adding intermediate level 9

CHANGELOG.rdoc

@@ -1,3 +1,5 @@
+* Adding intermediate level 9 with distance_of ability
+
 * Adding intermediate level 8 with look and detonate abilities
 
 * Raising an exception when performing an ability with a bad direction.

towers/intermediate/level_009.rb

@@ -0,0 +1,31 @@
+#  ----
+# |ssC>|
+# |@sss|
+# |ssC |
+#  ----
+
+description "Never before have you seen a room so full of sludge. Start the fireworks!"
+tip "Be careful not to let the ticking captive get caught in the flames. Use warrior.distance_of to avoid the captives."
+clue "Be sure to bind the surrounding enemies before fighting. Check your health before detonating explosives."
+
+time_bonus 70
+size 4, 3
+stairs 3, 0
+
+warrior 0, 1, :east do |u|
+  u.add_abilities :distance_of
+end
+
+unit :captive, 2, 0, :south do |u|
+  u.add_abilities :explode!
+  u.abilities[:explode!].time = 20
+end
+unit :captive, 2, 2, :north
+
+unit :sludge, 0, 0, :south
+unit :sludge, 1, 0, :south
+unit :sludge, 1, 1, :east
+unit :sludge, 2, 1, :east
+unit :sludge, 3, 1, :east
+unit :sludge, 0, 2, :north
+unit :sludge, 1, 2, :north