1 files changed, 284 insertions, 0 deletions
diff --git a/game/server/hl2/grenade_spit.cpp b/game/server/hl2/grenade_spit.cpp
new file mode 100644
index 0000000..4b713e6
--- /dev/null
+++ b/game/server/hl2/grenade_spit.cpp
@@ -0,0 +1,284 @@
+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+// $Workfile:     $
+// $Date:         $
+// $NoKeywords: $
+//=============================================================================//
+
+#include "cbase.h"
+#include "grenade_spit.h"
+#include "soundent.h"
+#include "decals.h"
+#include "smoke_trail.h"
+#include "hl2_shareddefs.h"
+#include "vstdlib/random.h"
+#include "engine/IEngineSound.h"
+#include "particle_parse.h"
+#include "particle_system.h"
+#include "soundenvelope.h"
+#include "ai_utils.h"
+#include "te_effect_dispatch.h"
+
+// memdbgon must be the last include file in a .cpp file!!!
+#include "tier0/memdbgon.h"
+
+ConVar    sk_antlion_worker_spit_grenade_dmg		  ( "sk_antlion_worker_spit_grenade_dmg", "20", FCVAR_NONE, "Total damage done by an individual antlion worker loogie.");
+ConVar	  sk_antlion_worker_spit_grenade_radius		  ( "sk_antlion_worker_spit_grenade_radius","40", FCVAR_NONE, "Radius of effect for an antlion worker spit grenade.");
+ConVar	  sk_antlion_worker_spit_grenade_poison_ratio ( "sk_antlion_worker_spit_grenade_poison_ratio","0.3", FCVAR_NONE, "Percentage of an antlion worker's spit damage done as poison (which regenerates)"); 
+
+LINK_ENTITY_TO_CLASS( grenade_spit, CGrenadeSpit );
+
+BEGIN_DATADESC( CGrenadeSpit )
+
+	DEFINE_FIELD( m_bPlaySound, FIELD_BOOLEAN ),
+
+	// Function pointers
+	DEFINE_ENTITYFUNC( GrenadeSpitTouch ),
+
+END_DATADESC()
+
+CGrenadeSpit::CGrenadeSpit( void ) : m_bPlaySound( true ), m_pHissSound( NULL )
+{
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+//-----------------------------------------------------------------------------
+void CGrenadeSpit::Spawn( void )
+{
+	Precache( );
+	SetSolid( SOLID_BBOX );
+	SetMoveType( MOVETYPE_FLYGRAVITY );
+	SetSolidFlags( FSOLID_NOT_STANDABLE );
+
+	SetModel( "models/spitball_large.mdl" );
+	UTIL_SetSize( this, vec3_origin, vec3_origin );
+
+	SetUse( &CBaseGrenade::DetonateUse );
+	SetTouch( &CGrenadeSpit::GrenadeSpitTouch );
+	SetNextThink( gpGlobals->curtime + 0.1f );
+
+	m_flDamage		= sk_antlion_worker_spit_grenade_dmg.GetFloat();
+	m_DmgRadius		= sk_antlion_worker_spit_grenade_radius.GetFloat();
+	m_takedamage	= DAMAGE_NO;
+	m_iHealth		= 1;
+
+	SetGravity( UTIL_ScaleForGravity( SPIT_GRAVITY ) );
+	SetFriction( 0.8f );
+
+	SetCollisionGroup( HL2COLLISION_GROUP_SPIT );
+
+	AddEFlags( EFL_FORCE_CHECK_TRANSMIT );
+
+	// We're self-illuminating, so we don't take or give shadows
+	AddEffects( EF_NOSHADOW|EF_NORECEIVESHADOW );
+
+	// Create the dust effect in place
+	m_hSpitEffect = (CParticleSystem *) CreateEntityByName( "info_particle_system" );
+	if ( m_hSpitEffect != NULL )
+	{
+		// Setup our basic parameters
+		m_hSpitEffect->KeyValue( "start_active", "1" );
+		m_hSpitEffect->KeyValue( "effect_name", "antlion_spit_trail" );
+		m_hSpitEffect->SetParent( this );
+		m_hSpitEffect->SetLocalOrigin( vec3_origin );
+		DispatchSpawn( m_hSpitEffect );
+		if ( gpGlobals->curtime > 0.5f )
+			m_hSpitEffect->Activate();
+	}
+}
+
+
+void CGrenadeSpit::SetSpitSize( int nSize )
+{
+	switch (nSize)
+	{
+		case SPIT_LARGE:
+		{
+			m_bPlaySound = true;
+			SetModel( "models/spitball_large.mdl" );
+			break;
+		}
+		case SPIT_MEDIUM:
+		{
+			m_bPlaySound = true;
+			m_flDamage *= 0.5f;
+			SetModel( "models/spitball_medium.mdl" );
+			break;
+		}
+		case SPIT_SMALL:
+		{
+			m_bPlaySound = false;
+			m_flDamage *= 0.25f;
+			SetModel( "models/spitball_small.mdl" );
+			break;
+		}
+	}
+}
+
+void CGrenadeSpit::Event_Killed( const CTakeDamageInfo &info )
+{
+	Detonate( );
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: Handle spitting
+//-----------------------------------------------------------------------------
+void CGrenadeSpit::GrenadeSpitTouch( CBaseEntity *pOther )
+{
+	if ( pOther->IsSolidFlagSet(FSOLID_VOLUME_CONTENTS | FSOLID_TRIGGER) )
+	{
+		// Some NPCs are triggers that can take damage (like antlion grubs). We should hit them.
+		if ( ( pOther->m_takedamage == DAMAGE_NO ) || ( pOther->m_takedamage == DAMAGE_EVENTS_ONLY ) )
+			return;
+	}
+
+	// Don't hit other spit
+	if ( pOther->GetCollisionGroup() == HL2COLLISION_GROUP_SPIT )
+		return;
+
+	// We want to collide with water
+	const trace_t *pTrace = &CBaseEntity::GetTouchTrace();
+
+	// copy out some important things about this trace, because the first TakeDamage
+	// call below may cause another trace that overwrites the one global pTrace points
+	// at.
+	bool bHitWater = ( ( pTrace->contents & CONTENTS_WATER ) != 0 );
+	CBaseEntity *const pTraceEnt = pTrace->m_pEnt;
+	const Vector tracePlaneNormal = pTrace->plane.normal;
+
+	if ( bHitWater )
+	{
+		// Splash!
+		CEffectData data;
+		data.m_fFlags = 0;
+		data.m_vOrigin = pTrace->endpos;
+		data.m_vNormal = Vector( 0, 0, 1 );
+		data.m_flScale = 8.0f;
+
+		DispatchEffect( "watersplash", data );
+	}
+	else
+	{
+		// Make a splat decal
+		trace_t *pNewTrace = const_cast<trace_t*>( pTrace );
+		UTIL_DecalTrace( pNewTrace, "BeerSplash" );
+	}
+
+	// Part normal damage, part poison damage
+	float poisonratio = sk_antlion_worker_spit_grenade_poison_ratio.GetFloat();
+
+	// Take direct damage if hit
+	// NOTE: assume that pTrace is invalidated from this line forward!
+	if ( pTraceEnt )
+	{
+		pTraceEnt->TakeDamage( CTakeDamageInfo( this, GetThrower(), m_flDamage * (1.0f-poisonratio), DMG_ACID ) );
+		pTraceEnt->TakeDamage( CTakeDamageInfo( this, GetThrower(), m_flDamage * poisonratio, DMG_POISON ) );
+	}
+
+	CSoundEnt::InsertSound( SOUND_DANGER, GetAbsOrigin(), m_DmgRadius * 2.0f, 0.5f, GetThrower() );
+
+	QAngle vecAngles;
+	VectorAngles( tracePlaneNormal, vecAngles );
+	
+	if ( pOther->IsPlayer() || bHitWater )
+	{
+		// Do a lighter-weight effect if we just hit a player
+		DispatchParticleEffect( "antlion_spit_player", GetAbsOrigin(), vecAngles );
+	}
+	else
+	{
+		DispatchParticleEffect( "antlion_spit", GetAbsOrigin(), vecAngles );
+	}
+
+	Detonate();
+}
+
+void CGrenadeSpit::Detonate(void)
+{
+	m_takedamage = DAMAGE_NO;
+
+	EmitSound( "GrenadeSpit.Hit" );	
+
+	// Stop our hissing sound
+	if ( m_pHissSound != NULL )
+	{
+		CSoundEnvelopeController::GetController().SoundDestroy( m_pHissSound );
+		m_pHissSound = NULL;
+	}
+
+	if ( m_hSpitEffect )
+	{
+		UTIL_Remove( m_hSpitEffect );
+	}
+
+	UTIL_Remove( this );
+}
+
+void CGrenadeSpit::InitHissSound( void )
+{
+	if ( m_bPlaySound == false )
+		return;
+
+	CSoundEnvelopeController &controller = CSoundEnvelopeController::GetController();
+	if ( m_pHissSound == NULL )
+	{
+		CPASAttenuationFilter filter( this );
+		m_pHissSound = controller.SoundCreate( filter, entindex(), "NPC_Antlion.PoisonBall" );
+		controller.Play( m_pHissSound, 1.0f, 100 );
+	}
+}
+
+void CGrenadeSpit::Think( void )
+{
+	InitHissSound();
+	if ( m_pHissSound == NULL )
+		return;
+	
+	// Add a doppler effect to the balls as they travel
+	CBaseEntity *pPlayer = AI_GetSinglePlayer();
+	if ( pPlayer != NULL )
+	{
+		Vector dir;
+		VectorSubtract( pPlayer->GetAbsOrigin(), GetAbsOrigin(), dir );
+		VectorNormalize(dir);
+
+		float velReceiver = DotProduct( pPlayer->GetAbsVelocity(), dir );
+		float velTransmitter = -DotProduct( GetAbsVelocity(), dir );
+		
+		// speed of sound == 13049in/s
+		int iPitch = 100 * ((1 - velReceiver / 13049) / (1 + velTransmitter / 13049));
+
+		// clamp pitch shifts
+		if ( iPitch > 250 )
+		{
+			iPitch = 250;
+		}
+		if ( iPitch < 50 )
+		{
+			iPitch = 50;
+		}
+
+		// Set the pitch we've calculated
+		CSoundEnvelopeController::GetController().SoundChangePitch( m_pHissSound, iPitch, 0.1f );
+	}
+
+	// Set us up to think again shortly
+	SetNextThink( gpGlobals->curtime + 0.05f );
+}
+
+void CGrenadeSpit::Precache( void )
+{
+	// m_nSquidSpitSprite = PrecacheModel("sprites/greenglow1.vmt");// client side spittle.
+
+	PrecacheModel( "models/spitball_large.mdl" ); 
+	PrecacheModel("models/spitball_medium.mdl"); 
+	PrecacheModel("models/spitball_small.mdl"); 
+
+	PrecacheScriptSound( "GrenadeSpit.Hit" );
+
+	PrecacheParticleSystem( "antlion_spit_player" );
+	PrecacheParticleSystem( "antlion_spit" );
+}