I have a homing missile script that seems to work 99% of the time, but every so often one of the missiles will start spiralling out of control and not towards the player. I can't see any reason for it, I can't see a reason for the behaviour in the code and I'm after a pair of fresh eye's to take a look and see if I'm missing something obvious. The script below is attached to each missile.
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using System.Linq;
public class missileControl : MonoBehaviour
{
public Transform missileTarget;
public GameObject indicator;
private int scorePerHit = 1;
private int scorePerDestroy = 50;
private int hits = 1;
[Header("Enemy Culling Variables")]
[HideInInspector]
public float distanceToCull = 4f;
[HideInInspector]
private Transform spaceShip;
public Rigidbody missileRigidbody;
[Header("Missile Control Variables")]
public float turn = 0.9f;
private float initialTurn = 0.9f;
public float missileVelocity = 95f;
private float initialMissileVelocity = 95f;
private Vector3 resetMissileVelocity = new Vector3(0f,0f,0f);
private Transform myTransform;
private float wiggleMultiplyer = 40f;
[Header("Firing Audio")]
public float minPitch = 0.9f;
public float maxPitch = 1f;
public AudioClip indicatorClip;
public TrailRenderer trailRenderer;
private bool indicatorOff = true;
private float currentDistance = 100f;
public float indicatorDist = 300f;
private IEnumerator delayAimTimer;
private void Start()
{
spaceShip = LevelVariables.currentLevelVariables.spaceShip.transform; // Player to test if behind
missileTarget = LevelVariables.currentLevelVariables.playerTarget.transform; // Target
missileRigidbody.velocity = resetMissileVelocity;
ResetVariables();
}
private void OnEnable()
{
ResetVariables();
}
private void OnDisable()
{
missileRigidbody.velocity = resetMissileVelocity;
}
void ResetVariables()
{
trailRenderer.enabled = false;
StartCoroutine(DelayTrails());
indicatorOff = true;
turn = Random.Range(initialTurn * 0.85f, initialTurn * 1.15f);
wiggleMultiplyer = Random.Range(0 - (wiggleMultiplyer), wiggleMultiplyer);
missileRigidbody.velocity = resetMissileVelocity;
missileVelocity = Random.Range(initialMissileVelocity * 0.85f, initialMissileVelocity * 1.15f);
missileRigidbody.velocity = transform.forward * missileVelocity;
}
IEnumerator DelayTrails()
{
yield return new WaitForSeconds(0.15f);
trailRenderer.Clear();
trailRenderer.enabled = true;
}
private void FixedUpdate()
{
if (GameStateController.gameStateController.gameState == GameStateController.GameState.PLAYERSTART)
{
if (Vector3.Angle((gameObject.transform.position - spaceShip.position), spaceShip.transform.forward) > 90)
{
if ((gameObject.transform.position - spaceShip.position).sqrMagnitude > distanceToCull * distanceToCull)
{
KillEnemy();
return;
}
}
else
{
if (indicatorOff)
{
currentDistance = Vector3.Distance(missileTarget.position, transform.position);
if (currentDistance <= indicatorDist)
{
indicator.SetActive(true);
PlayAudioSound(indicatorClip);
indicatorOff = false;
}
}
//missileRigidbody.velocity = (transform.forward * missileVelocity) + (transform.right * (Mathf.Sin(Time.time) * wiggleMultiplyer)) + (transform.up * (Mathf.Cos(Time.time) * wiggleMultiplyer));
missileRigidbody.velocity = transform.forward * missileVelocity;
var rocketTargetRotation = Quaternion.LookRotation(missileTarget.position - transform.position);
missileRigidbody.MoveRotation(Quaternion.RotateTowards(transform.rotation, rocketTargetRotation, turn));
}
}
else
{
StartCoroutine(DestroyGameObject(gameObject, 0f));
}
}
void OnCollisionEnter(Collision hit)
{
switch (hit.gameObject.tag)
{
case "environment":
KillEnemy();
break;
case "enemy":
KillEnemy();
break;
case "enemyBullet":
break;
case "player":
CameraShake.Shake(1f, 0.25f);
float deathScale = Random.Range(5f * transform.localScale.x, 10f * transform.localScale.x);
GameObject fx = ObjectPooler.currentPool.enemyHits.Spawn();
if (fx == null) return;
fx.transform.position = transform.position;
fx.transform.rotation = Quaternion.identity;
fx.transform.parent = hit.transform;
fx.transform.localScale = new Vector3(deathScale, deathScale, deathScale);
fx.SetActive(true);
KillEnemy();
break;
case "playerBullet":
ProcessHit();
if (hits < 1)
{
LevelVariables.currentLevelVariables.scoreBoard.ScoreHit(scorePerDestroy);
KillEnemy();
}
break;
}
}
private void ProcessHit()
{
LevelVariables.currentLevelVariables.scoreBoard.ScoreHit(scorePerHit);
hits = hits - 1;
}
private void KillEnemy()
{
GameObject fx = ObjectPooler.currentPool.enemyDeath.Spawn();
if (fx == null) return;
fx.transform.position = transform.position;
fx.transform.rotation = Quaternion.identity;
fx.transform.parent = LevelVariables.currentLevelVariables.spawnParent;
float deathScale = 1f;
deathScale = Random.Range(1f * transform.localScale.x, 4f * transform.localScale.x);
fx.transform.localScale = new Vector3(deathScale, deathScale, deathScale);
fx.SetActive(true);
StartCoroutine(DestroyGameObject(gameObject, 0f));
}
public void PlayAudioSound(AudioClip clip)
{
LevelVariables.currentLevelVariables.computerAudioSource.volume = 1f;
LevelVariables.currentLevelVariables.computerAudioSource.PlayOneShot(clip);
}
IEnumerator DestroyGameObject(GameObject turnOffObject, float waitTime)
{
yield return new WaitForSeconds(waitTime);
trailRenderer.Clear();
trailRenderer.enabled = false;
turnOffObject.Recycle();
}
}
The section below is the code for creating the missile and is part of the enemy weapon firing script.
GameObject missileObj = ObjectPooler.currentPool.destroyerMissileAmmo.Spawn();
if (missileObj == null) yield break;
CreateMuzzleFlash(muzzleLocation);
//LevelVariables.currentLevelVariables.globalMissileAmount = LevelVariables.currentLevelVariables.globalMissileAmount + 1;
missileObj.transform.localScale = new Vector3(2f, 2f, 2f);
missileObj.transform.position = muzzleLocation.transform.position;
missileObj.transform.rotation = muzzleLocation.transform.rotation;
//missileObj.transform.LookAt(m_target.transform);
missileObj.SetActive(true);
I don't see any problems with this code that would cause a missile not to head towards the player, does anyone have any idea's
