C++ CBaseEntity::BodyTarget方法代码示例

//=========================================================
// CheckRangeAttack1
//=========================================================
BOOL COtis :: CheckRangeAttack1 ( float flDot, float flDist )
{
	if ( flDist <= 1024 && flDot >= 0.5 )
	{
		if ( gpGlobals->time > m_checkAttackTime )
		{
			TraceResult tr;
			Vector shootOrigin = pev->origin + Vector( 0, 0, 55 );
			CBaseEntity *pEnemy = m_hEnemy;
			Vector shootTarget = ( (pEnemy->BodyTarget( shootOrigin ) - pEnemy->pev->origin) + m_vecEnemyLKP );
			UTIL_TraceLine( shootOrigin, shootTarget, dont_ignore_monsters, ENT(pev), &tr );
			m_checkAttackTime = gpGlobals->time + 1;

			if ( tr.flFraction == 1.0 || (tr.pHit != NULL && CBaseEntity::Instance(tr.pHit) == pEnemy) )
				m_lastAttackCheck = TRUE;
			else
				m_lastAttackCheck = FALSE;

			m_checkAttackTime = gpGlobals->time + 1.5;
		}

		return m_lastAttackCheck;
	}

	return FALSE;
}

void CBlackHole::RadiusDamage( )
{
	CBaseEntity *pEntity = NULL;
	TraceResult	tr;
	float		flAdjustedDamage;
	Vector		vecSpot;

	entvars_t *pevOwner = VARS( pev->owner );
	Vector vecSrc = pev->origin + Vector(0,0,1);

	if ( !pevOwner )
		pevOwner = pev;

	CBaseEntity *pPlayer = CBaseEntity::Instance (pevOwner);

	// iterate on all entities in the vicinity.
	while ((pEntity = UTIL_FindEntityInSphere( pEntity, vecSrc, (dmg_chrono_radius.value * (mp_wpn_power.value/100)) )) != NULL)
	{
		if ( pEntity->pev->movetype != MOVETYPE_PUSH && pEntity->pev->movetype != MOVETYPE_NONE && pEntity->pev->movetype != MOVETYPE_FOLLOW && pEntity->pev->movetype != MOVETYPE_NOCLIP )
		{
			if (pEntity == this) continue;

			if (CVAR_GET_FLOAT("mp_noselfdamage")==1 && pEntity->pev == pevOwner )
			continue;

			if (CVAR_GET_FLOAT("mp_noteamdamage")==1 && g_pGameRules->PlayerRelationship(pPlayer, pEntity) == GR_TEAMMATE && pEntity->pev != pevOwner)
			continue;

			vecSpot = pEntity->BodyTarget( vecSrc );
			
			UTIL_TraceLine ( vecSrc, vecSpot, ignore_monsters, ENT(pev), &tr );

			if ( tr.flFraction == 1.0 || tr.pHit == pEntity->edict() )
			{
				flAdjustedDamage = ( vecSrc - tr.vecEndPos ).Length();
			
				if ( flAdjustedDamage <	1 )
					flAdjustedDamage = 1;
			
				Vector m_vel = ( vecSrc - tr.vecEndPos ).Normalize() * ((500 * (dmg_chrono_radius.value * (mp_wpn_power.value/100)) / flAdjustedDamage) + 150);

				if (m_vel.Length() > 1000) m_vel = m_vel.Normalize() * 1000;

				pEntity->pev->velocity = m_vel;

				if (flAdjustedDamage < 200)
				{
					if (!(pEntity->Classify() == CLASS_MACHINE || pEntity->IsBot() || pEntity->IsPlayer() || FClassnameIs(pEntity->pev, "laser_dot") || FClassnameIs(pEntity->pev, "laser_spot")))
					{
						pEntity->Killed ( pevOwner, 0 );
						return;
					}
				}
				
			}
		}
	}
}

//-----------------------------------------------------------------------------
// Purpose: 
//-----------------------------------------------------------------------------
void CPhysExplosion::Explode( CBaseEntity *pActivator )
{
	CBaseEntity *pEntity = NULL;
	float		adjustedDamage, falloff, flDist;
	Vector		vecSpot;

	falloff = 1.0 / 2.5;

	// iterate on all entities in the vicinity.
	// I've removed the traceline heuristic from phys explosions. SO right now they will
	// affect entities through walls. (sjb)
	// UNDONE: Try tracing world-only?
	while ((pEntity = FindEntity(pEntity, pActivator)) != NULL)
	{
		// UNDONE: Ask the object if it should get force if it's not MOVETYPE_VPHYSICS?
		if ( pEntity->m_takedamage != DAMAGE_NO && (pEntity->GetMoveType() == MOVETYPE_VPHYSICS || (pEntity->VPhysicsGetObject() && !pEntity->IsPlayer())) )
		{
			vecSpot = pEntity->BodyTarget( GetAbsOrigin() );
			
			// decrease damage for an ent that's farther from the bomb.
			flDist = ( GetAbsOrigin() - vecSpot ).Length();

			if( m_radius == 0 || flDist <= m_radius )
			{
				adjustedDamage =  flDist * falloff;
				adjustedDamage = m_damage - adjustedDamage;
		
				if ( adjustedDamage < 0 )
				{
					adjustedDamage = 0;
				}

				CTakeDamageInfo info( this, this, adjustedDamage, DMG_BLAST );
				CalculateExplosiveDamageForce( &info, (vecSpot - GetAbsOrigin()), GetAbsOrigin() );

				if ( HasSpawnFlags( SF_PHYSEXPLOSION_NODAMAGE ) )
				{
					pEntity->VPhysicsTakeDamage( info );
				}
				else
				{
					pEntity->TakeDamage( info );
				}
			}
		}
	}
}

// Mortar launch
BOOL CBigMomma::CheckRangeAttack1( float flDot, float flDist )
{
	if ( flDist <= BIG_MORTARDIST && m_mortarTime < gpGlobals->time )
	{
		CBaseEntity *pEnemy = m_hEnemy;

		if ( pEnemy )
		{
			Vector startPos = pev->origin;
			startPos.z += 180;
			pev->movedir = VecCheckSplatToss( pev, startPos, pEnemy->BodyTarget( pev->origin ), RANDOM_FLOAT( 150, 500 ) );
			if ( pev->movedir != g_vecZero )
				return TRUE;
		}
	}
	return FALSE;
}

//-----------------------------------------------------------------------------
// Purpose: Push a physics object in our wash. Return false if it's now out of our wash
//-----------------------------------------------------------------------------
bool CBaseHelicopter::DoWashPush( washentity_t *pWash, Vector vecWashOrigin )
{
	if ( !pWash || !pWash->hEntity.Get() )
		return false;

	// Make sure the entity is still within our wash's radius
	CBaseEntity *pEntity = pWash->hEntity;
	Vector vecSpot = pEntity->BodyTarget( vecWashOrigin );
	Vector vecToSpot = ( vecSpot - vecWashOrigin );
	vecToSpot.z = 0;
	float flDist = VectorNormalize( vecToSpot );
	if ( flDist > BASECHOPPER_WASH_RADIUS )
		return false;

	IPhysicsObject *pPhysObject = pEntity->VPhysicsGetObject();

	if ( pPhysObject == NULL )
		return false;

	// Push it away from the center of the wash
	float flMass = pPhysObject->GetMass();
	float flPushTime = (gpGlobals->curtime - pWash->flWashStartTime);
	float flMinPush = BASECHOPPER_WASH_PUSH_MIN * flMass;
	float flMaxPush = BASECHOPPER_WASH_PUSH_MAX * flMass;
	float flWashAmount = min( flMaxPush, RemapVal( flPushTime, 0, BASECHOPPER_WASH_RAMP_TIME, flMinPush, flMaxPush ) );
	Vector vecForce = flWashAmount * vecToSpot * phys_pushscale.GetFloat();
	pEntity->VPhysicsTakeDamage( CTakeDamageInfo( this, this, vecForce, vecWashOrigin, flWashAmount, DMG_BLAST ) );

	// Debug
	if ( g_debug_basehelicopter.GetInt() == BASECHOPPER_DEBUG_WASH )
	{
		NDebugOverlay::Cross3D( pEntity->GetAbsOrigin(), -Vector(4,4,4), Vector(4,4,4), 255, 0, 0, true, 0.1f );
		NDebugOverlay::Line( pEntity->GetAbsOrigin(), pEntity->GetAbsOrigin() + vecForce, 255, 255, 0, true, 0.1f );

		IPhysicsObject *pPhysObject = pEntity->VPhysicsGetObject();
		Msg("Pushed %s (mass %f) with force %f (min %.2f max %.2f) at time %.2f\n", pEntity->GetClassname(), pPhysObject->GetMass(), flWashAmount, flMinPush, flMaxPush, gpGlobals->curtime );
	}

	// If we've pushed this thing for some time, remove it to give us a chance to find lighter things nearby
	if ( flPushTime > 2.0 )
		return false;

	return true;
}

//=========================================================
// CheckRangeAttack1
//=========================================================
bool CNPC_HL1Barney::CheckRangeAttack1 ( float flDot, float flDist )
{
	if ( gpGlobals->curtime > m_flCheckAttackTime )
	{
		trace_t tr;
		
		Vector shootOrigin = GetAbsOrigin() + Vector( 0, 0, 55 );
		CBaseEntity *pEnemy = GetEnemy();
		Vector shootTarget = ( (pEnemy->BodyTarget( shootOrigin ) - pEnemy->GetAbsOrigin()) + GetEnemyLKP() );
		
		UTIL_TraceLine ( shootOrigin, shootTarget, MASK_SOLID, this, COLLISION_GROUP_NONE, &tr);
		m_flCheckAttackTime = gpGlobals->curtime + 1;
		if ( tr.fraction == 1.0 || ( tr.m_pEnt != NULL && tr.m_pEnt == pEnemy) )
			m_fLastAttackCheck = TRUE;
		else
			m_fLastAttackCheck = FALSE;

		m_flCheckAttackTime = gpGlobals->curtime + 1.5;
	}
	
	return m_fLastAttackCheck;
}

// Mortar launch
int CNPC_BigMomma::RangeAttack1Conditions( float flDot, float flDist )
{
	if ( flDist > BIG_MORTARDIST )
		 return COND_TOO_FAR_TO_ATTACK;

	if ( flDist <= BIG_MORTARDIST && m_mortarTime < gpGlobals->curtime )
	{
		CBaseEntity *pEnemy = GetEnemy();

		if ( pEnemy )
		{
			Vector startPos = GetAbsOrigin();
			startPos.z += 180;

			m_vTossDir = VecCheckSplatToss( this, startPos, pEnemy->BodyTarget( GetAbsOrigin() ), random->RandomFloat( 150, 500 ) );

			if ( m_vTossDir != vec3_origin )
				return COND_CAN_RANGE_ATTACK1;
		}
	}
	
	return COND_NONE;
}

void CAPCController::TrackTarget( void )
{
	trace_t tr;
	bool updateTime = FALSE, lineOfSight;
	QAngle angles;
	Vector barrelEnd;
	CBaseEntity *pTarget = NULL;

	barrelEnd.Init();

	if ( IsActive() )
	{
		SetNextThink( gpGlobals->curtime + 0.1f );
	}
	else
	{
		return;
	}

	// -----------------------------------
	//  Get world target position
	// -----------------------------------
	barrelEnd = WorldBarrelPosition();
	Vector worldTargetPosition;
	CBaseEntity *pEntity = (CBaseEntity *)m_hTarget;
	if ( !pEntity || ( pEntity->GetFlags() & FL_NOTARGET ) )
	{
		m_hTarget = FindTarget( m_targetEntityName, NULL );
		if ( IsActive() )
		{
			SetNextThink( gpGlobals->curtime + 2 );	// Wait 2 sec s
		}

		return;
	}
	pTarget = pEntity;

	// Calculate angle needed to aim at target
	worldTargetPosition = pEntity->EyePosition();

	float range = (worldTargetPosition - barrelEnd).Length();

	if ( !InRange( range ) )
	{
		m_bFireDelayed = false;
		return;
	}

	UTIL_TraceLine( barrelEnd, worldTargetPosition, MASK_BLOCKLOS, this, COLLISION_GROUP_NONE, &tr );

	lineOfSight = FALSE;
	// No line of sight, don't track
	if ( tr.fraction == 1.0 || tr.m_pEnt == pTarget )
	{
		lineOfSight = TRUE;

		CBaseEntity *pInstance = pTarget;
		if ( InRange( range ) && pInstance && pInstance->IsAlive() )
		{
			updateTime = TRUE;

			// Sight position is BodyTarget with no noise (so gun doesn't bob up and down)
			m_sightOrigin = pInstance->BodyTarget( GetLocalOrigin(), false );
		}
	}

	// Convert targetPosition to parent
	angles = AimBarrelAt( m_parentMatrix.WorldToLocal( m_sightOrigin ) );


	// Force the angles to be relative to the center position
	float offsetY = UTIL_AngleDistance( angles.y, m_yawCenter );
	float offsetX = UTIL_AngleDistance( angles.x, m_pitchCenter );
	angles.y = m_yawCenter + offsetY;
	angles.x = m_pitchCenter + offsetX;

	// Move toward target at rate or less
	float distY = UTIL_AngleDistance( angles.y, GetLocalAngles().y );

	QAngle vecAngVel = GetLocalAngularVelocity();
	vecAngVel.y = distY * 10;
	vecAngVel.y = clamp( vecAngVel.y, -m_yawRate, m_yawRate );

	// Move toward target at rate or less
	float distX = UTIL_AngleDistance( angles.x, GetLocalAngles().x );
	vecAngVel.x = distX  * 10;
	vecAngVel.x = clamp( vecAngVel.x, -m_pitchRate, m_pitchRate );
	SetLocalAngularVelocity( vecAngVel );

	SetMoveDoneTime( 0.1 );

	Vector forward;
	AngleVectors( GetLocalAngles(), &forward );
	forward = m_parentMatrix.ApplyRotation( forward );

	AngleVectors(angles, &forward);

	if ( lineOfSight == TRUE )
	{
		// FIXME: This will ultimately have to deal with NPCs being in the vehicle as well
//.........这里部分代码省略.........

void CGargantua::RunTask( const Task_t& task )
{
	switch ( task.iTask )
	{
	case TASK_DIE:
		if ( gpGlobals->time > m_flWaitFinished )
		{
			SetRenderFX( kRenderFxExplode );
			SetRenderColor( Vector( 255, 0, 0 ) );
			StopAnimation();
			SetNextThink( gpGlobals->time + 0.15 );
			SetThink( &CGargantua::SUB_Remove );
			int i;
			int parts = MODEL_FRAMES( gGargGibModel );
			for ( i = 0; i < 10; i++ )
			{
				auto pGib = CGib::GibCreate( GARG_GIB_MODEL );
				
				int bodyPart = 0;
				if ( parts > 1 )
					bodyPart = RANDOM_LONG( 0, GetBody() -1 );

				pGib->SetBody( bodyPart );
				pGib->m_bloodColor = BLOOD_COLOR_YELLOW;
				pGib->m_material = matNone;
				pGib->SetAbsOrigin( GetAbsOrigin() );
				pGib->SetAbsVelocity( UTIL_RandomBloodVector() * RANDOM_FLOAT( 300, 500 ) );
				pGib->SetNextThink( gpGlobals->time + 1.25 );
				pGib->SetThink( &CGib::SUB_FadeOut );
			}
			MESSAGE_BEGIN( MSG_PVS, SVC_TEMPENTITY, GetAbsOrigin() );
				WRITE_BYTE( TE_BREAKMODEL);

				// position
				WRITE_COORD( GetAbsOrigin().x );
				WRITE_COORD( GetAbsOrigin().y );
				WRITE_COORD( GetAbsOrigin().z );

				// size
				WRITE_COORD( 200 );
				WRITE_COORD( 200 );
				WRITE_COORD( 128 );

				// velocity
				WRITE_COORD( 0 ); 
				WRITE_COORD( 0 );
				WRITE_COORD( 0 );

				// randomization
				WRITE_BYTE( 200 ); 

				// Model
				WRITE_SHORT( gGargGibModel );	//model id#

				// # of shards
				WRITE_BYTE( 50 );

				// duration
				WRITE_BYTE( 20 );// 3.0 seconds

				// flags

				WRITE_BYTE( BREAK_FLESH );
			MESSAGE_END();

			return;
		}
		else
			CBaseMonster::RunTask( task );
		break;

	case TASK_FLAME_SWEEP:
		if ( gpGlobals->time > m_flWaitFinished )
		{
			FlameDestroy();
			TaskComplete();
			FlameControls( 0, 0 );
			SetBoneController( 0, 0 );
			SetBoneController( 1, 0 );
		}
		else
		{
			bool cancel = false;

			Vector angles = g_vecZero;

			FlameUpdate();
			CBaseEntity *pEnemy = m_hEnemy;
			if ( pEnemy )
			{
				Vector org = GetAbsOrigin();
				org.z += 64;
				Vector dir = pEnemy->BodyTarget(org) - org;
				angles = UTIL_VecToAngles( dir );
				angles.x = -angles.x;
				angles.y -= GetAbsAngles().y;
				if ( dir.Length() > 400 )
					cancel = true;
			}
			if ( fabs(angles.y) > 60 )
//.........这里部分代码省略.........

void CNPC_Portal_FloorTurret::FireBullet( const char *pTargetName )
{
	CBaseEntity *pEnemy = gEntList.FindEntityByName( NULL, pTargetName );
	if ( !pEnemy )
		return;

	//Get our shot positions
	Vector vecMid = EyePosition();
	Vector vecMidEnemy = pEnemy->BodyTarget( vecMid );

	// Store off our last seen location so we can suppress it later
	m_vecEnemyLKP = vecMidEnemy;

	//Calculate dir and dist to enemy
	Vector	vecDirToEnemy = vecMidEnemy - vecMid;
	m_flDistToEnemy = VectorNormalize( vecDirToEnemy );

	//We want to look at the enemy's eyes so we don't jitter
	Vector	vecDirToEnemyEyes = vecMidEnemy - vecMid;
	VectorNormalize( vecDirToEnemyEyes );

	QAngle vecAnglesToEnemy;
	VectorAngles( vecDirToEnemyEyes, vecAnglesToEnemy );

	Vector vecMuzzle, vecMuzzleDir;
	GetAttachment( m_iMuzzleAttachment, vecMuzzle, &vecMuzzleDir );

	if ( m_flShotTime < gpGlobals->curtime )
	{
		Vector2D vecDirToEnemy2D = vecDirToEnemy.AsVector2D();
		Vector2D vecMuzzleDir2D = vecMuzzleDir.AsVector2D();

		if ( m_flDistToEnemy < 60.0 )
		{
			vecDirToEnemy2D.NormalizeInPlace();
			vecMuzzleDir2D.NormalizeInPlace();
		}

		//Fire the gun
		if( m_bOutOfAmmo )
		{
			DryFire();
		}
		else
		{
			SetActivity( (Activity) ACT_FLOOR_TURRET_OPEN_IDLE );
			SetActivity( (Activity)( ( m_bShootWithBottomBarrels ) ? ( ACT_FLOOR_TURRET_FIRE2 ) : ( ACT_FLOOR_TURRET_FIRE ) ) );

			//Fire the weapon
#if !DISABLE_SHOT
			Shoot( vecMuzzle, vecDirToEnemy, true );
#endif
		}

		//If we can see our enemy, face it
		m_vecGoalAngles.y = vecAnglesToEnemy.y;
		m_vecGoalAngles.x = vecAnglesToEnemy.x;

		//Turn to face
		UpdateFacing();

		EmitSound( "NPC_FloorTurret.Alert" );
		SetThink( &CNPC_FloorTurret::SuppressThink );
	}
}

//-----------------------------------------------------------------------------
// Purpose: 
//-----------------------------------------------------------------------------
void CBaseHelicopter::DoRotorPhysicsPush( const Vector &vecRotorOrigin, float flAltitude )
{
	CBaseEntity *pEntity = NULL;
	trace_t tr;

	// First, trace down and find out where the was is hitting the ground
	UTIL_TraceLine( vecRotorOrigin, vecRotorOrigin+Vector(0,0,-flAltitude), (MASK_SOLID_BRUSHONLY|CONTENTS_WATER), NULL, COLLISION_GROUP_NONE, &tr );
	// Always raise the physics origin a bit
	Vector vecPhysicsOrigin = tr.endpos + Vector(0,0,64);

	// Debug
	if ( g_debug_basehelicopter.GetInt() == BASECHOPPER_DEBUG_WASH )
	{
		NDebugOverlay::Cross3D( vecPhysicsOrigin, -Vector(16,16,16), Vector(16,16,16), 0, 255, 255, true, 0.1f );
	}

	// Push entities that we've pushed before, and are still within range
	// Walk backwards because they may be removed if they're now out of range
	int iCount = m_hEntitiesPushedByWash.Count();
	bool bWasPushingObjects = (iCount > 0);
	for ( int i = (iCount-1); i >= 0; i-- )
	{
		if ( !DoWashPush( &(m_hEntitiesPushedByWash[i]), vecPhysicsOrigin ) )
		{
			// Out of range now, so remove
			m_hEntitiesPushedByWash.Remove(i);
		}
	}

	if ( m_flRotorWashEntitySearchTime > gpGlobals->curtime )
		return;

	// Any spare slots?
	iCount = m_hEntitiesPushedByWash.Count();
	if ( iCount >= BASECHOPPER_WASH_MAX_OBJECTS )
		return;

	// Find the lightest physics entity below us and add it to our list to push around
	CBaseEntity *pLightestEntity = NULL;
	float flLightestMass = 9999;
	while ((pEntity = gEntList.FindEntityInSphere(pEntity, vecPhysicsOrigin, BASECHOPPER_WASH_RADIUS )) != NULL)
	{
		IRotorWashShooter *pShooter = GetRotorWashShooter( pEntity );

		if ( pEntity->IsEFlagSet( EFL_NO_ROTORWASH_PUSH ))
			continue;

		if ( pShooter || pEntity->GetMoveType() == MOVETYPE_VPHYSICS || (pEntity->VPhysicsGetObject() && !pEntity->IsPlayer()) ) 
		{
			// Make sure it's not already in our wash
			bool bAlreadyPushing = false;
			for ( int i = 0; i < iCount; i++ )
			{
				if ( m_hEntitiesPushedByWash[i].hEntity == pEntity )
				{
					bAlreadyPushing = true;
					break;
				}
			}
			if ( bAlreadyPushing )
				continue;

			float flMass = FLT_MAX;
			if ( pShooter )
			{
				flMass = 1.0f;
			}
			else
			{
				// Don't try to push anything too big
				IPhysicsObject *pPhysObject = pEntity->VPhysicsGetObject();
				if ( pPhysObject )
				{
					flMass = pPhysObject->GetMass();
					if ( flMass > BASECHOPPER_WASH_MAX_MASS )
						continue;
				}
			}

			// Ignore anything bigger than the one we've already found
			if ( flMass > flLightestMass )
				continue;

			Vector vecSpot = pEntity->BodyTarget( vecPhysicsOrigin );

			// Don't push things too far below our starting point (helps reduce through-roof cases w/o doing a trace)
			if ( fabs( vecSpot.z - vecPhysicsOrigin.z ) > 96 )
				continue;

			Vector vecToSpot = ( vecSpot - vecPhysicsOrigin );
			vecToSpot.z = 0;
			float flDist = VectorNormalize( vecToSpot );
			if ( flDist > BASECHOPPER_WASH_RADIUS )
				continue;

			
			// Try to cast to the helicopter; if we can't, then we can't be hit.
//.........这里部分代码省略.........

// Add the ability to ignore the world trace
void CSDKGameRules::RadiusDamage( const CTakeDamageInfo &info, const Vector &vecSrcIn, float flRadius, int iClassIgnore, bool bIgnoreWorld )
{
	CBaseEntity *pEntity = NULL;
	trace_t		tr;
	float		flAdjustedDamage, falloff;
	Vector		vecSpot;
	Vector		vecToTarget;
	Vector		vecEndPos;

	Vector vecSrc = vecSrcIn;

	if ( flRadius )
		falloff = info.GetDamage() / flRadius;
	else
		falloff = 1.0;

	int bInWater = (UTIL_PointContents ( vecSrc ) & MASK_WATER) ? true : false;

	vecSrc.z += 1;// in case grenade is lying on the ground

	// iterate on all entities in the vicinity.
	for ( CEntitySphereQuery sphere( vecSrc, flRadius ); ( pEntity = sphere.GetCurrentEntity() ) != NULL; sphere.NextEntity() )
	{
		if ( pEntity->m_takedamage != DAMAGE_NO )
		{
			// UNDONE: this should check a damage mask, not an ignore
			if ( iClassIgnore != CLASS_NONE && pEntity->Classify() == iClassIgnore )
			{// houndeyes don't hurt other houndeyes with their attack
				continue;
			}

			// blast's don't tavel into or out of water
			if (bInWater && pEntity->GetWaterLevel() == 0)
				continue;
			if (!bInWater && pEntity->GetWaterLevel() == 3)
				continue;

			// radius damage can only be blocked by the world
			vecSpot = pEntity->BodyTarget( vecSrc );



			bool bHit = false;

			if( bIgnoreWorld )
			{
				vecEndPos = vecSpot;
				bHit = true;
			}
			else
			{
				UTIL_TraceLine( vecSrc, vecSpot, MASK_SOLID_BRUSHONLY, info.GetInflictor(), COLLISION_GROUP_NONE, &tr );

				if (tr.startsolid)
				{
					// if we're stuck inside them, fixup the position and distance
					tr.endpos = vecSrc;
					tr.fraction = 0.0;
				}

				vecEndPos = tr.endpos;

				if( tr.fraction == 1.0 || tr.m_pEnt == pEntity )
				{
					bHit = true;
				}
			}

			if ( bHit )
			{
				// the explosion can 'see' this entity, so hurt them!
				//vecToTarget = ( vecSrc - vecEndPos );
				vecToTarget = ( vecEndPos - vecSrc );

				// decrease damage for an ent that's farther from the bomb.
				flAdjustedDamage = vecToTarget.Length() * falloff;
				flAdjustedDamage = info.GetDamage() - flAdjustedDamage;

				if ( flAdjustedDamage > 0 )
				{
					CTakeDamageInfo adjustedInfo = info;
					adjustedInfo.SetDamage( flAdjustedDamage );

					Vector dir = vecToTarget;
					VectorNormalize( dir );

					// If we don't have a damage force, manufacture one
					if ( adjustedInfo.GetDamagePosition() == vec3_origin || adjustedInfo.GetDamageForce() == vec3_origin )
					{
						CalculateExplosiveDamageForce( &adjustedInfo, dir, vecSrc, 1.5	/* explosion scale! */ );
					}
					else
					{
						// Assume the force passed in is the maximum force. Decay it based on falloff.
						float flForce = adjustedInfo.GetDamageForce().Length() * falloff;
						adjustedInfo.SetDamageForce( dir * flForce );
						adjustedInfo.SetDamagePosition( vecSrc );
					}

//.........这里部分代码省略.........

void CNPC_Portal_FloorTurret::ActiveThink( void )
{
	LaserOn();

	//Allow descended classes a chance to do something before the think function
	if ( PreThink( TURRET_ACTIVE ) )
		return;

	HackFindEnemy();

	//Update our think time
	SetNextThink( gpGlobals->curtime + 0.1f );

	CBaseEntity *pEnemy = GetEnemy();

	//If we've become inactive, go back to searching
	if ( ( m_bActive == false ) || ( pEnemy == NULL ) )
	{
		SetEnemy( NULL );
		m_flLastSight = gpGlobals->curtime + FLOOR_TURRET_MAX_WAIT;
		SetThink( &CNPC_FloorTurret::SearchThink );
		m_vecGoalAngles = GetAbsAngles();
		return;
	}

	//Get our shot positions
	Vector vecMid = EyePosition();
	Vector vecMidEnemy = pEnemy->BodyTarget( vecMid );

	// Store off our last seen location so we can suppress it later
	m_vecEnemyLKP = vecMidEnemy;

	//Look for our current enemy
	bool bEnemyInFOV = FInViewCone( pEnemy );
	bool bEnemyVisible = FVisible( pEnemy ) && pEnemy->IsAlive();

	//Calculate dir and dist to enemy
	Vector	vecDirToEnemy = vecMidEnemy - vecMid;	
	m_flDistToEnemy = VectorNormalize( vecDirToEnemy );

	// If the enemy isn't in the normal fov, check the fov through portals
	CProp_Portal *pPortal = NULL;
	if ( pEnemy->IsAlive() )
	{
		pPortal = FInViewConeThroughPortal( pEnemy );

		if ( pPortal && FVisibleThroughPortal( pPortal, pEnemy ) )
		{
			// Translate our target across the portal
			Vector vecMidEnemyTransformed;
			UTIL_Portal_PointTransform( pPortal->m_hLinkedPortal->MatrixThisToLinked(), vecMidEnemy, vecMidEnemyTransformed );

			//Calculate dir and dist to enemy
			Vector	vecDirToEnemyTransformed = vecMidEnemyTransformed - vecMid;	
			float	flDistToEnemyTransformed = VectorNormalize( vecDirToEnemyTransformed );

			// If it's not visible through normal means or the enemy is closer through the portal, use the translated info
			if ( !bEnemyInFOV || !bEnemyVisible || flDistToEnemyTransformed < m_flDistToEnemy )
			{
				bEnemyInFOV = true;
				bEnemyVisible = true;
				vecMidEnemy = vecMidEnemyTransformed;
				vecDirToEnemy = vecDirToEnemyTransformed;
				m_flDistToEnemy = flDistToEnemyTransformed;
			}
			else
			{
				pPortal = NULL;
			}
		}
		else
		{
			pPortal = NULL;
		}
	}

	//Draw debug info
	if ( g_debug_turret.GetBool() )
	{
		NDebugOverlay::Cross3D( vecMid, -Vector(2,2,2), Vector(2,2,2), 0, 255, 0, false, 0.05 );
		NDebugOverlay::Cross3D( GetEnemy()->WorldSpaceCenter(), -Vector(2,2,2), Vector(2,2,2), 0, 255, 0, false, 0.05 );
		NDebugOverlay::Line( vecMid, GetEnemy()->WorldSpaceCenter(), 0, 255, 0, false, 0.05 );

		NDebugOverlay::Cross3D( vecMid, -Vector(2,2,2), Vector(2,2,2), 0, 255, 0, false, 0.05 );
		NDebugOverlay::Cross3D( vecMidEnemy, -Vector(2,2,2), Vector(2,2,2), 0, 255, 0, false, 0.05 );
		NDebugOverlay::Line( vecMid, vecMidEnemy, 0, 255, 0, false, 0.05f );
	}

	//See if they're past our FOV of attack
	if ( bEnemyInFOV == false )
	{
		// Should we look for a new target?
		ClearEnemyMemory();
		SetEnemy( NULL );

		if ( m_spawnflags & SF_FLOOR_TURRET_FASTRETIRE )
		{
			// Retire quickly in this case. (The case where we saw the player, but he hid again).
			m_flLastSight = gpGlobals->curtime + FLOOR_TURRET_SHORT_WAIT;
		}
//.........这里部分代码省略.........

void CNPC_Hydra::RunTask( const Task_t *pTask )
{
	switch( pTask->iTask )
	{
	case TASK_HYDRA_DEPLOY:
		{
			m_flHeadGoalInfluence = 1.0;
			float dist = (EyePosition() - m_vecHeadGoal).Length();

			if (dist < m_idealSegmentLength)
			{
				TaskComplete();
			}

			AimHeadInTravelDirection( 0.2 );
		}
		break;

	case TASK_HYDRA_PREP_STAB:
		{
			int i;

			if (m_body.Count() < 2)
			{
				TaskFail( "hydra is too short to begin stab" );
				return;
			}

			CBaseEntity *pTarget = GetTarget();
			if (pTarget == NULL)
			{
				TaskFail( FAIL_NO_TARGET );
			}

			if (pTarget->IsPlayer())
			{
				m_vecTarget = pTarget->EyePosition( );
			}
			else
			{
				m_vecTarget = pTarget->BodyTarget( EyePosition( ) );
			}

			float distToTarget = (m_vecTarget - m_vecHeadGoal).Length();
			float distToBase = (m_vecHeadGoal - GetAbsOrigin()).Length();
			m_idealLength = distToTarget + distToBase * 0.5;

			if (m_idealLength > HYDRA_MAX_LENGTH)
				m_idealLength = HYDRA_MAX_LENGTH;

			if (distToTarget < 100.0)
			{
				m_vecTargetDir = (m_vecTarget - m_vecHeadGoal);
				VectorNormalize( m_vecTargetDir );
				m_vecHeadGoal = m_vecHeadGoal - m_vecTargetDir * (100 - distToTarget) * 0.5;
			}
			else if (distToTarget > 200.0)
			{
				m_vecTargetDir = (m_vecTarget - m_vecHeadGoal);
				VectorNormalize( m_vecTargetDir );
				m_vecHeadGoal = m_vecHeadGoal - m_vecTargetDir * (200.0 - distToTarget) * 0.5;
			}

			// face enemy
			m_vecTargetDir = (m_vecTarget - m_body[m_body.Count()-1].vecPos);
			VectorNormalize( m_vecTargetDir );
			m_vecHeadDir = m_vecHeadDir * 0.6 + m_vecTargetDir * 0.4;
			VectorNormalize( m_vecHeadDir.GetForModify() );

			// build tension towards strike time
			float influence = 1.0 - (m_flTaskEndTime - gpGlobals->curtime) / pTask->flTaskData;
			if (influence > 1)
				influence = 1.0;

			influence = influence * influence * influence;

			m_flHeadGoalInfluence = influence;

			// keep head segment straight
			i = m_body.Count() - 2;
			m_body[i].vecGoalPos = m_vecHeadGoal - m_vecHeadDir * m_body[i].flActualLength;
			m_body[i].flGoalInfluence = influence;

			// curve neck into spiral
			float distBackFromHead = m_body[i].flActualLength;
			Vector right, up;
			VectorVectors( m_vecHeadDir, right, up );

			for (i = i - 1; i > 1 && distBackFromHead < distToTarget; i--)
			{
				distBackFromHead += m_body[i].flActualLength;

				float r = (distBackFromHead / 200) * 3.1415 * 2;

				// spiral
				Vector p0 = m_vecHeadGoal 
							- m_vecHeadDir * distBackFromHead * 0.5 
							+ cos( r ) * m_body[i].flActualLength * right 
							+ sin( r ) * m_body[i].flActualLength * up;

//.........这里部分代码省略.........

//-----------------------------------------------------------------------------
// Purpose: Target doesn't exist or has eluded us, so search for one
//-----------------------------------------------------------------------------
void CNPC_Portal_FloorTurret::SearchThink( void )
{
	//Allow descended classes a chance to do something before the think function
	if ( PreThink( TURRET_SEARCHING ) )
		return;

	SetNextThink( gpGlobals->curtime + 0.05f );

	SetActivity( (Activity) ACT_FLOOR_TURRET_OPEN_IDLE );

	//If our enemy has died, pick a new enemy
	if ( ( GetEnemy() != NULL ) && ( GetEnemy()->IsAlive() == false ) )
	{
		SetEnemy( NULL );
	}

	//Acquire the target
	if ( GetEnemy() == NULL )
	{
		HackFindEnemy();
	}

	LaserOn();

	CBaseEntity *pEnemy = GetEnemy();

	//If we've found a target, spin up the barrel and start to attack
	if ( pEnemy != NULL )
	{
		//Get our shot positions
		Vector vecMid = EyePosition();
		Vector vecMidEnemy = pEnemy->BodyTarget( vecMid );

		//Look for our current enemy
		bool bEnemyInFOV = FInViewCone( pEnemy );
		bool bEnemyVisible = FVisible( pEnemy );

		//Calculate dir and dist to enemy
		Vector	vecDirToEnemy = vecMidEnemy - vecMid;	
		m_flDistToEnemy = VectorNormalize( vecDirToEnemy );

		// If the enemy isn't in the normal fov, check the fov through portals
		CProp_Portal *pPortal = NULL;
		pPortal = FInViewConeThroughPortal( pEnemy );

		if ( pPortal && FVisibleThroughPortal( pPortal, pEnemy ) )
		{
			// Translate our target across the portal
			Vector vecMidEnemyTransformed;
			UTIL_Portal_PointTransform( pPortal->m_hLinkedPortal->MatrixThisToLinked(), vecMidEnemy, vecMidEnemyTransformed );

			//Calculate dir and dist to enemy
			Vector	vecDirToEnemyTransformed = vecMidEnemyTransformed - vecMid;	
			float	flDistToEnemyTransformed = VectorNormalize( vecDirToEnemyTransformed );

			// If it's not visible through normal means or the enemy is closer through the portal, use the translated info
			if ( !bEnemyInFOV || !bEnemyVisible || flDistToEnemyTransformed < m_flDistToEnemy )
			{
				bEnemyInFOV = true;
				bEnemyVisible = true;
				vecMidEnemy = vecMidEnemyTransformed;
				vecDirToEnemy = vecDirToEnemyTransformed;
				m_flDistToEnemy = flDistToEnemyTransformed;
			}
		}

		// Give enemies that are farther away a longer grace period
		float fDistanceRatio = m_flDistToEnemy / PORTAL_FLOOR_TURRET_RANGE;
		m_flShotTime = gpGlobals->curtime + fDistanceRatio * fDistanceRatio * PORTAL_FLOOR_TURRET_MAX_SHOT_DELAY;

		m_flLastSight = 0;
		SetThink( &CNPC_FloorTurret::ActiveThink );
		SetEyeState( TURRET_EYE_SEE_TARGET );

		SpinUp();

		if ( gpGlobals->curtime > m_flNextActivateSoundTime )
		{
			EmitSound( "NPC_FloorTurret.Activate" );
			m_flNextActivateSoundTime = gpGlobals->curtime + 3.0;
		}
		return;
	}

	//Are we out of time and need to retract?
	if ( gpGlobals->curtime > m_flLastSight )
	{
		//Before we retrace, make sure that we are spun down.
		m_flLastSight = 0;
		SetThink( &CNPC_FloorTurret::Retire );
		return;
	}

	//Display that we're scanning
	m_vecGoalAngles.x = GetAbsAngles().x + ( sin( ( m_flLastSight + gpGlobals->curtime * m_fSearchSpeed ) * 1.5f ) * 20.0f );
	m_vecGoalAngles.y = GetAbsAngles().y + ( sin( ( m_flLastSight + gpGlobals->curtime * m_fSearchSpeed ) * 2.5f ) * 20.0f );

//.........这里部分代码省略.........