/// <summary>
/// Called every frame from Robot.update() if it's the current state (top of the stack)
/// </summary>
/// <param name="r">The robot to update</param>
public override void update(Robot r)
{
bool finished = false;
////////////////////////////////////////////////////////////////////////////////////////
// Initialize variables if necessary when first enter state
////////////////////////////////////////////////////////////////////////////////////////
if (!initialized)
{
initialized = true;
if (r.carriedResource == null)
{
resume = true;
}
else
{
Log.e(LogTag.ROBOT, "Initializing RobotPlaceResource, but robot is already carrying object.");
finished = true;
}
}
////////////////////////////////////////////////////////////////////////////////////////
// Reset variables if robot is returning from another state
////////////////////////////////////////////////////////////////////////////////////////
if (resume)
{
resume = false;
Vector2 robotPosition = new Vector2(r.body.transform.position.x,
r.body.transform.position.z);
if (Vector2.Distance(robotPosition, position) > retrievalDistance)
{
r.pushState(new RobotStateTurn(position));
r.pushState(new RobotStateMove(position, retrievalDistance));
}
else
{
GameObject resource = r.getObjectInFront();
if (resource != null && resource.CompareTag("Resource"))
{
Log.w(LogTag.ROBOT, "Robot " + r.id + " has picked up " + resource.transform.name);
resource.transform.SetParent(r.body.transform);
resource.transform.position = new Vector3(r.body.transform.position.x, 1.5f, r.body.transform.position.z);
r.carriedResource = resource;
finished = true;
}
else
{
Log.e(LogTag.ROBOT, "Robot " + r.id + " isn't facing any resources");
r.pushState(new RobotStateSleep(2.0f)); // allow other robots to move out of the way
}
}
}
////////////////////////////////////////////////////////////////////////////////////////
// Update: intentionally empty
////////////////////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////////////////////
// Process messages: disabled here
////////////////////////////////////////////////////////////////////////////////////////
////////////////////////////////////////////////////////////////////////////////////////
// "Clean up" robot state
////////////////////////////////////////////////////////////////////////////////////////
if (finished)
{
r.popState();
}
}
