function love.load()
    birdY = 200
    birdYSpeed = 0

    birdX = 62
    birdWidth = 30
    birdHeight = 25

    playingAreaWidth = 300
    playingAreaHeight = 388

    pipeSpaceHeight = 100
    pipeWidth = 54

    function newPipeSpaceY()
        local pipeSpaceYMin = 54
        local pipeSpaceY = love.math.random(
            pipeSpaceYMin,
            playingAreaHeight - pipeSpaceHeight - pipeSpaceYMin
        )
        return pipeSpaceY
    end

    pipe1X = 100
    pipe1SpaceY = newPipeSpaceY()

    pipe2X = 200
    pipe2SpaceY = newPipeSpaceY()
end

function love.update(dt)
    birdYSpeed = birdYSpeed + (516 * dt)
    birdY = birdY + (birdYSpeed * dt)

    local function movePipe(pipeX, pipeSpaceY)
        pipeX = pipeX - (60 * dt)

        if (pipeX + pipeWidth) < 0 then
            pipeX = playingAreaWidth
            pipeSpaceY = newPipeSpaceY()
        end

        return pipeX, pipeSpaceY
    end

    pipe1X, pipe1SpaceY = movePipe(pipe1X, pipe1SpaceY)
    pipe2X, pipe2SpaceY = movePipe(pipe2X, pipe2SpaceY)

    --[[
    if
    -- Left edge of bird is to the left of the right edge of pipe
    birdX < (pipeX + pipeWidth)
    and
    -- Right edge of bird is to the right of the left edge of pipe
    (birdX + birdWidth) > pipeX
    and (
        -- Top edge of bird is above the bottom edge of first pipe segment
        birdY < pipeSpaceY
        or
        -- Bottom edge of bird is below the top edge of second pipe segment
        (birdY + birdHeight) > (pipeSpaceY + pipeSpaceHeight)
    ) then
        love.load()
    end
    --]]
end

function love.keypressed(key)
    if birdY > 0 then
        birdYSpeed = -165
    end
end

function love.draw()
    love.graphics.setColor(.14, .36, .46)
    love.graphics.rectangle('fill', 0, 0, playingAreaWidth, playingAreaHeight)

    love.graphics.setColor(.87, .84, .27)
    love.graphics.rectangle('fill', birdX, birdY, birdWidth, birdHeight)

    local function drawPipe(pipeX, pipeSpaceY)
        love.graphics.setColor(.37, .82, .28)
        love.graphics.rectangle(
            'fill',
            pipeX,
            0,
            pipeWidth,
            pipeSpaceY
        )
        love.graphics.rectangle(
            'fill',
            pipeX,
            pipeSpaceY + pipeSpaceHeight,
            pipeWidth,
            playingAreaHeight - pipeSpaceY - pipeSpaceHeight
        )
    end

    drawPipe(pipe1X, pipe1SpaceY)
    drawPipe(pipe2X, pipe2SpaceY)
end