added a monster spawner and modified lvl mechanics

Monsters have a weighting on how many to spawn and roll which
specific monster to spawn from the pool. I have not added the
ability to advance levels yet, though that should work to
add monsters if the Floor number advances. I did notice a bug
where the player cannot be harmed by the monsters unless the
player moves into them, not the other way around. The monsters
seem to treat the player as a wall that cannot be passed through.
This is confusing because the code for the player and monsters match
as far as their ability to move into each other...

map.py

@@ -5,6 +5,9 @@ from wall import Wall
 from random import randint
 
 def board_edges(board_size):
+    """The outline of the generated board. Used in angband to surround
+    the level with immovable objects to keep the enemies and player inside
+    """
     x,y = board_size
     positions = []
     top = [(i,0) for i in range(x)]
@@ -20,7 +23,7 @@ def inner_board(board_size):
         for j in range(1,y-1):
             positions.append((i,j))
     return positions
-
+    
 def random_empty_position(game):
     """Returns a random empty position.
     """
@@ -43,6 +46,12 @@ def level_one(board_size):
         for j in range((y - (y // 4)), y-1):
             positions.append((i,j))
 
+    # Introduce randomness within predefined pattern
+    for _ in range(10):  # Example: Add 10 random obstacles
+        rand_i = randint(1, x - 2)
+        rand_j = randint(1, y - 2)
+        positions.append((rand_i, rand_j))
+
     # for i in range(1,x-1):
     #     for j in range(1,y-1):
     #         if i >=4 and i <= 7 or i >= 13 and i <= 16: