RAGECOOP-V/Client/Scripts/Sync/SyncEvents.cs

using System;
using GTA;
using GTA.Math;
using Lidgren.Network;
using RageCoop.Client.Scripting;
using RageCoop.Core;

namespace RageCoop.Client
{
    internal static class SyncEvents
    {
        #region TRIGGER

        public static void TriggerPedKilled(SyncedPed victim)
        {
            Networking.SendSync(new Packets.PedKilled { VictimID = victim.ID }, ConnectionChannel.SyncEvents);
        }

        public static void TriggerChangeOwner(int vehicleID, int newOwnerID)
        {
            Networking.SendSync(new Packets.OwnerChanged
            {
                ID = vehicleID,
                NewOwnerID = newOwnerID
            }, ConnectionChannel.SyncEvents, NetDeliveryMethod.ReliableOrdered);
        }

        public static void TriggerBulletShot(SyncedPed owner, Vector3 impactPosition)
        {
            var hash = (uint)owner.MainPed.VehicleWeapon;
            if (hash == (uint)VehicleWeaponHash.Invalid)
                hash = (uint)owner.MainPed.Weapons.Current.Hash;

            Networking.SendBullet(owner.ID, hash, impactPosition);
        }

        public static void TriggerNozzleTransform(int vehID, bool hover)
        {
            Networking.SendSync(new Packets.NozzleTransform { VehicleID = vehID, Hover = hover },
                ConnectionChannel.SyncEvents);
        }

        #endregion

        #region HANDLE

        public static ParticleEffectAsset CorePFXAsset = new ParticleEffectAsset("core");

        private static void HandlePedKilled(Packets.PedKilled p)
        {
            EntityPool.GetPedByID(p.VictimID)?.MainPed?.Kill();
        }

        private static void HandleOwnerChanged(Packets.OwnerChanged p)
        {
            var v = EntityPool.GetVehicleByID(p.ID);
            if (v == null) return;
            v.OwnerID = p.NewOwnerID;
            v.SetLastSynced(true);
            v.Position = v.MainVehicle.Position;
            v.Quaternion = v.MainVehicle.Quaternion;
        }

        private static void HandleNozzleTransform(Packets.NozzleTransform p)
        {
            EntityPool.GetVehicleByID(p.VehicleID)?.MainVehicle?.SetNozzleAngel(p.Hover ? 1 : 0);
        }

        private static void HandleBulletShot(int ownerID, uint weaponHash, Vector3 end)
        {
            var c = EntityPool.GetPedByID(ownerID);
            var p = c?.MainPed;
            if (p == null)
            {
                return;
                // p = Game.Player.Character;
                // Main.Logger.Warning("Failed to find owner for bullet");
            }

            var damage = (int)p.GetWeaponDamage(weaponHash);

            // Some weapon hash has some firing issue, so we need to replace it with known good ones
            weaponHash = WeaponUtil.GetWeaponFix(weaponHash);

            // Request asset for muzzle flash
            if (!CorePFXAsset.IsLoaded) CorePFXAsset.Request();

            // Request asset for materialising the bullet
            var asset = new WeaponAsset(weaponHash);
            if (!asset.IsLoaded) asset.Request();

            bool isVeh = p.VehicleWeapon != VehicleWeaponHash.Invalid;
            var bone = c.GetMuzzleBone(isVeh);

            World.ShootBullet(bone.Position, end, p, asset, damage);

            World.CreateParticleEffectNonLooped(CorePFXAsset,
                !isVeh && p.Weapons.Current.Components.GetSuppressorComponent().Active
                    ? "muz_pistol_silencer"
                    : ((WeaponHash)weaponHash).GetFlashFX(isVeh), bone.Position, isVeh ? bone.GetRotation() : bone.Owner.Rotation);
        }

        public static void HandleEvent(PacketType type, NetIncomingMessage msg)
        {
            switch (type)
            {
                case PacketType.BulletShot:
                    {
                        var p = msg.GetPacket<Packets.BulletShot>();
                        HandleBulletShot(p.OwnerID, p.WeaponHash, p.EndPosition);
                        break;
                    }
                case PacketType.OwnerChanged:
                    {
                        HandleOwnerChanged(msg.GetPacket<Packets.OwnerChanged>());
                    }
                    break;
                case PacketType.PedKilled:
                    {
                        HandlePedKilled(msg.GetPacket<Packets.PedKilled>());
                    }
                    break;
                case PacketType.NozzleTransform:
                    {
                        HandleNozzleTransform(msg.GetPacket<Packets.NozzleTransform>());
                        break;
                    }
            }

            Networking.Peer.Recycle(msg);
        }

        #endregion

        #region CHECK EVENTS

        public static void Check(SyncedPed c)
        {
            var subject = c.MainPed;

            // Check bullets
            if (subject.IsShooting && !subject.IsUsingProjectileWeapon())
            {

                var i = 0;

                // Some weapon is not instant hit, so we may need to wait a few ticks to get the impact position
                bool getBulletImpact()
                {
                    var endPos = subject.LastWeaponImpactPosition;

                    // Impact found
                    if (endPos != default)
                    {
                        TriggerBulletShot(c, endPos);
                        return true;
                    }

                    // Not found, but it's shot from a vehicle
                    if (subject.VehicleWeapon != VehicleWeaponHash.Invalid)
                    {
                        var b = c.GetMuzzleBone(true);
                        TriggerBulletShot(c, b.Position + b.ForwardVector * 200);
                        return true;
                    }

                    // Get impact in next tick
                    if (++i <= 5) return false;

                    // Exceeded maximum wait of 5 ticks, return (inaccurate) aim coordinate
                    endPos = subject.GetAimCoord();
                    TriggerBulletShot(c, endPos);
                    return true;

                }

                if (!getBulletImpact()) API.QueueAction(getBulletImpact);
            }
        }

        public static void Check(SyncedVehicle v)
        {
            if (v.MainVehicle == null || !v.MainVehicle.HasNozzle()) return;

            if (v.LastNozzleAngle == 1 && v.MainVehicle.GetNozzleAngel() != 1)
                TriggerNozzleTransform(v.ID, false);
            else if (v.LastNozzleAngle == 0 && v.MainVehicle.GetNozzleAngel() != 0) TriggerNozzleTransform(v.ID, true);
            v.LastNozzleAngle = v.MainVehicle.GetNozzleAngel();
        }

        #endregion
    }
}