Love2d isDown equivalent for touch control?

Question

I have this code for mouse:

if love.mouse.isDown(1) then
   self.player:fire()
end

So this fires the gun as long as the mouse button is held down. I have onscreen buttons for touch which I can capture individual touches with love.touchpressed but this fires the gun one at a time.

I want it so that the player can touch the onscreen button and as long as it is held down the gun fires continuously.

Answer 1

Use:

if next(love.touch.getTouches()) ~= nil then
    self.player:fire()
end

or define function is_empty or any:

function is_empty(t)
    return next(t) == nil
end

if not is_empty(love.touch.getTouches()) then
    self.player:fire()
end

function any(t)
    return next(t) ~= nil
end

if any(love.touch.getTouches()) then
    self.player:fire()
end