/// <summary>
/// Runs a raycast to see what's under the selection point. Updates the selection and
/// calls the selection delegates if the selection has changed. If the player hits the
/// use button, sends an OnUse message to the selection.
/// </summary>
protected void Update()
{
// Exit if disabled or paused:
if (!enabled || (Time.timeScale <= 0))
{
return;
}
// Exit if there's no camera:
if (UnityEngine.Camera.main == null)
{
return;
}
// Exit if using mouse selection and is over a UI element:
if ((selectAt == SelectAt.MousePosition) && (UnityEngine.EventSystems.EventSystem.current != null) && UnityEngine.EventSystems.EventSystem.current.IsPointerOverGameObject())
{
return;
}
// Raycast 2D or 3D:
switch (runRaycasts)
{
case Dimension.In2D:
Run2DRaycast();
break;
default:
case Dimension.In3D:
Run3DRaycast();
break;
}
// If the player presses the use key/button on a target:
if (IsUseButtonDown() && (usable != null))
{
clickedDownOn = null;
if (distance <= usable.maxUseDistance)
{
// If within range, send the OnUse message:
var fromTransform = (actorTransform != null) ? actorTransform : this.transform;
if (broadcastToChildren)
{
usable.gameObject.BroadcastMessage("OnUse", fromTransform, SendMessageOptions.DontRequireReceiver);
}
else
{
usable.gameObject.SendMessage("OnUse", fromTransform, SendMessageOptions.DontRequireReceiver);
}
}
else
{
// Otherwise report too far if configured to do so:
if (!string.IsNullOrEmpty(tooFarMessage))
{
DialogueManager.ShowAlert(tooFarMessage);
}
tooFarEvent.Invoke();
}
}
}