WINDOW_WIDTH = 1280
WINDOW_HEIGHT = 720

--[[ we want to use the push library to simulate that we are coding on a smaller raster size.
     nes was 240 p
     ]]
VIRTUAL_WIDTH = 432
VIRTUAL_HEIGHT = 243

PADDLE_SPEED = 200 -- pixels per second


push = require 'push'


function love.load()

         love.graphics.setDefaultFilter('nearest','nearest')

         smallFont = love.graphics.newFont('04B_30__.ttf',8)
         scoreFont = love.graphics.newFont('04B_30__.ttf',14)

         love.graphics.setFont(smallFont)

         push:setupScreen(VIRTUAL_WIDTH,VIRTUAL_HEIGHT, WINDOW_WIDTH, WINDOW_HEIGHT, {
                                                        fullscreen = false,
                                                        vsync = true,
                                                        resizeable = false
                                                        })

        player1Score = 0
        player2Score = 0

        player1Y = 30
        player2Y = VIRTUAL_HEIGHT - 40
end

function love.draw()
        push:apply('start')
        love.graphics.clear(40/255,45/255,52/255,255/255) -- map values to 0-1
        scoreFont = love.graphics.newFont('TitilliumText22L005-webfont.ttf',20)
        player1Y = 30
        player2Y = 40
        love.graphics.setFont(smallFont)
        love.graphics.printf('Hello Pong!', 0, 20, VIRTUAL_WIDTH, 'center')

        love.graphics.setFont(scoreFont)
        love.graphics.print(player1Score, VIRTUAL_WIDTH/2  - 50, VIRTUAL_HEIGHT /3)
        love.graphics.print(player2Score, VIRTUAL_WIDTH/2+30, VIRTUAL_HEIGHT/3)

        love.graphics.rectangle('fill', VIRTUAL_WIDTH/2 -2, VIRTUAL_WIDTH/2-2, 4, 4) -- center ball

        love.graphics.rectangle('fill', 10, player1Y, 5, 20) -- left side
        love.graphics.rectangle('line', VIRTUAL_WIDTH - 10, player2Y, 5, 20) -- right side
        push:apply('end')
end


function love.update(dt)
        if love.keyboard.isDown('w') then
                player1Y = player1Y - PADDLE_SPEED * dt -- remember that higher numbers are down... dt is delta time
        elseif love.keyboard.isDown('s') then
                player1Y = player1Y + PADDLE_SPEED * dt
        end
        if love.keyboard.isDown('up') then
                player2Y = player2Y - PADDLE_SPEED * dt --down is positive
        elseif love.keyboard.isDown('down') then
                player2Y = player2Y + PADDLE_SPEED * dt -- up is negative
        end
end

function love.keypressed(key)
        if key == 'escape' then -- can be accessed by string name
                love.event.quit() --quit() is a function love gives us to terminate
        end
end