+-------------------
|XXXXX             :
|XX                :
|              +---+
|XXX             XX|
|XXXXX            X|
+---------+        |
|XXXXXXXXX|        |
|XXXXXXXXX|        |
+---------+        |
|XXXXXX            |
|XXXX              |
|XX               X|
|X       +      XXX|
|              XXXX|
|               XXX|
|  +-----+  +------+
|                  :
|                  :
|::+----------------
palette white
spawn drone 7 18
spawn drone 7 19
spawn basher 19 10
spawn spitter 19 7
spawn spitter 19 12
spawn basher 2 4
spawn drone 10 13
spawn drone 11 14
spawn drone 9 14
spawn drone 10 15
if 15
spawn basher 15 4
fi
