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game/server/env_particlescript.cpp

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+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+// $NoKeywords: $
+//=============================================================================//
+
+#include "cbase.h"
+#include "baseanimating.h"
+#include "SkyCamera.h"
+#include "studio.h"
+
+// memdbgon must be the last include file in a .cpp file!!!
+#include "tier0/memdbgon.h"
+
+// HACK HACK:  Must match cl_dll/cl_animevent.h!!!!
+#define CL_EVENT_SPRITEGROUP_CREATE		6002
+
+//-----------------------------------------------------------------------------
+// An entity which emits other entities at points 
+//-----------------------------------------------------------------------------
+class CEnvParticleScript : public CBaseAnimating
+{
+public:
+	DECLARE_CLASS( CEnvParticleScript, CBaseAnimating );
+	DECLARE_SERVERCLASS();
+	DECLARE_DATADESC();
+
+	CEnvParticleScript();
+
+	virtual void Precache();
+	virtual void Spawn();
+	virtual void Activate();
+	virtual int  UpdateTransmitState();
+
+	void InputSetSequence( inputdata_t &inputdata );
+
+private:
+
+	void	PrecacheAnimationEventMaterials();
+
+	CNetworkVar( float, m_flSequenceScale );
+};
+
+
+//-----------------------------------------------------------------------------
+// Save/load 
+//-----------------------------------------------------------------------------
+BEGIN_DATADESC( CEnvParticleScript )
+
+	DEFINE_FIELD( m_flSequenceScale, FIELD_FLOAT ),
+	
+	// Inputs
+	DEFINE_INPUTFUNC( FIELD_STRING, "SetSequence", InputSetSequence ),
+
+END_DATADESC()
+
+LINK_ENTITY_TO_CLASS( env_particlescript, CEnvParticleScript );
+
+
+//-----------------------------------------------------------------------------
+// Datatable
+//-----------------------------------------------------------------------------
+IMPLEMENT_SERVERCLASS_ST( CEnvParticleScript, DT_EnvParticleScript )
+	SendPropFloat(SENDINFO(m_flSequenceScale), 0, SPROP_NOSCALE),
+END_SEND_TABLE()
+
+
+//-----------------------------------------------------------------------------
+// Constructor
+//-----------------------------------------------------------------------------
+CEnvParticleScript::CEnvParticleScript()
+{
+	UseClientSideAnimation();
+}
+
+
+void CEnvParticleScript::PrecacheAnimationEventMaterials()
+{
+	CStudioHdr *hdr = GetModelPtr();
+	if ( hdr )
+	{
+		int numseq = hdr->GetNumSeq();
+		for ( int i = 0; i < numseq; ++i )
+		{
+			mstudioseqdesc_t& seqdesc = hdr->pSeqdesc( i );
+			int ecount = seqdesc.numevents;
+			for ( int j = 0 ; j < ecount; ++j )
+			{
+				const mstudioevent_t* event = seqdesc.pEvent( j );
+				if ( event->event == CL_EVENT_SPRITEGROUP_CREATE )
+				{
+					char pAttachmentName[256];
+					char pSpriteName[256];
+					int nArgs = sscanf( event->pszOptions(), "%255s %255s", pAttachmentName, pSpriteName );
+					if ( nArgs == 2 )
+					{
+						PrecacheMaterial( pSpriteName );
+					}
+				}
+			}
+		}
+	}
+}
+
+//-----------------------------------------------------------------------------
+// Precache
+//-----------------------------------------------------------------------------
+void CEnvParticleScript::Precache()
+{
+	BaseClass::Precache();
+	PrecacheModel( STRING( GetModelName() ) );
+	
+	// We need a model for its animation sequences even though we don't render it
+	SetModel( STRING( GetModelName() ) );
+
+	PrecacheAnimationEventMaterials();
+}
+
+
+//-----------------------------------------------------------------------------
+// Spawn
+//-----------------------------------------------------------------------------
+void CEnvParticleScript::Spawn()
+{
+	Precache();
+	BaseClass::Spawn();
+	AddEffects( EF_NOSHADOW );
+	// We need a model for its animation sequences even though we don't render it
+	SetModel( STRING( GetModelName() ) );
+}
+
+
+//-----------------------------------------------------------------------------
+// Activate
+//-----------------------------------------------------------------------------
+void CEnvParticleScript::Activate()
+{
+	BaseClass::Activate();
+
+	DetectInSkybox();
+	CSkyCamera *pCamera = GetEntitySkybox();
+	if ( pCamera )
+	{
+		float flSkyboxScale = pCamera->m_skyboxData.scale;
+		if ( flSkyboxScale == 0.0f )
+		{
+			flSkyboxScale = 1.0f;
+		}
+
+		m_flSequenceScale = flSkyboxScale;
+	}
+	else
+	{
+		m_flSequenceScale = 1.0f;
+	}
+
+	m_flPlaybackRate = 1.0f;
+}
+
+//-----------------------------------------------------------------------------
+// Should we transmit it to the client?
+//-----------------------------------------------------------------------------
+int CEnvParticleScript::UpdateTransmitState()
+{
+	if ( IsEffectActive( EF_NODRAW ) )
+	{
+		return SetTransmitState( FL_EDICT_DONTSEND );
+	}
+
+	if ( IsEFlagSet( EFL_IN_SKYBOX ) )
+	{
+		return SetTransmitState( FL_EDICT_ALWAYS );
+	}
+
+	return SetTransmitState( FL_EDICT_PVSCHECK );
+}
+
+
+//-----------------------------------------------------------------------------
+// Purpose: Input that sets the sequence of the entity
+//-----------------------------------------------------------------------------
+void CEnvParticleScript::InputSetSequence( inputdata_t &inputdata )
+{
+	if ( inputdata.value.StringID() != NULL_STRING )
+	{
+		int nSequence = LookupSequence( STRING( inputdata.value.StringID() ) );
+		if ( nSequence != ACT_INVALID )
+		{
+			SetSequence( nSequence );
+		}
+	}
+}