Adding Sound Effects
The game is kind of quiet, don't you think? I've included a gunshot sound in the assets zip. Go ahead and add it to the game. You can get some help here: https://www.love2d.org/wiki/Tutorial:Audio
Show / Hide AnswerLike images, sound effects need to be loaded inside our love.load function.
gunSound = love.audio.newSource("assets/gun-sound.wav", "static")
We then go down into our update, find where the bullets are created and add our play command.
if love.keyboard.isDown(' ', 'rctrl', 'lctrl', 'ctrl') and canShoot then
-- Create some bullets
newBullet = { x = player.x + (player.img:getWidth()/2), y = player.y, img = bulletImg }
table.insert(bullets, newBullet)
--NEW LINE
gunSound:play()
--END NEW
canShoot = false
canShootTimer = canShootTimerMax
end
You might notice that we're not using gunSound.play() but instead we use gunSound:play().
This is a Lua language convention. Saying :play is the same as saying .play(gunSound)
Player Vertical Movement
Moving side-to-side is fine, but this isn't the 80s anymore. Long gone are the days of Space Invaders. Let's add vertical movement to our game just like we added horizontal movement. Make sure that we keep our player from flying off-screen.
Show / Hide AnswerAdd to love.update:
-- Vertical movement
if love.keyboard.isDown('up', 'w') then
if player.y > (love.graphics.getHeight() / 2) then
player.y = player.y - (player.speed*dt)
end
elseif love.keyboard.isDown('down', 's') then
if player.y < (love.graphics.getHeight() - 55) then
player.y = player.y + (player.speed*dt)
end
end
Display the Score
We're tracking the score, but I seem to have forgotten to display it anywhere. Go ahead and write it out. Remember, we're already writing some text when the game is restarted.
Show / Hide AnswerAdd to love.draw:
love.graphics.setColor(255, 255, 255)
love.graphics.print("SCORE: " .. tostring(score), 400, 10)