countdown.lua

--
-- Project: What the Shell?!
-- Description: 
--
-- Version: 1.0
--
-- Copyright 2016 Three Ring Ranch. All Rights Reserved.
-- 

-- most commonly used screen coordinates
local centerX = display.contentCenterX
local centerY = display.contentCenterY


local countdown = {}

function countdown.nextNumber()
	--print("Inside countdown.nextNumber")
	countdown.number = countdown.number - 1
	if countdown.number > 0 then
		countdown.text.text = countdown.number
		countdown.text:scale ( 15, 15 )
		countdown.trans = transition.to ( countdown.text, {time=1000, xScale=0.1, yScale=0.1, onComplete=countdown.nextNumber })
	else
		display.remove( countdown.text )
		countdown.runAfter()
	end
end

function countdown.init(grp, numSeconds, runAfter, delay)

	if countdown.number ~= nil and countdown.number > 0 then return end

	local numSecs = numSeconds or 3
	local delay = delay or 0
	countdown.number = numSecs
	countdown.runAfter = runAfter
	countdown.text = display.newEmbossedText(grp, tostring(countdown.number), centerX, centerY, mainFont, 148 )
	countdown.text.alpha = 0
	timer.performWithDelay ( delay*1000, function() countdown.text.alpha=1; end )
	countdown.trans = transition.to ( countdown.text, {delay=delay*1000, time=1000, xScale=0.1, yScale=0.1, onComplete=countdown.nextNumber })
	--print("delay=" .. delay*1000)
	--print("countdown.trans", countdown.trans)
	--print("countdown.number", countdown.number)
end

return countdown