private void OnStateEnter(CharacterControlState state)
{
// Clear our target when transitioning between states
targetInteraction = null;
// Only enable HUD animations if the character is human-controlled
enableInteractionUI = state is HumanCharacterControlState;
}
private void OnTriggerExit(Collider other)
{
InteractionZone interactable = other.GetComponent <InteractionZone>();
if (interactable)
{
interactablesInRange.Remove(interactable);
}
}
private void OnTriggerEnter(Collider other)
{
InteractionZone interactable = other.GetComponent <InteractionZone>();
if (interactable && !interactablesInRange.Contains(interactable))
{
interactablesInRange.Add(interactable);
}
}
private void ScanForTargets()
{
// Scan any interation zones in range to see which one can be used, if any.
InteractionZone previousTarget = targetInteraction;
targetInteraction = null;
if (interactablesInRange.Count == 1)
{
if (interactablesInRange[0].CanInteractionBeCalled(transform))
{
targetInteraction = interactablesInRange[0];
}
}
else if (interactablesInRange.Count > 1)
{
// Score each interactable in range based on how directly the player is facing it.
// Note that lowest score wins (because score is based primarily on distance)
float bestScore = 0f;
for (int i = 0; i < interactablesInRange.Count; i++)
{
InteractionZone interactable = interactablesInRange[i];
if (!interactable.CanInteractionBeCalled(transform))
{
continue;
}
float score = Vector3.Distance(transform.position, interactablesInRange[i].sourceTransform.position);
if (interactable.sourceTransform)
{
Vector3 directionToSource = (interactable.sourceTransform.position - transform.position).normalized;
float dot = Vector3.Dot(transform.forward, directionToSource);
score *= 1f - dot;
}
if (score < bestScore || targetInteraction == null)
{
bestScore = score;
targetInteraction = interactable;
}
}
}
// Show or hide the interaction prompt UI in the HUD when the player's target changes
if (HUD.instance && enableInteractionUI && targetInteraction != previousTarget)
{
if (targetInteraction)
{
string targetName = targetInteraction.GetTargetName();
string actionName = targetInteraction.GetActionName();
string preposition = targetInteraction.GetPreposition();
HUD.instance.ShowInteractionPrompt(actionName, preposition + " " + targetName);
}
else if (HUD.instance)
{
HUD.instance.HideInteractionPrompt();
}
}
// If this charater has an interaction UI arrow, update it to point out the target
if (!arrowUI && arrowUIPrefab)
{
arrowUI = Instantiate(arrowUIPrefab);
}
if (arrowUI)
{
if (targetInteraction && targetInteraction.uiTargetTransform)
{
arrowUI.SetActive(true);
arrowUI.transform.SetParent(targetInteraction.uiTargetTransform);
arrowUI.transform.localPosition = Vector3.zero;
arrowUI.transform.localScale = Vector3.one;
}
else
{
arrowUI.SetActive(false);
arrowUI.transform.SetParent(null);
}
}
}
