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game/client/particle_collision.h

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+//========= Copyright Valve Corporation, All rights reserved. ============//
+//
+// Purpose: 
+//
+// $Workfile:     $
+// $Date:         $
+//
+//-----------------------------------------------------------------------------
+// $Log: $
+//
+// $NoKeywords: $
+//=============================================================================//
+
+#if !defined( PARTICLE_COLLISION_H )
+#define PARTICLE_COLLISION_H
+#ifdef _WIN32
+#pragma once
+#endif
+
+#include "particles_simple.h"
+#include "particlemgr.h"
+
+#define	MAX_COLLISION_PLANES	6
+
+//
+// CBaseSimpleCollision
+//
+
+class CBaseSimpleCollision
+{
+public:
+
+	CBaseSimpleCollision( void );
+
+	static	CBaseSimpleCollision *Create( void )	{	return	new CBaseSimpleCollision;	}
+
+	virtual void	Setup( const Vector &origin, float speed, float gravity );
+	virtual void	TraceLine( const Vector &start, const Vector &end, trace_t *pTrace, bool coarse = true );
+
+	void	ClearActivePlanes( void	);
+
+protected:
+
+	virtual	void	TestForPlane( const Vector &start, const Vector &dir, float speed, float gravity );
+	virtual	void	ConsiderPlane( cplane_t *plane );
+
+	VPlane	m_collisionPlanes[MAX_COLLISION_PLANES];
+	int		m_nActivePlanes;
+};
+
+//
+// CParticleCollision
+//
+
+class CParticleCollision : public CBaseSimpleCollision
+{
+public:
+
+	CParticleCollision( void );
+
+	static	CParticleCollision *Create( void )	{	return	new CParticleCollision;	}
+
+	virtual void	Setup( const Vector &origin, const Vector *dir, float angularSpread, float minSpeed, float maxSpeed, float gravity, float dampen );
+	virtual bool	MoveParticle( Vector &origin, Vector &velocity, float *rollDelta, float timeDelta, trace_t *pTrace );
+
+	void	SetGravity( float gravity )					{	m_flGravity = gravity;			}
+	void	SetCollisionDampen( float dampen )			{	m_flCollisionDampen = dampen;	}
+	void	SetAngularCollisionDampen( float dampen )	{	m_flAngularCollisionDampen = dampen;}
+
+protected:
+
+	float	m_flGravity;
+	float	m_flCollisionDampen;
+	float	m_flAngularCollisionDampen;
+};
+
+#endif //PARTICLE_COLLISION_H