TP4 - Correction
Version minimale : seulement la partie 1
ppompeani_cars_minimal.c
#include <pthread.h>
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
void clear_screen() { fprintf(stdout, "\e[1;1H\e[2J"); }
void refresh() { fflush(stdout); }
void move_cursor(unsigned int y, unsigned int x) {
fprintf(stdout, "\e[%d;%dH", y, x);
}
void print_n(char *s, unsigned int repeat) {
while (repeat > 0) {
fprintf(stdout, "%s", s);
repeat--;
}
}
const unsigned int ROAD_SIZE = 40;
void game_init() {
srand(time(NULL));
clear_screen();
move_cursor(1, 1);
print_n("-", ROAD_SIZE);
move_cursor(3, 1);
print_n("- ", ROAD_SIZE / 2);
move_cursor(5, 1);
print_n("-", ROAD_SIZE);
move_cursor(1, ROAD_SIZE + 1);
refresh();
}
void game_close() {
clear_screen();
refresh();
}
void *car_thread(void *param) {
int car = *((int *)param);
int car_color = rand() % 6;
int increment, x, y;
char logo;
if (car == 0) {
increment = -1;
x = ROAD_SIZE;
y = 2;
logo = '<';
} else {
increment = 1;
x = 1;
y = 4;
logo = '>';
}
for (int i = 1; i < ROAD_SIZE; i++) {
// We reset old position
move_cursor(y, x);
fputc(' ', stdout);
// We move to new position
x += increment;
move_cursor(y, x);
fputc(logo, stdout);
move_cursor(1, ROAD_SIZE + 1);
refresh();
usleep(50000 + rand() % 10000);
}
move_cursor(y, x);
fputc(' ', stdout);
move_cursor(1, ROAD_SIZE + 1);
refresh();
return NULL;
}
int main(int argc, char **argv) {
game_init();
pthread_t last;
char input;
int car_arg;
do {
input = fgetc(stdin);
switch (input) {
case 'j':
car_arg = 1;
pthread_create(&last, NULL, car_thread, &car_arg);
break;
case 'k':
car_arg = 0;
pthread_create(&last, NULL, car_thread, &car_arg);
break;
}
} while (input != 'q');
pthread_join(last, NULL);
game_close();
}
Version étendue : parties 1 et 2
ppompeani_cars_extended.c
#include <pthread.h>
#include <stdio.h>
#include <stdlib.h>
#include <termios.h>
#include <unistd.h>
void clear_screen() { fprintf(stdout, "\e[1;1H\e[2J"); }
void refresh() { fflush(stdout); }
void move_cursor(unsigned int y, unsigned int x) {
fprintf(stdout, "\e[%d;%dH", y, x);
}
void print_n(char *s, unsigned int repeat) {
while (repeat > 0) {
fprintf(stdout, "%s", s);
repeat--;
}
}
// Amélioration Couleur
const unsigned int COLOR_RESET = 0, COLOR_RED = 1, COLOR_GREEN = 2,
COLOR_YELLOW = 3, COLOR_BLUE = 4, COLOR_PURPLE = 5,
COLOR_LIGHTBLUE = 6;
void color(int color) {
if (color == COLOR_RESET) {
fprintf(stdout, "\e[0m");
} else {
fprintf(stdout, "\e[3%cm", color + '0');
}
}
unsigned int ROAD_SIZE;
// Amélioration Input
struct termios OLD_TERMINAL_PARAMS;
void game_init() {
srand(time(NULL));
clear_screen();
move_cursor(1, 1);
print_n("-", ROAD_SIZE);
move_cursor(3, 1);
print_n("- ", ROAD_SIZE / 2);
move_cursor(5, 1);
print_n("-", ROAD_SIZE);
// Amélioration Messages
move_cursor(7, 1);
fprintf(stdout, "Press j to spawn a car riding to the east");
move_cursor(8, 1);
fprintf(stdout, "Press k to spawn a car riding to the west");
move_cursor(9, 1);
fprintf(stdout, "Press q to quit");
move_cursor(1, ROAD_SIZE + 1);
// Amélioration Input
struct termios new_terminal_params;
// Store old params
tcgetattr(STDIN_FILENO, &OLD_TERMINAL_PARAMS);
// Copy params
new_terminal_params = OLD_TERMINAL_PARAMS;
// Change params
// Remove ICANON flag (wait for enter) and ECHO flag (print stdin)
new_terminal_params.c_lflag &= ~(ICANON | ECHO);
// Apply params
tcsetattr(STDIN_FILENO, TCSANOW, &new_terminal_params);
refresh();
}
void game_close() {
clear_screen();
// Amélioration Input
// Restore old params
tcsetattr(STDIN_FILENO, TCSANOW, &OLD_TERMINAL_PARAMS);
refresh();
}
// Amélioration Compteur
// Extra: une couleur différente à chaque fois que le compteur change
unsigned int CAR_COUNTER = 0;
void *counter_thread(void *param) {
int counter_color = 0;
int last_count = CAR_COUNTER;
while (1) {
if (CAR_COUNTER != last_count) {
counter_color = (counter_color + 1) % 6;
last_count = CAR_COUNTER;
move_cursor(3, ROAD_SIZE + 2);
color(counter_color);
fprintf(stdout, "%d", CAR_COUNTER);
}
sleep(1);
}
return NULL;
}
void *car_thread(void *param) {
int car = *((int *)param);
int car_color = rand() % 6;
int increment, x, y;
char logo;
if (car == 0) {
increment = -1;
x = ROAD_SIZE;
y = 2;
logo = '<';
} else {
increment = 1;
x = 1;
y = 4;
logo = '>';
}
// Amélioration Compteur
CAR_COUNTER++;
for (int i = 1; i < ROAD_SIZE; i++) {
// We reset old position
move_cursor(y, x);
fputc(' ', stdout);
// We move to new position
x += increment;
move_cursor(y, x);
// Amélioration Couleur
color(car_color);
fputc(logo, stdout);
move_cursor(1, ROAD_SIZE + 1);
refresh();
usleep(50000 + rand() % 10000);
}
move_cursor(y, x);
fputc(' ', stdout);
move_cursor(1, ROAD_SIZE + 1);
refresh();
return NULL;
}
// Amélioration Messages
void *error_thread(void *param) {
color(0);
move_cursor(11, 1);
fprintf(stdout, "Unrecognised input.");
refresh();
sleep(2);
color(0);
move_cursor(11, 1);
fprintf(stdout, " ");
refresh();
return NULL;
}
int main(int argc, char **argv) {
{
char buf[10];
printf("Quel taille doit faire la route ? (40) → ");
fgets(buf, 10, stdin);
int size = atoi(buf);
if (size == 0) {
ROAD_SIZE = 40;
} else {
ROAD_SIZE = size;
}
}
game_init();
pthread_t last, unused_thread_id;
// Amélioration Compteur
pthread_create(&unused_thread_id, NULL, counter_thread, NULL);
char input;
int car_arg;
do {
input = fgetc(stdin);
switch (input) {
case 'j':
case 'k':
if (input == 'j') {
car_arg = 1;
} else {
car_arg = 0;
}
pthread_create(&last, NULL, car_thread, &car_arg);
color(0);
move_cursor(11, 1);
fprintf(stdout, " ");
refresh();
break;
case 'q':
// Amélioration Messages
color(0);
move_cursor(11, 1);
fprintf(stdout, "Quitting. ");
refresh();
break;
default:
// Amélioration Messages
pthread_create(&unused_thread_id, NULL, error_thread, NULL);
}
} while (input != 'q');
pthread_join(last, NULL);
game_close();
}