From eac42ae50ae2fbc7e83a030728028df87178505f Mon Sep 17 00:00:00 2001
From: NathanSweet <nathan.sweet@gmail.com>
Date: Sun, 14 Jul 2019 13:33:20 +0200
Subject: [PATCH] [libgdx] Disallow creating a timeline with 0 frames.

---
 .../spine-libgdx/src/com/esotericsoftware/spine/Animation.java | 3 +++
 1 file changed, 3 insertions(+)

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 283fd5908..553d1566e 100644
--- a/spine-libgdx/spine-libgdx/src/com/esotericsoftware/spine/Animation.java
+++ b/spine-libgdx/spine-libgdx/src/com/esotericsoftware/spine/Animation.java
@@ -883,6 +883,7 @@ public class Animation {
 		final String[] attachmentNames;
 
 		public AttachmentTimeline (int frameCount) {
+			if (frameCount <= 0) throw new IllegalArgumentException("frameCount must be > 0: " + frameCount);
 			frames = new float[frameCount];
 			attachmentNames = new String[frameCount];
 		}
@@ -1197,6 +1198,7 @@ public class Animation {
 		private final Event[] events;
 
 		public EventTimeline (int frameCount) {
+			if (frameCount <= 0) throw new IllegalArgumentException("frameCount must be > 0: " + frameCount);
 			frames = new float[frameCount];
 			events = new Event[frameCount];
 		}
@@ -1263,6 +1265,7 @@ public class Animation {
 		private final int[][] drawOrders;
 
 		public DrawOrderTimeline (int frameCount) {
+			if (frameCount <= 0) throw new IllegalArgumentException("frameCount must be > 0: " + frameCount);
 			frames = new float[frameCount];
 			drawOrders = new int[frameCount][];
 		}