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Junction.cpp
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Junction.cpp
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//
// Created by RYC on 2020/4/14.
//
#include "Junction.h"
#include <iostream>
using namespace std;
//function definition for constructor - no data provided
Junction::Junction() {
//set start point for all the roads in junction
roadSeq[0].setStrPt(ctr_x, ctr_y + roadSeq[0].getLength());
roadSeq[1].setStrPt(ctr_x - roadSeq[1].getLength(), ctr_y);
roadSeq[2].setStrPt(ctr_x, ctr_y - roadSeq[2].getLength());
roadSeq[3].setStrPt(ctr_x + roadSeq[3].getLength(), ctr_y);
currentRoad = roadSeq.begin();
}
//function definition for constructor for cross junction - data provided
Junction::Junction(int ctr_x, int ctr_y, string name) {
this->ctr_y = ctr_y;
this->ctr_x = ctr_x;
this->name = name;
//set start point for all the roads in junction
roadSeq[0].setStrPt(ctr_x, ctr_y + roadSeq[0].getLength());
roadSeq[1].setStrPt(ctr_x - roadSeq[1].getLength(), ctr_y);
roadSeq[2].setStrPt(ctr_x, ctr_y - roadSeq[2].getLength());
roadSeq[3].setStrPt(ctr_x + roadSeq[3].getLength(), ctr_y);
currentRoad = roadSeq.begin();
}
//function definition for constructor for T junction - data provided
Junction::Junction(int ctr_x, int ctr_y, string name, char del_road) {
this->ctr_y = ctr_y;
this->ctr_x = ctr_x;
this->name = name;
//removes a road from cross junction
//generates T junction
switch (del_road) {
case 'n':
roadSeq.erase(roadSeq.begin());
break;
case 'e':
roadSeq.erase(roadSeq.begin() + 1);
break;
case 's':
roadSeq.erase(roadSeq.begin() + 2);
break;
case 'w':
roadSeq.erase(roadSeq.begin() + 3);
break;
}
}
Junction::~Junction() {
// if(!roadSeq.empty() && pedestrianLight != nullptr && currentRoad != roadSeq.end()){
// roadSeq.clear();
// delete pedestrianLight;
// }
}
//function definition for simulating one junction
void Junction::tick() {//four directions of lights + pedestrian light
while (true) {
//activate trafficlight
if (currentRoad == roadSeq.end()) {
//let pedestiran go
//go to the first light
currentRoad = roadSeq.begin();
pedestrianLight->run_one_cycle();
}
currentRoad->trafficLight->run_one_cycle();
currentRoad++;
}
}
//function definition for executing junction functionality simultaneously
//with the rest of the system
thread Junction::simulate_one_tick() {
return thread([this] { this->tick(); });
}
//function definition for connecting adjacent junctions to current junction
void Junction::setCloseJunctions(Junction *west, Junction *east, Junction *north, Junction *south) {
//setup the grid network (connect the junctions)
westJunction = west;
eastJunction = east;
northJunction = north;
southJunction = south;
//connects current junction and the adjacent junctions in both ways
//e.g. west road of current junction would connect to east road of adjacent junction
if (west)
west->eastJunction = this;
if (east)
east->westJunction = this;
if (north)
north->southJunction = this;
if (south)
south->northJunction = this;
}
//function definition for setting up independent traffic lights
void Junction::generateIndepSeq() {
//generate random time for the traffic light time sequence by randomising the green light
srand((unsigned) time(0));
int delay[4] = {1, 1, (1 + (rand() % 10)), 1};
for (int index = 0; index < roadSeq.size(); index++)
this->roadSeq[index].trafficLight->setDelays(delay);
}