OORingEffectEntity.h

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/*
 
OORingEffectEntity.h
 
Entity subclass for expanding-ring effect, used for hyperspace entry and for
some large explosions.
 
 
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"
 
 
@interface OORingEffectEntity: Entity
{
@private
    GLfloat             _timePassed;
    GLfloat             _innerRadius,
                        _outerRadius,
                        _innerGrowthRate,
                        _outerGrowthRate;
}
 
+ (instancetype) ringFromEntity:(Entity *)sourceEntity;
+ (instancetype) shrinkingRingFromEntity:(Entity *)sourceEntity;
 
@end