Store variables in gui script for later use (SOLVED)

Questions
1

I am recieving three values in a guiscript (via message)
however, i cant store these values in local variables for later use.
how can i store the message attributes ( message.myname, message.mybuildlevel) for later access in
on_input function?
Now it only show nil if i try to access the self.myname

function on_message(self, message_id, message, sender)

--safe attributes
self.mybuildtype=message.mybuildtype
self.myname=message.myname
self.mybuildlevel=message.mybuildlevel

--show menu buttons
msg.post(".", "enable")
local n1 = gui.get_node("general")
gui.set_position(n1, vmath.vector3(message.tx, message.ty, 0))

end


function on_input(self, action_id, action)

    if action_id == hash("click") and gui.pick_node(gui.get_node("bt0-menuspot1"), action.x, action.y) and 
    action.pressed then
        print("myn:" .. self.myname)
        print("mybt:" .. self.mybuildtype)
    end

end
2

The code looks good from what I can tell. Can you please print in on_message and see that you are actually receiving a message?

Could it be that the on_message function is receiving multiple messages and that some of them do not have the mybuildtype, myname etc? If that is the case then you need to check message_id and only if it’s the right type of message set self.mybuildtype etc

2 Likes
3

ok. britzl was right. there were other messages incoming without the attributes, thus the original values from the first call were replaced by nil. now for other people to see what i am passing around:

a) a game object sends a message to the gui with some parameters

local function do_click(self, url, message)
message.myname=self.myname
message.mybuildtype=self.mybuildtype
message.mybuildlevel=self.mybuildlevel
msg.post("/menu#gui", "show", message)
end

b) the gui object recieves the message and stores it

function on_message(self, message_id, message, sender)
if message_id == hash("show") then
	self.mybuildtype=message.mybuildtype
	self.myname=message.myname
	self.mybuildlevel=message.mybuildlevel
	self.sender=sender
-
      msg.post(".", "enable")
      local n1 = gui.get_node("general")
      gui.set_position(n1, vmath.vector3(message.tx, message.ty, 0))
end
end

c) later when a menu button of the gui is pressed i can increase one of the stored values
and call back the original sender (game object).

function on_input(self, action_id, action)
    if action_id == hash("click") and gui.pick_node(gui.get_node("bt0-menuspot1"), action.x, action.y) and action.pressed then
     self.mybuildlevel=self.mybuildlevel+1
     msg.post(self.sender,"do_build", { level=self.mybuildlevel })
    end
end

d) the game object reacts by storing the new variable and changing its animation

function on_message(self, message_id, message, sender)
if message_id == hash("do_build") then
	self.mybuildlevel=message.level
	msg.post("#sprite", "play_animation", {id = hash("animation2")})
	end
end
4 Likes