Initial Prey Game integration support.

neo/prey/game/physics/Force_Spring.h

@@ -0,0 +1,55 @@
+// Copyright (C) 2004 Id Software, Inc.
+//
+
+#ifndef __FORCE_SPRING_H__
+#define __FORCE_SPRING_H__
+
+/*
+===============================================================================
+
+	Spring force
+
+===============================================================================
+*/
+
+class idForce_Spring : public idForce {
+
+public:
+	CLASS_PROTOTYPE( idForce_Spring );
+
+						idForce_Spring( void );
+	virtual				~idForce_Spring( void );
+						// initialize the spring
+	void				InitSpring( float Kstretch, float Kcompress, float damping, float restLength );
+						// set the entities and positions on these entities the spring is attached to
+	void				SetPosition(	idEntity *physics1, int id1, const idVec3 &p1,
+										idEntity *physics2, int id2, const idVec3 &p2 ); // HUMANHEAD mdl:  Changed to taking entities instead of their physics objects
+
+	// HUMANHEAD mdl:  Added Save/Restore
+	void				Save( idSaveGame *savefile ) const;
+	void				Restore( idRestoreGame *savefile );
+	// HUMANHEAD END
+
+public: // common force interface
+	virtual void		Evaluate( int time );
+	virtual void		RemovePhysics( const idEntity *phys ); // HUMANHEAD mdl:  Changed to take entity instead of its physics object
+
+private:
+
+	// spring properties
+	float				Kstretch;
+	float				Kcompress;
+	float				damping;
+	float				restLength;
+
+	// positioning
+	idEntityPtr< idEntity > physics1;	// first physics object // HUMANHEAD mdl:  Changed to entity
+	int					id1;		// clip model id of first physics object
+	idVec3				p1;			// position on clip model
+	idEntityPtr< idEntity > physics2;	// second physics object // HUMANHEAD mdl:  Changed to entity
+	int					id2;		// clip model id of second physics object
+	idVec3				p2;			// position on clip model
+
+};
+
+#endif /* !__FORCE_SPRING_H__ */