Add a component that allows playing the skeleton even in Edit Mode in Unity.

spine-unity/Assets/Spine/Runtime/spine-unity/Components/EditorSkeletonPlayer.cs

@@ -0,0 +1,168 @@
+/******************************************************************************
+ * Spine Runtimes License Agreement
+ * Last updated July 28, 2023. Replaces all prior versions.
+ *
+ * Copyright (c) 2013-2023, Esoteric Software LLC
+ *
+ * Integration of the Spine Runtimes into software or otherwise creating
+ * derivative works of the Spine Runtimes is permitted under the terms and
+ * conditions of Section 2 of the Spine Editor License Agreement:
+ * http://esotericsoftware.com/spine-editor-license
+ *
+ * Otherwise, it is permitted to integrate the Spine Runtimes into software or
+ * otherwise create derivative works of the Spine Runtimes (collectively,
+ * "Products"), provided that each user of the Products must obtain their own
+ * Spine Editor license and redistribution of the Products in any form must
+ * include this license and copyright notice.
+ *
+ * THE SPINE RUNTIMES ARE PROVIDED BY ESOTERIC SOFTWARE LLC "AS IS" AND ANY
+ * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
+ * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
+ * DISCLAIMED. IN NO EVENT SHALL ESOTERIC SOFTWARE LLC BE LIABLE FOR ANY
+ * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
+ * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES,
+ * BUSINESS INTERRUPTION, OR LOSS OF USE, DATA, OR PROFITS) HOWEVER CAUSED AND
+ * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THE
+ * SPINE RUNTIMES, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *****************************************************************************/
+
+#if UNITY_EDITOR
+using Spine;
+using Spine.Unity;
+using UnityEditor;
+using UnityEditor.Callbacks;
+using UnityEngine;
+
+namespace Spine.Unity {
+    [ExecuteInEditMode]
+    [AddComponentMenu("Spine/EditorSkeletonPlayer")]
+    [RequireComponent(typeof(ISkeletonAnimation))]
+    public class EditorSkeletonPlayer : MonoBehaviour {
+        private IEditorSkeletonWrapper skeletonWrapper;
+        private TrackEntry trackEntry;
+        private string oldAnimationName;
+        private bool oldLoop;
+        private double oldTime;
+
+        [DidReloadScripts]
+        private static void OnReloaded() {
+            // Force start when scripts are reloaded
+            EditorSkeletonPlayer[] editorSpineAnimations = FindObjectsOfType<EditorSkeletonPlayer>();
+
+            foreach (EditorSkeletonPlayer editorSpineAnimation in editorSpineAnimations) 
+                editorSpineAnimation.Start();
+        }
+
+        private void Start() {
+            if (Application.isPlaying) return;
+
+            if (skeletonWrapper == null) {
+                if (TryGetComponent(out SkeletonAnimation skeletonAnimation))
+                    skeletonWrapper = new SkeletonAnimationWrapper(skeletonAnimation);
+                else if (TryGetComponent(out SkeletonGraphic skeletonGraphic))
+                    skeletonWrapper = new SkeletonGraphicWrapper(skeletonGraphic);
+            }
+
+            oldTime = EditorApplication.timeSinceStartup;
+            EditorApplication.update += EditorUpdate;
+        }
+
+        private void OnDestroy() {
+            EditorApplication.update -= EditorUpdate;
+        }
+
+        private void EditorUpdate() {
+            if (enabled == false || Application.isPlaying) return;
+            if (skeletonWrapper == null) return;
+            if (skeletonWrapper.State == null) return;
+
+            // Update animation
+            if (oldAnimationName != skeletonWrapper.AnimationName || oldLoop != skeletonWrapper.Loop) {
+                trackEntry = skeletonWrapper.State.SetAnimation(0, skeletonWrapper.AnimationName, skeletonWrapper.Loop);
+                oldAnimationName = skeletonWrapper.AnimationName;
+                oldLoop = skeletonWrapper.Loop;
+            }
+
+            // Update speed
+            if (trackEntry != null) 
+                trackEntry.TimeScale = skeletonWrapper.Speed;
+
+            float deltaTime = (float)(EditorApplication.timeSinceStartup - oldTime);
+            skeletonWrapper.Update(deltaTime);
+            oldTime = EditorApplication.timeSinceStartup;
+
+            // Force repaint to update animation smoothly
+            EditorApplication.QueuePlayerLoopUpdate();
+        }
+
+        private class SkeletonAnimationWrapper : IEditorSkeletonWrapper {
+            private SkeletonAnimation _skeletonAnimation;
+
+            public SkeletonAnimationWrapper(SkeletonAnimation skeletonAnimation) {
+                _skeletonAnimation = skeletonAnimation;
+            }
+
+            public string AnimationName {
+                get { return _skeletonAnimation.AnimationName; }
+            }
+
+            public bool Loop {
+                get { return _skeletonAnimation.loop; }
+            }
+
+            public float Speed {
+                get { return _skeletonAnimation.timeScale; }
+            }
+
+            public Spine.AnimationState State {
+                get { return _skeletonAnimation.state; }
+            }
+
+            public void Update(float deltaTime) {
+                _skeletonAnimation.Update(deltaTime);
+            }
+        }
+
+        private class SkeletonGraphicWrapper : IEditorSkeletonWrapper {
+            private SkeletonGraphic _skeletonGraphic;
+
+            public SkeletonGraphicWrapper(SkeletonGraphic skeletonGraphic) {
+                _skeletonGraphic = skeletonGraphic;
+            }
+
+            public string AnimationName {
+                get { return _skeletonGraphic.startingAnimation; }
+            }
+
+            public bool Loop {
+                get { return _skeletonGraphic.startingLoop; }
+            }
+
+            public float Speed {
+                get { return _skeletonGraphic.timeScale; }
+            }
+
+            public Spine.AnimationState State {
+                get { return _skeletonGraphic.AnimationState; }
+            }
+
+            public void Update(float deltaTime) {
+                _skeletonGraphic.Update(deltaTime);
+            }
+        }
+
+        private interface IEditorSkeletonWrapper {
+            string AnimationName { get; }
+
+            bool Loop { get; }
+
+            float Speed { get; }
+
+            Spine.AnimationState State { get; }
+
+            void Update(float deltaTime);
+        }
+    }
+}
+#endif

spine-unity/Assets/Spine/Runtime/spine-unity/Components/EditorSkeletonPlayer.cs.meta

@@ -0,0 +1,11 @@
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