1 files changed, 49 insertions, 0 deletions
diff --git a/game/client/simple_keys.h b/game/client/simple_keys.h
new file mode 100644
index 0000000..1f3f0cd
--- /dev/null
+++ b/game/client/simple_keys.h
@@ -0,0 +1,49 @@
+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+//=============================================================================//
+
+#ifndef SIMPLE_KEYS_H
+#define SIMPLE_KEYS_H
+#ifdef _WIN32
+#pragma once
+#endif
+
+enum simplekeyinterp_t
+{
+	KEY_LINEAR = 0,
+	KEY_SPLINE,
+	KEY_ACCELERATE,
+	KEY_DECELERATE,
+};
+
+class CSimpleKeyInterp : public Vector
+{
+public:
+	CSimpleKeyInterp( float t, simplekeyinterp_t interp, float x, float y = 0, float z = 0 ) : Vector( x, y, z ) 
+	{
+		m_interp = interp;
+		m_keyTime = t;
+	}
+	
+	float GetTime() const { return m_keyTime; }
+	
+	// out = t*start + (1-t) * end (may be splinear or linear)
+	static void Interp( Vector &out, float t, const CSimpleKeyInterp &start, const CSimpleKeyInterp &end );
+
+	float				m_keyTime;
+	simplekeyinterp_t	m_interp;
+};
+
+
+class CSimpleKeyList
+{
+public:
+	int		Insert( const CSimpleKeyInterp &key );
+	bool	Interp( Vector &out, float t );
+
+	CUtlVector<CSimpleKeyInterp>	m_list;
+};
+
+#endif // SIMPLE_KEYS_H