Initial Prey Game integration support.

neo/prey/game/physics/Force_Field.h

@@ -0,0 +1,69 @@
+// Copyright (C) 2004 Id Software, Inc.
+//
+
+#ifndef __FORCE_FIELD_H__
+#define __FORCE_FIELD_H__
+
+/*
+===============================================================================
+
+	Force field
+
+===============================================================================
+*/
+
+enum forceFieldType {
+	FORCEFIELD_UNIFORM,
+	FORCEFIELD_EXPLOSION,
+	FORCEFIELD_IMPLOSION
+};
+
+enum forceFieldApplyType {
+	FORCEFIELD_APPLY_FORCE,
+	FORCEFIELD_APPLY_VELOCITY,
+	FORCEFIELD_APPLY_IMPULSE
+};
+
+class idForce_Field : public idForce {
+
+public:
+	CLASS_PROTOTYPE( idForce_Field );
+
+	void				Save( idSaveGame *savefile ) const;
+	void				Restore( idRestoreGame *savefile );
+
+						idForce_Field( void );
+	virtual				~idForce_Field( void );
+						// uniform constant force
+	void				Uniform( const idVec3 &force );
+						// explosion from clip model origin
+	void				Explosion( float force );
+						// implosion towards clip model origin
+	void				Implosion( float force );
+						// add random torque
+	void				RandomTorque( float force );
+						// should the force field apply a force, velocity or impulse
+	void				SetApplyType( const forceFieldApplyType type ) { applyType = type; }
+						// make the force field only push players
+	void				SetPlayerOnly( bool set ) { playerOnly = set; }
+						// make the force field only push monsters
+	void				SetMonsterOnly( bool set ) { monsterOnly = set; }
+						// clip model describing the extents of the force field
+	void				SetClipModel( idClipModel *clipModel );
+
+public: // common force interface
+	virtual void		Evaluate( int time );
+
+private:
+	// force properties
+	forceFieldType		type;
+	forceFieldApplyType	applyType;
+	float				magnitude;
+	idVec3				dir;
+	float				randomTorque;
+	bool				playerOnly;
+	bool				monsterOnly;
+	idClipModel *		clipModel;
+};
+
+#endif /* !__FORCE_FIELD_H__ */