How do I set the maximum Touch events?

Millerszone · October 2011

With the example "Touch Explorer" you can have five dots or 5 touches.
If you touch more than 5 times the app will crash.

With my app I only need a max of 2 touches at a time.
So I need something like this example:
if #event.touches > 2 then totalTouches = 2 end

local dots = {dot1, dot2} 
 
local function onTouchesMove(event)
	for i=1,totalTouches do
	local dot = dots[event.touches[i].id]
	dot:setPosition(event.touches[i].x, event.touches[i].y)
	end
end

Thanks

atilim · October 2011

You're right. I've recently found that bug and fixed it.

Thank you.

Millerszone · October 2011

For a max of 2 touches, I'm using this, it seems to work o.k for now.

local function onTouchesBegin(event)
   for i=1,#event.touches do
	if event.touches[i].id > 2 then event.touches[i].id = 2 end
	paddle = paddles[event.touches[i].id]
	stage:addChild(paddle)
   end
end

atilim · October 2011

I think, totally ignoring the touches with id > 2 is more suitable:

local function onTouchesBegin(event)
    for i=1,#event.touches do
        if event.touches[i].id <= 2 then
            paddle = paddles[event.touches[i].id]
            stage:addChild(paddle)
        end
    end
end

With your code, you can control the 2nd paddle with the 3rd touch

Millerszone · October 2011

Yes, your way is better, but after looking over my code, I really didn't need
the above extra code.
What I was doing was adding: stage:addChild(paddle) when I didn't need it,
that was causing the crash.

Thanks

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