Added GTWeen

GTweensGodot/GTweens/Source/Contexts/GTweensContext.cs

@@ -0,0 +1,114 @@
+using System.Collections.Generic;
+using System.Diagnostics;
+using GTweens.Tweens;
+
+namespace GTweens.Contexts
+{
+    /// <summary>
+    /// Manages and updates a collection of GTweens.
+    /// </summary>
+    public sealed class GTweensContext 
+    {
+        /// <summary>
+        /// Gets or sets the time scale at which the tweens should play.
+        /// </summary>
+        public float TimeScale { get; set; } = 1f;
+        
+        /// <summary>
+        /// Gets the duration of the last tweens tick in milliseconds.
+        /// </summary>
+        public float TickDurationMs { get; private set; } 
+        
+        readonly List<GTween> _aliveTweens = new();
+        readonly List<GTween> _tweensToAdd = new();
+        readonly List<GTween> _tweensToRemove = new();
+
+        readonly Stopwatch _updateStopwatch = new();
+        
+        /// <summary>
+        /// Plays a GTween within the context.
+        /// </summary>
+        /// <param name="gTween">The GTween to play.</param>
+        public void Play(GTween gTween)
+        {
+            if(gTween.IsNested)
+            {
+                return;
+            }
+
+            if(gTween.IsAlive)
+            {
+                TryStartTween(gTween);
+                return;
+            }
+
+            gTween.IsAlive = true;
+
+            _tweensToAdd.Add(gTween);
+
+            TryStartTween(gTween);
+        }
+        
+        /// <summary>
+        /// Updates the context and all managed tweens.
+        /// </summary>
+        /// <param name="deltaTime">The elapsed time since the last update in seconds.</param>
+        public void Tick(float deltaTime)
+        {
+            float scaledDeltaTime = deltaTime * TimeScale;
+            
+            _updateStopwatch.Restart();
+
+            foreach(GTween tween in _tweensToAdd)
+            {
+                _aliveTweens.Add(tween);
+            }
+
+            _tweensToAdd.Clear();
+
+            foreach (GTween tween in _aliveTweens)
+            {
+                if(tween.IsPlaying)
+                {
+                    tween.Tick(scaledDeltaTime);
+                }
+                else
+                {
+                    _tweensToRemove.Add(tween);
+                }
+            }
+
+            foreach(GTween tween in _tweensToRemove)
+            {
+                tween.IsAlive = false;
+
+                _aliveTweens.Remove(tween);
+                _tweensToAdd.Remove(tween);
+            }
+
+            _tweensToRemove.Clear();
+
+            _updateStopwatch.Stop();
+
+            TickDurationMs = _updateStopwatch.ElapsedMilliseconds;
+        }
+        
+        /// <summary>
+        /// Clears all tweens from the context.
+        /// </summary>
+        public void Clear()
+        {
+            _aliveTweens.Clear();
+            _tweensToAdd.Clear();
+            _tweensToRemove.Clear();
+        }
+
+        void TryStartTween(GTween gTween)
+        {
+            if (!gTween.IsPlaying)
+            {
+                gTween.Start();
+            }
+        }
+    }
+}

GTweensGodot/GTweens/Source/Contexts/GTweensContext.cs.uid

@@ -0,0 +1 @@
+uid://cc0xhrqaeyj2a