Class = require 'class'
push = require 'push'
WINDOW_WIDTH = 1280
WINDOW_HEIGHT = 720

VIRTUAL_WIDTH = 432
VIRTUAL_HEIGHT = 243

PADDLE_SPEED = 200

Class = require 'class'

require 'Ball' -- require ball and paddle will have access to the class variable because they are declared first
require 'Paddle'



function love.load()
        math.randomseed(os.time())
         love.graphics.setDefaultFilter('nearest','nearest')


         paddle1 = Paddle(5, 20, 5, 20) -- instatiate a paddle object. when you use the parentheses in what is called the constructor, init gets called through the class library implicitly
         paddle2 = Paddle(VIRTUAL_WIDTH - 10, VIRTUAL_HEIGHT - 30, 5, 20)
         ball = Ball(VIRTUAL_WIDTH/2 - 2, VIRTUAL_HEIGHT/2 - 2, 5, 5)
         gameState = 'start'
         smallFont = love.graphics.newFont('04B_30__.ttf',8)
         scoreFont = love.graphics.newFont('TitilliumText22L005-webfont.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
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)
        smallFont = love.graphics.newFont('04B_30__.TTF',13)
        love.graphics.setFont(smallFont)
        if gameState == 'start' then
                love.graphics.printf('Hello Start State!', 0,20, VIRTUAL_WIDTH, 'center')
        elseif gameState == 'play' then
                love.graphics.printf('Hello Play State!', 0, 20, VIRTUAL_WIDTH, 'center')
        end
        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)
        ball:render()--love.graphics.rectangle('fill', ballX, ballY, 4, 4)
        paddle1:render() -- paddle1 render() is now a function stored in Paddle.lua
        paddle2:render()
        --love.graphics.rectangle('fill', 10, player1Y, 5, 20) -- left side
        --love.graphics.rectangle('line', VIRTUAL_WIDTH - 10, player2Y, 5, 20) -- right side

        displayFPS()

        push:apply('end')
end

function love.update(dt)

        paddle1:update(dt)
        paddle2:update(dt)

        ball:render()


        if love.keyboard.isDown('w') then
                paddle1.dy = -PADDLE_SPEED
        elseif love.keyboard.isDown('s') then
                paddle1.dy = PADDLE_SPEED
        else
                paddle1.dy = 0
        end

        if love.keyboard.isDown('up') then
                paddle2.dy = -PADDLE_SPEED
        elseif love.keyboard.isDown('down') then
                paddle2.dy = PADDLE_SPEED
        else
                paddle2.dy = 0
        end
        if gameState == 'play' then
                ball:update(dt)
                --ballX = ballX + ballDX * dt   these will instead be done with update
                --ballY = ballY + ballDY * dt
        end
end
function love.keypressed(key)
        if key == 'escape' then
                love.event.quit()
        elseif key == 'enter' or key == 'return' then
                if gameState == 'start' then
                        gameState = 'play'
                --elseif gameState == 'play' then
                else
                        gameState = 'start'
                        --[[
                                will be copied into ball:reset()
                        ballX = VIRTUAL_WIDTH/2-2
                        ballY = VIRTUAL_HEIGHT/2-2
                        ballDX = math.random(2) == 1 and -100 or 100
                        ballDY = math.random(-50,50)
                        ]]
                        ball:reset()
                end
        end
end

function displayFPS()
        love.graphics.setColor(0,1,0,1) -- toggles color for drawing text... default is white.... RGBT values... could also be 255
        love.graphics.setFont(smallFont)
        love.graphics.print('FPS: ' .. tostring(love.timer.getFPS()), 40, 20) -- .. is the string concatination operator
        -- tostring() will give an integer values which will be incompatible with string
        love.graphics.setColor(1, 1, 1, 1)
end