Progress on tutorial, misc bugfixes

Subsurface/Source/Characters/AI/AIController.cs

@@ -43,7 +43,7 @@ namespace Subsurface
             steeringManager = new SteeringManager(this);
         }
 
-        public virtual void SelectTarget(IDamageable target) { }
+        public virtual void SelectTarget(AITarget target) { }
 
         public virtual void Update(float deltaTime) { }
 

Subsurface/Source/Characters/AI/EnemyAIController.cs

@@ -82,11 +82,10 @@ namespace Subsurface
             state = AiState.None;
         }
 
-        public override void SelectTarget(IDamageable target)
+        public override void SelectTarget(AITarget target)
         {
-            targetEntity = target;
-            selectedAiTarget = target.AiTarget;
-            selectedTargetMemory = FindTargetMemory(target.AiTarget);
+            selectedAiTarget = target;
+            selectedTargetMemory = FindTargetMemory(target);
 
             targetValue = 100.0f;
         }