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

--------------------
-- LÖVE functions --
--------------------

--[[ 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
    isMoveRight = true      -- whether the circle is moving right or left (only needed for bounce)
end

--[[ Update values of game parameters. ]]--
function love.update(dt)
    -- "clip" the motion
    circleX = circleX + CIRCLE_H_SPEED * dt
    if circleX > (love.graphics.getWidth() - CIRCLE_SIZE) then
        circleX = love.graphics.getWidth() - CIRCLE_SIZE
    end
    
end

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