display.setStatusBar(display.HiddenStatusBar)
local storyboard = require "storyboard"
local scene = storyboard.newScene()
require("physics")
require("sprite")

----------------------------
-- Functions
----------------------------

local function collisionGround(event)
    event.other:removeSelf()
end

local function collisionCharacter(event)
    if (event.other.type == "penny") then
        storyboard.money = storyboard.money + 0.01
        event.other:removeSelf()
    elseif (event.other.type == "nickel") then
        storyboard.money = storyboard.money + 0.05
        event.other:removeSelf()
    elseif (event.other.type == "dime") then
        storyboard.money = storyboard.money + 0.10
        event.other:removeSelf()
    elseif (event.other.type == "quarter") then
        storyboard.money = storyboard.money + 0.25
        event.other:removeSelf()
    elseif (event.other.type == "rock") then
        storyboard.gotoScene("gameover", "slideLeft", 1000)
    end
    textMoney.text = string.format("$%.02f", storyboard.money)
end

local motion = 0
local isPaused = false

local function moveLeft(event)
    if not isPaused then
        motion = -9
        buttonLeft:prepare("leftt")
        buttonLeft:play()
        character:prepare("charml")
        character:play()
        character.type = "left"
    end
end

local function moveRight(event)
    if not isPaused then
        motion = 9
        buttonRight:prepare("rightt")
        buttonRight:play()
        character:prepare("charmr")
        character:play()
        character.type = "right"
    end
end

local function moveCharacter(event)
    character.x = character.x + motion
    if character.x < 50 then character.x = 50
    elseif character.x > 910 then character.x = 910 end
    buttonLeft:toFront()
    buttonRight:toFront()
end

local function stopCharacter(event)
    if event.phase == "ended" then
        motion = 0
        buttonLeft:prepare("leftu")
        buttonLeft:play("leftu")
        buttonRight:prepare("rightu")
        buttonRight:play("rightu")
        if (character.type == "left") then
            character:prepare("charsl")
            character:play("charsl")
        elseif (character.type == "right") then
            character:prepare("charsr")
            character:play("charsr")
        end
    end
end

local function pauseGame(scene)
    isPaused = not isPaused
    if isPaused then
        buttonPause:prepare("pauset")
        buttonPause:play()
        physics.pause()
        timer.pause(createCoinsTimer)
    else
        buttonPause:prepare("pauseu")
        buttonPause:play()
        physics.start()
        timer.resume(createCoinsTimer)
    end
end

----------------------------
-- Storyboard
----------------------------

function scene:createScene(event)
    local group = self.view
    local background = display.newImage(group, "visuals/game_background.png", 0, 0)
    ground = display.newImage(group, "visuals/game_ground.png", 0, 590)
        physics.addBody(ground, "static")
        ground:addEventListener("collision", collisionGround)
    local buttonSheet = sprite.newSpriteSheet("visuals/game_buttons.png", 75, 75)
    local buttonLeftSet = sprite.newSpriteSet(buttonSheet, 1, 2)
        sprite.add(buttonLeftSet, "leftu", 1, 1, 60000, 0)
        sprite.add(buttonLeftSet, "leftt", 2, 1, 60000, 0)
    local buttonRightSet = sprite.newSpriteSet(buttonSheet, 3, 2)
        sprite.add(buttonRightSet, "rightu", 3, 1, 60000, 0)
        sprite.add(buttonRightSet, "rightt", 4, 1, 60000, 0)
    local buttonPauseSet = sprite.newSpriteSet(buttonSheet, 5, 2)
        sprite.add(buttonPauseSet, "pauseu", 5, 1, 60000, 0)
        sprite.add(buttonPauseSet, "pauset", 6, 1, 60000, 0)
    buttonLeft = sprite.newSprite(buttonLeftSet)
        buttonLeft:addEventListener("touch", moveLeft)
        buttonLeft.x = 57.5
        buttonLeft.y = 582.5
        group:insert(buttonLeft)
    buttonRight = sprite.newSprite(buttonRightSet)
        buttonRight:addEventListener("touch", moveRight)
        buttonRight.x = 902.5
        buttonRight.y = 582.5
        group:insert(buttonRight)
    buttonPause = sprite.newSprite(buttonPauseSet)
        buttonPause:addEventListener("tap", function(event), pauseGame(self) end)
        buttonPause.x = 902.5
        buttonPause.y = 57.5
        group:insert(buttonPause)
    local characterSheet = sprite.newSpriteSheet("visuals/game_character.png", 100, 100)
    local characterSet = sprite.newSpriteSet(characterSheet, 1, 8)
        sprite.add(characterSet, "charsl", 1, 1, 60000, 0)
        sprite.add(characterSet, "charml", 2, 3, 150, 0)
        sprite.add(characterSet, "charsr", 5, 1, 60000, 0)
        sprite.add(characterSet, "charmr", 6, 3, 150, 0)
    character = sprite.newSprite(characterSet)
        physics.addBody(character, "static")
        character:addEventListener("collision", collisionCharacter)
        self:addEventListener("enterFrame", moveCharacter)
        self:addEventListener('Stop', stopCharacter)
        character.x = display.contentWidth / 2
        character.y = 540
        group:insert(character)
    storyboard.money = 0
    textMoney = display.newText(string.format("$%.02f", storyboard.money), 0, 20, native.systemFont, 75)
        textMoney:setReferencePoint(display.CenterReferencePoint)
        textMoney.x = display.contentWidth / 2
        textMoney:setTextColor(0, 0, 0)
        group:insert(textMoney)

    Runtime:addEventListener('enterFrame', self)
    Runtime:addEventListener('touch', self)
end

local function createCoins(scene)
    local group = self.view
    local coinSheet = sprite.newSpriteSheet("visuals/game_coins.png", 50, 50)
    local coinSet = sprite.newSpriteSet(coinSheet, 1, 25)
        sprite.add(coinSet, "penny", 1, 5, 250, 0)
        sprite.add(coinSet, "nickel", 6, 5, 250, 0)
        sprite.add(coinSet, "dime", 11, 5, 250, 0)
        sprite.add(coinSet, "quarter", 16, 5, 250, 0)
        sprite.add(coinSet, "rock", 21, 5, 250, 0)
    local coin = sprite.newSprite(coinSet)
        physics.addBody(coin, "dynamic")
        coin.isSensor = true
        coin.isFixedRotation = true
    local chooseCoin = math.random(1, 100)
    if chooseCoin >= 1 and chooseCoin <= 25 then
        coin.type = "penny"
    elseif chooseCoin >= 26 and chooseCoin <= 45 then
        coin.type = "nickel"
    elseif chooseCoin >= 46 and chooseCoin <= 65 then
        coin.type = "dime"
    elseif chooseCoin >= 66 and chooseCoin <= 80 then
        coin.type = "quarter"
    elseif chooseCoin >= 81 and chooseCoin <= 100 then
        coin.type = "rock"
    end
    coin:prepare(coin.type)
    coin:play()
    local chooseLocation = math.random(0, 1)
        coin.y = 400
        coin.x =  -25 + chooseLocation * 1010
        coin:applyLinearImpulse(0.2 - (chooseLocation * 0.4), -math.random(0.50, 3.45) / 10, coin.x, coin.y)
    function coin:removeSelf()
        scene:removeEventListener('exitScene', self)
        display.remove(coin)
    end
    function coin:exitScene(event)
        timer.performWithDelay(1,
            function(...)
                self:removeSelf()
            end
        )

    end
    scene:addEventListener('exitScene', coin)
    group:insert(coin)
end

local function sceneEnterFrame(self, event)
    if not isPaused then
        self:dispatchEvent(event)
    end
end

local function sceneTouch(self, event)
    if not isPaused then
        self:dispatchEvent{name="Stop"}
    end
end

function scene:enterScene(event)
    physics.setGravity(0, 9.8)
    physics.start()
    scene.enterFrame = sceneEnterFrame
    scene.touch = sceneTouch
    createCoinsTimer = timer.performWithDelay(500, function() createCoins(self) end, 0)
end

function scene:exitScene(event)
    physics.stop()
    self.enterFrame = nil
    self.touch = nil
    timer.cancel(createCoinsTimer)
    storyboard.purgeScene("game")
end

function scene:destroyScene(event)
    Runtime:removeEventListener('enterFrame', self)
    Runtime:removeEventListener('touch', moveCharacter)
end

scene:addEventListener("createScene", scene)
scene:addEventListener("enterScene", scene)
scene:addEventListener("exitScene", scene)
scene:addEventListener("destroyScene", scene)
return scene