1 files changed, 136 insertions, 0 deletions
diff --git a/src/mazerator.c b/src/mazerator.c
new file mode 100644
index 0000000..33c47ce
--- /dev/null
+++ b/src/mazerator.c
@@ -0,0 +1,136 @@
+#include "maze.h"
+#include "utils.h"
+#include <getopt.h>
+#include <stdio.h>
+#include <stdlib.h>
+
+void validate_number_optarg(char *optarg, int c)
+{
+	char *base_error = malloc((38 + 1) * sizeof(char));
+	sprintf(base_error, "Error: Invalid option argument for -%c.", c);
+
+	if (!is_number(optarg))
+	{
+		printf("%s It must be a number\n", base_error);
+		exit(1);
+	}
+
+	if (atoi(optarg) < 1)
+	{
+		printf("%s It must be greater than 0\n", base_error);
+		exit(1);
+	}
+}
+
+void validate_start_coords(int start_x, int start_y, int width, 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(1);
+	}
+
+	if (start_y > height)
+	{
+		printf(error_format, "y", "height");
+		exit(1);
+	}
+}
+
+void get_seed(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[])
+{
+	int maze_width = 40;
+	int maze_height = 20;
+	int start_x = 0;
+	int start_y = 0;
+	char *wall = "█";
+	int seed = -1;
+
+	int c;
+	while ((c = getopt_long(argc, argv, "w:h:W:s:x:y:", options, NULL)) != -1)
+	{
+		switch (c)
+		{
+		case 'w':
+			validate_number_optarg(optarg, c);
+			maze_width = atoi(optarg);
+			break;
+		case 'h':
+			validate_number_optarg(optarg, c);
+			maze_height = atoi(optarg);
+			break;
+		case 'x':
+			validate_number_optarg(optarg, c);
+			start_x = atoi(optarg);
+			break;
+		case 'y':
+			validate_number_optarg(optarg, c);
+			start_y = atoi(optarg);
+			break;
+		case 'W':
+			wall = optarg;
+			break;
+		case 's':
+			validate_number_optarg(optarg, c);
+			seed = atoi(optarg);
+			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: 0)\n"
+				"  -y, --start-y Y         The y coordinate for the start position (Default: 0)\n"
+				"  -w, --wall WALL         Single character used as maze walls (Default: '█')\n"
+				"  -s, --seed SEED         The randomization seed used for maze generation (Any number)\n"
+				"  --help                  Displays usage information\n",
+				argv[0]);
+			exit(0);
+		case '?':
+			printf("\nTry '%s --help' for more information\n", argv[0]);
+			exit(1);
+		}
+	}
+
+	validate_start_coords(start_x, start_y, maze_width, maze_height);
+
+	if (seed == -1)
+	{
+		get_seed(&seed);
+	}
+
+	srand(seed);
+
+	int full_maze_height = maze_height * 2 + 1;
+	int full_maze_width = maze_width * 2 + 1;
+
+	struct MazeSize maze_size = {.width = maze_width, .height = maze_height};
+
+	struct Maze maze = maze_create(maze_size, wall);
+
+	struct Position start_pos = {.x = start_x, .y = start_y};
+
+	maze_excavate(maze, start_pos);
+
+	maze_print(maze.grid, full_maze_width, full_maze_height);
+}