/// <summary>
/// Dialog works like this:
///
/// We start by pulling a root node from the DialogTree,
/// which has its own logic to determine the root node.
///
/// We walk down the dialog tree,
/// performing all callbacks BEFORE showing the current Saying
///
/// After displaying a Saying node, we check if it was a EndBranch node,
/// and if it was, we reset the CurrentSaying by pulling from the DialogTree again.
///
/// If the dialog tree has nothing for us and gives null, we carry on without modifying CurrentSaying.
/// </summary>
/// <param name="player"></param>
public override void Action(PlayerInteract player)
{
if (this.currentSaying == null)
{
return;
}
// before anything else, perform the callback
if (this.currentSaying.sayingCallback != null)
{
this.currentSaying.sayingCallback.callBackMethod(player, this);
}
player.ShowText(this.currentSaying.Text, this.currentSaying.Font, FontSize(this.currentSaying.Font));
if (this.currentSaying.IsEndBranch && this.DialogTree != null)
{
this.currentSaying = this.DialogTree;
}
else if (!this.currentSaying.DoesSayingBranch)
{
this.currentSaying = this.currentSaying.NextSaying;
}
else
{
// this saying requests a yes/no answer from the player
// the callback with advance to the next Saying based on response
player.TryRegisterHeadNodCallback(this);
}
}