1HEADmaster

1 files changed, 1022 insertions, 0 deletions

diff --git a/game/server/hl2/npc_bullsquid.cpp b/game/server/hl2/npc_bullsquid.cpp
new file mode 100644
index 0000000..2c0706d
--- /dev/null
+++ b/game/server/hl2/npc_bullsquid.cpp
@@ -0,0 +1,1022 @@
+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: Implements the bullsquid
+//
+// $NoKeywords: $
+//=============================================================================//
+
+#include "cbase.h"
+#include "game.h"
+#include "AI_Default.h"
+#include "AI_Schedule.h"
+#include "AI_Hull.h"
+#include "AI_Navigator.h"
+#include "AI_Motor.h"
+#include "ai_squad.h"
+#include "npc_bullsquid.h"
+#include "npcevent.h"
+#include "soundent.h"
+#include "activitylist.h"
+#include "weapon_brickbat.h"
+#include "npc_headcrab.h"
+#include "player.h"
+#include "gamerules.h"		// For g_pGameRules
+#include "ammodef.h"
+#include "grenade_spit.h"
+#include "grenade_brickbat.h"
+#include "entitylist.h"
+#include "shake.h"
+#include "vstdlib/random.h"
+#include "engine/IEngineSound.h"
+#include "movevars_shared.h"
+
+#include "AI_Hint.h"
+#include "AI_Senses.h"
+
+// memdbgon must be the last include file in a .cpp file!!!
+#include "tier0/memdbgon.h"
+
+#define		SQUID_SPRINT_DIST	256 // how close the squid has to get before starting to sprint and refusing to swerve
+
+ConVar sk_bullsquid_health( "sk_bullsquid_health", "0" );
+ConVar sk_bullsquid_dmg_bite( "sk_bullsquid_dmg_bite", "0" );
+ConVar sk_bullsquid_dmg_whip( "sk_bullsquid_dmg_whip", "0" );
+
+//=========================================================
+// monster-specific schedule types
+//=========================================================
+enum
+{
+	SCHED_SQUID_HURTHOP = LAST_SHARED_SCHEDULE + 1,
+	SCHED_SQUID_SEECRAB,
+	SCHED_SQUID_EAT,
+	SCHED_SQUID_SNIFF_AND_EAT,
+	SCHED_SQUID_WALLOW,
+};
+
+//=========================================================
+// monster-specific tasks
+//=========================================================
+enum 
+{
+	TASK_SQUID_HOPTURN = LAST_SHARED_TASK + 1,
+	TASK_SQUID_EAT,
+};
+
+//-----------------------------------------------------------------------------
+// Squid Conditions
+//-----------------------------------------------------------------------------
+enum
+{
+	COND_SQUID_SMELL_FOOD	= LAST_SHARED_CONDITION + 1,
+};
+
+
+//=========================================================
+// Interactions
+//=========================================================
+int	g_interactionBullsquidThrow		= 0;
+
+//=========================================================
+// Monster's Anim Events Go Here
+//=========================================================
+#define		BSQUID_AE_SPIT		( 1 )
+#define		BSQUID_AE_BITE		( 2 )
+#define		BSQUID_AE_BLINK		( 3 )
+#define		BSQUID_AE_ROAR		( 4 )
+#define		BSQUID_AE_HOP		( 5 )
+#define		BSQUID_AE_THROW		( 6 )
+#define		BSQUID_AE_WHIP_SND	( 7 )
+
+LINK_ENTITY_TO_CLASS( npc_bullsquid, CNPC_Bullsquid );
+
+int ACT_SQUID_EXCITED;
+int ACT_SQUID_EAT;
+int ACT_SQUID_DETECT_SCENT;
+int ACT_SQUID_INSPECT_FLOOR;
+
+
+//---------------------------------------------------------
+// Save/Restore
+//---------------------------------------------------------
+BEGIN_DATADESC( CNPC_Bullsquid )
+
+	DEFINE_FIELD( m_fCanThreatDisplay,	FIELD_BOOLEAN ),
+	DEFINE_FIELD( m_flLastHurtTime,		FIELD_TIME ),
+	DEFINE_FIELD( m_flNextSpitTime,		FIELD_TIME ),
+//	DEFINE_FIELD( m_nSquidSpitSprite,	FIELD_INTEGER ),
+	DEFINE_FIELD( m_flHungryTime,		FIELD_TIME ),
+	DEFINE_FIELD( m_nextSquidSoundTime,	FIELD_TIME ),
+
+END_DATADESC()
+
+
+//=========================================================
+// Spawn
+//=========================================================
+void CNPC_Bullsquid::Spawn()
+{
+	Precache( );
+
+	SetModel( "models/bullsquid.mdl");
+	SetHullType(HULL_WIDE_SHORT);
+	SetHullSizeNormal();
+
+	SetSolid( SOLID_BBOX );
+	AddSolidFlags( FSOLID_NOT_STANDABLE );
+	SetMoveType( MOVETYPE_STEP );
+	m_bloodColor		= BLOOD_COLOR_GREEN;
+	
+	SetRenderColor( 255, 255, 255, 255 );
+	
+	m_iHealth			= sk_bullsquid_health.GetFloat();
+	m_flFieldOfView		= 0.2;// indicates the width of this monster's forward view cone ( as a dotproduct result )
+	m_NPCState			= NPC_STATE_NONE;
+	
+	CapabilitiesClear();
+	CapabilitiesAdd( bits_CAP_MOVE_GROUND | bits_CAP_INNATE_RANGE_ATTACK1 | bits_CAP_INNATE_MELEE_ATTACK1 | bits_CAP_INNATE_MELEE_ATTACK2 );
+	
+	m_fCanThreatDisplay	= TRUE;
+	m_flNextSpitTime = gpGlobals->curtime;
+
+	NPCInit();
+
+	m_flDistTooFar		= 784;
+}
+
+//=========================================================
+// Precache - precaches all resources this monster needs
+//=========================================================
+void CNPC_Bullsquid::Precache()
+{
+	PrecacheModel( "models/bullsquid.mdl" );
+	m_nSquidSpitSprite = PrecacheModel("sprites/greenspit1.vmt");// client side spittle.
+
+	UTIL_PrecacheOther( "grenade_spit" );
+
+	PrecacheScriptSound( "NPC_Bullsquid.Idle" );
+	PrecacheScriptSound( "NPC_Bullsquid.Pain" );
+	PrecacheScriptSound( "NPC_Bullsquid.Alert" );
+	PrecacheScriptSound( "NPC_Bullsquid.Death" );
+	PrecacheScriptSound( "NPC_Bullsquid.Attack1" );
+	PrecacheScriptSound( "NPC_Bullsquid.Growl" );
+	PrecacheScriptSound( "NPC_Bullsquid.TailWhip");
+
+	BaseClass::Precache();
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: Indicates this monster's place in the relationship table.
+// Output : 
+//-----------------------------------------------------------------------------
+Class_T	CNPC_Bullsquid::Classify( void )
+{
+	return CLASS_BULLSQUID; 
+}
+
+//=========================================================
+// IdleSound 
+//=========================================================
+#define SQUID_ATTN_IDLE	(float)1.5
+void CNPC_Bullsquid::IdleSound( void )
+{
+	EmitSound( "NPC_Bullsquid.Idle" );
+}
+
+//=========================================================
+// PainSound 
+//=========================================================
+void CNPC_Bullsquid::PainSound( const CTakeDamageInfo &info )
+{
+	EmitSound( "NPC_Bullsquid.Pain" );
+}
+
+//=========================================================
+// AlertSound
+//=========================================================
+void CNPC_Bullsquid::AlertSound( void )
+{
+	EmitSound( "NPC_Bullsquid.Alert" );
+}
+
+//=========================================================
+// DeathSound
+//=========================================================
+void CNPC_Bullsquid::DeathSound( const CTakeDamageInfo &info )
+{
+	EmitSound( "NPC_Bullsquid.Death" );
+}
+
+//=========================================================
+// AttackSound
+//=========================================================
+void CNPC_Bullsquid::AttackSound( void )
+{
+	EmitSound( "NPC_Bullsquid.Attack1" );
+}
+
+//=========================================================
+// GrowlSound
+//=========================================================
+void CNPC_Bullsquid::GrowlSound( void )
+{
+	if (gpGlobals->curtime >= m_nextSquidSoundTime)
+	{
+		EmitSound( "NPC_Bullsquid.Growl" );
+		m_nextSquidSoundTime	= gpGlobals->curtime + random->RandomInt(1.5,3.0);
+	}
+}
+
+
+//=========================================================
+// SetYawSpeed - allows each sequence to have a different
+// turn rate associated with it.
+//=========================================================
+float CNPC_Bullsquid::MaxYawSpeed( void )
+{
+	float flYS = 0;
+
+	switch ( GetActivity() )
+	{
+	case	ACT_WALK:			flYS = 90;	break;
+	case	ACT_RUN:			flYS = 90;	break;
+	case	ACT_IDLE:			flYS = 90;	break;
+	case	ACT_RANGE_ATTACK1:	flYS = 90;	break;
+	default:
+		flYS = 90;
+		break;
+	}
+
+	return flYS;
+}
+
+//=========================================================
+// HandleAnimEvent - catches the monster-specific messages
+// that occur when tagged animation frames are played.
+//=========================================================
+void CNPC_Bullsquid::HandleAnimEvent( animevent_t *pEvent )
+{
+	switch( pEvent->event )
+	{
+		case BSQUID_AE_SPIT:
+		{
+			if ( GetEnemy() )
+			{
+				Vector vSpitPos;
+
+				GetAttachment( "Mouth", vSpitPos );
+				
+				Vector			vTarget = GetEnemy()->GetAbsOrigin();
+				Vector			vToss;
+				CBaseEntity*	pBlocker;
+				float flGravity  = SPIT_GRAVITY;
+				ThrowLimit(vSpitPos, vTarget, flGravity, 3, Vector(0,0,0), Vector(0,0,0), GetEnemy(), &vToss, &pBlocker);
+
+				CGrenadeSpit *pGrenade = (CGrenadeSpit*)CreateNoSpawn( "grenade_spit", vSpitPos, vec3_angle, this );
+				//pGrenade->KeyValue( "velocity", vToss );
+				pGrenade->Spawn( );
+				pGrenade->SetThrower( this );
+				pGrenade->SetOwnerEntity( this );
+				pGrenade->SetSpitSize( 2 );
+				pGrenade->SetAbsVelocity( vToss );
+
+				// Tumble through the air
+				pGrenade->SetLocalAngularVelocity(
+					QAngle(
+						random->RandomFloat( -100, -500 ),
+						random->RandomFloat( -100, -500 ),
+						random->RandomFloat( -100, -500 )
+					)
+				);
+						
+				AttackSound();
+			
+				CPVSFilter filter( vSpitPos );
+				te->SpriteSpray( filter, 0.0,
+					&vSpitPos, &vToss, m_nSquidSpitSprite, 5, 10, 15 );
+			}
+		}
+		break;
+
+		case BSQUID_AE_BITE:
+		{
+		// SOUND HERE!
+			CBaseEntity *pHurt = CheckTraceHullAttack( 70, Vector(-16,-16,-16), Vector(16,16,16), sk_bullsquid_dmg_bite.GetFloat(), DMG_SLASH );
+			if ( pHurt )
+			{
+				Vector forward, up;
+				AngleVectors( GetAbsAngles(), &forward, NULL, &up );
+				pHurt->ApplyAbsVelocityImpulse( 100 * (up-forward) );
+				pHurt->SetGroundEntity( NULL );
+			}
+		}
+		break;
+
+		case BSQUID_AE_WHIP_SND:
+		{
+			EmitSound( "NPC_Bullsquid.TailWhip" );
+			break;
+		}
+
+/*
+		case BSQUID_AE_TAILWHIP:
+		{
+			CBaseEntity *pHurt = CheckTraceHullAttack( 70, Vector(-16,-16,-16), Vector(16,16,16), sk_bullsquid_dmg_whip.GetFloat(), DMG_SLASH | DMG_ALWAYSGIB );
+			if ( pHurt ) 
+			{
+				Vector right, up;
+				AngleVectors( GetAbsAngles(), NULL, &right, &up );
+
+				if ( pHurt->GetFlags() & ( FL_NPC | FL_CLIENT ) )
+					 pHurt->ViewPunch( QAngle( 20, 0, -20 ) );
+			
+				pHurt->ApplyAbsVelocityImpulse( 100 * (up+2*right) );
+			}
+		}
+		break;
+*/
+
+		case BSQUID_AE_BLINK:
+		{
+			// close eye. 
+			m_nSkin = 1;
+		}
+		break;
+
+		case BSQUID_AE_HOP:
+		{
+			float flGravity = GetCurrentGravity();
+
+			// throw the squid up into the air on this frame.
+			if ( GetFlags() & FL_ONGROUND )
+			{
+				SetGroundEntity( NULL );
+			}
+
+			// jump 40 inches into the air
+			Vector vecVel = GetAbsVelocity();
+			vecVel.z += sqrt( flGravity * 2.0 * 40 );
+			SetAbsVelocity( vecVel );
+		}
+		break;
+
+		case BSQUID_AE_THROW:
+			{
+				// squid throws its prey IF the prey is a client. 
+				CBaseEntity *pHurt = CheckTraceHullAttack( 70, Vector(-16,-16,-16), Vector(16,16,16), 0, 0 );
+
+
+				if ( pHurt )
+				{
+					pHurt->ViewPunch( QAngle(20,0,-20) );
+							
+					// screeshake transforms the viewmodel as well as the viewangle. No problems with seeing the ends of the viewmodels.
+					UTIL_ScreenShake( pHurt->GetAbsOrigin(), 25.0, 1.5, 0.7, 2, SHAKE_START );
+
+					// If the player, throw him around
+					if ( pHurt->IsPlayer())
+					{
+						Vector forward, up;
+						AngleVectors( GetLocalAngles(), &forward, NULL, &up );
+						pHurt->ApplyAbsVelocityImpulse( forward * 300 + up * 300 );
+					}
+					// If not the player see if has bullsquid throw interatcion
+					else
+					{
+						CBaseCombatCharacter *pVictim = ToBaseCombatCharacter( pHurt );
+						if (pVictim)
+						{
+							if ( pVictim->DispatchInteraction( g_interactionBullsquidThrow, NULL, this ) )
+							{
+								Vector forward, up;
+								AngleVectors( GetLocalAngles(), &forward, NULL, &up );
+								pVictim->ApplyAbsVelocityImpulse( forward * 300 + up * 250 );
+							}
+						}
+					}
+				}
+			}
+		break;
+
+		default:
+			BaseClass::HandleAnimEvent( pEvent );
+	}
+}
+
+int CNPC_Bullsquid::RangeAttack1Conditions( float flDot, float flDist )
+{
+	if ( IsMoving() && flDist >= 512 )
+	{
+		// squid will far too far behind if he stops running to spit at this distance from the enemy.
+		return ( COND_NONE );
+	}
+
+	if ( flDist > 85 && flDist <= 784 && flDot >= 0.5 && gpGlobals->curtime >= m_flNextSpitTime )
+	{
+		if ( GetEnemy() != NULL )
+		{
+			if ( fabs( GetAbsOrigin().z - GetEnemy()->GetAbsOrigin().z ) > 256 )
+			{
+				// don't try to spit at someone up really high or down really low.
+				return( COND_NONE );
+			}
+		}
+
+		if ( IsMoving() )
+		{
+			// don't spit again for a long time, resume chasing enemy.
+			m_flNextSpitTime = gpGlobals->curtime + 5;
+		}
+		else
+		{
+			// not moving, so spit again pretty soon.
+			m_flNextSpitTime = gpGlobals->curtime + 0.5;
+		}
+
+		return( COND_CAN_RANGE_ATTACK1 );
+	}
+
+	return( COND_NONE );
+}
+
+//=========================================================
+// MeleeAttack2Conditions - bullsquid is a big guy, so has a longer
+// melee range than most monsters. This is the tailwhip attack
+//=========================================================
+int CNPC_Bullsquid::MeleeAttack1Conditions( float flDot, float flDist )
+{
+	if ( GetEnemy()->m_iHealth <= sk_bullsquid_dmg_whip.GetFloat() && flDist <= 85 && flDot >= 0.7 )
+	{
+		return ( COND_CAN_MELEE_ATTACK1 );
+	}
+	
+	return( COND_NONE );
+}
+
+//=========================================================
+// MeleeAttack2Conditions - bullsquid is a big guy, so has a longer
+// melee range than most monsters. This is the bite attack.
+// this attack will not be performed if the tailwhip attack
+// is valid.
+//=========================================================
+int CNPC_Bullsquid::MeleeAttack2Conditions( float flDot, float flDist )
+{
+	if ( flDist <= 85 && flDot >= 0.7 && !HasCondition( COND_CAN_MELEE_ATTACK1 ) )		// The player & bullsquid can be as much as their bboxes 
+		 return ( COND_CAN_MELEE_ATTACK2 );
+	
+	return( COND_NONE );
+}
+
+bool CNPC_Bullsquid::FValidateHintType( CAI_Hint *pHint )
+{
+	if ( pHint->HintType() == HINT_HL1_WORLD_HUMAN_BLOOD )
+		 return true;
+
+	DevMsg( "Couldn't validate hint type" );
+
+	return false;
+}
+
+void CNPC_Bullsquid::RemoveIgnoredConditions( void )
+{
+	if ( m_flHungryTime > gpGlobals->curtime )
+		 ClearCondition( COND_SQUID_SMELL_FOOD );
+
+	if ( gpGlobals->curtime - m_flLastHurtTime <= 20 )
+	{
+		// haven't been hurt in 20 seconds, so let the squid care about stink. 
+		ClearCondition( COND_SMELL );
+	}
+
+	if ( GetEnemy() != NULL )
+	{
+		// ( Unless after a tasty headcrab, yumm ^_^ )
+		if ( FClassnameIs( GetEnemy(), "monster_headcrab" ) )
+			 ClearCondition( COND_SMELL );
+	}
+}
+
+Disposition_t CNPC_Bullsquid::IRelationType( CBaseEntity *pTarget )
+{
+	if ( gpGlobals->curtime - m_flLastHurtTime < 5 && FClassnameIs( pTarget, "monster_headcrab" ) )
+	{
+		// if squid has been hurt in the last 5 seconds, and is getting relationship for a headcrab, 
+		// tell squid to disregard crab. 
+		return D_NU;
+	}
+
+	return BaseClass::IRelationType( pTarget );
+}
+
+//=========================================================
+// TakeDamage - overridden for bullsquid so we can keep track
+// of how much time has passed since it was last injured
+//=========================================================
+int CNPC_Bullsquid::OnTakeDamage_Alive( const CTakeDamageInfo &inputInfo )
+{
+
+#if 0 //Fix later.
+
+	float flDist;
+	Vector vecApex, vOffset;
+
+	// if the squid is running, has an enemy, was hurt by the enemy, hasn't been hurt in the last 3 seconds, and isn't too close to the enemy,
+	// it will swerve. (whew).
+	if ( GetEnemy() != NULL && IsMoving() && pevAttacker == GetEnemy() && gpGlobals->curtime - m_flLastHurtTime > 3 )
+	{
+		flDist = ( GetAbsOrigin() - GetEnemy()->GetAbsOrigin() ).Length2D();
+		
+		if ( flDist > SQUID_SPRINT_DIST )
+		{
+			AI_Waypoint_t*	pRoute = GetNavigator()->GetPath()->Route();
+
+			if ( pRoute )
+			{
+				flDist = ( GetAbsOrigin() - pRoute[ pRoute->iNodeID ].vecLocation ).Length2D();// reusing flDist. 
+
+				if ( GetNavigator()->GetPath()->BuildTriangulationRoute( GetAbsOrigin(), pRoute[ pRoute->iNodeID ].vecLocation, flDist * 0.5, GetEnemy(), &vecApex, &vOffset, NAV_GROUND ) )
+				{
+					GetNavigator()->PrependWaypoint( vecApex, bits_WP_TO_DETOUR | bits_WP_DONT_SIMPLIFY );
+				}
+			}
+		}
+	}
+#endif
+
+	if ( !FClassnameIs( inputInfo.GetAttacker(), "monster_headcrab" ) )
+	{
+		// don't forget about headcrabs if it was a headcrab that hurt the squid.
+		m_flLastHurtTime = gpGlobals->curtime;
+	}
+
+	return BaseClass::OnTakeDamage_Alive( inputInfo );
+}
+
+//=========================================================
+// GetSoundInterests - returns a bit mask indicating which types
+// of sounds this monster regards. In the base class implementation,
+// monsters care about all sounds, but no scents.
+//=========================================================
+int CNPC_Bullsquid::GetSoundInterests( void )
+{
+	return	SOUND_WORLD	|
+			SOUND_COMBAT	|
+		    SOUND_CARCASS	|
+			SOUND_MEAT		|
+			SOUND_GARBAGE	|
+			SOUND_PLAYER;
+}
+
+//=========================================================
+// OnListened - monsters dig through the active sound list for
+// any sounds that may interest them. (smells, too!)
+//=========================================================
+void CNPC_Bullsquid::OnListened( void )
+{
+	AISoundIter_t iter;
+	
+	CSound *pCurrentSound;
+
+	static int conditionsToClear[] = 
+	{
+		COND_SQUID_SMELL_FOOD,
+	};
+
+	ClearConditions( conditionsToClear, ARRAYSIZE( conditionsToClear ) );
+	
+	pCurrentSound = GetSenses()->GetFirstHeardSound( &iter );
+	
+	while ( pCurrentSound )
+	{
+		// the npc cares about this sound, and it's close enough to hear.
+		int condition = COND_NONE;
+		
+		if ( !pCurrentSound->FIsSound() )
+		{
+			// if not a sound, must be a smell - determine if it's just a scent, or if it's a food scent
+			if ( pCurrentSound->m_iType & ( SOUND_MEAT | SOUND_CARCASS ) )
+			{
+				// the detected scent is a food item
+				condition = COND_SQUID_SMELL_FOOD;
+			}
+		}
+		
+		if ( condition != COND_NONE )
+			SetCondition( condition );
+
+		pCurrentSound = GetSenses()->GetNextHeardSound( &iter );
+	}
+
+	BaseClass::OnListened();
+}
+
+//========================================================
+// RunAI - overridden for bullsquid because there are things
+// that need to be checked every think.
+//========================================================
+void CNPC_Bullsquid::RunAI( void )
+{
+	// first, do base class stuff
+	BaseClass::RunAI();
+
+	if ( m_nSkin != 0 )
+	{
+		// close eye if it was open.
+		m_nSkin = 0; 
+	}
+
+	if ( random->RandomInt( 0,39 ) == 0 )
+	{
+		m_nSkin = 1;
+	}
+
+	if ( GetEnemy() != NULL && GetActivity() == ACT_RUN )
+	{
+		// chasing enemy. Sprint for last bit
+		if ( (GetAbsOrigin() - GetEnemy()->GetAbsOrigin()).Length2D() < SQUID_SPRINT_DIST )
+		{
+			m_flPlaybackRate = 1.25;
+		}
+	}
+
+}
+
+//=========================================================
+// GetSchedule 
+//=========================================================
+int CNPC_Bullsquid::SelectSchedule( void )
+{
+	switch	( m_NPCState )
+	{
+	case NPC_STATE_ALERT:
+		{
+			if ( HasCondition( COND_LIGHT_DAMAGE ) || HasCondition( COND_HEAVY_DAMAGE ) )
+			{
+				return SCHED_SQUID_HURTHOP;
+			}
+
+			if ( HasCondition( COND_SQUID_SMELL_FOOD ) )
+			{
+				CSound		*pSound;
+
+				pSound = GetBestScent();
+				
+				if ( pSound && (!FInViewCone( pSound->GetSoundOrigin() ) || !FVisible( pSound->GetSoundOrigin() )) )
+				{
+					// scent is behind or occluded
+					return SCHED_SQUID_SNIFF_AND_EAT;
+				}
+
+				// food is right out in the open. Just go get it.
+				return SCHED_SQUID_EAT;
+			}
+
+			if ( HasCondition( COND_SMELL ) )
+			{
+				// there's something stinky. 
+				CSound		*pSound;
+
+				pSound = GetBestScent();
+				if ( pSound )
+					return SCHED_SQUID_WALLOW;
+			}
+
+			break;
+		}
+	case NPC_STATE_COMBAT:
+		{
+// dead enemy
+			if ( HasCondition( COND_ENEMY_DEAD ) )
+			{
+				// call base class, all code to handle dead enemies is centralized there.
+				return BaseClass::SelectSchedule();
+			}
+
+			if ( HasCondition( COND_NEW_ENEMY ) )
+			{
+				if ( m_fCanThreatDisplay && IRelationType( GetEnemy() ) == D_HT && FClassnameIs( GetEnemy(), "monster_headcrab" ) )
+				{
+					// this means squid sees a headcrab!
+					m_fCanThreatDisplay = FALSE;// only do the headcrab dance once per lifetime.
+					return SCHED_SQUID_SEECRAB;
+				}
+				else
+				{
+					return SCHED_WAKE_ANGRY;
+				}
+			}
+
+			if ( HasCondition( COND_SQUID_SMELL_FOOD ) )
+			{
+				CSound		*pSound;
+
+				pSound = GetBestScent();
+				
+				if ( pSound && (!FInViewCone( pSound->GetSoundOrigin() ) || !FVisible( pSound->GetSoundOrigin() )) )
+				{
+					// scent is behind or occluded
+					return SCHED_SQUID_SNIFF_AND_EAT;
+				}
+
+				// food is right out in the open. Just go get it.
+				return SCHED_SQUID_EAT;
+			}
+
+			if ( HasCondition( COND_CAN_RANGE_ATTACK1 ) )
+			{
+				return SCHED_RANGE_ATTACK1;
+			}
+
+			if ( HasCondition( COND_CAN_MELEE_ATTACK1 ) )
+			{
+				return SCHED_MELEE_ATTACK1;
+			}
+
+			if ( HasCondition( COND_CAN_MELEE_ATTACK2 ) )
+			{
+				return SCHED_MELEE_ATTACK2;
+			}
+			
+			return SCHED_CHASE_ENEMY;
+
+			break;
+		}
+	}
+
+	return BaseClass::SelectSchedule();
+}
+
+//=========================================================
+// FInViewCone - returns true is the passed vector is in
+// the caller's forward view cone. The dot product is performed
+// in 2d, making the view cone infinitely tall. 
+//=========================================================
+bool CNPC_Bullsquid::FInViewCone( Vector pOrigin )
+{
+	Vector los = ( pOrigin - GetAbsOrigin() );
+
+	// do this in 2D
+	los.z = 0;
+	VectorNormalize( los );
+
+	Vector facingDir = EyeDirection2D( );
+
+	float flDot = DotProduct( los, facingDir );
+
+	if ( flDot > m_flFieldOfView )
+		return true;
+
+	return false;
+}
+
+//=========================================================
+// Start task - selects the correct activity and performs
+// any necessary calculations to start the next task on the
+// schedule.  OVERRIDDEN for bullsquid because it needs to
+// know explicitly when the last attempt to chase the enemy
+// failed, since that impacts its attack choices.
+//=========================================================
+void CNPC_Bullsquid::StartTask( const Task_t *pTask )
+{
+	switch ( pTask->iTask )
+	{
+	case TASK_MELEE_ATTACK2:
+		{
+			if (GetEnemy())
+			{
+				GrowlSound();
+
+				m_flLastAttackTime = gpGlobals->curtime;
+
+				BaseClass::StartTask( pTask );
+			}
+			break;
+		}
+	case TASK_SQUID_HOPTURN:
+		{
+			SetActivity( ACT_HOP );
+			
+			if ( GetEnemy() )
+			{
+				Vector	vecFacing = ( GetEnemy()->GetAbsOrigin() - GetAbsOrigin() );
+				VectorNormalize( vecFacing );
+
+				GetMotor()->SetIdealYaw( vecFacing );
+			}
+
+			break;
+		}
+	case TASK_SQUID_EAT:
+		{
+			m_flHungryTime = gpGlobals->curtime + pTask->flTaskData;
+			TaskComplete();
+			break;
+		}
+	default:
+		{
+			BaseClass::StartTask( pTask );
+			break;
+		}
+	}
+}
+
+//=========================================================
+// RunTask
+//=========================================================
+void CNPC_Bullsquid::RunTask( const Task_t *pTask )
+{
+	switch ( pTask->iTask )
+	{
+	case TASK_SQUID_HOPTURN:
+		{
+			if ( GetEnemy() )
+			{
+				Vector	vecFacing = ( GetEnemy()->GetAbsOrigin() - GetAbsOrigin() );
+				VectorNormalize( vecFacing );
+				GetMotor()->SetIdealYaw( vecFacing );
+			}
+
+			if ( IsSequenceFinished() )
+			{
+				TaskComplete(); 
+			}
+			break;
+		}
+	default:
+		{
+			BaseClass::RunTask( pTask );
+			break;
+		}
+	}
+}
+
+//=========================================================
+// GetIdealState - Overridden for Bullsquid to deal with
+// the feature that makes it lose interest in headcrabs for 
+// a while if something injures it. 
+//=========================================================
+NPC_STATE CNPC_Bullsquid::SelectIdealState( void )
+{
+	// If no schedule conditions, the new ideal state is probably the reason we're in here.
+	switch ( m_NPCState )
+	{
+		case NPC_STATE_COMBAT:
+		{
+			// COMBAT goes to ALERT upon death of enemy
+			if ( GetEnemy() != NULL && ( HasCondition( COND_LIGHT_DAMAGE ) || HasCondition( COND_HEAVY_DAMAGE ) ) && FClassnameIs( GetEnemy(), "monster_headcrab" ) )
+			{
+				// if the squid has a headcrab enemy and something hurts it, it's going to forget about the crab for a while.
+				SetEnemy( NULL );
+				return NPC_STATE_ALERT;
+			}
+			break;
+		}
+	}
+
+	return BaseClass::SelectIdealState();
+}
+
+
+//------------------------------------------------------------------------------
+//
+// Schedules
+//
+//------------------------------------------------------------------------------
+
+AI_BEGIN_CUSTOM_NPC( npc_bullsquid, CNPC_Bullsquid )
+
+	DECLARE_TASK( TASK_SQUID_HOPTURN )
+	DECLARE_TASK( TASK_SQUID_EAT )
+
+	DECLARE_CONDITION( COND_SQUID_SMELL_FOOD )
+
+	DECLARE_ACTIVITY( ACT_SQUID_EXCITED )
+	DECLARE_ACTIVITY( ACT_SQUID_EAT )
+	DECLARE_ACTIVITY( ACT_SQUID_DETECT_SCENT )
+	DECLARE_ACTIVITY( ACT_SQUID_INSPECT_FLOOR )
+
+	DECLARE_INTERACTION( g_interactionBullsquidThrow )
+
+	//=========================================================
+	// > SCHED_SQUID_HURTHOP
+	//=========================================================
+	DEFINE_SCHEDULE
+	(
+		SCHED_SQUID_HURTHOP,
+	
+		"	Tasks"
+		"		TASK_STOP_MOVING			0"
+		"		TASK_SOUND_WAKE				0"
+		"		TASK_SQUID_HOPTURN			0"
+		"		TASK_FACE_ENEMY				0"
+		"	"
+		"	Interrupts"
+	)
+	
+	//=========================================================
+	// > SCHED_SQUID_SEECRAB
+	//=========================================================
+	DEFINE_SCHEDULE
+	(
+		SCHED_SQUID_SEECRAB,
+	
+		"	Tasks"
+		"		TASK_STOP_MOVING			0"
+		"		TASK_SOUND_WAKE				0"
+		"		TASK_PLAY_SEQUENCE			ACTIVITY:ACT_SQUID_EXCITED"
+		"		TASK_FACE_ENEMY				0"
+		"	"
+		"	Interrupts"
+		"		COND_LIGHT_DAMAGE"
+		"		COND_HEAVY_DAMAGE"
+	)
+	
+	//=========================================================
+	// > SCHED_SQUID_EAT
+	//=========================================================
+	DEFINE_SCHEDULE
+	(
+		SCHED_SQUID_EAT,
+	
+		"	Tasks"
+		"		TASK_STOP_MOVING					0"
+		"		TASK_SQUID_EAT						10"
+		"		TASK_STORE_LASTPOSITION				0"
+		"		TASK_GET_PATH_TO_BESTSCENT			0"
+		"		TASK_WALK_PATH						0"
+		"		TASK_WAIT_FOR_MOVEMENT				0"
+		"		TASK_PLAY_SEQUENCE					ACTIVITY:ACT_SQUID_EAT"
+		"		TASK_PLAY_SEQUENCE					ACTIVITY:ACT_SQUID_EAT"
+		"		TASK_PLAY_SEQUENCE					ACTIVITY:ACT_SQUID_EAT"
+		"		TASK_SQUID_EAT						50"
+		"		TASK_GET_PATH_TO_LASTPOSITION		0"
+		"		TASK_WALK_PATH						0"
+		"		TASK_WAIT_FOR_MOVEMENT				0"
+		"		TASK_CLEAR_LASTPOSITION				0"
+		"	"
+		"	Interrupts"
+		"		COND_LIGHT_DAMAGE"
+		"		COND_HEAVY_DAMAGE"
+		"		COND_NEW_ENEMY"
+		"		COND_SMELL"
+	)
+	
+	//=========================================================
+	// > SCHED_SQUID_SNIFF_AND_EAT
+	//=========================================================
+	DEFINE_SCHEDULE
+	(
+		SCHED_SQUID_SNIFF_AND_EAT,
+	
+		"	Tasks"
+		"		TASK_STOP_MOVING					0"
+		"		TASK_SQUID_EAT						10"
+		"		TASK_PLAY_SEQUENCE					ACTIVITY:ACT_SQUID_DETECT_SCENT"
+		"		TASK_STORE_LASTPOSITION				0"
+		"		TASK_GET_PATH_TO_BESTSCENT			0"
+		"		TASK_WALK_PATH						0"
+		"		TASK_WAIT_FOR_MOVEMENT				0"
+		"		TASK_PLAY_SEQUENCE					ACTIVITY:ACT_SQUID_EAT"
+		"		TASK_PLAY_SEQUENCE					ACTIVITY:ACT_SQUID_EAT"
+		"		TASK_PLAY_SEQUENCE					ACTIVITY:ACT_SQUID_EAT"
+		"		TASK_SQUID_EAT						50"
+		"		TASK_GET_PATH_TO_LASTPOSITION		0"
+		"		TASK_WALK_PATH						0"
+		"		TASK_WAIT_FOR_MOVEMENT				0"
+		"		TASK_CLEAR_LASTPOSITION				0"
+		"	"
+		"	Interrupts"
+		"		COND_LIGHT_DAMAGE"
+		"		COND_HEAVY_DAMAGE"
+		"		COND_NEW_ENEMY"
+		"		COND_SMELL"
+	)
+	
+	//=========================================================
+	// > SCHED_SQUID_WALLOW
+	//=========================================================
+	DEFINE_SCHEDULE
+	(
+		SCHED_SQUID_WALLOW,
+	
+		"	Tasks"
+		"		TASK_STOP_MOVING				0"
+		"		TASK_SQUID_EAT					10"
+		"		TASK_STORE_LASTPOSITION			0"
+		"		TASK_GET_PATH_TO_BESTSCENT		0"
+		"		TASK_WALK_PATH					0"
+		"		TASK_WAIT_FOR_MOVEMENT			0"
+		"		TASK_PLAY_SEQUENCE				ACTIVITY:ACT_SQUID_INSPECT_FLOOR"
+		"		TASK_SQUID_EAT					50"
+		"		TASK_GET_PATH_TO_LASTPOSITION	0"
+		"		TASK_WALK_PATH					0"
+		"		TASK_WAIT_FOR_MOVEMENT			0"
+		"		TASK_CLEAR_LASTPOSITION			0"
+		"	"
+		"	Interrupts"
+		"		COND_LIGHT_DAMAGE"
+		"		COND_HEAVY_DAMAGE"
+		"		COND_NEW_ENEMY"
+	)
+	
+AI_END_CUSTOM_NPC()