RaycastPlate.cs

using System;
using GTA;
using GTA.Math;
using GTA.Native;

public class Raycast : Script
{
    public Raycast()
    {
        Tick += OnTick;
    }

    void OnTick(object sender, EventArgs e)
    {
        Ped player = Game.Player.Character;
        if (!player.IsInVehicle())
        {
            return;
        }
        Vehicle vehicle = player.CurrentVehicle;
        float searchdist = 30.0f;
        Vector3 vehPos = vehicle.Position;
        Vector3 vehDir = vehicle.ForwardVector;
        Vector3 vehFor = vehPos + (vehDir * searchdist);
        int ray = Function.Call<int>(Hash._CAST_RAY_POINT_TO_POINT, vehPos.X, vehPos.Y, vehPos.Z, vehFor.X, vehFor.Y, vehFor.Z, 10, vehicle, 7);

        OutputArgument hit = new OutputArgument();
        OutputArgument endcoords = new OutputArgument();
        OutputArgument surfacenormal = new OutputArgument();
        OutputArgument entityHit = new OutputArgument();
        Function.Call(Hash._GET_RAYCAST_RESULT, ray, hit, endcoords, surfacenormal, entityHit);
        Vehicle hitVehicle = entityHit.GetResult<Vehicle>();
        Vector3 hitVehPos = hitVehicle.Position;

        OutputArgument x = new OutputArgument();
        OutputArgument y = new OutputArgument();
        bool success = Function.Call<bool>(Hash._WORLD3D_TO_SCREEN2D, hitVehPos.X, hitVehPos.Y, hitVehPos.Z, x, y);
        if (success && hitVehicle.Exists())
        {
            string name = hitVehicle.FriendlyName;
            string numplate = hitVehicle.NumberPlate;
            string text = "^\n" + name + "\n" + numplate + "\n";

            Function.Call(Hash.SET_TEXT_FONT, 0);
            Function.Call(Hash.SET_TEXT_SCALE, 0.2, 0.2);
            Function.Call(Hash.SET_TEXT_COLOUR, 255, 255, 255, 255);
            Function.Call(Hash.SET_TEXT_WRAP, 0.0, 1.0);
            Function.Call(Hash.SET_TEXT_CENTRE, 0);
            Function.Call(Hash.SET_TEXT_DROPSHADOW, 0, 0, 0, 0, 0);
            Function.Call(Hash.SET_TEXT_EDGE, 1, 0, 0, 0, 205);
            Function.Call(Hash._SET_TEXT_ENTRY, "STRING");
            Function.Call(Hash._ADD_TEXT_COMPONENT_STRING, text);
            Function.Call(Hash._DRAW_TEXT, x.GetResult<float>(), y.GetResult<float>());
            Function.Call(Hash.DRAW_RECT, x.GetResult<float>() + 0.027f, y.GetResult<float>() + 0.043f, 0.058f, 0.056f,
                75, 75, 75, 175);
        }
    }
}