Accessing data found in another object/script

In Tabletop Simulator, how can I exchange information between objects?

Is there a way, for example, to create a global variable?

To my knowledge, there are no global variables, and you can't create public object properties. But you're not out of luck.

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You can get and set an object's property using .getVar/.getTable and .setVar/.setTable. Docs.

For example,

Object aaaaaa

function onChat(message, player)
    local o = getObjectFromGUID("bbbbbb")
    local x = o.getVar("x")
    x = x + 1
    o.setVar("x", x)
    print(x)
end

Object bbbbbb

x = 0

You can also use Global.getVar(...), etc.

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Alternatively, you can create a method, and call using .call. This provides better encapsulation.

For example,

Object aaaaaa

function onChat(message, player)
    local o = getObjectFromGUID("82fbcf")
    local x = o.call("getX")
    x = x + 1
    o.call("setX", { value = x })
    print(x)
end

Object bbbbbb

x = 0

function getX(args)
    return x
end

function setX(args)
    x = args["value"]
end

The argument can only be a table.

You can also use Global.call(...).