1 files changed, 294 insertions, 0 deletions
diff --git a/game/server/hl2/cbasehelicopter.h b/game/server/hl2/cbasehelicopter.h
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+++ b/game/server/hl2/cbasehelicopter.h
@@ -0,0 +1,294 @@
+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: Base class for helicopters & helicopter-type vehicles
+//
+// $NoKeywords: $
+//=============================================================================//
+
+#ifndef CBASEHELICOPTER_H
+#define CBASEHELICOPTER_H
+
+#ifdef _WIN32
+#pragma once
+#endif
+
+#include "ai_basenpc.h"
+#include "ai_trackpather.h"
+
+
+//---------------------------------------------------------
+//  Helicopter flags
+//---------------------------------------------------------
+enum HelicopterFlags_t
+{
+	BITS_HELICOPTER_GUN_ON			= 0x00000001,	// Gun is on and aiming
+	BITS_HELICOPTER_MISSILE_ON		= 0x00000002,	// Missile turrets are on and aiming
+};
+
+
+//---------------------------------------------------------
+//---------------------------------------------------------
+#define SF_NOWRECKAGE		0x08
+#define SF_NOROTORWASH		0x20
+#define SF_AWAITINPUT		0x40
+
+//---------------------------------------------------------
+//---------------------------------------------------------
+// Pathing data
+#define BASECHOPPER_LEAD_DISTANCE			800.0f
+#define	BASECHOPPER_MIN_CHASE_DIST_DIFF		128.0f	// Distance threshold used to determine when a target has moved enough to update our navigation to it
+#define BASECHOPPER_AVOID_DIST				256.0f
+
+#define BASECHOPPER_MAX_SPEED				400.0f
+#define BASECHOPPER_MAX_FIRING_SPEED		250.0f
+#define BASECHOPPER_MIN_ROCKET_DIST			1000.0f
+#define BASECHOPPER_MAX_GUN_DIST			2000.0f
+
+//---------------------------------------------------------
+// Physics rotor pushing
+#define BASECHOPPER_WASH_RADIUS			256
+#define BASECHOPPER_WASH_PUSH_MIN		30		// Initial force * their mass applied to objects in the wash
+#define BASECHOPPER_WASH_PUSH_MAX		40		// Maximum force * their mass applied to objects in the wash
+#define BASECHOPPER_WASH_RAMP_TIME		1.0		// Time it takes to ramp from the initial to the max force on an object in the wash (at the center of the wash)
+#define BASECHOPPER_WASH_MAX_MASS		300		// Don't attempt to push anything over this mass
+#define BASECHOPPER_WASH_MAX_OBJECTS	6		// Maximum number of objects the wash will push at once
+
+// Wash physics pushing
+struct washentity_t
+{
+	DECLARE_DATADESC();
+
+	EHANDLE		hEntity;
+	float		flWashStartTime;
+};
+
+#define BASECHOPPER_WASH_ALTITUDE			1024.0f
+
+//=========================================================
+//=========================================================
+
+class CBaseHelicopter : public CAI_TrackPather
+{
+public:
+	DECLARE_CLASS( CBaseHelicopter, CAI_TrackPather );
+
+	DECLARE_DATADESC();
+	DECLARE_SERVERCLASS();
+
+	CBaseHelicopter( void );
+
+	void Spawn( void );
+	void Precache( void );
+	virtual void UpdateOnRemove();
+
+	void Event_Killed( const CTakeDamageInfo &info );
+	void StopLoopingSounds();
+
+	int  BloodColor( void ) { return DONT_BLEED; }
+	void GibMonster( void );
+
+	Class_T Classify ( void ) { return CLASS_COMBINE; }
+			 
+	void CallDyingThink( void ) { DyingThink(); }
+
+	bool HasEnemy( void ) { return GetEnemy() != NULL; }
+	virtual void GatherEnemyConditions( CBaseEntity *pEnemy );
+	virtual bool ChooseEnemy( void );
+	virtual void HelicopterPostThink( void ) { };
+	virtual void FlyTouch( CBaseEntity *pOther );
+	virtual void CrashTouch( CBaseEntity *pOther );
+	virtual void HelicopterThink( void );
+	virtual void DyingThink( void );
+	virtual void NullThink( void );
+	virtual void Startup ( void );
+
+	virtual void Flight( void );
+
+	virtual void ShowDamage( void ) {};
+
+	void UpdatePlayerDopplerShift( void );
+
+	virtual void Hunt( void );
+
+	virtual bool IsCrashing( void ) { return m_lifeState != LIFE_ALIVE; }
+	virtual float GetAcceleration( void ) { return 5; }
+
+	virtual void ApplySidewaysDrag( const Vector &vecRight );
+	virtual void ApplyGeneralDrag( void );
+
+	void	TraceAttack( const CTakeDamageInfo &info, const Vector &vecDir, trace_t *ptr, CDmgAccumulator *pAccumulator );
+
+	virtual bool FireGun( void );
+
+	virtual float GetRotorVolume( void );
+	virtual void InitializeRotorSound( void );
+	virtual void UpdateRotorSoundPitch( int iPitch );
+
+	virtual void AimRocketGun(void) {};
+	virtual void FireRocket(  Vector vLaunchPos, Vector vLaunchDir  ) {};
+
+	virtual bool	GetTrackPatherTarget( Vector *pPos );
+	virtual CBaseEntity *GetTrackPatherTargetEnt();
+
+	void	DrawDebugGeometryOverlays(void);
+
+	// Rotor washes
+	virtual void	DrawRotorWash( float flAltitude, const Vector &vecRotorOrigin );
+	void			DoRotorPhysicsPush( const Vector &vecRotorOrigin, float flAltitude );
+	bool			DoWashPush( washentity_t *pWash, const Vector &vecWashOrigin );
+	void			StopRotorWash( void );
+
+	// Purpose: Marks the entity for deletion
+	void			InputKill( inputdata_t &inputdata );
+	void			DelayedKillThink( );
+
+	virtual			void SetTransmit( CCheckTransmitInfo *pInfo, bool bAlways );
+
+	// Helicopters never burn
+	virtual void	Ignite( float flFlameLifetime, bool bNPCOnly, float flSize, bool bCalledByLevelDesigner ) { return; }
+
+
+protected:
+	void			HelicopterMove( );
+
+	// Updates the enemy
+	void			UpdateEnemy();
+
+	// Override the desired position if your derived helicopter is doing something special
+	virtual void	UpdateDesiredPosition( void );
+
+	// Updates the facing direction
+	virtual void	UpdateFacingDirection();
+
+	// Fire weapons
+	void			FireWeapons();
+
+	// Computes the actual position to fly to
+	void			ComputeActualTargetPosition( float flSpeed, float flTime, float flPerpDist, Vector *pDest, bool bApplyNoise = true );
+
+	// Gets the max speed of the helicopter
+	virtual float	GetMaxSpeed();
+	virtual float	GetMaxSpeedFiring();
+
+	// Updates the enemy
+	virtual float	EnemySearchDistance( );
+
+	// Rotor wash think
+	void			RotorWashThink( void );
+
+	// Purpose: Push an airboat in our wash
+	void			DoWashPushOnAirboat( CBaseEntity *pAirboat, const Vector &vecWashToAirboat, float flWashAmount );
+
+	// Updates the rotor wash volume
+	virtual void	UpdateRotorWashVolume();
+
+	// Rotor sound
+	void	InputEnableRotorSound( inputdata_t &inputdata );
+	void	InputDisableRotorSound( inputdata_t &inputdata );
+
+protected:
+	CSoundPatch		*m_pRotorSound;				// Rotor loop played when the player can see the helicopter
+	CSoundPatch		*m_pRotorBlast;				// Sound played when the helicopter's pushing around physics objects
+
+	float			m_flForce;
+	int				m_fHelicopterFlags;
+
+	Vector			m_vecDesiredFaceDir;
+
+	float			m_flLastSeen;
+	float			m_flPrevSeen;
+
+	int				m_iSoundState;		// don't save this
+
+	Vector			m_vecTargetPosition;
+
+	float			m_flMaxSpeed;		// Maximum speed of the helicopter.
+	float			m_flMaxSpeedFiring;	// Maximum speed of the helicopter whilst firing guns.
+
+	float			m_flGoalSpeed;		// Goal speed
+	float			m_flInitialSpeed;
+
+	float			m_flRandomOffsetTime;
+	Vector			m_vecRandomOffset;
+	float			m_flRotorWashEntitySearchTime;
+	bool			m_bSuppressSound;
+
+	EHANDLE			m_hRotorWash;	// Attached rotorwash entity
+
+	// Inputs
+	void			InputActivate( inputdata_t &inputdata );
+
+	// Inputs
+	void			InputGunOn( inputdata_t &inputdata );
+	void			InputGunOff( inputdata_t &inputdata );
+	void			InputMissileOn( inputdata_t &inputdata );
+	void			InputMissileOff( inputdata_t &inputdata );
+	void			InputEnableRotorWash( inputdata_t &inputdata );
+	void			InputDisableRotorWash( inputdata_t &inputdata );
+	void			InputMoveTopSpeed( inputdata_t &inputdata );	// Causes the helicopter to immediately accelerate to its desired velocity
+	void			InputMoveSpecifiedSpeed( inputdata_t &inputdata );
+	void			InputSetAngles( inputdata_t &inputdata );	// Sets the angles of the helicopter
+
+protected:	
+	// Custom conservative collision volumes
+	Vector			m_cullBoxMins;
+	Vector			m_cullBoxMaxs;
+
+	// Wash physics pushing
+	CUtlVector< washentity_t >	m_hEntitiesPushedByWash;
+
+	void SetStartupTime( float time ) { m_flStartupTime = time; }
+private:
+	CNetworkVar( float, m_flStartupTime );
+};
+
+//-----------------------------------------------------------------------------
+// This entity is used to create little force spheres that the helicopter
+// should avoid. 
+//-----------------------------------------------------------------------------
+class CAvoidSphere : public CBaseEntity
+{
+	DECLARE_DATADESC();
+
+public:
+	DECLARE_CLASS( CAvoidSphere, CBaseEntity );
+
+	void Init( float flRadius );
+	virtual void Activate();
+	virtual void UpdateOnRemove();
+
+	static void ComputeAvoidanceForces( CBaseEntity *pEntity, float flEntityRadius, float flAvoidTime, Vector *pVecAvoidForce );
+
+private:
+	typedef CHandle<CAvoidSphere> AvoidSphereHandle_t;
+
+	float m_flRadius;
+	
+	static CUtlVector< AvoidSphereHandle_t > s_AvoidSpheres; 
+};
+
+
+//-----------------------------------------------------------------------------
+// This entity is used to create little force boxes that the helicopter
+// should avoid. 
+//-----------------------------------------------------------------------------
+class CAvoidBox : public CBaseEntity
+{
+	DECLARE_DATADESC();
+
+public:
+	DECLARE_CLASS( CAvoidBox, CBaseEntity );
+
+	virtual void Spawn( );
+	virtual void Activate();
+	virtual void UpdateOnRemove();
+
+	static void ComputeAvoidanceForces( CBaseEntity *pEntity, float flEntityRadius, float flAvoidTime, Vector *pVecAvoidForce );
+
+private:
+	typedef CHandle<CAvoidBox> AvoidBoxHandle_t;	
+	static CUtlVector< AvoidBoxHandle_t > s_AvoidBoxes; 
+};
+
+
+#endif // CBASEHELICOPTER_H