void Start()
{
rb = GetComponent <Rigidbody>();
batAIState = BatAIState.hittingBall;
GameUtils.playState = GameUtils.GamePlayState.SettingBall;
oppoGoalTransform = GameObject.FindGameObjectWithTag("SouthGoal").transform;
}
// Update is called once per frame
void Update()
{
//It is AI serve
if (GameUtils.playState == GameUtils.GamePlayState.SettingBall)
{
GoHome();
}
else if (GameUtils.playState == GameUtils.GamePlayState.BallSet)
{
hitPosition = GameObject.FindGameObjectWithTag("Ball").transform.position;
}
else if (GameUtils.playState == GameUtils.GamePlayState.InPlay)
{
if (batAIState == BatAIState.hittingBall)
{
HitBall();
}
else if (batAIState == BatAIState.atHitPosition)
{
GoHome();
}
else if (batAIState == BatAIState.atHome && AIColliderScript.ballInZone)
{
hitPosition = GameObject.FindGameObjectWithTag("Ball").transform.position;
batAIState = BatAIState.hittingBall;
}
}
}
private void OnCollisionEnter(Collision collision)
{
if (collision.gameObject.tag == "Ball")
{
batAIState = BatAIState.atHitPosition;
var inverseBallSpeed = Mathf.Min(Mathf.Max(Math.Abs(collision.rigidbody.velocity.z), ballHitSpeed), 100);
if (collision.rigidbody.velocity.z > 0)
{
inverseBallSpeed *= -1;
}
var rbVelocityInverse = new Vector3(collision.rigidbody.velocity.x * -1, 0, inverseBallSpeed * 1.5f * -1);
collision.rigidbody.velocity = rbVelocityInverse;
}
}
/// <summary>
/// Sends the AI bat to attempt to hit a ball
/// </summary>
private void HitBall()
{
float ballX = hitPosition.x,
ballZ = hitPosition.z;
if (ballX != transform.position.x || ballZ != transform.position.z)
{
rb.position = Vector3.MoveTowards(transform.position,
new Vector3(ballX, transform.position.y, ballZ),
aiSpeed * Time.deltaTime);
transform.LookAt(oppoGoalTransform);
}
else
{
batAIState = BatAIState.atHitPosition;
}
}
/// <summary>
/// Sends the AI bat back to the home position after hitting a ball
/// </summary>
private void GoHome()
{
if (AIColliderScript.difficulty == 0)
{
rb.position = Vector3.MoveTowards(transform.position, new Vector3(0, 4.5f, 128f), aiSpeed / 1.5f * Time.deltaTime);
}
else if (AIColliderScript.difficulty == 1)
{
rb.position = Vector3.MoveTowards(transform.position, new Vector3(0, 4.5f, 128f), aiSpeed / 1.2f * Time.deltaTime);
}
else
{
rb.position = Vector3.MoveTowards(transform.position, new Vector3(0, 4.5f, 128f), aiSpeed * 1.5f * Time.deltaTime);
}
homePosition = new Vector3(0, 4.5f, 128f);
if (rb.position == homePosition)
{
batAIState = BatAIState.atHome;
}
}