public void Update()
{
if (vision.CanSeePlayer())
{
timeGrannyLastSeen = Time.time;
}
if (path == null)
{
// We have no path to follow yet, so don't do anything
return;
}
// Check in a loop if we are close enough to the current waypoint to switch to the next one.
// We do this in a loop because many waypoints might be close to each other and we may reach
// several of them in the same frame.
reachedEndOfPath = false;
// The distance to the next waypoint in the path
float distanceToWaypoint;
while (true)
{
// If you want maximum performance you can check the squared distance instead to get rid of a
// square root calculation. But that is outside the scope of this tutorial.
distanceToWaypoint = Vector3.Distance(transform.position, path.vectorPath[currentWaypoint]);
if (distanceToWaypoint < nextWaypointDistance)
{
// Check if there is another waypoint or if we have reached the end of the path
if (currentWaypoint + 1 < path.vectorPath.Count)
{
currentWaypoint++;
}
else
{
// Set a status variable to indicate that the agent has reached the end of the path.
// You can use this to trigger some special code if your game requires that.
reachedEndOfPath = true;
break;
}
}
else
{
break;
}
}
// Slow down smoothly upon approaching the end of the path
// This value will smoothly go from 1 to 0 as the agent approaches the last waypoint in the path.
var speedFactor = reachedEndOfPath ? Mathf.Sqrt(distanceToWaypoint / nextWaypointDistance) : 1f;
// Direction to the next waypoint
// Normalize it so that it has a length of 1 world unit
Vector3 dir = (path.vectorPath[currentWaypoint] - transform.position).normalized;
// Multiply the direction by our desired speed to get a velocity
Vector3 velocity = dir * speed * speedFactor;
if (Time.time - timeGrannyLastSeen < this.followTime)
{
followingGranny = true;
path = null;
seeker.StartPath(transform.position, GrandmaController.GetInstance().transform.position, OnPathComplete);
}
else if (followingGranny && Time.time - timeGrannyLastSeen >= followTime)
{
followingGranny = false;
path = null;
seeker.StartPath(transform.position, targetPositions[targetPositionIndex].position, OnPathComplete);
}
else if (isDistracted && reachedEndOfPath)
{
velocity = dir * 0;
if (distractedTime == 0.0f)
{
distractedTime = Time.time;
}
else if (Time.time - distractedTime >= totalDistractedTime)
{
distractedTime = 0.0f;
isDistracted = false;
targetPositionIndex--;
PathToNextMarker();
}
}
else if (reachedEndOfPath)
{
path = null;
PathToNextMarker();
}
// Move the agent
// Note that SimpleMove takes a velocity in meters/second, so we should not multiply by Time.deltaTime
GetComponent <Rigidbody2D>().velocity = velocity;
}