of a traffic light and a reward (Q) value, for it
* to be green
* @see gld.algo.tlc.TLDecision
*/
public TLDecision[][] decideTLs() {
int num_dec;
int num_tld = tld.length;
// Determine wheter it should be random or not
boolean do_this_random = false;
if (random_number.nextFloat() < random_chance) do_this_random = true;
for (int i = 0; i < num_tld; i++) {
num_dec = tld[i].length;
for (int j = 0; j < num_dec; j++) {
Sign currenttl = tld[i][j].getTL();
float gain = 0;
Drivelane currentlane = currenttl.getLane();
int waitingsize = currentlane.getNumRoadusersWaiting();
ListIterator queue = currentlane.getQueue().listIterator();
if (!do_this_random) {
for (; waitingsize > 0; waitingsize--) {
Roaduser ru = (Roaduser) queue.next();
int pos = ru.getPosition();
Node destination = ru.getDestNode();
gain +=
q_table[currenttl.getId()][pos][destination.getId()][1]
- q_table[currenttl.getId()][pos][destination.getId()][0]; // red - green
}
float q = gain;
} else gain = random_number.nextFloat();
tld[i][j].setGain(gain);
}
}
return tld;
}
public void updateRoaduserMove(
Roaduser ru,
Drivelane prevlane,
Sign prevsign,
int prevpos,
Drivelane dlanenow,
Sign signnow,
int posnow,
PosMov[] posMovs,
Drivelane desired) {
// When a roaduser leaves the city; this will
if (dlanenow == null || signnow == null) {
dlanenow = prevlane;
signnow = prevsign;
posnow = -1;
return; // ?? is recalculation is not necessary ??
}
// This ordening is important for the execution of the algorithm!
if (prevsign.getType() == Sign.TRAFFICLIGHT
&& (signnow.getType() == Sign.TRAFFICLIGHT || signnow.getType() == Sign.NO_SIGN)) {
Node dest = ru.getDestNode();
recalcQ(
prevsign,
prevpos,
dest,
prevsign.mayDrive(),
signnow,
posnow,
signnow.mayDrive(),
posMovs);
}
}
/**
* Calculates how every traffic light should be switched
* Per node, per sign the waiting roadusers are passed and per each roaduser the gain is calculated.
* @param The TLDecision is a tuple consisting of a traffic light and a reward (Q) value, for it to be green
* @see gld.algo.tlc.TLDecision
*/
public TLDecision[][] decideTLs()
{
int num_dec, currenttlID, waitingsize, pos, destID;
float gain =0, passenger_factor;
Sign currenttl;
Drivelane currentlane;
ListIterator queue;
Roaduser ru;
//Determine wheter it should be random or not
boolean randomrun = false;
if (random_number.nextFloat() < random_chance) randomrun = true;
for (int i=0;i<num_nodes;i++) {
num_dec = tld[i].length;
for(int j=0;j<num_dec;j++) {
currenttl = tld[i][j].getTL();
currenttlID = currenttl.getId();
currentlane = currenttl.getLane();
waitingsize = currentlane.getNumRoadusersWaiting();
queue = currentlane.getCompleteQueue().listIterator();
gain = 0;
for(; waitingsize>0; waitingsize--) {
ru = (Roaduser) queue.next();
pos = ru.getPosition();
destID = ru.getDestNode().getId();
passenger_factor = ru.getNumPassengers();
gain += passenger_factor * (q_table[currenttlID][pos][destID][red_index] - q_table[currenttlID][pos][destID][green_index]); //red - green
}
if(trackNode!=-1 && i==trackNode) {
Drivelane currentlane2 = tld[i][j].getTL().getLane();
boolean[] targets = currentlane2.getTargets();
System.out.println("node: "+i+" light: "+j+" gain: "+gain+" "+targets[0]+" "+targets[1]+" "+targets[2]+" "+currentlane2.getNumRoadusersWaiting());
}
if(randomrun)
gain = random_number.nextFloat();
tld[i][j].setGain(gain);
}
}
return tld;
}
protected int calcDelay(Roaduser ru, int stop, int distance) {
// calculate the delay for the drivelane leading to this Junction
int start = ru.getDrivelaneStartTime();
int speed = ru.getSpeed();
int min_steps = distance / speed;
int num_steps = stop - start;
int delay = num_steps - min_steps;
ru.addDelay(delay);
// System.out.println("Just crossed, and waited:"+delay+" start:"+start+" stop:"+stop+"
// dist:"+distance);
ru.setDrivelaneStartTime(stop);
// then return the delay
return delay;
}
public void updateRoaduserMove(Roaduser ru, Drivelane prevlane, Sign prevsign, int prevpos, Drivelane dlanenow, Sign signnow, int posnow, PosMov[] posMovs, Drivelane desired)
{
// Roaduser has just left the building
if(dlanenow == null || signnow == null) {
return;
}
//This ordening is important for the execution of the algorithm!
int Ktl = dlanenow.getNumRoadusersWaiting();
if(prevsign.getType()==Sign.TRAFFICLIGHT && (signnow.getType()==Sign.TRAFFICLIGHT || signnow.getType()==Sign.NO_SIGN)) {
boolean light = prevsign.mayDrive();
Node dest = ru.getDestNode();
recalcP(prevsign, prevpos, dest, light, signnow, posnow, Ktl);
recalcVa(prevsign, prevpos, dest);
recalcV(prevsign, prevpos, dest, light, Ktl);
recalcQa(prevsign, prevpos, dest, light, signnow, posnow, posMovs);
recalcQ(prevsign, prevpos, dest, light, signnow, posnow, posMovs, Ktl);
}
}