CreatureAI Cleanups

Source/Framework/Constants/CreatureConst.cs

@@ -435,6 +435,15 @@ namespace Framework.Constants
         Other
     }
 
+    public enum SelectTargetMethod
+    {
+        Random = 0,  // just pick a random target
+        MaxThreat,   // prefer targets higher in the threat list
+        MinThreat,   // prefer targets lower in the threat list
+        MaxDistance, // prefer targets further from us
+        MinDistance  // prefer targets closer to us
+    }
+
     [Flags]
     public enum GroupAIFlags
     {

Source/Framework/Constants/UnitConst.cs

@@ -120,11 +120,13 @@ namespace Framework.Constants
         NoDamage = 4,                            // used also in case when damage applied to health but not applied to spell channelInterruptFlags/etc
         Self = 5
     }
+
     public enum WeaponDamageRange
     {
         MinDamage,
         MaxDamage
     }
+
     public enum UnitMods
     {
         StatStrength, // STAT_STRENGTH..UNIT_MOD_STAT_INTELLECT must be in existed order, it's accessed by index values of Stats enum.