performwithdelay not executing after specified interval

Getting Started Newbie Questions
#1

Hi, its my first post here, and i found the corona a really interesting framework to work with.

Scenario: I have an object which has touch event registered. i want the touch event to perform two different behaviours based on the the touch e.g short touch(like a tap) and long touch. if a user just tap it i want it to call one function other wise call another function. here is the code i have written to tackle this problem. However it is executing the climbDown only one time and not after the intervals specified. i know even if a long tap is presed it still execute climbUp().

Question: How to i use the same object to execute climbUp method when he just tap the object and to execute another method when he tap for long.

CODE:

local function countTaps(event)

     if event.phase == “began” then

       climbUp()

       timeClimb = timer.performWithDelay( 150, climbDown )

       return true

    elseif event.phase == “ended” then

      timer.cancel(timeClimb)

end

#2

A tap is probably less than 150 ms in which case you’re potentially cancelling the timer before it has time to fire.

Rob

#3

You could try something like this.  (I used something this in a  small game I was working on a while back)

this sample code should do what I think you are trying to do:

local beginTime = 0 local function climbUp() print("CLIMB UP") end local function climbDown() print("CLIMB DOWN") end local function onTouch(e) if e.phase == "began" then beginTime = system.getTimer() elseif e.phase == "ended" then diff = system.getTimer() - beginTime if diff \> 200 then climbDown() else climbUp() end end end local rect = display.newRect(100,100, 50, 50) rect:addEventListener("touch", onTouch)

system.getTimer() returns milliseconds

Good luck.

Bob

#4

You will need to track the time Delta between began and ended and then perform whatever code depending on whether the delta is < 200 ms or not. This gives you the difference between a short touch and a long touch.

#5

ok thanks for all the answers and your time, however i solved it using the existing code. which is

local function countTaps(event)

–timeClimb = timer.performWithDelay( 150, climbDown )

     if event.phase == “began” then

              --climbUp()

    timeClimb = timer.performWithDelay( 100, climbDown, 0)

       return true

    elseif event.phase == “ended” then

      timer.cancel(timeClimb)

end

i forgot to add 0 to the end of the timer.performWithDelay which lets you run the function infinite time unless cancelled. earlier it was only executing it once.

#6

A tap is probably less than 150 ms in which case you’re potentially cancelling the timer before it has time to fire.

Rob

#7

You could try something like this.  (I used something this in a  small game I was working on a while back)

this sample code should do what I think you are trying to do:

local beginTime = 0 local function climbUp() print("CLIMB UP") end local function climbDown() print("CLIMB DOWN") end local function onTouch(e) if e.phase == "began" then beginTime = system.getTimer() elseif e.phase == "ended" then diff = system.getTimer() - beginTime if diff \> 200 then climbDown() else climbUp() end end end local rect = display.newRect(100,100, 50, 50) rect:addEventListener("touch", onTouch)

system.getTimer() returns milliseconds

Good luck.

Bob

#8

You will need to track the time Delta between began and ended and then perform whatever code depending on whether the delta is < 200 ms or not. This gives you the difference between a short touch and a long touch.

#9

ok thanks for all the answers and your time, however i solved it using the existing code. which is

local function countTaps(event)

–timeClimb = timer.performWithDelay( 150, climbDown )

     if event.phase == “began” then

              --climbUp()

    timeClimb = timer.performWithDelay( 100, climbDown, 0)

       return true

    elseif event.phase == “ended” then

      timer.cancel(timeClimb)

end

i forgot to add 0 to the end of the timer.performWithDelay which lets you run the function infinite time unless cancelled. earlier it was only executing it once.