Quake 4 integrated with DoomRTX

neo/quake4/game/physics/Force_Spring.h

@@ -0,0 +1,51 @@
+
+#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(	idPhysics *physics1, int id1, const idVec3 &p1,
+										idPhysics *physics2, int id2, const idVec3 &p2 );
+
+	void				Save( idSaveGame *savefile ) const;
+	void				Restore( idRestoreGame *savefile );
+
+public: // common force interface
+	virtual void		Evaluate( int time );
+	virtual void		RemovePhysics( const idPhysics *phys );
+
+private:
+
+	// spring properties
+	float				Kstretch;
+	float				Kcompress;
+	float				damping;
+	float				restLength;
+
+	// positioning
+	idPhysics *			physics1;	// first physics object
+	int					id1;		// clip model id of first physics object
+	idVec3				p1;			// position on clip model
+	idPhysics *			physics2;	// second physics object
+	int					id2;		// clip model id of second physics object
+	idVec3				p2;			// position on clip model
+
+};
+
+#endif /* !__FORCE_SPRING_H__ */