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game/client/c_te_particlesystem.h

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+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+// $NoKeywords: $
+//
+//=============================================================================//
+
+// This file defines the C_TEParticleSystem class, which handles most of the
+// interfacing with the particle manager, simulation, and rendering.
+
+// NOTE: most tempents are singletons.
+
+#ifndef C_TE_PARTICLESYSTEM_H
+#define C_TE_PARTICLESYSTEM_H
+
+
+#include "particlemgr.h"
+#include "c_basetempentity.h"
+#include "particles_simple.h"
+
+
+#define SIMSHIFT	10
+
+
+typedef enum {
+	pt_static, 
+	pt_grav,
+	pt_slowgrav,
+	pt_fire,
+	pt_explode,
+	pt_explode2,
+	pt_blob,
+	pt_blob2,
+	pt_vox_slowgrav,
+	pt_vox_grav,
+	pt_snow,
+	pt_rain,
+	pt_clientcustom   // Must have callback function specified
+} ptype_t;
+
+
+
+class C_TEParticleSystem : public C_BaseTempEntity
+{
+public:
+
+	DECLARE_CLASS( C_TEParticleSystem, C_BaseTempEntity );
+	DECLARE_CLIENTCLASS();
+
+					C_TEParticleSystem();
+
+
+public:
+
+	// particle effect sort origin
+	Vector			m_vecOrigin;
+};
+
+
+// This is the class that legacy tempents use to emit particles.
+// They use it in this pattern:
+//	CTEParticleRenderer *pRen = CTEParticleRenderer::Create();
+//	pRen->AddParticle....
+//	pRen->Release();
+
+class CTEParticleRenderer : public CParticleEffect
+{
+public:
+	DECLARE_CLASS( CTEParticleRenderer, CParticleEffect );
+	virtual						~CTEParticleRenderer();
+
+	// Create a CTEParticleRenderer. Pass in your sort origin (m_vecOrigin).
+	static CSmartPtr<CTEParticleRenderer>	Create( const char *pDebugName, const Vector &vOrigin );
+
+	StandardParticle_t*		AddParticle();
+
+	CParticleMgr*			GetParticleMgr();
+
+	void					SetParticleType( StandardParticle_t *pParticle, ptype_t type );
+	ptype_t					GetParticleType( StandardParticle_t *pParticle );
+
+	// Get/set lifetime. Note: lifetime here is a counter. You set it to a value and it 
+	// counts down and disappears after that long.
+	void					SetParticleLifetime( StandardParticle_t *pParticle, float lifetime );
+	float					GetParticleLifetime( StandardParticle_t *pParticle );
+
+
+// IParticleEffect overrides.	
+public:
+	virtual void RenderParticles( CParticleRenderIterator *pIterator );
+	virtual void SimulateParticles( CParticleSimulateIterator *pIterator );
+
+private:
+					CTEParticleRenderer( const char *pDebugName );
+					CTEParticleRenderer( const CTEParticleRenderer & ); // not defined, not accessible
+
+	int				m_nActiveParticles;
+	float			m_ParticleSize;
+	PMaterialHandle	m_MaterialHandle;
+};
+
+
+
+// ------------------------------------------------------------------------ //
+// Inlines.
+// ------------------------------------------------------------------------ //
+inline void CTEParticleRenderer::SetParticleType(StandardParticle_t *pParticle, ptype_t type)
+{
+	pParticle->m_EffectData = (unsigned char)type;
+}
+
+inline ptype_t CTEParticleRenderer::GetParticleType(StandardParticle_t *pParticle)
+{
+	return (ptype_t)pParticle->m_EffectData;
+}
+
+// Get/set lifetime. Note that 
+inline void CTEParticleRenderer::SetParticleLifetime(StandardParticle_t *pParticle, float lifetime)
+{
+	pParticle->m_Lifetime = lifetime;
+}
+
+inline float CTEParticleRenderer::GetParticleLifetime(StandardParticle_t *pParticle)
+{
+	return pParticle->m_Lifetime;
+}
+
+
+#endif
+
+
+