-/* Try to move "actor" one step in direction "d" and handle the consequences:
- * either the move succeeds, or another actor is encountered and hit (which leads
- * to its lifepoint decreasing by one and potentially its death), or the target
- * square is not passable and the move fails.
+/* Try to move "actor" one step in direction "d" (where east is 'E', north 'N'
+ * etc.) and handle the consequences: either the move succeeds, or another actor
+ * is encountered and hit (which leads to its lifepoint decreasing by one and
+ * potentially its death), or the target square is not passable, the move fails.