/// <summary> /// Update the tweening factor and call the virtual update function. /// </summary> protected void DoUpdate() { float delta = ignoreTimeScale && !useFixedUpdate ? Time.unscaledDeltaTime : Time.deltaTime; float time = ignoreTimeScale && !useFixedUpdate ? Time.unscaledTime : Time.time; if (!mStarted) { delta = 0; mStarted = true; mStartTime = time + delay; } if (time < mStartTime) { return; } // Advance the sampling factor mFactor += (duration == 0f) ? 1f : amountPerDelta * delta * timeScale; // Loop style simply resets the play factor after it exceeds 1. if (style == Style.Loop) { if (mFactor > 1f) { mFactor -= Mathf.Floor(mFactor); } } else if (style == Style.PingPong) { // Ping-pong style reverses the direction if (mFactor > 1f) { mFactor = 1f - (mFactor - Mathf.Floor(mFactor)); mAmountPerDelta = -mAmountPerDelta; } else if (mFactor < 0f) { mFactor = -mFactor; mFactor -= Mathf.Floor(mFactor); mAmountPerDelta = -mAmountPerDelta; } } // If the factor goes out of range and this is a one-time tweening operation, disable the script if ((style == Style.Once) && (duration == 0f || mFactor > 1f || mFactor < 0f)) { mFactor = Mathf.Clamp01(mFactor); Sample(mFactor, true); enabled = false; if (current != this) { UITweener before = current; current = this; if (onFinished != null) { mTemp = onFinished; onFinished = new List <EventDelegate>(); // Notify the listener delegates EventDelegate.Execute(mTemp); // Re-add the previous persistent delegates for (int i = 0; i < mTemp.Count; ++i) { EventDelegate ed = mTemp[i]; if (ed != null && !ed.oneShot) { EventDelegate.Add(onFinished, ed, ed.oneShot); } } mTemp = null; } // Deprecated legacy functionality support if (eventReceiver != null && !string.IsNullOrEmpty(callWhenFinished)) { eventReceiver.SendMessage(callWhenFinished, this, SendMessageOptions.DontRequireReceiver); } current = before; } } else { Sample(mFactor, false); } }