Car.cpp

00001 #include "Car.h"
00002 #include <stdlib.h>
00003 
00004 #define TICK 1000
00005 
00006 Car::Car(int id, Road* road, int flag) {
00007     this->id = id;   
00008     this->road = road;
00009     this->flag = flag;
00010     
00011     cycle = 0;
00012     
00013     this->thread = NULL;
00014 }
00015 
00016 void Car::update() {
00017     bool crossed = false;
00018     while (true) {
00019         ThisThread::sleep_for(TICK);
00020         road->go_flags.wait_all(flag);
00021         cycle++;
00022         
00023         position = position + speed;
00024         
00025         if (cycle % 5 == 0) {
00026             speed = rand() % 11 + 5;
00027         }
00028         
00029         if (position < 54) {
00030             speed = std::min(speed, 54 - position);
00031         } else if (!crossed && position == 54) {
00032             speed = 0;
00033             crossed = true;
00034         } else if (position < 56) {
00035             speed = 1;
00036         }
00037         
00038         road->done_flags.set(flag);   
00039     }
00040 }
00041 
00042 void Car::reset(int position, int speed) {
00043     road->done_flags.clear(flag);
00044     
00045     if (thread != NULL) {
00046         thread->terminate();   
00047     }
00048     
00049     thread = new Thread();
00050     thread->start( callback(this, &Car::update) );
00051     
00052     cycle = 0;
00053     this->position = position;
00054     this->speed = speed;
00055 }
00056 
00057 void Car::stop() {
00058     if (thread != NULL) {
00059         thread->terminate();   
00060     } 
00061 }