int find_free(point_t pos, point_t *free)
{
int cnt;
point_t p;
int i = rand() % DELTA_FIELDS;
for (cnt = 0; cnt < DELTA_FIELDS; cnt++) {
if (i >= DELTA_FIELDS) {
i = 0;
}
p.x = pos.x + delta_pos[i].x;
p.y = pos.y + delta_pos[i].y;
if (p.x < 0 || p.y < 0 || p.x >= field_count_x || p.y >= field_count_y) {
i++;
continue;
}
if (check_food(p) == NULL) {
*free = p;
return 0;
}
i++;
}
return -1;
}
int snake_start()
{
restart:
score = 0;
init_snake();
init_map();
clear();
refresh();
draw_score();
draw_help();
draw_box(0, 1, LINES-2, COLS-2);
draw_snake();
draw_map();
gen_food();
if ((pthread_create(&thread_input, NULL, get_input, NULL)) != 0)
exit(1);
while (1) {
usleep(speed);
check_input();
if (exit_flag) {
pthread_cancel(thread_input);
exit_snake();
break;
}
if (pause_flag) {
pthread_cancel(thread_input);
getch();
pause_flag = 0;
if ((pthread_create(&thread_input, NULL, get_input, NULL)) != 0)
exit(1);
}
move_snake();
if (check_dead()) {
pthread_cancel(thread_input);
if (snake_dead_exit()) {
exit_snake();
break;
}
goto restart;
}
if (check_food()) {
inc_score();
draw_score();
snake_grow_one();
gen_food();
}
};
return 0;
}
Collision find_collision(Snake* snake, FoodList* food_list, Screen* screen) {
if (!within_screen(snake, screen)) {
return SCREEN;
}
if (check_autophagy(snake)) {
return SNAKE;
}
if (check_food(snake, food_list)) {
return FOOD;
}
return NONE;
}
