Update mkmaze.c

src/NetHack_3.7/src/mkmaze.c

@@ -43,9 +43,9 @@ iswall(coordxy x, coordxy y)
 {
     int type;
 
-    if (!isok(x, y))
-        return 0;
-    type = levl[x][y].typ;
+    if (!isok(x, y)) // Check if the specified coordinates are valid
+        return 0; // Return false if not 
+    type = levl[x][y].typ;// Get the type of the cell at the specified coordinates
     return (IS_WALL(type) || IS_DOOR(type)
             || type == SDOOR || type == IRONBARS);
 }
@@ -280,12 +280,12 @@ wallification(coordxy x1, coordxy y1, coordxy x2, coordxy y2)
 static boolean
 okay(coordxy x, coordxy y, coordxy dir)
 {
-    mz_move(x, y, dir);
-    mz_move(x, y, dir);
+    mz_move(x, y, dir); // Move the player one space in the given direction
+    mz_move(x, y, dir); // Move the player another space in the same direction
     if (x < 3 || y < 3 || x > gx.x_maze_max || y > gy.y_maze_max
         || levl[x][y].typ != STONE)
-        return FALSE;
-    return TRUE;
+        return FALSE;// Return false if the player is not on a valid location
+    return TRUE;// Return true if the player is on a valid location
 }
 
 /* find random starting point for maze generation */
@@ -294,7 +294,7 @@ maze0xy(coord *cc)
 {
     cc->x = 3 + 2 * rn2((gx.x_maze_max >> 1) - 1);
     cc->y = 3 + 2 * rn2((gy.y_maze_max >> 1) - 1);
-    return;
+    return;// Return after storing the generated coordinates
 }
 
 static boolean