--Hide Status Bar
display.setStatusBar ( display.HiddenStatusBar )
 
--Variables
local wScreen = display.contentWidth
local hScreen = display.contentHeight
local mRandom = math.random
local totalCircles = 20
local screenCircles = 0
local gameTime = 10
local gameReady = false
local gameCountdown
 
--Texts
local displayText = display.newText ( "Wait", 0, 0, native.systemFont, 32 )
displayText:setReferencePoint ( display.BottomLeftReferencePoint )
displayText.x = 0
displayText.y = hScreen
local timeText = display.newText ( gameTime, 0, 0, native.systemFont, 32 )
timeText:setReferencePoint ( display.BottomRightReferencePoint )
timeText.x = wScreen
timeText.y = hScreen
timeText.isVisible = false
 
--Audio
local soundtrack = audio.loadStream ( "Soundtrack.wav" )
local tapSound = media.newEventSound ( "TapSound.wav" )
local winSound = audio.loadSound ( "WinSound.wav" )
local failSound = audio.loadSound ( "FailSound.wav" )
 
--Functions
local spawnCircles = {}
local startGame = {}
local removeCircles = {}
local startCountdown = {}
local gameTimer = {}
local statusGame = {}
 
--Main Function
local function main ()
        audio.play ( soundtrack, {loops = -1} )
        local spawnTimer = timer.performWithDelay ( 200, spawnCircles, totalCircles )
end
 
--Spawn Circles
function spawnCircles ()
        local circle = display.newCircle ( 0, 0, 32 )
        circle.strokeWidth = 4
        circle:setStrokeColor ( 255, 0, 0 )
        circle:setReferencePoint ( display.CenterReferencePoint )
        circle.x = mRandom ( 50, wScreen - 50 )
        circle.y = mRandom ( 50, hScreen - 100 )
        screenCircles = screenCircles + 1
        circle:addEventListener ( "tap", removeCircles )
        --Call Start Game Function
        startGame ()
end
 
--Start Game
function startGame ()
        if ( screenCircles == totalCircles ) then
        gameReady = true
        displayText.text = "Go"
        --Call Countdown Function
        startCountdown ()
        end
end
 
--Remove Circles
function removeCircles (e)
        if ( gameReady == true ) then
        media.playEventSound ( tapSound )
        e.target:removeSelf ()
        screenCircles = screenCircles - 1
        --Getting Status Game
        statusGame ()
        return true
        end
end
 
--Start Countdown
function startCountdown ()
        timeText.isVisible = true
        transition.from ( timeText, {alpha = 0} )
        gameCountdown = timer.performWithDelay ( 1000, gameTimer, gameTime )
end
 
--Game Timer
function gameTimer ()
        transition.from ( timeText, {alpha = 0} )
        gameTime = gameTime - 1
        timeText.text = gameTime
        --Getting Status Game
        statusGame ()
end
 
--Ending Game
function statusGame ()
        if ( screenCircles == 0 and gameTime > 0 ) then
        audio.stop ( soundtrack )
        displayText.text = "Win!"
        audio.play ( winSound )
        timer.cancel ( gameCountdown )
        gameReady = false
        elseif ( screenCircles ~= 0 and gameTime == 0 ) then
        audio.stop ( soundtrack )
        displayText.text = "Fail"
        audio.play ( failSound )
        gameReady = false
        end
end
 
main ()