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OgreParticleEmitter.h

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00001 /*
00002 -----------------------------------------------------------------------------
00003 This source file is part of OGRE 
00004     (Object-oriented Graphics Rendering Engine)
00005 For the latest info, see http://www.ogre3d.org/
00006 
00007 Copyright © 2000-2002 The OGRE Team
00008 Also see acknowledgements in Readme.html
00009 
00010 This program is free software; you can redistribute it and/or modify it under 
00011 the terms of the GNU Lesser General Public License as published by the Free Software 
00012 Foundation; either version 2 of the License, or (at your option) any later 
00013 version.
00014 
00015 This program is distributed in the hope that it will be useful, but WITHOUT 
00016 ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS 
00017 FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
00018 
00019 You should have received a copy of the GNU Lesser General Public License along with 
00020 this program; if not, write to the Free Software Foundation, Inc., 59 Temple 
00021 Place - Suite 330, Boston, MA 02111-1307, USA, or go to 
00022 http://www.gnu.org/copyleft/lesser.txt.
00023 -----------------------------------------------------------------------------
00024 */
00025 #ifndef __ParticleEmitter_H__
00026 #define __ParticleEmitter_H__
00027 
00028 #include "OgrePrerequisites.h"
00029 #include "OgreString.h"
00030 #include "OgreVector3.h"
00031 #include "OgreColourValue.h"
00032 #include "OgreStringInterface.h"
00033 #include "OgreParticleEmitterCommands.h"
00034 #include "OgreParticle.h"
00035 
00036 
00037 namespace Ogre {
00038 
00039 
00062     class _OgreExport ParticleEmitter : public StringInterface
00063     {
00064     protected:
00065 
00066         // Command object for setting / getting parameters
00067         static EmitterCommands::CmdAngle msAngleCmd;
00068         static EmitterCommands::CmdColour msColourCmd;
00069         static EmitterCommands::CmdColourRangeStart msColourRangeStartCmd;
00070         static EmitterCommands::CmdColourRangeEnd msColourRangeEndCmd;
00071         static EmitterCommands::CmdDirection msDirectionCmd;
00072         static EmitterCommands::CmdEmissionRate msEmissionRateCmd;
00073         static EmitterCommands::CmdMaxTTL msMaxTTLCmd;
00074         static EmitterCommands::CmdMaxVelocity msMaxVelocityCmd;
00075         static EmitterCommands::CmdMinTTL msMinTTLCmd;
00076         static EmitterCommands::CmdMinVelocity msMinVelocityCmd;
00077         static EmitterCommands::CmdPosition msPositionCmd;
00078         static EmitterCommands::CmdTTL msTTLCmd;
00079         static EmitterCommands::CmdVelocity msVelocityCmd;
00080         static EmitterCommands::CmdDuration msDurationCmd;
00081         static EmitterCommands::CmdMinDuration msMinDurationCmd;
00082         static EmitterCommands::CmdMaxDuration msMaxDurationCmd;
00083         static EmitterCommands::CmdRepeatDelay msRepeatDelayCmd;
00084         static EmitterCommands::CmdMinRepeatDelay msMinRepeatDelayCmd;
00085         static EmitterCommands::CmdMaxRepeatDelay msMaxRepeatDelayCmd;
00086 
00087 
00089         Vector3 mPosition;
00091         Real mEmissionRate;
00093         String mType;
00095         Vector3 mDirection;
00096         // Notional up vector, just used to speed up generation of variant directions
00097         Vector3 mUp;
00099         Real mAngle;
00101         Real mMinSpeed;
00103         Real mMaxSpeed;
00105         Real mMinTTL;
00107         Real mMaxTTL;
00109         ColourValue mColourRangeStart;
00111         ColourValue mColourRangeEnd;
00112 
00114         bool mEnabled;
00115 
00117         Real mStartTime;
00119         Real mDurationMin;
00121         Real mDurationMax;
00123         Real mDurationRemain;
00124 
00126         Real mRepeatDelayMin;
00127         Real mRepeatDelayMax;
00129         Real mRepeatDelayRemain;
00130 
00131 
00132 
00133         // NB Method below here are to help out people implementing emitters by providing the
00134         // most commonly used approaches as piecemeal methods
00135 
00139         virtual void genEmissionDirection(Vector3& destVector);
00140 
00145         virtual void genEmissionVelocity(Vector3& destVector);
00146 
00148         virtual Real genEmissionTTL(void);
00149 
00151         virtual void genEmissionColour(ColourValue& destColour);
00152 
00154         virtual unsigned short genConstantEmissionCount(Real timeElapsed);
00155 
00164         void addBaseParameters(void);
00165 
00167         void initDurationRepeat(void);
00168 
00169 
00170     public:
00171         ParticleEmitter();
00173         virtual ~ParticleEmitter();
00174 
00176         virtual void setPosition(const Vector3& pos);
00177 
00179         virtual const Vector3& getPosition(void) const;
00180 
00190         virtual void setDirection(const Vector3& direction);
00191 
00193         virtual const Vector3& getDirection(void) const;
00194 
00205         virtual void setAngle(Real degrees);
00206 
00208         virtual Real getAngle(void) const;
00209 
00217         virtual void setParticleVelocity(Real speed);
00218 
00219 
00229         virtual void setParticleVelocity(Real min, Real max);
00231         virtual void setMinParticleVelocity(Real min);
00233         virtual void setMaxParticleVelocity(Real max);
00234 
00236         virtual Real getParticleVelocity(void) const;
00237 
00239         virtual Real getMinParticleVelocity(void) const;
00240 
00242         virtual Real getMaxParticleVelocity(void) const;
00243 
00256         virtual void setEmissionRate(Real particlesPerSecond);
00257 
00259         virtual Real getEmissionRate(void) const;
00260 
00271         virtual void setTimeToLive(Real ttl);
00285         virtual void setTimeToLive(Real minTtl, Real maxTtl);
00286 
00288         virtual void setMinTimeToLive(Real min);
00290         virtual void setMaxTimeToLive(Real max);
00291         
00293         virtual Real getTimeToLive(void) const;
00294 
00296         virtual Real getMinTimeToLive(void) const;
00298         virtual Real getMaxTimeToLive(void) const;
00299 
00307         virtual void setColour(const ColourValue& colour);
00317         virtual void setColour(const ColourValue& colourStart, const ColourValue& colourEnd);
00319         virtual void setColourRangeStart(const ColourValue& colour);
00321         virtual void setColourRangeEnd(const ColourValue& colour);
00323         virtual const ColourValue& getColour(void) const;
00325         virtual const ColourValue& getColourRangeStart(void) const;
00327         virtual const ColourValue& getColourRangeEnd(void) const;
00328 
00341         virtual unsigned short _getEmissionCount(Real timeElapsed) = 0;
00342 
00352         virtual void _initParticle(Particle* pParticle) {
00353             // Initialise size incase it's been altered
00354             pParticle->resetDimensions();
00355         }
00356 
00357 
00363         String getType(void) { return mType; }
00364 
00369         virtual void setEnabled(bool enabled);
00370 
00372         virtual bool getEnabled(void) const;
00373 
00381         virtual void setStartTime(Real startTime);
00383         virtual Real getStartTime(void) const;
00384 
00396         virtual void setDuration(Real duration);
00397 
00399         virtual Real getDuration(void) const;
00400 
00412         virtual void setDuration(Real min, Real max);
00414         virtual void setMinDuration(Real min);
00416         virtual void setMaxDuration(Real max);
00418         virtual Real getMinDuration(void) const;
00420         virtual Real getMaxDuration(void) const;
00421 
00431         virtual void setRepeatDelay(Real duration);
00432 
00434         virtual Real getRepeatDelay(void) const;
00435 
00447         virtual void setRepeatDelay(Real min, Real max);
00449         virtual void setMinRepeatDelay(Real min);
00451         virtual void setMaxRepeatDelay(Real max);
00453         virtual Real getMinRepeatDelay(void) const;
00455         virtual Real getMaxRepeatDelay(void) const;
00456 
00457 
00458 
00459     };
00460 
00461 }
00462 
00463 
00464 #endif
00465 

Copyright © 2002-2003 by The OGRE Team
Last modified Wed Jan 21 00:10:20 2004