public void RefreshTree()
{
root = new DialogueNode();
root.AddNpcLine("How can I help you?");
root.AddPlayerLine("Wait I have more questions");
// first layer
DialogueNode oneOne = new DialogueNode();
root.addChild(oneOne);
oneOne.AddNpcLine("I am Bob Saget.");
oneOne.AddPlayerLine("Who are you?");
DialogueNode twoOne = new DialogueNode();
root.addChild(twoOne);
twoOne.AddNpcLine("I'm an actor! Haven't you heard of me?");
twoOne.AddPlayerLine("What do you do?");
twoOne.addChild(root);
}