koobas.hobune.stream
zombie AI help with implementation, look rotation viewing vector is zero
Hi guys!
I'm trying to implement an AIzombie.cs file that I imported into my project, unfortunately it so happens I'm dumb and I'm not sure how to do it correctly :( I'm sure there's a problem with the zombies rotation as I get the message: "look rotation viewing vector is zero" all in all my zombies are acting strange, as in they're not rotating and they're killing me on the spot in one hit if i come close :d
I will try to provide as much info as possible:
Zombie components:
-enemyController
public class enemyController : MonoBehaviour {
NavMeshAgent nav;
Transform player;
Animator controller;
float health;
GameManagement game;
CapsuleCollider capsuleCollider;
Animator anim;
int damage = 20;
bool isDead = false;
public AudioClip[] attackClips;
public AudioClip[] deathClips;
float attackTimer;
public float timeToAttack;
// Use this for initialization
public static void Awake () {
nav = GetComponent <NavMeshAgent> ();
player = GameObject.FindGameObjectWithTag("Player").transform;
controller = GetComponentInParent<Animator> ();
game = FindObjectOfType<GameManagement> ();
health = 40;
capsuleCollider = GetComponent <CapsuleCollider> ();
anim = GetComponent<Animator> ();
nav.speed = 0.2f + Random.Range (0f, 3f);
}
// Update is called once per frame
void Update () {
if (!isDead) {
nav.SetDestination (player.position);
controller.SetFloat ("speed", Mathf.Abs (nav.velocity.x) + Mathf.Abs (nav.velocity.z));
float distance = Vector3.Distance (transform.position, player.position);
if (distance < 3)
{
attackTimer += Time.deltaTime;
}
else if (attackTimer > 0)
{
anim.SetBool("Attack", false);
attackTimer -= Time.deltaTime*2;
}
else
{
attackTimer = 0;
anim.SetBool("Attack", false);
}
}
}
bool Attack()
{
if (!anim.GetBool ("Attack"))
anim.SetFloat("AttackType",Random.Range(0,2));
anim.SetBool ("Attack", true);
if (!audio.isPlaying)
{
audio.clip = attackClips[Random.Range (0,attackClips.Length-1)];
audio.Play();
}
if (attackTimer > timeToAttack)
{
attackTimer = 0;
return true;
}
return false;
}
void Death()
{
isDead = true;
nav.Stop ();
capsuleCollider.isTrigger = true;
anim.SetTrigger ("isDead");
audio.clip = deathClips[Random.Range (0,deathClips.Length-1)];
audio.Play();
GameManagement.zombiesLeftInGame -= 1;
Destroy (gameObject, 4f);
}
void ApplyDamage(float damage)
{
health -= damage;
if (!isDead)
{
if (health <= 0)
{
Death ();
}
}
}
void OnCollisionStay(Collision collisionInfo)
{
if (collisionInfo.gameObject.tag == "Player")
{
if(Attack())
{
collisionInfo.collider.SendMessageUpwards("PlayerDamage", damage, SendMessageOptions.RequireReceiver);
}
}
}
}
-nav mesh agent
-Capsule collider
-AIzombie
public class AIzombie : MonoBehaviour
{
public float speed = 2.0f;
public float rotationSpeed = 4.0f;
public float shootRange = 15.0f;
public float attackRange = 30.0f;
public float shootAngle = 4.0f;
public float dontComeCloserRange = 3.0f;
public float delayHitTime = 0.35f;
public float pickNextWaypointDistance = 2.0f;
public Transform target;
public float HitDistance = 0.0f;
public float damage = 0.0f;
public AudioClip attack;
private float lastShot = -10.0f;
private float walkSpeed = 1;
public GameObject anim;
void Start()
{
// Auto setup player as target through tags
if (target == null && GameObject.FindWithTag("Player"))
target = GameObject.FindWithTag("Player").transform;
StartCoroutine(Patrol());
// walkSpeed = speed;
// anim.animation.wrapMode = WrapMode.Loop;
// anim.animation["Fury"].wrapMode = WrapMode.Once;
}
public IEnumerator Patrol()
{
AutoWayPoint curWayPoint = AutoWayPoint.FindClosest(transform.position);
while (true)
{
Vector3 waypointPosition = curWayPoint.transform.position;
// Are we close to a waypoint? -> pick the next one!
if (Vector3.Distance(waypointPosition, transform.position) < pickNextWaypointDistance)
curWayPoint = PickNextWaypoint(curWayPoint);
// Attack the player and wait until
// - player is killed
// - player is out of sight
if (CanSeeTarget())
StartCoroutine("AttackPlayer");
// Move towards our target
MoveTowards(waypointPosition);
yield return 0;
}
}
public bool CanSeeTarget()
{
if (Vector3.Distance(transform.position, target.position) > attackRange)
return false;
RaycastHit hit;
if (Physics.Linecast(transform.position, target.position, out hit))
return hit.transform == target;
return false;
}
public IEnumerator Attack()
{
// Start shoot animation
// animation.CrossFade("hit", 0.3f);
//anim.animation.Rewind("Fury");
yield return new WaitForSeconds(delayHitTime);
target.SendMessage("PlayerDamage", damage);
// Wait until half the animation has played
// AudioSource.PlayClipAtPoint(attack, transform.position);
// Fire gun
//BroadcastMessage("Fire");
// Wait for the rest of the animation to finish
// yield return new WaitForSeconds(animation["hit"].length - delayShootTime);
yield return new WaitForSeconds(0.2f);
// animation.CrossFade("hit", 0.3f);
}
public IEnumerator AttackPlayer()
{
Vector3 lastVisiblePlayerPosition = target.position;
while (true)
{
if (CanSeeTarget())
{
// Target is dead - stop hunting
if (target == null)
yield break;
// Target is too far away - give up
float distance = Vector3.Distance(transform.position, target.position);
if (distance > shootRange * 2)
yield break;
lastVisiblePlayerPosition = target.position;
if (distance > dontComeCloserRange)
MoveTowards(lastVisiblePlayerPosition);
else
RotateTowards(lastVisiblePlayerPosition);
Vector3 forward = transform.TransformDirection(Vector3.forward);
Vector3 targetDirection = lastVisiblePlayerPosition - transform.position;
targetDirection.y = 0;
float angle = Vector3.Angle(targetDirection, forward);
// Start shooting if close and play is in sight
if (distance < HitDistance && angle < shootAngle)
StartCoroutine("Attack");
}
else
{
StartCoroutine("SearchPlayer", lastVisiblePlayerPosition);
// Player not visible anymore - stop attacking
if (!CanSeeTarget())
yield break;
}
yield return 0;
}
}
public IEnumerator SearchPlayer(Vector3 position)
{
// Run towards the player but after 3 seconds timeout and go back to Patroling
float timeout = 5.0f;
while (timeout > 0.0f)
{
MoveTowards(position);
// We found the player
if (CanSeeTarget())
yield break;
timeout -= Time.deltaTime;
yield return 0;
}
}
public void RotateTowards(Vector3 position)
{
// SendMessage("SetSpeed", 0.0f);
Vector3 direction = position - transform.position;
direction.y = 0;
if (direction.magnitude < 0.1f)
return;
// Rotate towards the target
transform.rotation = Quaternion.Slerp(transform.rotation, Quaternion.LookRotation(direction), rotationSpeed * Time.deltaTime);
transform.eulerAngles = new Vector3(0, transform.eulerAngles.y, 0);
}
public void MoveTowards(Vector3 position)
{
Vector3 direction = position - transform.position;
direction.y = 0;
/* if (direction.magnitude < 0.5f)
{
anim.animation.CrossFade("idle");
return;
}*/
// Rotate towards the target
transform.rotation = Quaternion.Slerp(transform.rotation, Quaternion.LookRotation(direction), rotationSpeed * Time.deltaTime);
transform.eulerAngles = new Vector3(0, transform.eulerAngles.y, 0);
// Modify speed so we slow down when we are not facing the target
Vector3 forward = transform.TransformDirection(Vector3.forward);
float speedModifier = Vector3.Dot(forward, direction.normalized);
speedModifier = Mathf.Clamp01(speedModifier);
//Move the character
direction = forward * speed * speedModifier;
GetComponent<CharacterController>().SimpleMove(direction);
}
AutoWayPoint PickNextWaypoint(AutoWayPoint currentWaypoint)
{
// We want to find the waypoint where the character has to turn the least
// The direction in which we are walking
Vector3 forward = transform.TransformDirection(Vector3.forward);
// The closer two vectors, the larger the dot product will be.
AutoWayPoint best = currentWaypoint;
float bestDot = -10.0f;
foreach (AutoWayPoint cur in currentWaypoint.connected)
{
Vector3 direction = Vector3.Normalize(cur.transform.position - transform.position);
float dot = Vector3.Dot(direction, forward);
if (dot > bestDot && cur != currentWaypoint)
{
bestDot = dot;
best = cur;
}
}
return best;
}
void OnDrawGizmosSelected()
{
Gizmos.color = Color.yellow;
Gizmos.DrawWireSphere(transform.position, attackRange);
Gizmos.color = Color.red;
Gizmos.DrawWireSphere(transform.position, HitDistance);
}
}
-auto way point.cs
-character controller
I probably made a mess implementing it, didn't find some of the animations in the files so i just commented them out, maybe they AI is having problems with my enemycontroller? Thank you all in advance for the help and again, sorry for the mess, i'm learning :P
i get the rotation message for the following line: transform.rotation = Quaternion.Slerp(transform.rotation, Quaternion.LookRotation(direction), rotationSpeed * Time.deltaTime); transform.eulerAngles = new Vector3(0, transform.eulerAngles.y, 0);
