// @
// THE COROUTINE
/// <summary>
/// This is the main algorithm. Executes all tasks, one after the
/// other, calling their callbacks according to type, time and queue
/// config.
/// </summary>
private IEnumerator ExecuteQueue()
{
_isPlaying = true;
int reverseLastTask = -1; // Important: This value needs to be reset to default on most queue changes
_lastPlayExecutedCount = 0;
while (_currentTask < _tasks.Count)
{
// Current task to be executed
int taskId = _currentTask;
if (_isReversed)
{
taskId = _tasks.Count - 1 - _currentTask;
}
ttTask currentTask = _tasks[taskId];
// Next task (or previous if the queue is backward)
_currentTask++;
// Avoid executing a task twice when reversed and the queue
// hasn't reached the end
if (taskId == reverseLastTask)
{
continue;
}
reverseLastTask = taskId;
// Let's wait
// 1 For secuencial Adds or Loops before their first execution
// 2 Maybe a callback is trying to modify his own queue
yield return(ttYield.EndOfFrame);
// It's a loop
if (currentTask.isLoop)
{
// Holds the duration
float loopDuration = currentTask.time;
// Func<float> added
if (currentTask.timeByFunc != null)
{
loopDuration += currentTask.timeByFunc();
}
// Nothing to do, skip
if (loopDuration == 0)
{
continue;
}
// Loops will always need a handler
ttHandler loopHandler = new ttHandler();
loopHandler.self = this;
loopHandler.isLooping = true;
loopHandler.isReversed = _isReversed;
// Negative time means the loop is infinite
bool isInfinite = loopDuration < 0;
// T quotient
float tRate = isInfinite ? 0 : 1 / loopDuration;
// Progresion depends on current direction
if (loopHandler.isReversed)
{
loopHandler.t = 1f;
tRate = -tRate;
}
// While looping and, until time or infinite
while (loopHandler.isLooping && (loopHandler.isReversed ? loopHandler.t >= 0 : loopHandler.t <= 1))
{
// Check for queue reversal
if (_isReversed != loopHandler.isReversed)
{
tRate = -tRate;
loopHandler.isReversed = _isReversed;
}
float unityDeltaTime = Time.deltaTime;
// Completion% from 0 to 1
if (!isInfinite)
{
loopHandler.t += tRate * unityDeltaTime;
}
// On finite loops this .deltaTime is sincronized with
// the exact loop duration
loopHandler.deltaTime =
isInfinite
? unityDeltaTime
: 1 / (loopDuration - loopHandler.timeSinceStart) * unityDeltaTime;
// .deltaTime is also reversed
if (loopHandler.isReversed)
{
loopHandler.deltaTime = -loopHandler.deltaTime;
}
// A classic
loopHandler.timeSinceStart += unityDeltaTime;
// Pause?
while (_isPaused)
{
yield return(null);
}
// Loops will always have a callback with a handler
currentTask.callbackWithHandler(loopHandler);
// Handler .WaitFor(
if (loopHandler.yieldsToWait != null)
{
for (int i = 0, len = loopHandler.yieldsToWait.Count; i < len; i++)
{
yield return(loopHandler.yieldsToWait[i]);
}
loopHandler.yieldsToWait.Clear();
}
// Minimum sane delay
if (loopHandler.yieldsToWait == null)
{
yield return(null);
}
}
// Executed +1
_executedCount += 1;
_lastPlayExecutedCount += 1;
}
// It's a timed callback
else
{
// Holds the delay
float delayDuration = currentTask.time;
// Func<float> added
if (currentTask.timeByFunc != null)
{
delayDuration += currentTask.timeByFunc();
}
// Time delay
if (delayDuration > 0)
{
yield return(ttYield.Seconds(delayDuration));
}
// Pause?
while (_isPaused)
{
yield return(null);
}
// Normal callback
if (currentTask.callback != null)
{
currentTask.callback();
}
// Callback with handler
if (currentTask.callbackWithHandler != null)
{
ttHandler handler = new ttHandler();
handler.self = this;
handler.t = 1;
handler.timeSinceStart = delayDuration;
handler.deltaTime = Time.deltaTime;
currentTask.callbackWithHandler(handler);
// Handler WaitFor
if (handler.yieldsToWait != null)
{
for (int i = 0, len = handler.yieldsToWait.Count; i < len; i++)
{
yield return(handler.yieldsToWait[i]);
}
handler.yieldsToWait.Clear();
}
// Minimum sane delay
if (delayDuration <= 0 && handler.yieldsToWait == null)
{
yield return(null);
}
}
else if (delayDuration <= 0)
{
yield return(null);
}
// Executed +1
_executedCount += 1;
_lastPlayExecutedCount += 1;
}
// Consume mode removes the task after execution #todo Need to
// be tested with .Reverse() stuff
if (_isConsuming)
{
_currentTask -= 1;
_tasks.Remove(currentTask);
reverseLastTask = -1; // To default
}
// On Yoyo mode the queue is reversed at the end, only once per
// play without Repeat mode
if (_isYoyo && _currentTask >= _tasks.Count && (_lastPlayExecutedCount <= _tasks.Count || _isRepeating))
{
this.Reverse();
reverseLastTask = -1; // To default
}
// Repeats on Repeat mode
if (_isRepeating && _tasks.Count > 0 && _currentTask >= _tasks.Count)
{
_currentTask = 0;
reverseLastTask = -1; // To default
}
// Just at the end of a complete queue execution
if (_tasks.Count > 0 && _currentTask >= _tasks.Count)
{
// A new cycle begins
_waiting.Clear();
}
}
// Done!
_isPlaying = false;
yield return(null);
}
// ^
// THE COROUTINE
/// <summary>
/// This is the main algorithm. Executes all tasks, one after the
/// other, calling their callbacks according to type, time and queue
/// config.
/// </summary>
IEnumerator ExecuteQueue()
{
_isPlaying = true;
while (_currentTask < _tasks.Count)
{
// Current
ttTask currentTask = _tasks[_currentTask];
// Next
_currentTask += 1;
// Let's wait
// 1 For secuencial Adds or Loops before their first execution
// 2 Maybe a callback is trying to modify his own queue
yield return new WaitForEndOfFrame();
// It's a loop
if (currentTask.isLoop)
{
// Nothing to do, skip
if (currentTask.time == 0)
continue;
// Loops always need a handler
ttHandler loopHandler = new ttHandler();
loopHandler.self = this;
// Negative time means the loop is infinite
bool isInfinite = currentTask.time < 0;
// T quotient
float tRate = isInfinite ? 0 : 1 / currentTask.time;
// While active and, until time or infinite
while (loopHandler.isActive && loopHandler.t <= 1)
{
float unityDeltaTime = Time.deltaTime;
// Completion % from 0 to 1
if (!isInfinite)
loopHandler.t += tRate * unityDeltaTime;
// On finite loops this .deltaTime is sincronized with
// the exact loop duration
loopHandler.deltaTime =
isInfinite
? unityDeltaTime
: 1 / (currentTask.time - loopHandler.timeSinceStart) * unityDeltaTime;
loopHandler.timeSinceStart += unityDeltaTime;
// Pause?
while (_isPaused)
yield return null;
// Loops always have a callback with a handler
currentTask.callbackWithHandler(loopHandler);
// Handler .WaitFor(
if (loopHandler.yieldsToWait != null)
{
foreach (YieldInstruction yi in loopHandler.yieldsToWait)
yield return yi;
loopHandler.yieldsToWait.Clear();
}
// Minimum sane delay
if (loopHandler.yieldsToWait == null)
yield return null;
}
}
// It's a timed callback
else
{
// Time delay
if (currentTask.time > 0)
yield return new WaitForSeconds(currentTask.time);
// Yield delay
if (currentTask.yieldInstruction != null)
yield return currentTask.yieldInstruction;
// Pause?
while (_isPaused)
yield return null;
// Normal callback
if (currentTask.callback != null)
currentTask.callback();
// Callback with handler
ttHandler handler = new ttHandler();
handler.self = this;
if (currentTask.callbackWithHandler != null)
{
handler.isActive = true;
handler.t = 1;
handler.timeSinceStart = currentTask.time;
handler.deltaTime = Time.deltaTime;
currentTask.callbackWithHandler(handler);
// Handler WaitFor
if (handler.yieldsToWait != null)
{
foreach (YieldInstruction yi in handler.yieldsToWait)
yield return yi;
handler.yieldsToWait.Clear();
}
}
// Minimum sane delay
if (currentTask.time <= 0 && handler.yieldsToWait == null)
yield return null;
}
// Consume mode removes the task after execution
if (_isConsuming)
{
_currentTask -= 1;
_tasks.Remove(currentTask);
}
}
// Repeats on Repeat mode (if needed)
if (_isRepeating && _tasks.Count > 0)
{
_currentTask = 0;
_currentCoroutine = _instance.StartCoroutine(ExecuteQueue());
}
// Done!
else
{
_isPlaying = false;
}
yield return null;
}