vehicle component manipulation

[Xwad]

Hmmm i'm wondering why does this not work. 

line 3: unexpected symbol near '

 

function rotate()
	for i,v in ipairs(getElementsByType("vehicle")) do
		local _,_,rh = getVehicleComponentRotation(v, "misc_a")                    
		setVehicleComponentRotation(v, "misc_a", _,_,rh+2)
	end
end
addEventHandler("onClientRender", root, rotate)

 

[IIYAMA]

@Xwad

You used or copied+past a special/invisible characters on line 3.

 

Fixed:

local _, _, rh = getVehicleComponentRotation(v, "misc_a")

 

 

Which is somehow located in here:

local _,_,rh = getVehicleComponentRotation(v, "misc_a")                    

 

 

And if we debug that:

local theString = "                    "
print(string.byte(theString,1,#theString))

 

32	239	187	191	239	187	191	32	239	187	191	239	187	191	32	239	187	191	32	32	32	32	32	32	32	32	32	32	32	32	32	239	187	191	239	187	191	32	32	32	32

Holy  !

 

 

Edited March 13, 2019 by IIYAMA

[Xwad]

Well, although this problem is fixed, i got a new one haha

line 4: attempt to perform arithmetic on local rh a nil value

this means that rh does not have a value?

[IIYAMA]

@Xwad

Yup

 

local rh 


print(rh * 10)

input:4: attempt to perform arithmetic on a nil value (local 'rh')

 

 

https://en.wikipedia.org/wiki/Arithmetic

[Xwad]

yeah but i get the value with getVehicleComponentRotation, so why is it not working?

Edited March 13, 2019 by Xwad

[IIYAMA]

7 minutes ago, Xwad said:

yeah but i get the value with getVehicleComponentRotation, so why is it not working?

 

It returns nil/false when:

• Maybe the vehicle doesn't have that component? (for sure)
• There is no vehicle. (for sure)
• Or it might not be counted if it has fallen off. (maybe)
• Or if the vehicle isn't streamed in. (maybe)
• etc.

 

So take always in account that something can go wrong. Always validate the output.

 

In most cases this is enough: (especially when it is a MTA function)

if rh then
	
end

 

 

 

Edited March 13, 2019 by IIYAMA