# 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 (c) 2000-2006 Torus Knot Software Ltd
    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 You may alternatively use this source under the terms of a specific version of
    00025 the OGRE Unrestricted License provided you have obtained such a license from
    00026 Torus Knot Software Ltd.
    00027 -----------------------------------------------------------------------------
    00028 */
    00029 #ifndef __ParticleEmitter_H__
    00030 #define __ParticleEmitter_H__
    00031
    00032 #include "OgrePrerequisites.h"
    00033 #include "OgreString.h"
    00034 #include "OgreVector3.h"
    00035 #include "OgreColourValue.h"
    00036 #include "OgreStringInterface.h"
    00037 #include "OgreParticleEmitterCommands.h"
    00038 #include "OgreParticle.h"
    00039
    00040
    00041 namespace Ogre {
    00042
    00043
    00066     class _OgreExport ParticleEmitter : public StringInterface, public Particle
    00067     {
    00068     protected:
    00069
    00070         // Command object for setting / getting parameters
    00071         static EmitterCommands::CmdAngle msAngleCmd;
    00072         static EmitterCommands::CmdColour msColourCmd;
    00073         static EmitterCommands::CmdColourRangeStart msColourRangeStartCmd;
    00074         static EmitterCommands::CmdColourRangeEnd msColourRangeEndCmd;
    00075         static EmitterCommands::CmdDirection msDirectionCmd;
    00076         static EmitterCommands::CmdEmissionRate msEmissionRateCmd;
    00077         static EmitterCommands::CmdMaxTTL msMaxTTLCmd;
    00078         static EmitterCommands::CmdMaxVelocity msMaxVelocityCmd;
    00079         static EmitterCommands::CmdMinTTL msMinTTLCmd;
    00080         static EmitterCommands::CmdMinVelocity msMinVelocityCmd;
    00081         static EmitterCommands::CmdPosition msPositionCmd;
    00082         static EmitterCommands::CmdTTL msTTLCmd;
    00083         static EmitterCommands::CmdVelocity msVelocityCmd;
    00084         static EmitterCommands::CmdDuration msDurationCmd;
    00085         static EmitterCommands::CmdMinDuration msMinDurationCmd;
    00086         static EmitterCommands::CmdMaxDuration msMaxDurationCmd;
    00087         static EmitterCommands::CmdRepeatDelay msRepeatDelayCmd;
    00088         static EmitterCommands::CmdMinRepeatDelay msMinRepeatDelayCmd;
    00089         static EmitterCommands::CmdMaxRepeatDelay msMaxRepeatDelayCmd;
    00090         static EmitterCommands::CmdName msNameCmd;
    00091         static EmitterCommands::CmdEmittedEmitter msEmittedEmitterCmd;
    00092
    00093
    00095         ParticleSystem* mParent;
    00097         Vector3 mPosition;
    00099         Real mEmissionRate;
    00101         String mType;
    00103         Vector3 mDirection;
    00104         // Notional up vector, just used to speed up generation of variant directions
    00105         Vector3 mUp;
    00107         Radian mAngle;
    00109         Real mMinSpeed;
    00111         Real mMaxSpeed;
    00113         Real mMinTTL;
    00115         Real mMaxTTL;
    00117         ColourValue mColourRangeStart;
    00119         ColourValue mColourRangeEnd;
    00120
    00122         bool mEnabled;
    00123
    00125         Real mStartTime;
    00127         Real mDurationMin;
    00129         Real mDurationMax;
    00131         Real mDurationRemain;
    00132
    00134         Real mRepeatDelayMin;
    00135         Real mRepeatDelayMax;
    00137         Real mRepeatDelayRemain;
    00138
    00139         // Fractions of particles wanted to be emitted last time
    00140         Real mRemainder;
    00141
    00143         String mName;
    00144
    00146         String mEmittedEmitter;
    00147
    00148         // If 'true', this emitter is emitted by another emitter.
    00149         // NB. That doesn´t imply that the emitter itself emits other emitters (that could or could not be the case)
    00150         bool mEmitted;
    00151
    00152         // NB Method below here are to help out people implementing emitters by providing the
    00153         // most commonly used approaches as piecemeal methods
    00154
    00158         virtual void genEmissionDirection(Vector3& destVector);
    00159
    00164         virtual void genEmissionVelocity(Vector3& destVector);
    00165
    00167         virtual Real genEmissionTTL(void);
    00168
    00170         virtual void genEmissionColour(ColourValue& destColour);
    00171
    00173         virtual unsigned short genConstantEmissionCount(Real timeElapsed);
    00174
    00183         void addBaseParameters(void);
    00184
    00186         void initDurationRepeat(void);
    00187
    00188
    00189     public:
    00190         ParticleEmitter(ParticleSystem* psys);
    00192         virtual ~ParticleEmitter();
    00193
    00195         virtual void setPosition(const Vector3& pos);
    00196
    00198         virtual const Vector3& getPosition(void) const;
    00199
    00209         virtual void setDirection(const Vector3& direction);
    00210
    00212         virtual const Vector3& getDirection(void) const;
    00213
    00224         virtual void setAngle(const Radian& angle);
    00225
    00227         virtual const Radian& getAngle(void) const;
    00228
    00236         virtual void setParticleVelocity(Real speed);
    00237
    00238
    00248         virtual void setParticleVelocity(Real min, Real max);
    00250         virtual void setMinParticleVelocity(Real min);
    00252         virtual void setMaxParticleVelocity(Real max);
    00253
    00255         virtual Real getParticleVelocity(void) const;
    00256
    00258         virtual Real getMinParticleVelocity(void) const;
    00259
    00261         virtual Real getMaxParticleVelocity(void) const;
    00262
    00275         virtual void setEmissionRate(Real particlesPerSecond);
    00276
    00278         virtual Real getEmissionRate(void) const;
    00279
    00290         virtual void setTimeToLive(Real ttl);
    00304         virtual void setTimeToLive(Real minTtl, Real maxTtl);
    00305
    00307         virtual void setMinTimeToLive(Real min);
    00309         virtual void setMaxTimeToLive(Real max);
    00310
    00312         virtual Real getTimeToLive(void) const;
    00313
    00315         virtual Real getMinTimeToLive(void) const;
    00317         virtual Real getMaxTimeToLive(void) const;
    00318
    00326         virtual void setColour(const ColourValue& colour);
    00336         virtual void setColour(const ColourValue& colourStart, const ColourValue& colourEnd);
    00338         virtual void setColourRangeStart(const ColourValue& colour);
    00340         virtual void setColourRangeEnd(const ColourValue& colour);
    00342         virtual const ColourValue& getColour(void) const;
    00344         virtual const ColourValue& getColourRangeStart(void) const;
    00346         virtual const ColourValue& getColourRangeEnd(void) const;
    00347
    00360         virtual unsigned short _getEmissionCount(Real timeElapsed) = 0;
    00361
    00371         virtual void _initParticle(Particle* pParticle) {
    00372             // Initialise size in case it's been altered
    00373             pParticle->resetDimensions();
    00374         }
    00375
    00376
    00382         const String &getType(void) const { return mType; }
    00383
    00388         virtual void setEnabled(bool enabled);
    00389
    00391         virtual bool getEnabled(void) const;
    00392
    00400         virtual void setStartTime(Real startTime);
    00402         virtual Real getStartTime(void) const;
    00403
    00415         virtual void setDuration(Real duration);
    00416
    00418         virtual Real getDuration(void) const;
    00419
    00431         virtual void setDuration(Real min, Real max);
    00433         virtual void setMinDuration(Real min);
    00435         virtual void setMaxDuration(Real max);
    00437         virtual Real getMinDuration(void) const;
    00439         virtual Real getMaxDuration(void) const;
    00440
    00450         virtual void setRepeatDelay(Real duration);
    00451
    00453         virtual Real getRepeatDelay(void) const;
    00454
    00466         virtual void setRepeatDelay(Real min, Real max);
    00468         virtual void setMinRepeatDelay(Real min);
    00470         virtual void setMaxRepeatDelay(Real max);
    00472         virtual Real getMinRepeatDelay(void) const;
    00474         virtual Real getMaxRepeatDelay(void) const;
    00475
    00477         const String &getName(void) const;
    00478
    00480         virtual void setName(const String& newName);
    00481
    00483         const String &getEmittedEmitter(void) const;
    00484
    00486         virtual void setEmittedEmitter(const String& emittedEmitter);
    00487
    00489         virtual bool isEmitted(void) const;
    00490
    00492         virtual void setEmitted(bool emitted);
    00493
    00494
    00495     };
    00496
    00497 }
    00498
    00499
    00500 #endif
    00501

Copyright © 2008 Torus Knot Software Ltd
This work is licensed under a Creative Commons Attribution-ShareAlike 2.5 License.
Last modified Sun Dec 27 17:31:06 2009