1 files changed, 85 insertions, 0 deletions
diff --git a/public/jigglebones.h b/public/jigglebones.h
new file mode 100644
index 0000000..037a486
--- /dev/null
+++ b/public/jigglebones.h
@@ -0,0 +1,85 @@
+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+// $Workfile:     $
+// $NoKeywords: $
+//=============================================================================//
+#ifndef C_JIGGLEBONES_H
+#define C_JIGGLEBONES_H
+
+#ifdef _WIN32
+#pragma once
+#endif
+
+#include "studio.h"
+#include "utlvector.h"
+#include "utllinkedlist.h"
+
+//-----------------------------------------------------------------------------
+/**
+ * JiggleData is the instance-specific data for a jiggle bone
+ */
+struct JiggleData
+{
+	void Init( int initBone, float currenttime, const Vector &initBasePos, const Vector &initTipPos )
+	{
+		bone = initBone;
+
+		lastUpdate = currenttime;
+
+		basePos = initBasePos;
+		baseLastPos = basePos;
+		baseVel.Init();
+		baseAccel.Init();
+
+		tipPos = initTipPos;
+		tipVel.Init();
+		tipAccel.Init();
+
+		lastLeft = Vector( 0, 0, 0 );
+
+		lastBoingPos = initBasePos;
+		boingDir = Vector( 0.0f, 0.0f, 1.0f );
+		boingVelDir.Init();
+		boingSpeed = 0.0f;
+		boingTime = 0.0f;
+	}
+
+	int bone;
+
+	float lastUpdate;	// based on gpGlobals->realtime
+
+	Vector basePos;		// position of the base of the jiggle bone
+	Vector baseLastPos;
+	Vector baseVel;
+	Vector baseAccel;
+
+	Vector tipPos;		// position of the tip of the jiggle bone
+	Vector tipVel;
+	Vector tipAccel;
+	Vector lastLeft;		// previous up vector
+
+	Vector lastBoingPos;	// position of base of jiggle bone last update for tracking velocity
+	Vector boingDir;		// current direction along which the boing effect is occurring
+	Vector boingVelDir;		// current estimation of jiggle bone unit velocity vector for boing effect
+	float boingSpeed;		// current estimation of jiggle bone speed for boing effect
+	float boingTime;
+	
+	int useGoalMatrixCount;	// Count of times we need to fast draw using goal matrix.
+	int useJiggleBoneCount; // Count of times we need to draw using real jiggly bones.
+};
+
+class CJiggleBones
+{
+public:
+	JiggleData * GetJiggleData( int bone, float currenttime, const Vector &initBasePos, const Vector &initTipPos );
+	void BuildJiggleTransformations( int boneIndex, float currentime, const mstudiojigglebone_t *jiggleParams, const matrix3x4_t &goalMX, matrix3x4_t &boneMX );
+
+	CUtlLinkedList< JiggleData >	m_jiggleBoneState;
+};
+
+
+extern void DevMsgRT( PRINTF_FORMAT_STRING char const* pMsg, ... );
+
+#endif // C_BASEANIMATING_H