Stop a function (scoring module) on Collision?

Getting Started Newbie Questions
#1

Hey guys. I’m making a game. You play the game, as time passes your score builds, and when you hit something (lose the game) you go to the restart screen. What I want to do is be able to show the score on the restart screen, but I’m have some trouble because I can’t get the score to stop when you lose the game (when your jet, in this case, collides with something).

My code is something like this:

scoreTxt = display.newText( "Score: 0", .5,.5, "Helvetica", 20) scoreTxt:setFillColor(.5,0,.5) scoreTxt.AnchorX = 0 scoreTxt.x = display.screenOriginX + 450 scoreTxt.y = display.screenOriginY + 20 screenGroup:insert(scoreTxt) score = 0 function updateScore() score = score + 1 scoreTxt.text = score end timer.performWithDelay(1, updateScore, -1) function onCollision(event) if event.phase == "began" then storyboard.gotoScene("restart", "fade", 400) end end Runtime:addEventListener("collision", onCollision)

(I only picked the relevant pieces of code to copy and paste. And I also know the “Score:0” doesn’t actually do anything, but all I care about is having the numbers on the screen.)

How can I stop updateScore from continuing when something collides?

Thanks in advance!

-Tariq

#2

Hi Tariq,

In this case, you need to cancel the repeating timer that is causing the score to update. This means you’ll also need to assign the timer to a variable (handle) so you can reference it.

http://docs.coronalabs.com/api/library/timer/cancel.html

Also, I suggest that you don’t fire the timer ever 1 millisecond… that’s a lot of updating and I think you could manage with something like 50 milliseconds.

Best regards,

Brent

#3

Hi Tariq,

In this case, you need to cancel the repeating timer that is causing the score to update. This means you’ll also need to assign the timer to a variable (handle) so you can reference it.

http://docs.coronalabs.com/api/library/timer/cancel.html

Also, I suggest that you don’t fire the timer ever 1 millisecond… that’s a lot of updating and I think you could manage with something like 50 milliseconds.

Best regards,

Brent