[692] | 1 | /*
|
---|
| 2 | -----------------------------------------------------------------------------
|
---|
| 3 | This source file is part of OGRE
|
---|
| 4 | (Object-oriented Graphics Rendering Engine)
|
---|
| 5 | For the latest info, see http://www.ogre3d.org/
|
---|
| 6 |
|
---|
| 7 | Copyright (c) 2000-2005 The OGRE Team
|
---|
| 8 | Also see acknowledgements in Readme.html
|
---|
| 9 |
|
---|
| 10 | This program is free software; you can redistribute it and/or modify it under
|
---|
| 11 | the terms of the GNU Lesser General Public License as published by the Free Software
|
---|
| 12 | Foundation; either version 2 of the License, or (at your option) any later
|
---|
| 13 | version.
|
---|
| 14 |
|
---|
| 15 | This program is distributed in the hope that it will be useful, but WITHOUT
|
---|
| 16 | ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
|
---|
| 17 | FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more details.
|
---|
| 18 |
|
---|
| 19 | You should have received a copy of the GNU Lesser General Public License along with
|
---|
| 20 | this program; if not, write to the Free Software Foundation, Inc., 59 Temple
|
---|
| 21 | Place - Suite 330, Boston, MA 02111-1307, USA, or go to
|
---|
| 22 | http://www.gnu.org/copyleft/lesser.txt.
|
---|
| 23 | -----------------------------------------------------------------------------
|
---|
| 24 | */
|
---|
| 25 | #include "OgreDirectionRandomiserAffector.h"
|
---|
| 26 | #include "OgreParticleSystem.h"
|
---|
| 27 | #include "OgreParticle.h"
|
---|
| 28 | #include "OgreStringConverter.h"
|
---|
| 29 |
|
---|
| 30 |
|
---|
| 31 | namespace Ogre {
|
---|
| 32 |
|
---|
| 33 | // Instantiate statics
|
---|
| 34 | DirectionRandomiserAffector::CmdRandomness DirectionRandomiserAffector::msRandomnessCmd;
|
---|
| 35 | DirectionRandomiserAffector::CmdScope DirectionRandomiserAffector::msScopeCmd;
|
---|
| 36 | DirectionRandomiserAffector::CmdKeepVelocity DirectionRandomiserAffector::msKeepVelocityCmd;
|
---|
| 37 |
|
---|
| 38 | //-----------------------------------------------------------------------
|
---|
| 39 | DirectionRandomiserAffector::DirectionRandomiserAffector(ParticleSystem* psys)
|
---|
| 40 | : ParticleAffector(psys)
|
---|
| 41 | {
|
---|
| 42 | mType = "DirectionRandomiser";
|
---|
| 43 |
|
---|
| 44 | // defaults
|
---|
| 45 | mRandomness = 1.0;
|
---|
| 46 | mScope = 1.0;
|
---|
| 47 | mKeepVelocity = false;
|
---|
| 48 |
|
---|
| 49 | // Set up parameters
|
---|
| 50 | if (createParamDictionary("DirectionRandomiserAffector"))
|
---|
| 51 | {
|
---|
| 52 | addBaseParameters();
|
---|
| 53 | // Add extra paramaters
|
---|
| 54 | ParamDictionary* dict = getParamDictionary();
|
---|
| 55 | dict->addParameter(ParameterDef("randomness",
|
---|
| 56 | "The amount of randomness (chaos) to apply to the particle movement.",
|
---|
| 57 | PT_REAL), &msRandomnessCmd);
|
---|
| 58 | dict->addParameter(ParameterDef("scope",
|
---|
| 59 | "The percentage of particles which is affected.",
|
---|
| 60 | PT_REAL), &msScopeCmd);
|
---|
| 61 | dict->addParameter(ParameterDef("keep_velocity",
|
---|
| 62 | "Detemines whether the velocity of the particles is changed.",
|
---|
| 63 | PT_BOOL), &msKeepVelocityCmd);
|
---|
| 64 | }
|
---|
| 65 | }
|
---|
| 66 | //-----------------------------------------------------------------------
|
---|
| 67 | void DirectionRandomiserAffector::_affectParticles(ParticleSystem* pSystem, Real timeElapsed)
|
---|
| 68 | {
|
---|
| 69 | ParticleIterator pi = pSystem->_getIterator();
|
---|
| 70 | Particle *p;
|
---|
| 71 | Real length;
|
---|
| 72 |
|
---|
| 73 | while (!pi.end())
|
---|
| 74 | {
|
---|
| 75 | p = pi.getNext();
|
---|
| 76 | if (mScope > Math::UnitRandom())
|
---|
| 77 | {
|
---|
| 78 | if (!p->direction.isZeroLength())
|
---|
| 79 | {
|
---|
| 80 | if (mKeepVelocity)
|
---|
| 81 | {
|
---|
| 82 | length = p->direction.length();
|
---|
| 83 | }
|
---|
| 84 |
|
---|
| 85 | p->direction += Vector3(Math::RangeRandom(-mRandomness, mRandomness) * timeElapsed,
|
---|
| 86 | Math::RangeRandom(-mRandomness, mRandomness) * timeElapsed,
|
---|
| 87 | Math::RangeRandom(-mRandomness, mRandomness) * timeElapsed);
|
---|
| 88 |
|
---|
| 89 | if (mKeepVelocity)
|
---|
| 90 | {
|
---|
| 91 | p->direction *= length / p->direction.length();
|
---|
| 92 | }
|
---|
| 93 | }
|
---|
| 94 | }
|
---|
| 95 | }
|
---|
| 96 | }
|
---|
| 97 | //-----------------------------------------------------------------------
|
---|
| 98 | void DirectionRandomiserAffector::setRandomness(Real force)
|
---|
| 99 | {
|
---|
| 100 | mRandomness = force;
|
---|
| 101 | }
|
---|
| 102 | //-----------------------------------------------------------------------
|
---|
| 103 | void DirectionRandomiserAffector::setScope(Real scope)
|
---|
| 104 | {
|
---|
| 105 | mScope = scope;
|
---|
| 106 | }
|
---|
| 107 | //-----------------------------------------------------------------------
|
---|
| 108 | void DirectionRandomiserAffector::setKeepVelocity(bool keepVelocity)
|
---|
| 109 | {
|
---|
| 110 | mKeepVelocity = keepVelocity;
|
---|
| 111 | }
|
---|
| 112 | //-----------------------------------------------------------------------
|
---|
| 113 | Real DirectionRandomiserAffector::getRandomness(void) const
|
---|
| 114 | {
|
---|
| 115 | return mRandomness;
|
---|
| 116 | }
|
---|
| 117 | //-----------------------------------------------------------------------
|
---|
| 118 | Real DirectionRandomiserAffector::getScope(void) const
|
---|
| 119 | {
|
---|
| 120 | return mScope;
|
---|
| 121 | }
|
---|
| 122 | //-----------------------------------------------------------------------
|
---|
| 123 | bool DirectionRandomiserAffector::getKeepVelocity(void) const
|
---|
| 124 | {
|
---|
| 125 | return mKeepVelocity;
|
---|
| 126 | }
|
---|
| 127 |
|
---|
| 128 | //-----------------------------------------------------------------------
|
---|
| 129 | //-----------------------------------------------------------------------
|
---|
| 130 | // Command objects
|
---|
| 131 | //-----------------------------------------------------------------------
|
---|
| 132 | //-----------------------------------------------------------------------
|
---|
| 133 | String DirectionRandomiserAffector::CmdRandomness::doGet(const void* target) const
|
---|
| 134 | {
|
---|
| 135 | return StringConverter::toString(
|
---|
| 136 | static_cast<const DirectionRandomiserAffector*>(target)->getRandomness() );
|
---|
| 137 | }
|
---|
| 138 | void DirectionRandomiserAffector::CmdRandomness::doSet(void* target, const String& val)
|
---|
| 139 | {
|
---|
| 140 | static_cast<DirectionRandomiserAffector*>(target)->setRandomness(StringConverter::parseReal(val));
|
---|
| 141 | }
|
---|
| 142 |
|
---|
| 143 | String DirectionRandomiserAffector::CmdScope::doGet(const void* target) const
|
---|
| 144 | {
|
---|
| 145 | return StringConverter::toString(
|
---|
| 146 | static_cast<const DirectionRandomiserAffector*>(target)->getScope() );
|
---|
| 147 | }
|
---|
| 148 | void DirectionRandomiserAffector::CmdScope::doSet(void* target, const String& val)
|
---|
| 149 | {
|
---|
| 150 | static_cast<DirectionRandomiserAffector*>(target)->setScope(StringConverter::parseReal(val));
|
---|
| 151 | }
|
---|
| 152 | String DirectionRandomiserAffector::CmdKeepVelocity::doGet(const void* target) const
|
---|
| 153 | {
|
---|
| 154 | return StringConverter::toString(
|
---|
| 155 | static_cast<const DirectionRandomiserAffector*>(target)->getKeepVelocity() );
|
---|
| 156 | }
|
---|
| 157 | void DirectionRandomiserAffector::CmdKeepVelocity::doSet(void* target, const String& val)
|
---|
| 158 | {
|
---|
| 159 | static_cast<DirectionRandomiserAffector*>(target)->setKeepVelocity(StringConverter::parseBool(val));
|
---|
| 160 | }
|
---|
| 161 |
|
---|
| 162 | }
|
---|