Explode.cs

// Expose explosion radius in inspector
public float ExplosionRadius;
    
private void OnTriggerEnter(Collider other)
{
    rocketProjectile.velocity = Vector3.zero;

    // See if we can find a PicaVoxel Volume object on the thing we just collided with
    var volume = other.GetComponentInParent<Volume>();
    if(volume!=null)
    {
        // We found a Volume, so explode!
        var batch = volume.Explode(transform.position, ExplosionRadius, 0, Exploder.ExplodeValueFilterOperation.GreaterThanOrEqualTo);
        if (batch.Voxels.Count > 0 && VoxelParticleSystem.Instance != null)
        {
            // Adjust these values to change the speed of the exploding particles
            var minExplodeSpeed = 1f;
            var maxExplodeSpeed = 2f;
            VoxelParticleSystem.Instance.SpawnBatch(batch, pos => (pos - transform.position).normalized * Random.Range(minExplodeSpeed, maxExplodeSpeed));
        }

    }

    Destroy(gameObject);
}

// No longer required
//void DetonateMissile()
//{
//    exploder.Explode();
//    Destroy(gameObject);
//}