--[[-------------------------------------
- Interacting with screen boundaries.
- Mithat Konar
-------------------------------------]]--

--------------------
-- LÖVE functions --
--------------------
a
--[[ Create game globals and initial conditions. ]]--
function love.load()
    -- circle's constants
    CIRCLE_SIZE = 30
    CIRCLE_H_SPEED = 100
    
    -- circle's variables
    circleX = CIRCLE_SIZE   -- put circle in upper left of screen
    circleY = CIRCLE_SIZE   -- put circle in upper left of screen
end

--[[ Update values of game parameters. ]]--
function love.update(dt)
    -- wrap around
    circleX = circleX + CIRCLE_H_SPEED * dt
    -- if cicle is at or beyone the right edge, move it back to the left edge
    if circleX > (love.graphics.getWidth() + CIRCLE_SIZE) then
        circleX = -CIRCLE_SIZE
    end
end

--[[ Render the game elements. ]]--
function love.draw()
    love.graphics.circle("fill", circleX, circleY, CIRCLE_SIZE)
end