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game/server/hl2/npc_apcdriver.cpp

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+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+// $NoKeywords: $
+//=============================================================================//
+#include "cbase.h"
+#include "npc_vehicledriver.h"
+#include "vehicle_apc.h"
+
+// memdbgon must be the last include file in a .cpp file!!!
+#include "tier0/memdbgon.h"
+
+#define SF_APCDRIVER_NO_ROCKET_ATTACK	0x10000
+#define SF_APCDRIVER_NO_GUN_ATTACK		0x20000
+
+#define NPC_APCDRIVER_REMEMBER_TIME		4
+
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+//-----------------------------------------------------------------------------
+class CNPC_APCDriver : public CNPC_VehicleDriver
+{
+	DECLARE_CLASS( CNPC_APCDriver, CNPC_VehicleDriver );
+public:
+	DECLARE_DATADESC();
+	DEFINE_CUSTOM_AI;
+
+	virtual void Spawn( void );
+	virtual void Activate( void );
+	
+	virtual bool FVisible( CBaseEntity *pTarget, int traceMask, CBaseEntity **ppBlocker );
+	virtual bool WeaponLOSCondition( const Vector &ownerPos, const Vector &targetPos, bool bSetConditions );
+	virtual Class_T Classify ( void ) { return CLASS_COMBINE; }
+	virtual void PrescheduleThink( );
+	virtual Disposition_t IRelationType(CBaseEntity *pTarget);
+
+	// AI
+	virtual int RangeAttack1Conditions( float flDot, float flDist );
+	virtual int RangeAttack2Conditions( float flDot, float flDist );
+
+private:
+	// Are we being carried by a dropship?
+	bool IsBeingCarried();
+
+	// Enable, disable firing
+	void InputEnableFiring( inputdata_t &inputdata );
+	void InputDisableFiring( inputdata_t &inputdata );
+
+	CHandle<CPropAPC>	m_hAPC;
+	float m_flTimeLastSeenEnemy;
+	bool m_bFiringDisabled;
+};
+
+
+BEGIN_DATADESC( CNPC_APCDriver )
+
+	//DEFINE_FIELD( m_hAPC, FIELD_EHANDLE ),
+	DEFINE_FIELD( m_bFiringDisabled, FIELD_BOOLEAN ),
+	DEFINE_FIELD( m_flTimeLastSeenEnemy, FIELD_TIME ),
+
+	DEFINE_INPUTFUNC( FIELD_VOID, "EnableFiring", InputEnableFiring ),
+	DEFINE_INPUTFUNC( FIELD_VOID, "DisableFiring", InputDisableFiring ),
+
+END_DATADESC()
+
+LINK_ENTITY_TO_CLASS( npc_apcdriver, CNPC_APCDriver );
+
+
+//------------------------------------------------------------------------------
+// Purpose :
+//------------------------------------------------------------------------------
+void CNPC_APCDriver::Spawn( void )
+{
+	BaseClass::Spawn();
+
+	m_flTimeLastSeenEnemy = -NPC_APCDRIVER_REMEMBER_TIME;
+	CapabilitiesClear();
+	CapabilitiesAdd( bits_CAP_INNATE_RANGE_ATTACK1 | bits_CAP_INNATE_RANGE_ATTACK2 );
+	m_bFiringDisabled = false;
+}
+
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+//-----------------------------------------------------------------------------
+void CNPC_APCDriver::Activate( void )
+{
+	BaseClass::Activate();
+
+	m_hAPC = dynamic_cast<CPropAPC*>((CBaseEntity*)m_hVehicleEntity);
+	if ( !m_hAPC )
+	{
+		Warning( "npc_apcdriver %s couldn't find his apc named %s.\n", STRING(GetEntityName()), STRING(m_iszVehicleName) );
+		UTIL_Remove( this );
+		return;
+	}
+	SetParent( m_hAPC );
+	SetAbsOrigin( m_hAPC->WorldSpaceCenter() );
+	SetLocalAngles( vec3_angle );
+
+	m_flDistTooFar = m_hAPC->MaxAttackRange();
+	SetDistLook( m_hAPC->MaxAttackRange() );
+}
+
+
+//-----------------------------------------------------------------------------
+// Enable, disable firing
+//-----------------------------------------------------------------------------
+void CNPC_APCDriver::InputEnableFiring( inputdata_t &inputdata )
+{
+	m_bFiringDisabled = false;
+}
+
+void CNPC_APCDriver::InputDisableFiring( inputdata_t &inputdata )
+{
+	m_bFiringDisabled = true;
+}
+
+	
+//-----------------------------------------------------------------------------
+// Purpose: Let's not hate things the APC makes
+//-----------------------------------------------------------------------------
+Disposition_t CNPC_APCDriver::IRelationType(CBaseEntity *pTarget)
+{
+	if ( pTarget == m_hAPC || (pTarget->GetOwnerEntity() == m_hAPC) )
+		return D_LI;
+
+	return BaseClass::IRelationType(pTarget);
+}
+
+
+//------------------------------------------------------------------------------
+// Are we being carried by a dropship?
+//------------------------------------------------------------------------------
+bool CNPC_APCDriver::IsBeingCarried()
+{
+	// Inert if we're carried...
+	Vector vecVelocity;
+	m_hAPC->GetVelocity( &vecVelocity, NULL );
+	return ( m_hAPC->GetMoveParent() != NULL ) || (fabs(vecVelocity.z) >= 15);
+}
+
+
+
+//------------------------------------------------------------------------------
+// Is the enemy visible?
+//------------------------------------------------------------------------------
+bool CNPC_APCDriver::WeaponLOSCondition(const Vector &ownerPos, const Vector &targetPos, bool bSetConditions)
+{
+	if ( m_hAPC->m_lifeState != LIFE_ALIVE )
+		return false;
+
+	if ( IsBeingCarried() || m_bFiringDisabled )
+		return false;
+
+	float flTargetDist = ownerPos.DistTo( targetPos );
+	if (flTargetDist > m_hAPC->MaxAttackRange())
+		return false;
+
+	return true;
+}
+
+	
+//-----------------------------------------------------------------------------
+// Is the enemy visible?
+//-----------------------------------------------------------------------------
+bool CNPC_APCDriver::FVisible( CBaseEntity *pTarget, int traceMask, CBaseEntity **ppBlocker )
+{
+	if ( m_hAPC->m_lifeState != LIFE_ALIVE )
+		return false;
+
+	if ( IsBeingCarried() || m_bFiringDisabled )
+		return false;
+
+	float flTargetDist = GetAbsOrigin().DistTo( pTarget->GetAbsOrigin() );
+	if (flTargetDist > m_hAPC->MaxAttackRange())
+		return false;
+
+	bool bVisible = m_hAPC->FVisible( pTarget, traceMask, ppBlocker );
+	if ( bVisible && (pTarget == GetEnemy()) )
+	{
+		m_flTimeLastSeenEnemy = gpGlobals->curtime;
+	}
+
+	if ( pTarget->IsPlayer() || pTarget->Classify() == CLASS_BULLSEYE )
+	{
+		if (!bVisible)
+		{
+			if ( ( gpGlobals->curtime - m_flTimeLastSeenEnemy ) <= NPC_APCDRIVER_REMEMBER_TIME )
+				return true;
+		}
+	}
+
+	return bVisible;
+}
+
+
+//-----------------------------------------------------------------------------
+// Purpose:
+// Input  :
+// Output :
+//-----------------------------------------------------------------------------
+int CNPC_APCDriver::RangeAttack1Conditions( float flDot, float flDist )
+{
+	if ( HasSpawnFlags(SF_APCDRIVER_NO_GUN_ATTACK) )
+		return COND_NONE;
+
+	if ( m_hAPC->m_lifeState != LIFE_ALIVE )
+		return COND_NONE;
+
+	if ( IsBeingCarried() || m_bFiringDisabled )
+		return COND_NONE;
+
+	if ( !HasCondition( COND_SEE_ENEMY ) )
+		return COND_NONE;
+
+	if ( !m_hAPC->IsInPrimaryFiringCone() )
+		return COND_NONE;
+
+	// Vehicle not ready to fire again yet?
+	if ( m_pVehicleInterface->Weapon_PrimaryCanFireAt() > gpGlobals->curtime + 0.1f )
+		return COND_NONE;
+
+	float flMinDist, flMaxDist;
+	m_pVehicleInterface->Weapon_PrimaryRanges( &flMinDist, &flMaxDist );
+
+	if (flDist < flMinDist)
+		return COND_NONE;
+
+	if (flDist > flMaxDist)
+		return COND_NONE;
+
+	return COND_CAN_RANGE_ATTACK1;
+}
+
+int CNPC_APCDriver::RangeAttack2Conditions( float flDot, float flDist )
+{
+	if ( HasSpawnFlags(SF_APCDRIVER_NO_ROCKET_ATTACK) )
+		return COND_NONE;
+
+	if ( m_hAPC->m_lifeState != LIFE_ALIVE )
+		return COND_NONE;
+
+	if ( IsBeingCarried() || m_bFiringDisabled )
+		return COND_NONE;
+
+	if ( !HasCondition( COND_SEE_ENEMY ) )
+		return COND_NONE;
+
+	// Vehicle not ready to fire again yet?
+	if ( m_pVehicleInterface->Weapon_SecondaryCanFireAt() > gpGlobals->curtime + 0.1f )
+		return COND_NONE;
+
+	float flMinDist, flMaxDist;
+	m_pVehicleInterface->Weapon_SecondaryRanges( &flMinDist, &flMaxDist );
+
+	if (flDist < flMinDist)
+		return COND_NONE;
+
+	if (flDist > flMaxDist)
+		return COND_NONE;
+
+	return COND_CAN_RANGE_ATTACK2;
+}
+
+
+//-----------------------------------------------------------------------------
+// Aim the laser dot!
+//-----------------------------------------------------------------------------
+void CNPC_APCDriver::PrescheduleThink( )
+{
+	BaseClass::PrescheduleThink();
+
+	if ( m_hAPC->m_lifeState == LIFE_ALIVE )
+	{
+		if ( GetEnemy() )
+		{
+			m_hAPC->AimPrimaryWeapon( GetEnemy()->BodyTarget( GetAbsOrigin(), false ) );
+		}
+		m_hAPC->AimSecondaryWeaponAt( GetEnemy() );
+	}
+	else if ( m_hAPC->m_lifeState == LIFE_DEAD )
+	{
+		UTIL_Remove( this );
+	}
+}
+
+
+//-----------------------------------------------------------------------------
+//
+// Schedules
+//
+//-----------------------------------------------------------------------------
+AI_BEGIN_CUSTOM_NPC( npc_apcdriver, CNPC_APCDriver )
+	
+AI_END_CUSTOM_NPC()