void OnMouseOverNPC(NpcAI npc)
{
if (Input.GetMouseButton(0) && IsTargetInRange(npc.gameObject))
{
talkTo = npc.GetComponent <DialogueSystem>();
talkTo.Talk(npc.gameObject);
}
if (Input.GetMouseButton(0) && !IsTargetInRange(npc.gameObject))
{
StartCoroutine(MoveAndTalk(npc));
}
}
