Handling Flags

[Forrest]

I'm in the process of making a small and simple handling editor for myself, just as a small project out of boredom.

Just basic functions that are really all you need for simple handling editing.

But I've bumped into a problem, all the bottom check boxes are for handling flags. And I need to get the flags so that depending on which ones are active they'll be ticked/unticked. But the thing is... How the hell do I check for flags..?

local handlingCurrent = getVehicleHandling(theVehicle) 
outputChatBox(tostring(handlingCurrent["handlingFlags"])) 

When using the above, all I get is: 67108865 - Depending on which flags are on/off, but the string is ALWAYS different lengths, combinations etc. So how the hell do I go about checking for a specific flag being on or off?

Thanks.

[50p]

That number represents the flags. If you convert that number to hexadecimal number you will get 0x4000001.

Each of the bytes of the number represent 4 flags, as explained here: http://projectcerbera.com/gta/sa/tutorials/handling

All you need to do is check if the flag is set by using bitAnd function.

I haven't tested this but you can do that and try if it works:

local gHandlingFlags =  
{ 
    _1G_BOOST = 0x1, 
    _2G_BOOST = 0x2, 
    NPC_ANTI_ROLL = 0x4, 
    NPC_NEUTRAL_HANDL = 0x8, 
    NO_HANDBRAKE = 0x10, 
    STEER_REARWHEELS = 0x20, 
    HB_REARWHEEL_STEER = 0x40, 
    ALT_STEER_OPT = 0x80, 
    WHEEL_F_NARROW2 = 0x100, 
    WHEEL_F_NARROW = 0x200, 
    WHEEL_F_WIDE = 0x400, 
    WHEEL_F_WIDE2 = 0x800, 
    WHEEL_R_NARROW2 = 0x1000, 
    WHEEL_R_NARROW = 0x2000, 
    WHEEL_R_WIDE = 0x4000, 
    WHEEL_R_WIDE2 = 0x8000, 
    HYDRAULIC_GEOM = 0x10000, 
    HYDRAULIC_INST = 0x20000, 
    HYDRAULIC_NONE = 0x40000, 
    NOS_INST = 0x80000, 
    OFFROAD_ABILITY = 0x100000, 
    OFFROAD_ABILITY2 = 0x200000, 
    HALOGEN_LIGHTS = 0x400000, 
    PROC_REARWHEEL_1ST = 0x800000, 
    USE_MAXSP_LIMIT = 0x1000000, 
    LOW_RIDER = 0x2000000, 
    STREET_RACER = 0x4000000, 
    --UNDEFINED = 0x8000000, 
    SWINGING_CHASSIS = 0x10000000 
}; 
  
function isFlagSet( val, flag ) 
    return (bitAnd( val, flag ) == flag) 
end 
  
function getVehicleHandlingFlags( vehicle ) 
    local retFlags = { }; 
    local flags = getVehicleHandling( vehicle )["handlingFlags"]; 
    for name, flag in pairs( gHandlingFlags ) do 
        if isFlagSet( flags, flag ) then 
            retFlags[ name ] = true; 
        end 
    end 
    return retFlags; 
end 

You can use my function getVehicleHandlingFlags which will return a table of the flags, eg:

local handlingFlags = getVehicleHandlingFlags( getPedOccupiedVehicle( localPlayer ) ); 
for name in pairs( handlingFlags ) do 
    outputChatBox( "Flag set: " .. name ); 
end 

If you don't want to loop and check if specific flag is set, you can use my other function isFlagSet:

local handlingFlags = getVehicleHandling( localPlayer )["handlingFlags"]; -- standard value, like your example: 67108865 
if isFlagSet( handlingFlags, gHandlingFlags.STREET_RACER ) then -- use the table (gHandlingFlags) provided with predefined flag names 
    outputChatBox( "You can mod your car at Wheel Arch Angels." ); 
end 

As I explained above: 67108865 == 0x4000001

Check the table gHandlingFlags and find: 0x4000000, it'll be -> STREET_RACER

Check the table again and find: 0x1, it'll be -> _1G_BOOST

I hope it works and you understood how it works.

[Forrest]

@50p was one small error where localPlayer had to be replaced with the variable for the vehicle but other than that, spot on!

Greatly appreciated buddy!

[50p]

I'm glad it worked :> Good luck.

[Forrest]

Me too haha, I was confused as ever! Thanks buddy.