dt is the most common shorthand for delta-time, which is usually passed through [[love.update]] to represent the amount of time which has passed since it was last called. It is in seconds, but because of the speed of modern processors is usually smaller than 1 values like 0.01 are common.

== Examples ==

=== Increase a variable x by 1 every second ===
<source lang="lua">
x = 0
function love.update(dt)
   x = x + dt
end
</source>


=== Change a position x at a fixed speed while a key is held down ===
<source lang="lua">
x = 0
speed = 32
function love.update(dt)
   if love.keyboard.isDown("right") then
      x = x + (speed * dt)  -- x will increase by 32 for every second right is held down
   elseif love.keyboard.isDown("left") then
      x = x - (speed * dt)
   end
end
</source>

== See Also ==

* [[love.update]] 
* [[love.timer.getDelta]]


== Other Languages ==
{{i18n|dt}}