One EventListener for multiple events

Etere · April 2019

Hello,

The past few weeks I've been learning about Gideros and Lua. I've been trying to figure out how to use one addEventListener for multiple events. I came across something called bubbling in JS, but haven't found a way to do it with lua. Is what I'm trying to do even possible with just lua?

oleg · April 2019

https://github.com/razorback456/gideros_tools/blob/master/Button.lua

Apollo14 · April 2019

Etere said:
how to use one addEventListener for multiple events

Hi!
I don't get what exactly do you mean, syntax sugar for these declarations?

	self:addEventListener(Event.TOUCHES_BEGIN, self.onTouchesBegin, self)
	self:addEventListener(Event.TOUCHES_MOVE, self.onTouchesMove, self)
	self:addEventListener(Event.TOUCHES_END, self.onTouchesEnd, self)

SinisterSoft · April 2019

Or do you mean one event function for different types of events - like this:

function mouse(e)
  if e.type=="mouseDown" then
-- here just mouse down
  elseif e.type=="mouseUp" then
-- here mouse up
  else
-- here everything else
  end
 
  -- this bit will be executed by mouseDown, mouseUp, mouseMove etc
end
 
stage:addEventListener(Event.MOUSE_HOVER,mouse)
stage:addEventListener(Event.MOUSE_DOWN,mouse)
stage:addEventListener(Event.MOUSE_UP,mouse)
stage:addEventListener(Event.MOUSE_MOVE,mouse)
stage:addEventListener(Event.MOUSE_WHEEL,mouse)

I don't know if there is a function to add all events for a particular object to a single function in one call, might be useful though.. eg

function stageEvents(e)
  -- here will get all events for the stage object
end
stage:addEventsListener(stageEvents)

Etere · April 2019

I may have worded it wrong. I'll try to explain what I'm trying to do.

Okay so each block will be clickable.
■ ■ ■
■ ■ ■
■ ■ ■

My goal is to click on a box then click on the adjacent box and have it draw a line. What I don't want is to have a bunch of EventListeners for every box.

oleg · April 2019

multitouch class - I gave you the above link

oleg · April 2019

Also in gideros there is an example
"event.touch.id"

Etere · April 2019

Awesome. Thank you all for the help. I'm gonna check that out shortly oleg.

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