#define BULLET_HIT_PETROL_TANK 0
#define BULLET_HIT_LEFT_FRONT_WHEEL 1
#define BULLET_HIT_RIGHT_FRONT_WHEEL 2
#define BULLET_HIT_LEFT_BACK_WHEEL 3
#define BULLET_HIT_RIGHT_BACK_WHEEL 4
#define BULLET_HIT_BODY 5

//GetVehicleTireStatus
#define VEHICLE_RIGHT_BACK_WHEEL 0
#define VEHICLE_RIGHT_FRONT_WHEEL 1
#define VEHICLE_LEFT_BACK_WHEEL 2
#define VEHICLE_LEFT_FRONT_WHEEL 3
//Callbacks
forward OnPlayerShootVehiclePart(playerid, weaponid, vehicleid,hittype);

//Natives
native EnableVehicleDamage(true/false); //Add this under OnGamemodeInit/OnFilterscriptInit to enable/disable.
native EnableVehiclePetrolCapExplosion(true/false);//Add this under OnGamemodeInit/OnFilterscriptInit to enable/disable.
native EnableVehicleWheelTirePop(true/false);//Add this under OnGamemodeInit/OnFilterscriptInit to enable/disable.
native ToggleVehicleDamage();//Toggle Vehicle Damage
native ToggleVehiclePetrolCapExplosion();//Toggle Vehicle Petrol Cap Explosion
native ToggleVehicleWheelTirePop();//Toggle Vehicle Wheel Tire Pop
native GetVehicleTireStatus(Vehicleid,Tire);//Checking the Vehicle Tire Status (Return 1 : Tire Popped - Return 0 : Tire Unpopped)

public OnPlayerShootVehiclePart(playerid, weaponid, vehicleid,hittype)
{
    if(hittype==BULLET_HIT_PETROL_TANK)//When player shoots on the petrol cap of a vehicle
    {
        new Float:vPosx,Float:vPosy,Float:vPosz;
        GetVehiclePos(vehicleid, vPosx,vPosy,vPosz);
        CreateExplosion(vPosx,vPosy,vPosz, 6, 30.0);
        SetVehicleToRespawn(vehicleid);
        SendClientMessage(playerid,-1,"You have hit the PETROL CAP!");
        return 1;
    }
    if(hittype==BULLET_HIT_LEFT_FRONT_WHEEL)//When player shoots on the left front wheel of a vehicle
    {
        if(GetVehicleTireStatus(vehicleid,VEHICLE_LEFT_FRONT_WHEEL)==0)
        {
            SetVehicleTireStatus(vehicleid,VEHICLE_LEFT_FRONT_WHEEL);//will pop the left front wheel tire
            SendClientMessage(playerid,-1,"You have hit the LEFT FRONT WHEEL!");
            return 1;
        }
        else SendClientMessage(playerid,-1,"The LEFT FRONT WHEEL TIRE is already popped!");
    }
    if(hittype==BULLET_HIT_RIGHT_FRONT_WHEEL)//When player shoots on the right front wheel of a vehicle
    {
        if(GetVehicleTireStatus(vehicleid,VEHICLE_RIGHT_FRONT_WHEEL)==0)
        {
            SetVehicleTireStatus(vehicleid,VEHICLE_RIGHT_FRONT_WHEEL);//will pop the right front wheel tire
            SendClientMessage(playerid,-1,"You have hit the RIGHT FRONT WHEEL!");
            return 1;
        }
        else SendClientMessage(playerid,-1,"The RIGHT FRONT WHEEL TIRE is already popped!");
    }
    if(hittype==BULLET_HIT_LEFT_BACK_WHEEL)//When player shoots on the left back wheel of a vehicle
    {
        if(GetVehicleTireStatus(vehicleid,VEHICLE_LEFT_BACK_WHEEL)==0)
        {
            SetVehicleTireStatus(vehicleid,VEHICLE_LEFT_BACK_WHEEL);//will pop the left back wheel tire
            SendClientMessage(playerid,-1,"You have hit the LEFT BACK WHEEL!");
            return 1;
        }
        else SendClientMessage(playerid,-1,"The LEFT BACK WHEEL TIRE is already popped!");
    }
    if(hittype==BULLET_HIT_RIGHT_BACK_WHEEL)//When player shoots on the right back wheel of a vehicle
    {
        if(GetVehicleTireStatus(vehicleid,VEHICLE_RIGHT_BACK_WHEEL)==0)
        {
            SetVehicleTireStatus(vehicleid,VEHICLE_RIGHT_BACK_WHEEL);//will pop the right back wheel tire
            SendClientMessage(playerid,-1,"You have hit the RIGHT BACK WHEEL!");
            return 1;
        }
        else SendClientMessage(playerid,-1,"The RIGHT BACK WHEEL TIRE is already popped!");
    }
    if(hittype==BULLET_HIT_BODY)//When player shoots on a vehicle
    {
        SendClientMessage(playerid,-1,"You have hit the VEHICLE!");
        return 1;
    }
    return 1;
}

2.1
- Added native ToggleVehicleDamage();
- Added native ToggleVehiclePetrolCapExplosion();
- Added native ToggleVehicleWheelTirePop();
- Added native GetVehicleTireStatus(Vehicleid,Tire);
- Added new defines that can be used for GetVehiveTireStatus:
  #define VEHICLE_RIGHT_BACK_WHEEL
  #define VEHICLE_RIGHT_FRONT_WHEEL
  #define VEHICLE_LEFT_BACK_WHEEL
  #define VEHICLE_LEFT_FRONT_WHEEL
- Changed native EnableVehicleDamage(toggle);//now with toggle (true/false)
- Changed native EnableVehiclePetrolCapExplosion(toggle);//now with toggle (true/false)
- Changed native EnableVehicleWheelTirePop(toggle);//now with toggle (true/false)
- Fixed: Tires didnt popped good.

2.0
- Added EnableVehicleDamage(); 
- Added EnableVehiclePetrolCapExplosion();
- Added EnableVehicleWheelTirePop();
- Changed the define BULLET_HIT_VEHICLE to BULLET_HIT_BODY
- Fixed the Petrol Caps offsets. The Petrol Caps is now accurate.

1.0
- First Release

- Improving Vehicle Parts offsets
- Adding bike support
- Adding middle wheels support (Thanks to king_hual for the suggestion)
- Adding more vehicle parts

2.0 - Added EnableVehicleDamage();
 - Added EnableVehiclePetrolCapExplosion();
 - Added EnableVehicleWheelTirePop(); - Changed the define BULLET_HIT_VEHICLE to BULLET_HIT_BODY - Fixed the Petrol Caps offsets. The Petrol Caps is now accurate.