Using a timer to go through a for loop.

Hi there,

I'm trying to figure out how I would get a for loop to run after a timer has elapsed. So when the timer elapses it circles through the for loop once, then the timer starts again and then goes through when it finish again until the required value has been achieved.

I'm using this with a speed variable so that the speed decreases incrementally rather than instantly as at the moment the for loops seems to go from 10-1 too fast.

public void time(object source, ElapsedEventArgs e)
{
timeB = true;
SlowTimer.Interval = 500;
SlowTimer.Enabled = true;
}

public void decceleration(object source, ElapsedEventArgs e)
{
SlowTimer.Interval = 500; // SlowTimer is the defined out of the scope.
SlowTimer.Enabled = true;
SlowTimer.AutoReset = false;
SlowTimer.Elapsed += new ElapsedEventHandler(time);
int[] slowSpeed = new int[10] {10,9,8,7,6,5,4,3,2,1 }; // new array 1-10

if(timeB == true && SlowTimer.Enabled == true)
{

for (int i = 0; i < 10; i++) // for loop
{
int speed = 0;
speed = slowSpeed[i];
mSpeed = speed; // sets mSpeed to the value of i in the dashSpeed array

timeB = false;

if (mSpeed == 1)
{
horizontalSwimBehaviour(); // changes it back to the normal swimming
rand = 1;
}
}
}
}

Thanks.

If I look well, you never wait for the timer.

Elaborate? Wait for the timer?

You are checking if the timer has finished but with an 'if' instead of a 'while'. I don't know how you are calling the decceleration method, but if you ask for timeB == true and the result is false, the method will just return with no effect, instead of waiting until the result is true.
Doing that with a while would not be the best solution anyway, since it would be very consuming.

Not sure what it is you want, but what you could do is just insert your code inside the timer callback and have it cycle through your array every time it elapses.

Code:

---

int i;
int[] slowSpeed = new int[10] { 10, 9, 8, 7, 6, 5, 4, 3, 2, 1 }; // new array 1-10

public void time(object source, ElapsedEventArgs e)
{
        if (slowSpeed[i++] == 1)
        {
                horizontalSwimBehaviour(); // changes it back to the normal swimming
                rand = 1;
        }

        if (i >= 10)
        {
                SlowTimer.Enabled = false; // disable the timer after all items have been checked
                i = 0; // reset i
        }
}

public void decceleration(object source, ElapsedEventArgs e)
{
        i = 0;

        SlowTimer.Interval = 500; // SlowTimer is the defined out of the scope.
        SlowTimer.AutoReset = true;
        SlowTimer.Elapsed += new ElapsedEventHandler(time);

        SlowTimer.Enabled = true; // enable after setting it up.
        // Start the 'for' loop.
        // To stop the loop just disable the timer.
}

---

So what I want to do is to decrease the speed of an object by 1 everytime the timer elapses, so everytime it goes through a different element of the array it changes the speed value to that.
Thus it going 10-1, speed starts at 10 and ends up at 1.

Been playing around with it and I can't seem to figure out where to put that the "i" within the array is the speed of the object.

Why not call the code from the timer elapsed event and use a running counter to keep track of how many times if has cycled. Would seem to be easier and use less CPU cycles at runtime.