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game/shared/tf/tf_weapon_grenade_gas.cpp

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+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: TF Gas Grenade.
+//
+//=============================================================================//
+#include "cbase.h"
+#include "tf_weaponbase.h"
+#include "tf_gamerules.h"
+#include "npcevent.h"
+#include "engine/IEngineSound.h"
+#include "tf_weapon_grenade_gas.h"
+
+// Server specific.
+#ifdef GAME_DLL
+#include "tf_player.h"
+#include "items.h"
+#include "tf_weaponbase_grenadeproj.h"
+#include "soundent.h"
+#include "KeyValues.h"
+#endif
+
+#define GRENADE_GAS_TIMER	3.0f //Seconds
+
+//=============================================================================
+//
+// TF Gas Grenade tables.
+//
+
+IMPLEMENT_NETWORKCLASS_ALIASED( TFGrenadeGas, DT_TFGrenadeGas )
+
+BEGIN_NETWORK_TABLE( CTFGrenadeGas, DT_TFGrenadeGas )
+END_NETWORK_TABLE()
+
+BEGIN_PREDICTION_DATA( CTFGrenadeGas )
+END_PREDICTION_DATA()
+
+LINK_ENTITY_TO_CLASS( tf_weapon_grenade_gas, CTFGrenadeGas );
+PRECACHE_WEAPON_REGISTER( tf_weapon_grenade_gas );
+
+//=============================================================================
+//
+// TF Gas Grenade functions.
+//
+
+// Server specific.
+#ifdef GAME_DLL
+
+BEGIN_DATADESC( CTFGrenadeGas )
+END_DATADESC()
+
+//-----------------------------------------------------------------------------
+// Purpose:
+//-----------------------------------------------------------------------------
+CTFWeaponBaseGrenadeProj *CTFGrenadeGas::EmitGrenade( Vector vecSrc, QAngle vecAngles, Vector vecVel, 
+							        AngularImpulse angImpulse, CBasePlayer *pPlayer, float flTime, int iflags )
+{
+	return CTFGrenadeGasProjectile::Create( vecSrc, vecAngles, vecVel, angImpulse, 
+		                                pPlayer, GetTFWpnData(), flTime );
+}
+
+#endif
+
+//=============================================================================
+//
+// TF Gas Grenade Projectile functions (Server specific).
+//
+#ifdef GAME_DLL
+
+#define GRENADE_MODEL "models/weapons/w_models/w_grenade_gas.mdl"
+
+LINK_ENTITY_TO_CLASS( tf_weapon_grenade_gas_projectile, CTFGrenadeGasProjectile );
+PRECACHE_WEAPON_REGISTER( tf_weapon_grenade_gas_projectile );
+
+
+BEGIN_DATADESC( CTFGrenadeGasProjectile )
+	DEFINE_THINKFUNC( Think_Emit ),
+	DEFINE_THINKFUNC( Think_Fade ),
+END_DATADESC()
+//-----------------------------------------------------------------------------
+// Purpose:
+//-----------------------------------------------------------------------------
+CTFGrenadeGasProjectile* CTFGrenadeGasProjectile::Create( const Vector &position, const QAngle &angles, 
+																const Vector &velocity, const AngularImpulse &angVelocity, 
+																CBaseCombatCharacter *pOwner, const CTFWeaponInfo &weaponInfo, float timer, int iFlags )
+{
+	CTFGrenadeGasProjectile *pGrenade = static_cast<CTFGrenadeGasProjectile*>( CTFWeaponBaseGrenadeProj::Create( "tf_weapon_grenade_gas_projectile", position, angles, velocity, angVelocity, pOwner, weaponInfo, timer, iFlags ) );
+	if ( pGrenade )
+	{
+		pGrenade->ApplyLocalAngularVelocityImpulse( angVelocity );	
+	}
+
+	return pGrenade;
+}
+
+//-----------------------------------------------------------------------------
+// Purpose:
+//-----------------------------------------------------------------------------
+void CTFGrenadeGasProjectile::Spawn()
+{
+	SetModel( GRENADE_MODEL );
+
+	BaseClass::Spawn();
+
+	m_hGasEffect = NULL;
+}
+
+CTFGrenadeGasProjectile::~CTFGrenadeGasProjectile()
+{
+	if ( m_hGasEffect.Get() )
+	{
+		UTIL_Remove( m_hGasEffect );
+	}
+}
+
+//-----------------------------------------------------------------------------
+// Purpose:
+//-----------------------------------------------------------------------------
+void CTFGrenadeGasProjectile::Precache()
+{
+	PrecacheModel( GRENADE_MODEL );
+	PrecacheParticleSystem( "spy_gasgrenade" );
+	BaseClass::Precache();
+}
+
+//-----------------------------------------------------------------------------
+// Purpose:
+//-----------------------------------------------------------------------------
+void CTFGrenadeGasProjectile::BounceSound( void )
+{
+	EmitSound( "Weapon_Grenade_Gas.Bounce" );
+}
+
+//-----------------------------------------------------------------------------
+// Purpose:
+//-----------------------------------------------------------------------------
+void CTFGrenadeGasProjectile::DetonateThink( void )
+{
+	// if we're past the detonate time but still moving, delay the detonate
+	if ( gpGlobals->curtime > GetDetonateTime() && VPhysicsGetObject() )
+	{
+		Vector vel;
+		VPhysicsGetObject()->GetVelocity( &vel, NULL );
+
+		if ( vel.Length() > 35.0 )
+		{
+			SetTimer( gpGlobals->curtime + 0.5 );
+		}
+	}
+
+	BaseClass::DetonateThink();
+}
+
+//-----------------------------------------------------------------------------
+// Purpose:
+//-----------------------------------------------------------------------------
+void CTFGrenadeGasProjectile::Detonate()
+{
+	if ( ShouldNotDetonate() )
+	{
+		RemoveGrenade();
+		return;
+	}
+
+	// start emitting gas
+	VPhysicsGetObject()->EnableMotion( false );
+
+	m_hGasEffect = ( CTFGasGrenadeEffect * )CreateEntityByName("tf_gas_grenade_effect");
+	CBaseEntity *pGasEffect = m_hGasEffect.Get();
+	if ( pGasEffect )
+	{	
+		DispatchSpawn( pGasEffect );
+		pGasEffect->SetAbsOrigin( GetAbsOrigin() );
+	}
+
+	EmitSound( "BaseSmokeEffect.Sound" );
+
+	// damage / hallucination effect in waves
+	m_nPulses = 20;
+
+	SetThink( &CTFGrenadeGasProjectile::Think_Emit );
+	SetNextThink( gpGlobals->curtime + 0.1f );
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: Emit gas pulses
+//-----------------------------------------------------------------------------
+void CTFGrenadeGasProjectile::Think_Emit( void )
+{
+	Vector vecOrigin = GetAbsOrigin();
+	float flDamage = 10;
+	CTakeDamageInfo info( this, GetThrower(), vec3_origin, vecOrigin, flDamage, DMG_NERVEGAS | DMG_PREVENT_PHYSICS_FORCE );
+
+	CBaseEntity* pEntity = NULL;
+	while ( ( pEntity = gEntList.FindEntityInSphere( pEntity, vecOrigin, TF_HALLUCINATION_RADIUS ) ) != NULL )
+	{
+		// check for valid player
+		if ( !pEntity->IsPlayer() )
+			continue;
+
+		pEntity->TakeDamage( info );
+	}
+
+	m_nPulses--;
+
+	if ( m_nPulses <= 0 )
+	{
+		// Fade out
+		SetThink( &CTFGrenadeGasProjectile::Think_Fade );
+	}
+
+	SetNextThink( gpGlobals->curtime + 0.75 );
+}
+
+//-----------------------------------------------------------------------------
+// Fade the projectile out over time before making it disappear
+//-----------------------------------------------------------------------------
+void CTFGrenadeGasProjectile::Think_Fade()
+{
+	color32 c = GetRenderColor();
+	c.a -= 1;
+	SetRenderColor( c.r, c.b, c.g, c.a );
+
+	if ( !c.a )
+	{
+		UTIL_Remove( this );
+	}
+
+	SetNextThink( gpGlobals->curtime );
+}
+
+#endif
+
+
+IMPLEMENT_NETWORKCLASS_ALIASED( TFGasGrenadeEffect, DT_TFGasGrenadeEffect )
+
+BEGIN_NETWORK_TABLE(CTFGasGrenadeEffect, DT_TFGasGrenadeEffect )
+END_NETWORK_TABLE()
+
+#ifndef CLIENT_DLL
+	LINK_ENTITY_TO_CLASS( tf_gas_grenade_effect, CTFGasGrenadeEffect );
+#endif
+
+#ifndef CLIENT_DLL
+
+	int CTFGasGrenadeEffect::UpdateTransmitState( void )
+	{
+		return SetTransmitState( FL_EDICT_PVSCHECK );
+	}
+
+#else
+
+	void CTFGasGrenadeEffect::OnDataChanged( DataUpdateType_t updateType )
+	{
+		if ( updateType == DATA_UPDATE_CREATED && m_pGasEffect == NULL )
+		{
+			m_pGasEffect = ParticleProp()->Create( "spy_gasgrenade", PATTACH_ABSORIGIN );
+		}
+	}
+
+#endif // CLIENT_DLL