Timer

The timer functions allow timing of events in milliseconds. The timer is a started with the timer_reset

command which takes an integer variable.

To find the amount of time that the timer has been running for use the tr_elapsed function. The first argument is a variable to return the elapsed time in and the second argument is the timer to get.

There are two functions for checking if a timer has expired the timer_isexpired and tr_regular. They both take the same 3 arguments the first is an evl_bool which gets set to true if the timer has expired, the second is the timer argument and the final argument is the timeout of the timer.

The timer_isexpired function just indicates when the timeout has expired, the tr_regular function indicates that the time out has expired and then resets the timer.

The following shows an example of the timer in action.

//---------------------------------------

// File: Timer.e

//---------------------------------------

//---------------------------------------

// Block: go

//---------------------------------------

block Go

Expired = false

//Start two timers

tr_reset Timer1

tr_reset Timer2

//Check if timed out

while Expired == false

//check if the loop timer has expired

tr_isexpired Expired Timer1 5000

//check if the print timer has expired

tr_regular Expired2 Timer2 250

//if timer2 has expired then print message

if Expired2 == true

//print the expired time

tr_elapsed ExpiredTime Timer1

outl ExpiredTime

_if

_while

outl "Finished"

_block