101 lines
2.6 KiB
C++
101 lines
2.6 KiB
C++
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/*
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$Id$
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PLIB - A Suite of Portable Game Libraries
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Copyright (C) 1998,2002 Steve Baker
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with this library; if not, write to the Free Software
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Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
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For further information visit http://plib.sourceforge.net */
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#include <plib/ssg.h>
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class Particle
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{
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public:
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sgVec4 m_col ;
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sgVec3 m_pos ;
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sgVec3 m_vel ;
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sgVec3 m_acc ;
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float m_size ;
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float m_time_to_live ;
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void *m_user_data ;
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void update ( float dt )
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{
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sgAddScaledVec3 ( m_vel, m_acc, dt ) ;
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sgAddScaledVec3 ( m_pos, m_vel, dt ) ;
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m_time_to_live -= dt ;
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}
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Particle ()
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{
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sgSetVec4 ( m_col, 1, 1, 1, 1 ) ;
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sgZeroVec3 ( m_pos ) ;
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sgZeroVec3 ( m_vel ) ;
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sgZeroVec3 ( m_acc ) ;
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m_time_to_live = 0 ;
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m_user_data = 0 ;
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m_size = 1.0f ;
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}
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} ;
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class ParticleSystem ;
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class ParticleSystem : public ssgVtxTable
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{
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int m_num_particles ;
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int m_num_verts ;
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int m_turn_to_face ;
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int m_num_active ;
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Particle* m_particles ;
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float m_create_error ;
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float m_create_rate ;
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float m_size ;
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public:
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ParticleSystem ( int num, float _create_rate, int _turn_to_face,
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float sz, float bsphere_size);
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virtual ~ParticleSystem () ;
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virtual void update ( float t ) ;
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virtual void particle_create( int index, Particle *p ) = 0;
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virtual void particle_update( float deltaTime, int index, Particle *p ) = 0;
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virtual void particle_delete( int index, Particle* p ) = 0;
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void init(int initial_num);
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void recalcBSphere();
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void setSize ( float sz ) { m_size = sz ; }
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float getSize () const { return m_size ; }
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void draw_geometry () ;
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void setCreationRate ( float cr ) { m_create_rate = cr ; }
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float getCreationRate () const { return m_create_rate ; }
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int getNumParticles () const { return m_num_particles ; }
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int getNumActiveParticles () const { return m_num_active ; }
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} ;
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/* EOF */
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