From 46015c068caaf2c15b450cf8eec3bb3a527aba42 Mon Sep 17 00:00:00 2001
From: HampusM <hampus@hampusmat.com>
Date: Mon, 13 Dec 2021 16:29:13 +0100
Subject: feat: add start coordinate options

---
 mazerator.c | 34 ++++++++++++++++++++++++++++++----
 1 file changed, 30 insertions(+), 4 deletions(-)

(limited to 'mazerator.c')

diff --git a/mazerator.c b/mazerator.c
index 8ebc7d3..82620f0 100644
--- a/mazerator.c
+++ b/mazerator.c
@@ -84,12 +84,14 @@ char ***create_maze(int height, int width, char *wall)
  * - maze: The maze to excavate
  * - maze_height: The height of the maze
  * - maze_width: The width of the maze
+ * - start_x: X coordinate to start on
+ * - start_y Y coordinate to start on
  */
-void excavate_maze(char ***maze, int maze_height, int maze_width)
+void excavate_maze(char ***maze, int maze_height, int maze_width, int start_x, int start_y)
 {
 	struct stack *path = create_stack(maze_width * maze_height);
 
-	stack_push(path, 0);
+	stack_push(path, get_maze_pos(start_y, start_x));
 
 	int visited_pos_cnt = 0;
 	while (1)
@@ -171,6 +173,8 @@ const struct option options[] = {
 	{"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}};
 
@@ -178,11 +182,13 @@ 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:", options, NULL)) != -1)
+	while ((c = getopt_long(argc, argv, "w:h:W:s:x:y:", options, NULL)) != -1)
 	{
 		switch (c)
 		{
@@ -204,6 +210,24 @@ int main(int argc, char *argv[])
 
 			maze_height = atoi(optarg);
 			break;
+		case 'x':
+			if (!is_number(optarg) || atoi(optarg) < 1)
+			{
+				printf("Invalid option argument for -%c!\n", c);
+				exit(1);
+			}
+
+			start_x = atoi(optarg);
+			break;
+		case 'y':
+			if (!is_number(optarg) || atoi(optarg) < 1)
+			{
+				printf("Invalid option argument for -%c!\n", c);
+				exit(1);
+			}
+
+			start_y = atoi(optarg);
+			break;
 		case 'W':
 			wall = optarg;
 			break;
@@ -222,6 +246,8 @@ int main(int argc, char *argv[])
 				"Options:\n"
 				"  -w, --width WIDTH       The width of the maze. (1-255) (Default: 40)\n"
 				"  -h, --heigth HEIGHT     The heigth of the maze. (1-255) (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",
@@ -247,7 +273,7 @@ int main(int argc, char *argv[])
 
 	char ***maze = create_maze(full_maze_height, full_maze_width, wall);
 
-	excavate_maze(maze, maze_height, maze_width);
+	excavate_maze(maze, maze_height, maze_width, start_x, start_y);
 
 	print_maze(maze, full_maze_height, full_maze_width);
 }
-- 
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