void Start()
{
sounds = GetComponent <AudioSource> ();
thwompCharacterController = this.GetComponent <CharacterController> ();
//Records the Thwomp's start position
startPosition = this.transform.position;
currentState = ThwompState.waitingToFall;
timer = 0f;
}
IEnumerator IDLE()
{
Debug.Log("Enter Idle State");
while (CurrentState == ThwompState.IDLE)
{
if (Vector3.Distance(Dan.transform.position, transform.position) < ActivationDistance)
{
CurrentState = ThwompState.CHASING;
}
yield return(null);
}
Debug.Log("Exit Idle State");
}
//This coroutine helps determine if the Thwomp has run into something
//(as an alternative to OnCollisionEnter(), which was giving me (Nick) some problems)
IEnumerator CheckIfMoving()
{
//Saves the current position of the Thwomp
Vector3 currentPos = this.transform.position;
//Waits a frame
yield return(0);
//Checks to see if the Thwomp is in the same position as it was a frame ago
if (currentPos == this.transform.position)
{
sounds.PlayOneShot(boom, 0.5f);
sounds.PlayOneShot(grunt, 1f);
//Tells the Thwomp to stop moving and to prepare to rise again
currentState = ThwompState.waitingToRise;
}
}
IEnumerator ATTACKING()
{
Debug.Log("Enter Attacking State");
while (CurrentState == ThwompState.ATTACKING)
{
var oldY = transform.position.y;
var newPosition = Vector3.MoveTowards(transform.position, Dan.transform.position, ThwompSpeed * Time.deltaTime);
transform.position = new Vector3(transform.position.x, newPosition.y, transform.position.z);
if (Math.Abs(transform.position.x - Dan.transform.position.x) > 0.5)
{
CurrentState = ThwompState.CHASING;
transform.position = new Vector3(transform.position.x, oldY, transform.position.z);
}
yield return(null);
}
Debug.Log("Exit Attacking State");
}
IEnumerator CHASING()
{
Debug.Log("Enter Chasing State");
yield return(new WaitForSeconds(ActivationDelay));
while (CurrentState == ThwompState.CHASING)
{
var newPosition = Vector3.MoveTowards(transform.position, Dan.transform.position, MoveSpeed * Time.deltaTime);
transform.position = new Vector3(newPosition.x, transform.position.y, transform.position.z);
if (Math.Abs(transform.position.x - Dan.transform.position.x) < 0.5)
{
CurrentState = ThwompState.ATTACKING;
}
yield return(null);
}
Debug.Log("Exit Chasing State");
}
void Update()
{
//STEP 1: Define ray
Ray thwompDetectionRay = new Ray(transform.position, new Vector3(0, -1, 0));
//STEP 2: Declare raycast distance
float rayDistance = 2f;
//STEP 3: Visualize the raycast
Debug.DrawRay(thwompDetectionRay.origin, thwompDetectionRay.direction * rayDistance, Color.yellow);
//If the Thwomp is wating to drop
if (currentState == ThwompState.waitingToFall)
{
//Tells the script that it's okay for the Thwomp to do damage to the player again
didDamage = false;
//Resets the Thwomp to it's starting position
this.GetComponent <Transform> ().position = startPosition;
//Ticks up the timer
timer += Time.deltaTime;
//Checks if it's time to drop yet
if (timer >= secondsToDrop)
{
//Resets the timer for the next drop
timer = 0f;
currentState = ThwompState.falling;
}
}
if (currentState == ThwompState.falling)
{
//Moves the Thwomp downward
thwompCharacterController.Move(Vector3.down * dropSpeed * Time.deltaTime);
Vector3 currentPos = this.transform.position;
//Checks if the Thwomp is still moving or if it has run into something
StartCoroutine(CheckIfMoving());
}
//If the Thwomp is wating to rise
if (currentState == ThwompState.waitingToRise)
{
//Ticks up the timer
timer += Time.deltaTime;
//Checks if it's time to rise back up yet
if (timer >= secondsToRise)
{
//Resets the timer for the next drop
timer = 0f;
currentState = ThwompState.rising;
}
}
if (currentState == ThwompState.rising)
{
//Moves the Thwomp upward
thwompCharacterController.Move(Vector3.up * risingSpeed * Time.deltaTime);
//Returns the Thwomp to waiting mode if it returns to it's original position
if (this.transform.position.y >= startPosition.y)
{
currentState = ThwompState.waitingToFall;
}
}
}
// Start is called before the first frame update
void Start()
{
CurrentState = ThwompState.IDLE;
StartCoroutine(ThwompFSM());
}