private void Update()
{
Vector3 muzzlePos = muzzle.position;
float reticleDistance = defaultReticleDistance;
float yawAngle = GetYawAngle();
float pitchAngle = GetPitchAngle();
float targetYawAngle = 0;
float targetPitchAngle = 0;
Vector3 targetPoint = Vector3.zero;
if (m_target == null || !m_target.Alive || !TryComputeAnglesToTarget(out targetYawAngle, out targetPitchAngle, targetPoint = m_target.GetAimPoint()))
{
// No target or lost target -- try to acquire a new one
m_lockedOn = false;
m_target = null;
Destructible[] enemies = GameObject.FindObjectsOfType <Destructible>();
MathHelpers.Cone aimingCone = new MathHelpers.Cone(muzzlePos, muzzle.forward, 1.5f, 45);
float minDistance = float.PositiveInfinity;
foreach (Destructible enemy in enemies)
{
if (!enemy.gameObject.CompareTag("Enemy") || !enemy.Alive)
{
continue;
}
Vector3 enemyPos = enemy.GetAimPoint();
float distanceFromAxis;
if (aimingCone.Contains(enemyPos) && (distanceFromAxis = aimingCone.DistanceFromAxis(enemyPos)) < minDistance)
{
minDistance = distanceFromAxis;
m_target = enemy;
}
}
// Try to compute aiming angles for new target
if (m_target != null && !TryComputeAnglesToTarget(out targetYawAngle, out targetPitchAngle, targetPoint = m_target.GetAimPoint()))
{
m_target = null;
}
}
// If we are not locked on, take a step toward new angles
if (!m_lockedOn)
{
float angleStep = angularVelocity * Time.deltaTime;
float deltaYawAngle = targetYawAngle - yawAngle;
float deltaPitchAngle = targetPitchAngle - pitchAngle;
yawAngle += deltaYawAngle >= 0 ? Mathf.Min(angleStep, deltaYawAngle) : Mathf.Max(-angleStep, deltaYawAngle);
pitchAngle += deltaPitchAngle >= 0 ? Mathf.Min(angleStep, deltaPitchAngle) : Mathf.Max(-angleStep, deltaPitchAngle);
if (m_target != null && Mathf.Abs(targetPitchAngle - pitchAngle) < 1e-1f && Mathf.Abs(targetYawAngle - yawAngle) < 1e-1f)
{
m_lockedOn = true;
}
}
else
{
// When locked on, instaneously track target
yawAngle = targetYawAngle;
pitchAngle = targetPitchAngle;
reticleDistance = Vector3.Distance(targetPoint, muzzlePos);
}
// Update gun orientation
if (gunYaw == gunPitch)
{
gunYaw.localRotation = Quaternion.Euler(pitchAngle, yawAngle, 0);
}
else
{
gunYaw.localRotation = Quaternion.Euler(0, yawAngle, 0);
gunPitch.localRotation = Quaternion.Euler(pitchAngle, 0, 0);
}
if (targetingReticle != null)
{
targetingReticle.LockedOn = m_lockedOn;
targetingReticle.transform.position = muzzlePos + muzzle.forward * reticleDistance;
}
}