Cheat Engine

[sjl002]

Hi.
In timer properties ,Tag in what the lua scripts used?(Can you write an example for tag?)

Very Thanks
*SJL002*

[Dark Byte]

Almost all objects have a Tag property that can contain an integer
you can use that as an index into an array of objects you may with to use.

I often use createRef()/getRef() , but you could just as well create an custom table like mydata and use the Tag object as an index into that array ( mydata[Object.Tag] )


e.g at http://forum.cheatengine.org/viewtopic.php?p=5677212#5677212 I use createRef to add the Ultimap form to the registry table. (it returns an index into that table)
with getRef I am then able to get the ultimap Form at a later time. (Which I also pass on to the MenuItem object's Tag so that menu click can find the form as well)


Note that you can also encapsule multiple objects into one.
e.g:
data={}
data.form=myform
data.valuex=123
data.test="something"

createRef(data) will return a single integer which you can assign to the Tag property.
getRef can be used on that integer to get that data table

[ParkourPenguin]

In that example, since the timer's OnTimer function and menu item's OnClick function are within the scope of the form f passed to the formAddNotification function, wouldn't it be fine to use that reference instead?

[Dark Byte]

Not sure exactly how lua handles this, but all I know is that the OnClick function will execute a long time after this script has finished (so likely also cleaned up some local vars)

Perhaps it works as it's in the context, but I don't know if that's to be trusted

[mgr.inz.Player]

lexical scoping
closures
https://www.lua.org/pil/6.1.html