Convert code to increment by Minutes and Hours rather than 100 - actionscript-3

Question

I am trying to convert this block of code to increment like time and minutes (0-60) instead of counting and changing when it hits 100. This is run from a button that adds 1, 5, or 10 to the score. The MC contains three child MC's of digits, each one with a text field that has 10 frames that changes it from 0-9. It works perfect as it is, but I want the 100th digit (or digit3) to change to 1 when the first two digits reach 60 instead of 99. I Can't figure out how I need to incorporate this into the code. Any help would be appreciated. I might even need to rewrite the whole thing.
var SPEED:int = 1;// how fast to count
var NUM_DIGITS:int = 3;// how many digits are there in the score
var _totalScore:int = 0;
var _displayScore:int = 0;
// add an amount to the score
function add(amount:int):void
{
_totalScore += amount;
addEventListener(Event.ENTER_FRAME, updateScoreDisplay);// start the display counting up
}
// this runs every frame to update the score
function updateScoreDisplay(e:Event):void
{
// increment the display score by the speed amount
_displayScore += SPEED;
// make sure the display score is not higher than the actual score
if (_displayScore > _totalScore)
{
_displayScore = _totalScore;
}
var scoreStr:String = String(_displayScore);// cast displayScore as a String
// add leading zeros
while (scoreStr.length < NUM_DIGITS)
{
scoreStr = "0" + scoreStr;
}
// loop through and update each digit
for (var i:int = 0; i < NUM_DIGITS; i++)
{
var num = int(scoreStr.charAt(i));
this["digit" + (i + 1)].gotoAndStop(num+1);
}
// set the digit mc to the right frame;
// if the display score is equal to the total score remove the enterframe event
if (_totalScore == _displayScore)
{
removeEventListener(Event.ENTER_FRAME, updateScoreDisplay);
}
}

Answer 1

Are you changing the actual calculated score? Or just the label that displays the score?
If you want to keep the calculated score as a normal number but only change the way you display it, use this:
var seconds:String = (_displayScore % 60).toString();
var minutes:String = Math.floor(_displayScore / 60).toString();
if(seconds.length == 1)
seconds = "0" + seconds;
var scoreStr:String = minutes + seconds;

Answer 2

I'd rather rewrite the above to something that fits your current requirements.
Here's an example:
Main.as
package {
import flash.display.Sprite;
import flash.events.Event;
[SWF(frameRate="24", backgroundColor="#FFFFFF", width="400", height="240")]
public class Main extends Sprite {
private static const STOP_AT_HOUR:uint = 2;
private static const STOP_AT_MINUTES:uint = 31;
public function Main() {
var tracker:Tracker = new Tracker();
startTracking(tracker, STOP_AT_HOUR, STOP_AT_MINUTES,
function onTrackingProgress(tracker:Tracker):void {
updateVisualElements(tracker);
});
}
private function startTracking(tracker:Tracker, stopAtHour:uint, stopAtMinutes:uint, onProgress:Function):void {
addEventListener(Event.ENTER_FRAME, function onEnterFrame(event:Event):void {
onProgress(tracker.increment());
if (tracker.hours == stopAtHour && tracker.minutes == stopAtMinutes) {
removeEventListener(Event.ENTER_FRAME, onEnterFrame);
trace("Maximum bounds have been reached; tracking stopped.");
}
});
}
private function updateVisualElements(tracker:Tracker):void {
var hoursString: String = appendLeadingZero(tracker.hours);
var minutesString:String = appendLeadingZero(tracker.minutes);
trace("Tracked time: " + hoursString + ":" + minutesString);
try {
// update visual elements that display hour
this["digit0"].gotoAndPlay(uint(hoursString.charAt(0)) + 1);
this["digit1"].gotoAndPlay(uint(hoursString.charAt(1)) + 1);
// update visual elements that display minutes
this["digit2"].gotoAndPlay(uint(minutesString.charAt(0)) + 1);
this["digit3"].gotoAndPlay(uint(minutesString.charAt(1)) + 1);
} catch (error: Error) {
// does not work because there are no visual elements named "digit0", "digit1", "digit2", "digit3"
// in this example; the above code is purely demonstrative to show how such visual elements
// could be updated using the tracker information
}
}
private function appendLeadingZero(temporalValue:uint):String {
if (temporalValue >= 100) throw new ArgumentError("Implementation missing for values above 99");
return temporalValue < 10 ? String("0" + temporalValue) : String(temporalValue);
}
}
}
Tracker.as
package {
public class Tracker {
private var _hours:uint = 0;
private var _minutes:uint = 0;
private var minutesResetValue:uint;
public function Tracker(minutesResetValue:uint = 60) {
this.minutesResetValue = minutesResetValue;
}
public function increment():Tracker {
_minutes++;
if (_minutes == minutesResetValue) {
_minutes = 0;
_hours++;
}
return this;
}
public function get hours():uint {
return _hours;
}
public function get minutes():uint {
return _minutes;
}
}
}
Running the above code would output:
[trace] Tracked time: 00:01
[trace] Tracked time: 00:02
[trace] Tracked time: 00:03
[trace] Tracked time: 00:04
[trace] Tracked time: 00:05
[trace] Tracked time: 00:06
[trace] Tracked time: 00:07
[trace] Tracked time: 00:08
[trace] Tracked time: 00:09
[trace] Tracked time: 00:10
[trace] Tracked time: 00:11
[trace] Tracked time: 00:12
[trace] Tracked time: 00:13
[trace] Tracked time: 00:14
[trace] Tracked time: 00:15
[trace] Tracked time: 00:16
[trace] Tracked time: 00:17
[trace] Tracked time: 00:18
[trace] Tracked time: 00:19
[trace] Tracked time: 00:20
[trace] Tracked time: 00:21
[trace] Tracked time: 00:22
[trace] Tracked time: 00:23
[trace] Tracked time: 00:24
[trace] Tracked time: 00:25
[trace] Tracked time: 00:26
[trace] Tracked time: 00:27
[trace] Tracked time: 00:28
[trace] Tracked time: 00:29
[trace] Tracked time: 00:30
[trace] Tracked time: 00:31
[trace] Tracked time: 00:32
[trace] Tracked time: 00:33
[trace] Tracked time: 00:34
[trace] Tracked time: 00:35
[trace] Tracked time: 00:36
[trace] Tracked time: 00:37
[trace] Tracked time: 00:38
[trace] Tracked time: 00:39
[trace] Tracked time: 00:40
[trace] Tracked time: 00:41
[trace] Tracked time: 00:42
[trace] Tracked time: 00:43
[trace] Tracked time: 00:44
[trace] Tracked time: 00:45
[trace] Tracked time: 00:46
[trace] Tracked time: 00:47
[trace] Tracked time: 00:48
[trace] Tracked time: 00:49
[trace] Tracked time: 00:50
[trace] Tracked time: 00:51
[trace] Tracked time: 00:52
[trace] Tracked time: 00:53
[trace] Tracked time: 00:54
[trace] Tracked time: 00:55
[trace] Tracked time: 00:56
[trace] Tracked time: 00:57
[trace] Tracked time: 00:58
[trace] Tracked time: 00:59
[trace] Tracked time: 01:00
[trace] Tracked time: 01:01
[trace] Tracked time: 01:02
[trace] Tracked time: 01:03
[trace] Tracked time: 01:04
[trace] Tracked time: 01:05
[trace] Tracked time: 01:06
[trace] Tracked time: 01:07
[trace] Tracked time: 01:08
[trace] Tracked time: 01:09
[trace] Tracked time: 01:10
[trace] Tracked time: 01:11
[trace] Tracked time: 01:12
[trace] Tracked time: 01:13
[trace] Tracked time: 01:14
[trace] Tracked time: 01:15
[trace] Tracked time: 01:16
[trace] Tracked time: 01:17
[trace] Tracked time: 01:18
[trace] Tracked time: 01:19
[trace] Tracked time: 01:20
[trace] Tracked time: 01:21
[trace] Tracked time: 01:22
[trace] Tracked time: 01:23
[trace] Tracked time: 01:24
[trace] Tracked time: 01:25
[trace] Tracked time: 01:26
[trace] Tracked time: 01:27
[trace] Tracked time: 01:28
[trace] Tracked time: 01:29
[trace] Tracked time: 01:30
[trace] Tracked time: 01:31
[trace] Tracked time: 01:32
[trace] Tracked time: 01:33
[trace] Tracked time: 01:34
[trace] Tracked time: 01:35
[trace] Tracked time: 01:36
[trace] Tracked time: 01:37
[trace] Tracked time: 01:38
[trace] Tracked time: 01:39
[trace] Tracked time: 01:40
[trace] Tracked time: 01:41
[trace] Tracked time: 01:42
[trace] Tracked time: 01:43
[trace] Tracked time: 01:44
[trace] Tracked time: 01:45
[trace] Tracked time: 01:46
[trace] Tracked time: 01:47
[trace] Tracked time: 01:48
[trace] Tracked time: 01:49
[trace] Tracked time: 01:50
[trace] Tracked time: 01:51
[trace] Tracked time: 01:52
[trace] Tracked time: 01:53
[trace] Tracked time: 01:54
[trace] Tracked time: 01:55
[trace] Tracked time: 01:56
[trace] Tracked time: 01:57
[trace] Tracked time: 01:58
[trace] Tracked time: 01:59
[trace] Tracked time: 02:00
[trace] Tracked time: 02:01
[trace] Tracked time: 02:02
[trace] Tracked time: 02:03
[trace] Tracked time: 02:04
[trace] Tracked time: 02:05
[trace] Tracked time: 02:06
[trace] Tracked time: 02:07
[trace] Tracked time: 02:08
[trace] Tracked time: 02:09
[trace] Tracked time: 02:10
[trace] Tracked time: 02:11
[trace] Tracked time: 02:12
[trace] Tracked time: 02:13
[trace] Tracked time: 02:14
[trace] Tracked time: 02:15
[trace] Tracked time: 02:16
[trace] Tracked time: 02:17
[trace] Tracked time: 02:18
[trace] Tracked time: 02:19
[trace] Tracked time: 02:20
[trace] Tracked time: 02:21
[trace] Tracked time: 02:22
[trace] Tracked time: 02:23
[trace] Tracked time: 02:24
[trace] Tracked time: 02:25
[trace] Tracked time: 02:26
[trace] Tracked time: 02:27
[trace] Tracked time: 02:28
[trace] Tracked time: 02:29
[trace] Tracked time: 02:30
[trace] Tracked time: 02:31
[trace] Maximum bounds have been reached; tracking stopped.