Added original SDK code for Alien Swarm.

game/shared/sequence_Transitioner.h

@@ -0,0 +1,49 @@
+//========= Copyright <20> 1996-2005, Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+//=============================================================================//
+
+#ifndef SEQUENCE_TRANSITIONER_H
+#define SEQUENCE_TRANSITIONER_H
+#ifdef _WIN32
+#pragma once
+#endif
+
+class CStudioHdr;
+
+// ------------------------------------------------------------------------------------------------ //
+// CSequenceTransitioner declaration.
+// ------------------------------------------------------------------------------------------------ //
+class CSequenceTransitioner
+{
+public:
+	void CheckForSequenceChange( 
+		// Describe the current animation state with these parameters.
+		CStudioHdr *hdr,
+		int nCurSequence, 
+
+		// Even if the sequence hasn't changed, you can force it to interpolate from the previous
+		// spot in the same sequence to the current spot in the same sequence by setting this to true.
+		bool bForceNewSequence,
+
+		// Follows EF_NOINTERP.
+		bool bInterpolate
+		);
+
+	void UpdateCurrent( 
+		// Describe the current animation state with these parameters.
+		CStudioHdr *hdr,
+		int nCurSequence, 
+		float flCurCycle,
+		float flCurPlaybackRate,
+		float flCurTime
+		);
+
+	void RemoveAll( void ) { m_animationQueue.RemoveAll(); };
+
+public:
+	CUtlVector< CAnimationLayer >	m_animationQueue;
+};
+
+#endif // SEQUENCE_TRANSITIONER_H