Initial Prey Game integration support.

neo/prey/Prey/prey_projectiletracking.h

@@ -0,0 +1,48 @@
+#ifndef __HH_PROJECTILE_TRACKING_H
+#define __HH_PROJECTILE_TRACKING_H
+
+/***********************************************************************
+
+  hhProjectileTracking
+	
+***********************************************************************/
+class hhProjectileTracking: public hhProjectile {
+	CLASS_PROTOTYPE( hhProjectileTracking );
+
+	public:
+		hhProjectileTracking();
+		void			Spawn();
+		virtual void	Launch( const idVec3 &start, const idMat3 &axis, const idVec3 &pushVelocity, const float timeSinceFire = 0.0f, const float launchPower = 1.0f, const float dmgPower = 1.0f );
+		virtual void	Explode( const trace_t *collision, const idVec3& velocity, int removeDelay );
+
+		void			Save( idSaveGame *savefile ) const;
+		void			Restore( idRestoreGame *savefile );
+		void			StartTracking();
+		void			SetEnemy( idEntity* newEnemy ) { enemy = newEnemy; }
+	protected:
+		virtual idEntity* DetermineEnemy();
+		bool			EnemyIsValid( idEntity* actor ) const;
+		idEntity*		WhosClosest( idEntity* possibleEnemy, idEntity* currentEnemy, float& currentEnemyDot, float& currentEnemyDist ) const;
+		idVec3			DetermineEnemyPosition( const idEntity* enemy ) const;
+		idVec3			DetermineEnemyDir( const idEntity* enemy ) const;
+		bool			GetPhysicsToVisualTransform( idVec3 &origin, idMat3 &axis );
+	protected:
+		void			Event_Hover();
+		virtual void	Event_TrackTarget();
+		void			Event_StartTracking();
+		void			Event_StopTracking();
+
+	protected:
+		float			turnFactor;
+		int				updateRate;
+
+		idEntityPtr<idEntity> enemy;
+		idAngles		angularVelocity;
+		idVec3			velocity;
+		float			cachedFovCos;
+		float			spinAngle;
+		float			turnFactorAcc;
+		float			spinDelta;
+};
+
+#endif