AnimationState, don't mix from an animation that was never applied.

spine-libgdx/spine-libgdx-tests/src/com/esotericsoftware/spine/AnimationStateTest.java

@@ -501,6 +501,24 @@ public class AnimationStateTest {
 			}
 		});
 
+		setup("setAnimation twice", // 21
+			expect(0, "start", 0, 0), //
+
+			expect(1, "start", 0, 0), //
+
+			expect(0, "interrupt", 0, 0), //
+			expect(0, "end", 0, 0), //
+
+			expect(1, "event 0", 0, 0), //
+			expect(1, "event 14", 0.5f, 0.5f), //
+			expect(1, "event 30", 1, 1), //
+			expect(1, "complete", 1, 1), //
+			expect(1, "end", 1, 1.1f) //
+		);
+		state.setAnimation(0, "events1", false); // First should be ignored.
+		state.setAnimation(0, "events2", false);
+		run(0.1f, 1000, null);
+
 		System.out.println("AnimationState tests passed.");
 	}
 

spine-libgdx/spine-libgdx/src/com/esotericsoftware/spine/AnimationState.java

@@ -265,8 +265,12 @@ public class AnimationState {
 		TrackEntry entry = trackEntry(trackIndex, animation, loop, current);
 		if (current != null) {
 			freeAll(current.next);
-			current.next = entry;
-			entry.delay = current.trackLast;
+			if (current.trackLast == -1) // If current was never applied, don't mix from it, just replace it.
+				setCurrent(trackIndex, entry);
+			else {
+				current.next = entry;
+				entry.delay = current.trackLast;
+			}
 		} else
 			setCurrent(trackIndex, entry);
 		return entry;