Node used in the wrong scene

Questions
#1

Hi everybody!

Have such problem, read some posts about it but still don’t know what’s wrong.
Have a main scene, where fill table with callbacks and on some game actions try to call this callbacks and get the error “Node used in the wrong scene”.

#2

The problem is that you are using a gui.* function on a node that doesn’t belong to the same gui scene as the script that is calling the gui function. Here’s an example with two .gui files with a .gui_script each and one .lua file:

  • The Lua module keeps a list of gui nodes and it provides a function for setting the color of all nodes:
-- module.lua
local M = {}

local nodes = {}

function M.add_node(node)
	table.insert(nodes, node)
end

function M.set_color(color)
	for _,node in ipairs(nodes) do
		-- This may trigger "node used in the wrong scene!"
		gui.set_color(node, color)
	end
end

return M
  • Here’s one gui script that adds a node to the module:
-- foo.gui_script
local module = require "module"

function init(self)
	module.add_node(gui.get_node("foo"))
end
  • And here’s another gui script that adds a node to the module:
-- boo.gui_script
local module = require "module"

function init(self)
	module.add_node(gui.get_node("boo"))
end

Now, what happens if we call module.set_color(vmath.vector4(1,0,0,1) from a gui script or some other script file? If the list contains nodes from multiple gui files or if we call it from a script file we will encounter the “Node used in the wrong scene” error.

I don’t know enough about how you have structured your code but it is certainly the case that you have a mixup of your gui node references!

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#3

Oh, now I understood… So I can’t call gui functions from another scripts…
Thank you!

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