return ( ( ((px-X)*(px-X))+((py-Y)*(py-Y))+((pz-Z)*(pz-Z)) ) >= radius*radius );

 private bool IsPlayerInRangeOfPoint(Player pl, float radius, Vector3 other)
        {
            if (pl.Pos.Distance(other) < radius) return true;
            return false;
        }

public float Distance(Vector3 other)
        {
            //     __________________________________
            //d = √ (x2-x1)^2 + (y2-y1)^2 + (z2-z1)^2
            //
 
            //Our end result
            float result = 0.0F;
            //Take x2-x1, then square it
            double part1 = Math.Pow((other.X - this.X), 2);
            //Take y2-y1, then sqaure it
            double part2 = Math.Pow((other.Y - this.Y), 2);
            //Take z2-z1, then square it
            double part3 = Math.Pow((other.Z - this.Z), 2);
            //Add both of the parts together
            double underRadical = part1 + part2 + part3;
            //Get the square root of the parts
            result = (float)Math.Sqrt(underRadical);
            //Return our result
            return result;
        }

        public void SpawnPlayerCar(int playerid)
        {
            int model = 429; //banshee
            Samp.Util.FloatRef x = 0.0F, y = 0.0F, z = 0.0F, angle = 0.0F; // must use FloatRef class to return floats from native function, same goes for StringRef & IntRef
            Samp.Client.NativeFunctionRequestor.RequestFunction("GetPlayerPos", playerid, x, y, z);
            NativeFunctionRequestor.RequestFunction("GetPlayerFacingAngle", playerid, angle);
            int vehicleid = NativeFunctionRequestor.RequestFunction("CreateVehicle", model, x.Value, y.Value, z.Value, angle.Value, 0, 0, 300);// note that we use x.Value now
            NativeFunctionRequestor.RequestFunction("PutPlayerInVehicle", playerid,vehicleid,0);
            NativeFunctionRequestor.RequestFunction("SendClientMessage", playerid, 0,"{00FF00}Vehicle Spawned.");
        }