function love.load()
    --Object = require "classic"
    require "cjrcle"
    windowwidth = 1000
    windowheight = 1000
    love.graphics.setBackgroundColor(1, 1, 1)
    sucess = love.window.setMode(windowwidth, windowheight)

    ctheta = math.pi/2
    x = 0
    y = 0

    startposX = -500
    discr = 50
    hr = 10

    speed = 1

    -- hammer position
    hxpos = startposX + discr*math.cos(math.pi/2)
    hypos = y - discr*math.sin(math.pi/2)
    rv = 1 -- rotational velocity
end

function love.update(dt)

    ctheta = ctheta - rv*math.pi/4*dt
    if speed < 10 then
        --speed = speed*1.01
        startposX = startposX + speed
    end


    hxpos = startposX + discr*math.cos(ctheta)
    hypos = y - discr*math.sin(ctheta)
    if startposX > 0 then
      startposX = 0
    end
    if rv < 12 then
      rv = rv*1.01 -- the rotational velocity is always being updated at every frame
    end
end
--[[
  equation of tangent line y = -x + 50*math.sqrt(2)
]]

function love.keypressed(key)
    if key == "space" and startposX < 0 then
        speed = 0
        hxpos = hxpos + 1/math.cos(ctheta) -- trying to make the hammer x position the secant of ctheta
        hypos = hypos + 1/math.sin(ctheta) -- trying to make the hammer y position the cosecant of ctheta
        -- really i'm just trying to draw a tangent vector to the circle
    end
end

function love.draw()
    --love.graphics.push()
    love.graphics.translate(windowwidth/2, windowheight/2)


    -- green circle
    love.graphics.setColor(0, 1, 0)
    cjrcle(discr, startposX, 0, 32)

    --blue circle
    love.graphics.setColor(0, 0, 1) -- blue paint

    cjrcle(10, hxpos, hypos, 16)

    love.graphics.setColor(0, 0, 0) -- black
    love.graphics.setLineWidth(.5)
    love.graphics.line(50*math.sqrt(2), 0, 0, -50*math.sqrt(2))
    love.graphics.setColor(1,0,0) -- red
    love.graphics.setLineWidth(.3)
    love.graphics.line(50*math.tan(math.pi/4), 0, 0, -50*math.tan(math.pi/4)) -- tan π/4 = 1

    love.graphics.line(0, 25*math.sqrt(3) + math.sqrt(1875)/3, 0, 25*math.sqrt(3) + math.sqrt(1875)/3)

end