function love.load() -- do global variables get declared here?
    windowwidth = 1000
    windowheight = 1000
    sucess = love.window.setMode(windowwidth, windowheight)
    x = 30
    y = 50
    z = math.sin(math.pi/3)
    cx = 0
    cy = 0
    a = 20
    b = 1/4
    ps = 0
end
function love.update(dt)


    local m = math.pow(2, dt)
    if love.keyboard.isDown("up") then
        a = a*m
    end
    if love.keyboard.isDown("down") then
        a = a/m
    end
    if love.keyboard.isDown("right") then
        b = b*m
    end
    if love.keyboard.isDown("left") then
        b = b/m
    end
    if love.keyboard.isDown("a") then
        ps = ps - 1
    end
    if love.keyboard.isDown("s") then
        ps = ps + 1
    end
end
function love.draw() -- render to window

    love.graphics.setColor(200/255, 215/255, 0/255)
    delthe = math.pi/60 -- 3 degrees
    x = 0

    odeg = math.pi/180

    for theta = -32*math.pi, 32*math.pi, odeg do

        love.graphics.line(x, a*math.sin(b*(theta + ps))+windowwidth/2, x+odeg, a*math.sin(b*theta+odeg + ps + 0.1)+windowwidth/2)

        x = x + 0.1
    end

end