1 files changed, 6 insertions, 0 deletions

@@ -6,6 +6,12 @@
 package com.fourisland.fourpuzzle.gamestate.mapview.event.precondition;
 
 /**
+ * A Precondition is an object that helps <b>LayerEvent</b> to determine which
+ * of its (possibly many) <b>PossibleEvent</b>s is active. PossibleEvents can
+ * have Preconditions attached to them and when all Preconditions are fulfilled
+ * (determined by the <code>true</code> return value from <b>match()</b>) and
+ * there are not fulfilled PossibleEvents later in the queue, said PossibleEvent
+ * will be active.
  *
  * @author hatkirby
  */