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game/client/tf2/c_obj_empgenerator.cpp

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+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+// $NoKeywords: $
+//=============================================================================//
+#include "cbase.h"
+#include "hud.h"
+#include "c_baseobject.h"
+#include "particles_simple.h"
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+//-----------------------------------------------------------------------------
+class C_ObjectEMPGenerator : public C_BaseObject
+{
+	DECLARE_CLASS( C_ObjectEMPGenerator, C_BaseObject );
+public:
+	DECLARE_CLIENTCLASS();
+
+	C_ObjectEMPGenerator();
+
+	virtual void	OnDataChanged( DataUpdateType_t updateType );
+	virtual void	ClientThink( void );
+
+private:
+	CSmartPtr<CSimpleEmitter>	m_pEmitter;
+	PMaterialHandle				m_hParticleMaterial;
+	TimedEvent					m_ParticleEvent;
+
+private:
+	C_ObjectEMPGenerator( const C_ObjectEMPGenerator & ); // not defined, not accessible
+};
+
+IMPLEMENT_CLIENTCLASS_DT(C_ObjectEMPGenerator, DT_ObjectEMPGenerator, CObjectEMPGenerator)
+END_RECV_TABLE()
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+//-----------------------------------------------------------------------------
+C_ObjectEMPGenerator::C_ObjectEMPGenerator()
+{
+	m_ParticleEvent.Init( 300 ); 
+}
+
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+//-----------------------------------------------------------------------------
+void C_ObjectEMPGenerator::OnDataChanged( DataUpdateType_t updateType )
+{
+	BaseClass::OnDataChanged( updateType );
+
+	if ( updateType == DATA_UPDATE_CREATED )
+	{
+		m_pEmitter = CSimpleEmitter::Create( "C_ObjectEMPGenerator" );
+		m_hParticleMaterial = m_pEmitter->GetPMaterial( "sprites/chargeball" );
+	}
+}
+
+//-----------------------------------------------------------------------------
+// Purpose: 
+//-----------------------------------------------------------------------------
+void C_ObjectEMPGenerator::ClientThink( void )
+{
+	// Add particles at the target.
+	float flCur = gpGlobals->frametime;
+	while ( m_ParticleEvent.NextEvent( flCur ) )
+	{
+		Vector vPos = WorldSpaceCenter( );
+		Vector vOffset = RandomVector( -1, 1 );
+		VectorNormalize( vOffset );
+		vPos += vOffset * RandomFloat( 0, 50 );
+		
+		SimpleParticle *pParticle = m_pEmitter->AddSimpleParticle( m_hParticleMaterial, vPos );
+		if ( pParticle )
+		{
+			// Move the points along the path.
+			pParticle->m_vecVelocity.Init();
+			pParticle->m_flRoll = 0;
+			pParticle->m_flRollDelta = 0;
+			pParticle->m_flDieTime = 0.4f;
+			pParticle->m_flLifetime = 0;
+			pParticle->m_uchColor[0] = 255; 
+			pParticle->m_uchColor[1] = 255;
+			pParticle->m_uchColor[2] = 255;
+			pParticle->m_uchStartAlpha = 32;
+			pParticle->m_uchEndAlpha = 0;
+			pParticle->m_uchStartSize = 6;
+			pParticle->m_uchEndSize = 4;
+			pParticle->m_iFlags = 0;
+		}
+	}
+}
+
+
+
+
+