From a5b67629c898787a923fd88b0c6e0b4324df1556 Mon Sep 17 00:00:00 2001
From: Nathan Sweet <nathan.sweet@gmail.com>
Date: Wed, 26 Jan 2022 09:39:15 -0400
Subject: [PATCH] [libgdx] Fixed additive scaling mixing.

Fixes:
http://esotericsoftware.com/forum/Mixing-two-animations-on-additive-track-problem-16953

Problem was introduced by f4021177f9bc71af93509763232b2401589f7acf which tried to fix:
http://esotericsoftware.com/forum/About-negative-bone-scale-Web-Player-16410
---
 .../src/com/esotericsoftware/spine/Animation.java         | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/spine-libgdx/spine-libgdx/src/com/esotericsoftware/spine/Animation.java b/spine-libgdx/spine-libgdx/src/com/esotericsoftware/spine/Animation.java
index d14a138238..3079b3f67d 100644
--- a/spine-libgdx/spine-libgdx/src/com/esotericsoftware/spine/Animation.java
+++ b/spine-libgdx/spine-libgdx/src/com/esotericsoftware/spine/Animation.java
@@ -739,8 +739,8 @@ public void apply (Skeleton skeleton, float lastTime, float time, @Null Array<Ev
 						bone.scaleY = by + (Math.abs(y) * Math.signum(by) - by) * alpha;
 						break;
 					case add:
-						bone.scaleX = (x - bone.data.scaleX) * alpha;
-						bone.scaleY = (y - bone.data.scaleY) * alpha;
+						bone.scaleX += (x - bone.data.scaleX) * alpha;
+						bone.scaleY += (y - bone.data.scaleY) * alpha;
 					}
 				} else {
 					switch (blend) {
@@ -818,7 +818,7 @@ public void apply (Skeleton skeleton, float lastTime, float time, @Null Array<Ev
 						bone.scaleX = bx + (Math.abs(x) * Math.signum(bx) - bx) * alpha;
 						break;
 					case add:
-						bone.scaleX = (x - bone.data.scaleX) * alpha;
+						bone.scaleX += (x - bone.data.scaleX) * alpha;
 					}
 				} else {
 					switch (blend) {
@@ -891,7 +891,7 @@ public void apply (Skeleton skeleton, float lastTime, float time, @Null Array<Ev
 						bone.scaleY = by + (Math.abs(y) * Math.signum(by) - by) * alpha;
 						break;
 					case add:
-						bone.scaleY = (y - bone.data.scaleY) * alpha;
+						bone.scaleY += (y - bone.data.scaleY) * alpha;
 					}
 				} else {
 					switch (blend) {