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#include "grid.h"
#include "maze.h"
#include "position.h"
#include "utils.h"
#include <getopt.h>
#include <stdio.h>
#include <stdlib.h>
void optarg_error(char arg, char *error)
{
printf("Error: Invalid option argument for -%c. %s\n", arg, error);
exit(EXIT_FAILURE);
}
void validate_start_coords(unsigned int start_x, unsigned int start_y, unsigned int width,
unsigned int height)
{
char *error_format =
"Error: The %s start coordinate is not allowed to be higher than the maze's %s\n";
if (start_x > width)
{
printf(error_format, "x", "width");
exit(EXIT_FAILURE);
}
if (start_y > height)
{
printf(error_format, "y", "height");
exit(EXIT_FAILURE);
}
}
void get_seed(unsigned int *seed_dst)
{
FILE *urandom = fopen("/dev/urandom", "r");
fread(seed_dst, sizeof(*seed_dst), 1, urandom);
fclose(urandom);
}
const struct option options[] = {{"width", required_argument, NULL, 'w'},
{"heigth", required_argument, NULL, 'h'},
{"wall", required_argument, NULL, 'W'},
{"seed", required_argument, NULL, 's'},
{"start-x", required_argument, NULL, 'x'},
{"start-y", required_argument, NULL, 'y'},
{"help", no_argument, NULL, 0},
{NULL, 0, NULL, 0}};
int main(int argc, char *argv[])
{
unsigned int maze_width = 40U;
unsigned int maze_height = 20U;
unsigned int *start_x = NULL;
unsigned int *start_y = NULL;
unsigned int *seed = NULL;
char *wall = "█";
int arg;
while ((arg = getopt_long(argc, argv, "w:h:W:s:x:y:", options, NULL)) != -1)
{
char *err = NULL;
switch (arg)
{
case 'w':
maze_width = str_to_uint(optarg, &err);
if (err != NULL)
optarg_error(arg, err);
if (maze_width == 0)
optarg_error(arg, "It should not be 0");
break;
case 'h':
maze_height = str_to_uint(optarg, &err);
if (err != NULL)
optarg_error(arg, err);
if (maze_height == 0)
optarg_error(arg, "It should not be 0");
break;
case 'x':
start_x = malloc_s(sizeof(unsigned int *));
*start_x = str_to_uint(optarg, &err);
if (err != NULL)
optarg_error(arg, err);
break;
case 'y':
start_y = malloc_s(sizeof(unsigned int *));
*start_y = str_to_uint(optarg, &err);
if (err != NULL)
optarg_error(arg, err);
break;
case 'W':
wall = optarg;
break;
case 's':
seed = malloc_s(sizeof(unsigned int *));
*seed = str_to_uint(optarg, &err);
if (err != NULL)
optarg_error(arg, err);
if (*seed == 0)
optarg_error(arg, "It should not be 0");
break;
case 0:
printf("Usage: %s [OPTION]...\n\n"
"Options:\n"
" -w, --width WIDTH The width of the maze (Default: 40)\n"
" -h, --heigth HEIGHT The heigth of the maze (Default: 20)\n"
" -x, --start-x X The x coordinate for the start position "
"(Default: random)\n"
" -y, --start-y Y The y coordinate for the start position "
"(Default: random)\n"
" -W, --wall WALL Single character used as maze walls "
"(Default: '█')\n"
" -s, --seed SEED The randomization seed used for maze "
"generation\n"
" --help Displays usage information\n",
argv[0]);
exit(0);
case '?':
printf("\nTry '%s --help' for more information\n", argv[0]);
exit(EXIT_FAILURE);
}
}
if (seed == NULL)
{
seed = malloc_s(sizeof(unsigned int *));
get_seed(seed);
}
srand(*seed);
free(seed);
if (start_x == NULL)
{
start_x = malloc_s(sizeof(unsigned int *));
*start_x = rand() % maze_width;
}
if (start_y == NULL)
{
start_y = malloc_s(sizeof(unsigned int *));
*start_y = rand() % maze_height;
}
validate_start_coords(*start_x, *start_y, maze_width, maze_height);
Position start_pos = position_create(*start_x * 2U + 1U, *start_y * 2U + 1U);
Grid grid = grid_create(maze_width * 2U + 1U, maze_height * 2U + 1U, wall);
grid_to_maze(grid, start_pos);
grid_print(grid);
grid_destroy(grid);
free(start_x);
free(start_y);
}
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