Finished Runescape Guide, add partial Survival Expert support in Tutorial Island plugin.

data/plugins/location/tutorial-island/utils.rb

@@ -0,0 +1,34 @@
+require 'java'
+
+java_import 'org.apollo.game.model.entity.Player'
+
+# Declare the tutorial island progress attribute.
+declare_attribute(:tutorial_island_progress, :not_started, :persistent)
+
+
+# The existing player class.
+class Player
+
+  # Returns whether or not this Player is currently on tutorial island.
+  def in_tutorial_island
+    x, y = self.position.x, self.position.y
+    
+    return above_ground(x, y) || below_ground(x, y)
+  end
+
+end
+
+
+private
+
+
+# Returns whether or not the specified coordinate pair is above ground on tutorial island.
+def above_ground(x, y)
+  return (x >= 3053 && x <= 3156 && y >= 3056 && y <= 3136)
+end
+
+
+# Returns whether or not the specified coordinate pair is 'below' ground on tutorial island.
+def below_ground(x, y)
+  return (x >= 3072 && x <= 3118 && y >= 9492 && y <= 9535)
+end