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316 lines
16 KiB
C#
316 lines
16 KiB
C#
// Author: Daniele Giardini - http://www.demigiant.com
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// Created: 2014/07/15 17:50
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//
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// License Copyright (c) Daniele Giardini.
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// This work is subject to the terms at http://dotween.demigiant.com/license.php
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using System;
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using System.Collections.Generic;
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using DG.Tweening.Core;
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using DG.Tweening.Core.Easing;
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using DG.Tweening.Core.Enums;
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using UnityEngine;
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namespace DG.Tweening
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{
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/// <summary>
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/// Controls other tweens as a group
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/// </summary>
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public sealed class Sequence : Tween
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{
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// SETUP DATA ////////////////////////////////////////////////
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internal readonly List<Tween> sequencedTweens = new List<Tween>(); // Only Tweens (used for despawning and validation)
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readonly List<ABSSequentiable> _sequencedObjs = new List<ABSSequentiable>(); // Tweens plus SequenceCallbacks
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internal float lastTweenInsertTime; // Used to insert a tween at the position of the previous one
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#region Constructor
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internal Sequence()
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{
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tweenType = TweenType.Sequence;
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Reset();
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}
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#endregion
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#region Creation Methods
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internal static Sequence DoPrepend(Sequence inSequence, Tween t)
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{
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if (t.loops == -1) t.loops = 1;
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float tFullTime = t.delay + (t.duration * t.loops);
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inSequence.duration += tFullTime;
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int len = inSequence._sequencedObjs.Count;
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for (int i = 0; i < len; ++i) {
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ABSSequentiable sequentiable = inSequence._sequencedObjs[i];
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sequentiable.sequencedPosition += tFullTime;
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sequentiable.sequencedEndPosition += tFullTime;
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}
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return DoInsert(inSequence, t, 0);
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}
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internal static Sequence DoInsert(Sequence inSequence, Tween t, float atPosition)
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{
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TweenManager.AddActiveTweenToSequence(t);
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// If t has a delay add it as an interval
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atPosition += t.delay;
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inSequence.lastTweenInsertTime = atPosition;
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t.isSequenced = t.creationLocked = true;
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t.sequenceParent = inSequence;
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if (t.loops == -1) t.loops = 1;
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float tFullTime = t.duration * t.loops;
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t.autoKill = false;
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t.delay = t.elapsedDelay = 0;
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t.delayComplete = true;
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t.isSpeedBased = false;
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t.sequencedPosition = atPosition;
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t.sequencedEndPosition = atPosition + tFullTime;
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if (t.sequencedEndPosition > inSequence.duration) inSequence.duration = t.sequencedEndPosition;
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inSequence._sequencedObjs.Add(t);
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inSequence.sequencedTweens.Add(t);
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return inSequence;
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}
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internal static Sequence DoAppendInterval(Sequence inSequence, float interval)
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{
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inSequence.duration += interval;
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return inSequence;
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}
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internal static Sequence DoPrependInterval(Sequence inSequence, float interval)
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{
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inSequence.duration += interval;
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int len = inSequence._sequencedObjs.Count;
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for (int i = 0; i < len; ++i) {
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ABSSequentiable sequentiable = inSequence._sequencedObjs[i];
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sequentiable.sequencedPosition += interval;
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sequentiable.sequencedEndPosition += interval;
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}
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return inSequence;
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}
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internal static Sequence DoInsertCallback(Sequence inSequence, TweenCallback callback, float atPosition)
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{
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SequenceCallback c = new SequenceCallback(atPosition, callback);
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c.sequencedPosition = c.sequencedEndPosition = atPosition;
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inSequence._sequencedObjs.Add(c);
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if (inSequence.duration < atPosition) inSequence.duration = atPosition;
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return inSequence;
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}
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#endregion
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internal override void Reset()
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{
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base.Reset();
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sequencedTweens.Clear();
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_sequencedObjs.Clear();
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lastTweenInsertTime = 0;
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}
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// Called by TweenManager.Validate.
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// Returns TRUE if the tween is valid
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internal override bool Validate()
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{
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int len = sequencedTweens.Count;
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for (int i = 0; i < len; i++) {
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if (!sequencedTweens[i].Validate()) return false;
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}
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return true;
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}
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// CALLED BY Tween the moment the tween starts.
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// Returns TRUE in case of success
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internal override bool Startup()
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{
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return DoStartup(this);
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}
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internal override bool ApplyTween(float prevPosition, int prevCompletedLoops, int newCompletedSteps, bool useInversePosition, UpdateMode updateMode)
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{
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return DoApplyTween(this, prevPosition, prevCompletedLoops, newCompletedSteps, useInversePosition, updateMode);
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}
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// Called by DOTween when spawning/creating a new Sequence.
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internal static void Setup(Sequence s)
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{
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s.autoKill = DOTween.defaultAutoKill;
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s.isRecyclable = DOTween.defaultRecyclable;
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s.isPlaying = DOTween.defaultAutoPlay == AutoPlay.All || DOTween.defaultAutoPlay == AutoPlay.AutoPlaySequences;
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s.loopType = DOTween.defaultLoopType;
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s.easeType = Ease.Linear;
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s.easeOvershootOrAmplitude = DOTween.defaultEaseOvershootOrAmplitude;
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s.easePeriod = DOTween.defaultEasePeriod;
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}
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// Returns TRUE in case of success
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internal static bool DoStartup(Sequence s)
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{
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if (s.sequencedTweens.Count == 0 && s._sequencedObjs.Count == 0
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&& s.onComplete == null && s.onKill == null && s.onPause == null && s.onPlay == null && s.onRewind == null
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&& s.onStart == null && s.onStepComplete == null && s.onUpdate == null
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) return false; // Empty Sequence without any callback set
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s.startupDone = true;
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s.fullDuration = s.loops > -1 ? s.duration * s.loops : Mathf.Infinity;
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// Order sequencedObjs by start position
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s._sequencedObjs.Sort(SortSequencedObjs);
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return true;
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}
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// Applies the tween set by DoGoto.
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// Returns TRUE if the tween needs to be killed
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internal static bool DoApplyTween(Sequence s, float prevPosition, int prevCompletedLoops, int newCompletedSteps, bool useInversePosition, UpdateMode updateMode)
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{
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// Adapt to eventual ease position
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float prevPos = prevPosition;
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float newPos = s.position;
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if (s.easeType != Ease.Linear) {
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prevPos = s.duration * EaseManager.Evaluate(s.easeType, s.customEase, prevPos, s.duration, s.easeOvershootOrAmplitude, s.easePeriod);
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newPos = s.duration * EaseManager.Evaluate(s.easeType, s.customEase, newPos, s.duration, s.easeOvershootOrAmplitude, s.easePeriod);
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}
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float from, to = 0;
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// Determine if prevPos was inverse.
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// Used to calculate correct "from" value when applying internal cycle
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// and also in case of multiple loops within a single update
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bool prevPosIsInverse = s.loopType == LoopType.Yoyo
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&& (prevPos < s.duration ? prevCompletedLoops % 2 != 0 : prevCompletedLoops % 2 == 0);
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if (s.isBackwards) prevPosIsInverse = !prevPosIsInverse;
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// Update multiple loop cycles within the same update
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if (newCompletedSteps > 0) {
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// Store expected completedLoops and position, in order to check them after the update cycles.
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int expectedCompletedLoops = s.completedLoops + newCompletedSteps;
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float expectedPosition = s.position;
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//
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int cycles = newCompletedSteps;
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int cyclesDone = 0;
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from = prevPos;
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if (updateMode == UpdateMode.Update) {
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// Run all cycles elapsed since last update
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while (cyclesDone < cycles) {
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if (cyclesDone > 0) from = to;
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else if (prevPosIsInverse && !s.isBackwards) from = s.duration - from;
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to = prevPosIsInverse ? 0 : s.duration;
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if (ApplyInternalCycle(s, from, to, updateMode, useInversePosition, prevPosIsInverse, true)) return true;
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cyclesDone++;
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if (s.loopType == LoopType.Yoyo) prevPosIsInverse = !prevPosIsInverse;
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}
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// If completedLoops or position were changed by some callback, exit here
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if (expectedCompletedLoops != s.completedLoops || Math.Abs(expectedPosition - s.position) > Single.Epsilon) return !s.active;
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} else {
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// Simply determine correct prevPosition after steps
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if (s.loopType == LoopType.Yoyo && newCompletedSteps % 2 != 0) {
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prevPosIsInverse = !prevPosIsInverse;
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prevPos = s.duration - prevPos;
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}
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newCompletedSteps = 0;
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}
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}
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// Run current cycle
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if (newCompletedSteps == 1 && s.isComplete) return false; // Skip update if complete because multicycle took care of it
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if (newCompletedSteps > 0 && !s.isComplete) {
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from = useInversePosition ? s.duration : 0;
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// In case of Restart loop rewind all tweens (keep "to > 0" or remove it?)
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if (s.loopType == LoopType.Restart && to > 0) ApplyInternalCycle(s, s.duration, 0, UpdateMode.Goto, false, false, false);
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} else from = useInversePosition ? s.duration - prevPos : prevPos;
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return ApplyInternalCycle(s, from, useInversePosition ? s.duration - newPos : newPos, updateMode, useInversePosition, prevPosIsInverse);
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}
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// ===================================================================================
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// METHODS ---------------------------------------------------------------------------
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// Returns TRUE if the tween needs to be killed
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static bool ApplyInternalCycle(Sequence s, float fromPos, float toPos, UpdateMode updateMode, bool useInverse, bool prevPosIsInverse, bool multiCycleStep = false)
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{
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bool isBackwardsUpdate = toPos < fromPos;
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// Debug.Log(Time.frameCount + " " + s.id + " " + (multiCycleStep ? "<color=#FFEC03>Multicycle</color> > " : "Cycle > ") + s.position + "/" + s.duration + " - s.isBackwards: " + s.isBackwards + ", useInverse/prevInverse: " + useInverse + "/" + prevPosIsInverse + " - " + fromPos + " > " + toPos + " - UpdateMode: " + updateMode + ", isPlaying: " + s.isPlaying);
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if (isBackwardsUpdate) {
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int len = s._sequencedObjs.Count - 1;
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for (int i = len; i > -1; --i) {
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if (!s.active) return true; // Killed by some internal callback
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ABSSequentiable sequentiable = s._sequencedObjs[i];
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if (sequentiable.sequencedEndPosition < toPos || sequentiable.sequencedPosition > fromPos) continue;
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if (sequentiable.tweenType == TweenType.Callback) {
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if (updateMode == UpdateMode.Update && prevPosIsInverse) {
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// Debug.Log("<color=#FFEC03>BACKWARDS Callback > " + s.id + " - s.isBackwards: " + s.isBackwards + ", useInverse/prevInverse: " + useInverse + "/" + prevPosIsInverse + " - " + fromPos + " > " + toPos + "</color>");
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OnTweenCallback(sequentiable.onStart);
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}
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} else {
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// Nested Tweener/Sequence
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float gotoPos = toPos - sequentiable.sequencedPosition;
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if (gotoPos < 0) gotoPos = 0;
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Tween t = (Tween)sequentiable;
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if (!t.startupDone) continue; // since we're going backwards and this tween never started just ignore it
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t.isBackwards = true;
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if (TweenManager.Goto(t, gotoPos, false, updateMode)) return true;
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// Fixes nested callbacks not being called correctly if main sequence has loops and nested ones don't
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if (multiCycleStep && t.tweenType == TweenType.Sequence) {
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if (s.position <= 0 && s.completedLoops == 0) t.position = 0;
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else {
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bool toZero = s.completedLoops == 0 || s.isBackwards && (s.completedLoops < s.loops || s.loops == -1);
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if (t.isBackwards) toZero = !toZero;
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if (useInverse) toZero = !toZero;
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if (s.isBackwards && !useInverse && !prevPosIsInverse) toZero = !toZero;
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t.position = toZero ? 0 : t.duration;
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}
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}
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}
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}
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} else {
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// Debug
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int len = s._sequencedObjs.Count;
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for (int i = 0; i < len; ++i) {
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if (!s.active) return true; // Killed by some internal callback
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ABSSequentiable sequentiable = s._sequencedObjs[i];
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if (sequentiable.sequencedPosition > toPos || sequentiable.sequencedEndPosition < fromPos) continue;
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if (sequentiable.tweenType == TweenType.Callback) {
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if (updateMode == UpdateMode.Update) {
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// Debug.Log("<color=#FFEC03>FORWARD Callback > " + s.id + " - s.isBackwards: " + s.isBackwards + ", useInverse/prevInverse: " + useInverse + "/" + prevPosIsInverse + " - " + fromPos + " > " + toPos + "</color>");
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bool fire = !s.isBackwards && !useInverse && !prevPosIsInverse
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|| s.isBackwards && useInverse && !prevPosIsInverse;
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if (fire) OnTweenCallback(sequentiable.onStart);
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}
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} else {
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// Nested Tweener/Sequence
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float gotoPos = toPos - sequentiable.sequencedPosition;
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if (gotoPos < 0) gotoPos = 0;
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Tween t = (Tween)sequentiable;
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t.isBackwards = false;
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if (TweenManager.Goto(t, gotoPos, false, updateMode)) return true;
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// Fixes nested callbacks not being called correctly if main sequence has loops and nested ones don't
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if (multiCycleStep && t.tweenType == TweenType.Sequence) {
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if (s.position <= 0 && s.completedLoops == 0) t.position = 0;
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else {
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bool toZero = s.completedLoops == 0 || !s.isBackwards && (s.completedLoops < s.loops || s.loops == -1);
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if (t.isBackwards) toZero = !toZero;
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if (useInverse) toZero = !toZero;
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if (s.isBackwards && !useInverse && !prevPosIsInverse) toZero = !toZero;
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t.position = toZero ? 0 : t.duration;
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}
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}
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}
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}
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}
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return false;
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}
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static int SortSequencedObjs(ABSSequentiable a, ABSSequentiable b)
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{
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if (a.sequencedPosition > b.sequencedPosition) return 1;
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if (a.sequencedPosition < b.sequencedPosition) return -1;
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return 0;
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}
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}
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} |