SanAndreasUnity/Assets/Scripts/Behaviours/Projectile.cs

using SanAndreasUnity.Behaviours.Vehicles;
using SanAndreasUnity.Net;
using SanAndreasUnity.Utilities;
using UnityEngine;
using Object = UnityEngine.Object;

namespace SanAndreasUnity.Behaviours
{
    public class Projectile : MonoBehaviour
    {
        public GameObject explosionPrefab;
        public float explosionDamageAmount = 1000;
        public float explosionDamageRadius = 5;
        public LayerMask collisionLayerMask;
        public float speed = 10;
        public float lifeTime = 30;

        private bool m_alreadyExploded = false;
        private Rigidbody m_rigidBody;
        private AudioSource m_audioSource;


        public static Projectile Create(
            GameObject prefab, Vector3 position, Quaternion rotation, AudioClip audioClip)
        {
            var go = Instantiate(prefab, position, rotation);

            var projectile = go.GetComponentOrThrow<Projectile>();

            if (audioClip != null)
            {
                projectile.m_audioSource.clip = audioClip;
                projectile.m_audioSource.Play();
            }



            return projectile;
        }

        void Awake()
        {
            m_rigidBody = this.GetComponentOrThrow<Rigidbody>();
            m_audioSource = this.GetComponentOrThrow<AudioSource>();
        }

        private void Start()
        {
            Destroy(this.gameObject, this.lifeTime);
            m_rigidBody.velocity = this.transform.forward * this.speed;
        }

        private void OnCollisionEnter(Collision other)
        {
            if (m_alreadyExploded)
                return;

            if (((1 << other.gameObject.layer) & this.collisionLayerMask.value) == 0)
                return;

            m_alreadyExploded = true;

            Object.Destroy(this.gameObject);

            Vector3 contactPoint = other.contacts[0].point;

            // inflict damage to nearby objects
            Damageable.InflictDamageToObjectsInArea(
                contactPoint,
                this.explosionDamageRadius,
                this.explosionDamageAmount,
                VehicleManager.Instance.explosionDamageOverDistanceCurve,
                DamageType.Explosion);

            // create explosion - this includes effects, physics force, sound

            GameObject explosionGo = Object.Instantiate(
                this.explosionPrefab,
                contactPoint,
                this.transform.rotation);

            if (NetStatus.IsServer)
                NetManager.Spawn(explosionGo);

            // assign explosion sound
            F.RunExceptionSafe(() => Vehicle.AssignExplosionSound(explosionGo));

        }
    }
}