InvincibleRagdoll.cs

using GTA; // This is a reference that is needed! do not edit this
using GTA.Math;
using GTA.Native; // This is a reference that is needed! do not edit this
using System; // This is a reference that is needed! do not edit this
using System.Windows.Forms; // This is a reference that is needed! do not edit this

namespace InvincibleRagdoll
{
    public class InvincibleRagdoll : Script // declare Modname as a script
    {
        bool invincible = false;

        public InvincibleRagdoll() // main function
        {
            Tick += this.OnTick;
            KeyDown += this.OnKeyDown;
            KeyUp += this.OnKeyUp;
        }

        void OnTick(object sender, EventArgs e) // This is where most of your script goes
        {
            Ped player = Game.Player.Character; // player variable

            if (player.IsRagdoll)
            {
                player.Health = player.MaxHealth;
                player.Armor = 100;
                Function.Call(Hash.SET_PED_SUFFERS_CRITICAL_HITS, player, false);
                player.AlwaysDiesOnLowHealth = false;
                invincible = true;
            }
            else
            {
                if (invincible) //to make the following code only run once, we check the "invincible" boolean
                {
                    Function.Call(Hash.SET_PED_SUFFERS_CRITICAL_HITS, player, true);
                    //player.AlwaysDiesOnLowHealth = true; //not sure if needed, so leaving it out.
                    invincible = false;
                }
            }
        }

        void OnKeyDown(object sender, KeyEventArgs e)
        {
        }

        void OnKeyUp(object sender, KeyEventArgs e)
        {
        }
    }
}