LÖVE

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function Ship:update(dt)
    if love.keyboard.isDown('left','a') then
        if self.data.x >= 10 then
            self.data.x = self.data.x - (self.data.speed*dt)
        end
    elseif love.keyboard.isDown('right','d') then
        if self.data.x <= (love.graphics.getWidth() - self.data.sprite:getWidth() - 10) then
            self.data.x = self.data.x + (self.data.speed*dt)
        end
    end
    if love.keyboard.isDown('up','w') then
        if self.data.y >= 10 then
            self.data.y = self.data.y - (self.data.speed*dt)
        end

    elseif love.keyboard.isDown('down','s') then
        if self.data.y <= (love.graphics.getHeight() - self.data.sprite:getHeight() - 10) then
            self.data.y = self.data.y + (self.data.speed*dt)
        end
    end

    -- Managing shoot timing
    self.data.canShootTimer = self.data.canShootTimer - (1 * dt)
    if self.data.canShootTimer < 0 then
        self.data.canShoot = true
    end

    -- Shoot!
    if love.keyboard.isDown('rctrl', 'lctrl', 'ctrl') and self.data.canShoot then
        -- Create some lasers
        newLaser = { x = self.data.x + (self.data.sprite:getWidth()/2 - (self.data.laser:getWidth()/2)), y = self.data.y, img = self.data.laser }
        table.insert(self.data.lasers, newLaser)
        self.data.canShoot = false
        self.data.canShootTimer = self.data.canShootTimerMax
        
        -- Play sound
        laserSound:play()
    end

    -- update the positions of bullets
    for i, bullet in ipairs(self.data.lasers) do
        bullet.y = bullet.y - (LASER_SPEED * dt)

        if bullet.y < 0 then -- remove bullets when they pass off the screen
            table.remove(self.data.lasers, i)
        end
    end
end