From b7a7870e34ac3dd013ddcd6ed8eda0b92d2f6bd5 Mon Sep 17 00:00:00 2001
From: Mario Zechner <badlogicgames@gmail.com>
Date: Thu, 10 Nov 2022 11:49:36 +0100
Subject: [PATCH] [cocos2d-objc] Ensure skeleton/state are updated once before
 rendering the first frame.

---
 spine-cocos2d-objc/src/spine/SkeletonAnimation.h | 1 +
 spine-cocos2d-objc/src/spine/SkeletonAnimation.m | 7 +++++++
 2 files changed, 8 insertions(+)

diff --git a/spine-cocos2d-objc/src/spine/SkeletonAnimation.h b/spine-cocos2d-objc/src/spine/SkeletonAnimation.h
index c313ecf69..0f26f3e50 100644
--- a/spine-cocos2d-objc/src/spine/SkeletonAnimation.h
+++ b/spine-cocos2d-objc/src/spine/SkeletonAnimation.h
@@ -54,6 +54,7 @@ typedef void(^spUpdateWorldTransformsListener)(SkeletonAnimation* node);
 	spDisposeListener _disposeListener;
 	spCompleteListener _completeListener;
 	spEventListener _eventListener;
+    bool _updatedOnce;
 }
 
 + (id) skeletonWithData:(spSkeletonData*)skeletonData ownsSkeletonData:(bool)ownsSkeletonData;
diff --git a/spine-cocos2d-objc/src/spine/SkeletonAnimation.m b/spine-cocos2d-objc/src/spine/SkeletonAnimation.m
index 1b000ca59..4fc632abb 100644
--- a/spine-cocos2d-objc/src/spine/SkeletonAnimation.m
+++ b/spine-cocos2d-objc/src/spine/SkeletonAnimation.m
@@ -104,6 +104,7 @@ static _TrackEntryListeners* getListeners (spTrackEntry* entry) {
 	_state->listener = animationCallback;
 
 	_spAnimationState* stateInternal = (_spAnimationState*)_state;
+    _updatedOnce = false;
 }
 
 - (id) initWithData:(spSkeletonData*)skeletonData ownsSkeletonData:(bool)ownsSkeletonData {
@@ -157,6 +158,7 @@ static _TrackEntryListeners* getListeners (spTrackEntry* entry) {
 	if (_preUpdateWorldTransformsListener) _preUpdateWorldTransformsListener(self);
 	spSkeleton_updateWorldTransform(_skeleton);
 	if (_postUpdateWorldTransformsListener) _postUpdateWorldTransformsListener(self);
+    _updatedOnce = true;
 }
 
 - (void) setAnimationStateData:(spAnimationStateData*)stateData {
@@ -277,4 +279,9 @@ static _TrackEntryListeners* getListeners (spTrackEntry* entry) {
 	getListeners(entry)->eventListener = [listener copy];
 }
 
+-(void)draw:(CCRenderer *)renderer transform:(const GLKMatrix4 *)transform {
+    if (!_updatedOnce) [self update:0];    
+    [super draw:renderer transform:transform];
+}
+
 @end