private void Update()
{
if (currentInteractible != null)
{
if (closestIndicatorSprite != null)
{
closestIndicatorSprite.enabled = false;
}
return;
}
if (interactibles.Count > 0)
{
PhysicalInteractible interactible = GetClosest();
if (closestInteractible != interactible)
{
UpdateCurrentInteractible(interactible);
UpdateCurrentIndicator();
}
UpdateIndicatorVisibility();
}
}
public static void AddInteractible(PhysicalInteractible interactible)
{
if (!interactibles.Contains(interactible))
{
interactibles.Add(interactible);
}
}
/// <summary>
/// Remove the current interactible.
/// </summary>
private static void RemoveCurrentInteractible()
{
if (closestIndicator != null)
{
closestInteractible = null;
closestInteractibleSprite = null;
}
}
public static void RemoveInteractible(PhysicalInteractible interactible)
{
interactibles.Remove(interactible);
if (interactibles.Count == 0)
{
RemoveCurrentInteractible();
RemoveCurrentIndicator();
}
}
/// <summary>
/// Retrieves the closest interactible object that the player is close enough to interact with.
/// </summary>
/// <returns>The closest interactible object.</returns>
private PhysicalInteractible GetClosest()
{
if (interactibles.Count == 0)
{
return(null);
}
PhysicalInteractible closest = interactibles[0];
float closestDist = DistanceFromPlayer(closest);
foreach (PhysicalInteractible next in interactibles)
{
float dist = DistanceFromPlayer(next);
if (dist < closestDist)
{
closest = next;
closestDist = dist;
}
}
return(closest);
}
/// <summary> /// Remove an object from the list of objects the player is close enough to interact with. /// </summary> /// <param name="interactible">The object to remove.</param> void IInteractionComponent.RemoveInteractible(PhysicalInteractible interactible) => InteractionComponent.RemoveInteractible(interactible);
/// <summary> /// Add an object to the list of objects the player is close enough to interact with. /// </summary> /// <param name="interactible">The object to add.</param> void IInteractionComponent.AddInteractible(PhysicalInteractible interactible) => InteractionComponent.AddInteractible(interactible);
/// <summary>
/// Set information about the current interactible.
/// </summary>
/// <param name="interactible">The interactible to set.</param>
private void SetCurrentInteractible(PhysicalInteractible interactible)
{
closestInteractible = interactible;
closestInteractibleSprite = closestInteractible.GetComponent <SpriteRenderer>();
}
/// <summary>
/// Update the current interactible information.
/// </summary>
/// <param name="interactible">The interactible to set.</param>
private void UpdateCurrentInteractible(PhysicalInteractible interactible)
{
RemoveCurrentInteractible();
SetCurrentInteractible(interactible);
}
/// <summary>
/// How far away an interactible is from the player.
/// </summary>
/// <param name="interactible">The interactible to check.</param>
/// <returns>The distance from the center of the player to the center of the
/// interactible.</returns>
private float DistanceFromPlayer(PhysicalInteractible interactible)
{
return((interactible.Center - (Vector2)playerCollider.bounds.center).magnitude);
}
/// <summary>
/// Whether or not the player can carry this game object.
/// </summary>
/// <param name="obj">The object to check.</param>
/// <returns>True if the object can be carried. False otherwise.</returns>
public bool CanCarry(GameObject obj)
{
PhysicalInteractible interactible = obj.GetComponent <PhysicalInteractible>();
return((interactible != null) && (interactible is Carriable));
}
/// <summary> /// Remove an object from the list of objects the player is close enough to interact with. /// </summary> /// <param name="interactible">The object to remove.</param> public void RemoveInteractible(PhysicalInteractible interactible) => Interaction.RemoveInteractible(interactible);
/// <summary> /// Add an object to the list of objects the player is close enough to interact with. /// </summary> /// <param name="interactible">The object to add.</param> public void AddInteractible(PhysicalInteractible interactible) => Interaction.AddInteractible(interactible);