// Use this for initialization
void Start()
{
player = GameObject.FindGameObjectWithTag("Player");
buddy = GameObject.FindGameObjectWithTag("buddy");
state = WASP_STATE.IDLE;
anim = GetComponent <Animator>();
agent = GetComponent <NavMeshAgent>();
waspCurrentHealth = GetComponent <EnemyHealth>().enemyHealth;
crumbCounter = 0;
canSeePlayer = false;
Vector3 inititalPosition = transform.position; //I store the wasps starting position so it knows where to return to
initialRotation = transform.rotation; // I also make it return to its original rotation so it doesnt end up facing a wall
healthManager = GameObject.FindGameObjectWithTag("GUI_Controller");
/*
* As the wasps in the game can be summoned by the plants, I add all the plants to an array.
*/
foreach (GameObject enemy in GameObject.FindGameObjectsWithTag("plant"))
{
GameObject plant = enemy.transform.parent.gameObject;
plants.Add(plant);
}
}
// Update is called once per frame
void Update()
{
distanceToPlayer = Vector3.Distance(transform.position, player.transform.position);
distanceToBuddy = Vector3.Distance(transform.position, buddy.transform.position);
float distanceToClosestFoe = Mathf.Min(distanceToBuddy, distanceToPlayer); //compares distance to player and distance to buddy
waspCurrentHealth = GetComponent <EnemyHealth>().enemyHealth;
/*
* If the wasps health goes below 0, it is dead and I change its state
*/
if (waspCurrentHealth <= 0)
{
state = WASP_STATE.DEAD;
}
RaycastHit hit;
Vector3 castToPlayer = player.transform.position - transform.position;
Vector3 raycastStartPosition = new Vector3(transform.position.x, transform.position.y + 1.0f, transform.position.z);
Debug.DrawRay(raycastStartPosition, castToPlayer, Color.magenta);
/*
* I decided to make the wasps more determined to kill the player than to kill the players buddy, and so when
* the wasps see the player, they immediately start moving towards it. When the wasp can see the player it
* changes the canSee varible to true. When this is true, the waps starts dropping breadcrumbs as it moves.
*/
if (Physics.Raycast(raycastStartPosition, castToPlayer, out hit, rayLength))
{
if (hit.collider.gameObject.tag == "Player")
{
canSeePlayer = true; //wasp starts dropping breadcrumbs when this is true
agent.SetDestination(player.transform.position);
transform.LookAt(player.transform.position);
}
else
{
canSeePlayer = false;
returnToStartingPosition();
}
}
/*
* If the player or buddy is in range of the wasp, it faces them and starts attacking with its stinger.
*/
if (distanceToClosestFoe <= 3.5f)
{
anim.SetBool("Moving", false);
anim.SetBool("Idle", false);
anim.SetTrigger("Attack"); //when in range of whoever is getting attacked, attack.
if (distanceToClosestFoe == distanceToBuddy)
{
transform.LookAt(buddy.transform.position);
healthManager.SendMessage("BuddyTakeDamage", damage, SendMessageOptions.DontRequireReceiver);
}
else
{
healthManager.SendMessage("PlayerTakeDamage", damage, SendMessageOptions.DontRequireReceiver);
}
}
/*
* When this is truem, the wasp can see the player and so it starts dropping breadcrumbs as it moves towards it
*/
if (canSeePlayer == true)
{
hasMoved = true;
if (breadCrumbs.Count > 1)
{
/*
* Breadcrumbs are only dropped when the wasp has travelled a certain distance from the last crumb
*/
if (Vector3.Distance(transform.position, breadCrumbs[breadCrumbs.Count - 1].transform.position) > 5f)
{
dropBreadCrumb();
}
}
else
{
dropBreadCrumb();
}
}
/*
* If the wasp can no longer see the player, but has moved from its initial starting position, then the
* returnToStartingPosition() function is called. This function makes the wasp track back through the breadcrumbs
* it has dropped to get back to its starting position.
*/
if (canSeePlayer == false && hasMoved)
{
returnToStartingPosition();
}
switch (state)
{
case WASP_STATE.IDLE:
anim.SetBool("Moving", false);
break;
/*
* The code for this is actually called when the plant sees the player. When the plany sees the player it
* calls out to the wasps. Any wasps in range of the plant set their destination to be the plants position
* so I ended up not having to do the code here.
*/
case WASP_STATE.BEING_SUMMONED:
break;
case WASP_STATE.ATTACKING:
break;
/*
* When the wasp is dead, I stop playing any animations that are already playing, and I play the death
* animation. I then call the Die() function which removes the dead wasp gameobject.
*/
case WASP_STATE.DEAD:
collider.enabled = false;
anim.SetBool("IDLE", false);
anim.SetBool("Attack", false);
agent.SetDestination(transform.position);
anim.SetTrigger("Die");
StartCoroutine("Die");
break;
}
}
