OOParticleSystem.h

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/*
 
OOParticleSystem.h
 
 
Oolite
Copyright (C) 2004-2013 Giles C Williams and contributors
 
This program is free software; you can redistribute it and/or
modify it under the terms of the GNU General Public License
as published by the Free Software Foundation; either version 2
of the License, or (at your option) any later version.
 
This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.
 
You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston,
MA 02110-1301, USA.
 
*/
 
#import "Entity.h"
 
#import "OOTypes.h"
#import "OOMaths.h"
 
@class OOTexture, OOColor;
 
 
enum
{
    kFragmentBurstMaxParticles      = 64,
    kBigFragmentBurstMaxParticles   = 16
};
 
 
@interface OOParticleSystem: Entity
{
@protected
    Vector          _particlePosition[kFragmentBurstMaxParticles];
    Vector          _particleVelocity[kFragmentBurstMaxParticles];
    GLfloat         _particleColor[kFragmentBurstMaxParticles][4];
    GLfloat         _particleSize[kFragmentBurstMaxParticles];
    unsigned        _count;
    
    unsigned        _particleType;
    
    OOTimeDelta     _timePassed, _duration;
    double          _maxSpeed;
}
 
/*  Initialize particle effect with particles flying out randomly.
    Initiali _particleSize[] is equal to speed.
 */
- (id) initWithPosition:(HPVector)position
               velocity:(Vector)velocity
                  count:(unsigned)count
               minSpeed:(float)minSpeed
               maxSpeed:(float)maxSpeed
               duration:(OOTimeDelta)duration
              baseColor:(GLfloat[4])baseColor;
 
- (OOTexture *) texture;
 
@end
 
 
@interface OOSmallFragmentBurstEntity: OOParticleSystem
 
+ (id) fragmentBurstFromEntity:(Entity *)entity;
 
@end
 
 
@interface OOBigFragmentBurstEntity: OOParticleSystem
{
@private
    GLfloat         _baseSize;
}
 
+ (id) fragmentBurstFromEntity:(Entity *)entity;
 
@end