arkorty/maze.c
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Fix bug: Cursor position couldn't be reset properly

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This commit is contained in:
Arkaprabha Chakraborty
2023-06-03 22:03:05 +05:30
parent 488452de80
commit beef89b537
1 changed files with 41 additions and 27 deletions
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68
maze.c
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@@ -36,7 +36,11 @@ size_t X_SIZE;
size_t Y_SIZE; size_t Y_SIZE;
void get_size(const char *path) { void get_size(const char *path) {
FILE *file = fopen(path, "r"); FILE *file;
if (!(file = fopen(path, "r"))) {
printf("Couldn't find map file. Check file path.\n");
exit(0);
}
char ch; char ch;
size_t x_cnt = 0; size_t x_cnt = 0;
@@ -55,10 +59,8 @@ void get_size(const char *path) {
Y_SIZE = y_cnt; Y_SIZE = y_cnt;
} }
void move_cursor() { #define restore_cursor() printf("\033[u")
printf("\033[%zdD", Y_SIZE); #define save_cursor() printf("\033[s")
printf("\033[%zdA", X_SIZE);
}
void move(DIRECTION dir) { void move(DIRECTION dir) {
switch (dir) { switch (dir) {
@@ -128,7 +130,11 @@ void alloc_map() {
} }
void load_map(const char *path) { void load_map(const char *path) {
FILE *file = fopen(path, "r"); FILE *file;
if (!(file = fopen(path, "r"))) {
printf("Couldn't find map file. Check file path.\n");
exit(0);
}
size_t y_cord = 0; size_t y_cord = 0;
size_t x_cord = 0; size_t x_cord = 0;
@@ -155,6 +161,7 @@ void load_map(const char *path) {
void print_map() { void print_map() {
const char sprites[] = " H*XO"; const char sprites[] = " H*XO";
save_cursor();
for (size_t y_cord = 0; y_cord < MAP->y_size; ++y_cord) { for (size_t y_cord = 0; y_cord < MAP->y_size; ++y_cord) {
for (size_t x_cord = 0; x_cord < MAP->x_size; ++x_cord) { for (size_t x_cord = 0; x_cord < MAP->x_size; ++x_cord) {
putchar(sprites[MAP->pntr[y_cord][x_cord]]); putchar(sprites[MAP->pntr[y_cord][x_cord]]);
@@ -162,18 +169,22 @@ void print_map() {
} }
putchar('\n'); putchar('\n');
} }
restore_cursor();
} }
void set_term_def(); void set_term_def();
void set_term_raw(); void set_term_raw();
void clear() { void clear() {
save_cursor();
for (size_t y_cord = 0; y_cord < MAP->y_size; ++y_cord) { for (size_t y_cord = 0; y_cord < MAP->y_size; ++y_cord) {
for (size_t x_cord = 0; x_cord < MAP->x_size; ++x_cord) { for (size_t x_cord = 0; x_cord < MAP->x_size; ++x_cord) {
printf(" "); putchar(' ');
putchar(' ');
} }
printf("\n"); putchar('\n');
} }
restore_cursor();
} }
void check_win() { void check_win() {
@@ -218,13 +229,14 @@ void *print() {
while (!QUIT) { // When ESC is not pressed while (!QUIT) { // When ESC is not pressed
print_map(); print_map();
usleep(41667); usleep(41667);
move_cursor();
} }
if (WIN) { if (WIN) {
clear(); clear();
move_cursor();
printf("Congratulations! You have won the game.\n"); printf("Congratulations! You have won the game.\n");
} else {
clear();
printf("Keyboard interrupt! Quitting now...\n");
} }
return EXIT_SUCCESS; return EXIT_SUCCESS;
@@ -232,19 +244,21 @@ void *print() {
void set_term_raw() { void set_term_raw() {
struct termios raw; struct termios raw;
tcgetattr(STDIN_FILENO, &raw); // Save the state of the terminal to struct raw tcgetattr(STDIN_FILENO, &raw); // Save the state of the terminal to struct raw
// STDIN_FILENO is from <stdlib.h> // STDIN_FILENO is from <stdlib.h>
// tcgetattr() from <termios.h> // tcgetattr() from <termios.h>
tcgetattr(STDIN_FILENO, &TSTATE);
atexit(&set_term_def); // Revert to canonical mode when exiting the program
// atext() from <stdlib.h>
raw.c_lflag &= ~(ECHO | ICANON); // Turn off canonical mode
// Turn off ECHO mode so that keyboard is not
// printing to terminal
// ICANON and ECHO is bitflag. ~ is binary NOT operator
tcsetattr(STDIN_FILENO, TCSAFLUSH, &raw); // Set the terminal to be in raw mode tcgetattr(STDIN_FILENO, &TSTATE);
// tcsetattr() from <termios.h>
atexit(&set_term_def); // Revert to canonical mode when exiting the program
// atext() from <stdlib.h>
raw.c_lflag &= ~(ECHO | ICANON); // Turn off canonical mode
// Turn off ECHO mode so that keyboard is not
// printing to terminal
// ICANON and ECHO is bitflag. ~ is binary NOT operator
tcsetattr(STDIN_FILENO, TCSAFLUSH, &raw); // Set the terminal to be in raw mode
// tcsetattr() from <termios.h>
} }
void set_term_def() { void set_term_def() {
@@ -257,13 +271,13 @@ int main(int argc, char *argv[]) {
alloc_map(); alloc_map();
load_map(argv[1]); load_map(argv[1]);
pthread_t id_print, id_read; pthread_t print_pid, capture_pid;
pthread_create(&id_print, NULL, print, NULL); pthread_create(&print_pid, NULL, print, NULL);
pthread_create(&id_read, NULL, capture, NULL); pthread_create(&capture_pid, NULL, capture, NULL);
pthread_join(id_print, NULL); pthread_join(print_pid, NULL);
pthread_join(id_read, NULL); pthread_join(capture_pid, NULL);
} }
return 0; return 0;