Question: How do you handle input in Love2D?

Answer

Handling input in Love2D is straightforward and involves using the built-in keyboard and mouse functions provided by the Love2D API. Here are some common ways to handle input:

Keyboard Input: To detect if a specific key is pressed, use love.keyboard.isDown(key) within the love.update(dt) function.

function love.update(dt) if love.keyboard.isDown("space") then -- Spacebar was pressed, perform an action here end end

Key Presses and Releases: For single keypress events, use the love.keypressed(key) and love.keyreleased(key) callbacks.

function love.keypressed(key) if key == "escape" then love.event.quit() end end

Mouse Input: You can check the position and click status of the mouse with love.mouse.getPosition() and love.mouse.isDown(button).

function love.update(dt) if love.mouse.isDown(1) then -- 1 is the primary button (usually left-click) local x, y = love.mouse.getPosition() -- Process mouse click at position (x, y) end end

Mouse Click Events: The love.mousepressed(x, y, button, istouch, presses) and love.mousereleased(x, y, button, istouch, presses) callbacks can be used for handling mouse click events.

function love.mousepressed(x, y, button, istouch, presses) if button == 1 then -- 1 is the primary button (usually left-click) -- Mouse was pressed at position (x, y), handle it here end end

Joystick Input: Love2D also supports joystick input via love.joystick module. Check if a button on the joystick is pressed with joystick:isDown(button).

function love.update(dt) local joysticks = love.joystick.getJoysticks() for i, joystick in ipairs(joysticks) do if joystick:isDown(1) then -- First button on the joystick is pressed end end end

Text Input: For text input, enable text input mode with love.keyboard.setTextInput(true) and use the love.textinput(text) callback.

function love.load() love.keyboard.setTextInput(true) end function love.textinput(text) -- Append entered text to a string buffer or process it here end

Using these functions and callbacks will allow you to react to user input in your Love2D game or application.

Was this content helpful?

White Paper

Free System Design on AWS E-Book

Download this early release of O'Reilly's latest cloud infrastructure e-book: System Design on AWS.

Free System Design on AWS E-Book

Start building today

Dragonfly is fully compatible with the Redis ecosystem and requires no code changes to implement.