How can I put a timer in my game?

Question

I have been trying to make a score keeper for my game in Corona SDK, but to no avail. How can I make a score keeper that adds one every second then saves the high score?

Answer 1

I normally don't just give solutions like this, for the future try to break your problem into smaller problems. Start with, how can I show text on my screen? Then go for, how can I update the text on my screen? And then start looking for ways to update every second. etc. Makes it a lot easier.

-- Variables
local score = 0
local scoreTxt = display.newText( "Score: "..score, 100, 200, native.systemFont, 16 )
scoreTxt:setFillColor( 1, 0, 0 )

-- Listener for your timer, updates score variable and updates the text
local function scoreKeeper( event )
    score = score + 1
    scoreTxt.text = "Score: "..score
end

-- Timer
timer.performWithDelay( 1000, scoreKeeper, -1 )