love.keyboard.isDown
Checks whether a certain key is down. Not to be confused with love.keypressed or love.keyreleased.
Function
Synopsis
down = love.keyboard.isDown( key )
Arguments
KeyConstant key- The key to check.
Returns
boolean down- True if the key is down, false if not.
Function
Available since LÖVE 0.7.2
This variant is not supported in earlier versions.
Synopsis
anyDown = love.keyboard.isDown( key, ... )
Arguments
KeyConstant key- A key to check.
KeyConstant ...- Additional keys to check.
Returns
boolean anyDown- True if any supplied key is down, false if not.
Examples
Increase a value while a key is held down
local val = 0;
function love.update(dt)
-- We will increase the variable by 1 for every second the key is held down.
if love.keyboard.isDown("up") then
val = val + dt
print(val)
end
-- We will decrease the variable by 1/s if any of the wasd keys is pressed.
if love.keyboard.isDown('w', 'a', 's', 'd') then
val = val - dt
print(val)
end
end 
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