HideBlips

using GTA;
using GTA.Native;
using System;
using System.Windows.Forms;

namespace HideBlips
{
    public class Main : Script
    {
        public Main()
        {
            Tick += OnTick;
        }

        Blip GetFirstBlipInfoId(int blipSprite)
        {
            return Function.Call<Blip>(Hash.GET_FIRST_BLIP_INFO_ID, blipSprite);
        }

        Blip GetNextBlipInfoId(int blipSprite)
        {
            return Function.Call<Blip>(Hash.GET_NEXT_BLIP_INFO_ID, blipSprite);
        }

        void SetBlipVisible(Blip blip, int alpha, int displayId, float scale)
        {
            if (Function.Call<bool>(Hash.DOES_BLIP_EXIST, blip))
            {
                Function.Call(Hash.SET_BLIP_ALPHA, blip, alpha);
                Function.Call(Hash.SET_BLIP_DISPLAY, blip, displayId);
                Function.Call(Hash.SET_BLIP_SCALE, blip, scale);
            }
        }

        void OnTick(object sender, EventArgs e)
        {
            Blip PersonalVehicleCar1 = GetFirstBlipInfoId(225);
            SetBlipVisible(PersonalVehicleCar1, 0, 5, 0.0f);

            Blip PersonalVehicleCar2 = GetNextBlipInfoId(225);
            SetBlipVisible(PersonalVehicleCar2, 0, 5, 0.0f);

            Blip PersonalVehicleCar3 = GetNextBlipInfoId(225);
            SetBlipVisible(PersonalVehicleCar3, 0, 5, 0.0f);

            Blip Blimp1 = GetFirstBlipInfoId(401);
            SetBlipVisible(Blimp1, 0, 5, 0.0f);

            Blip Blimp2 = GetFirstBlipInfoId(638);
            SetBlipVisible(Blimp2, 0, 5, 0.0f);
        }
    }
}