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Wednesday the 23rd of May 2012 @ 04:06pm

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LibN2L N2L Home Older News Downloads Documentation (n2l5) Class Hierarchy Compound List File List n2l:: Members Functions Whole n2l:: Ref Documentation (libN2L-4) Class Hierarchy Compound List File List n2l:: Members Functions Whole n2l:: Ref Bugtracker Project Page Report a Bug Bug List Related Things Life 2130 Devel Game Journal

LibN2L-4 Library Code Reference Classes Compounds Files Members Method Index Full Reference cLineEmitter.cpp Go to the documentation of this file. /************************************************************************ Nova-2 Library (libN2L, or simply n2l) Game development C++ Library Copyright (C) 2003 Aaron Cameron This library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License as published by the Free Software Foundation; either version 2.1 of the License, or (at your option) any later version. This library 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 Lesser General Public License for more details. You should have received a copy of the GNU Lesser General Public License along with this library; if not, write to the Free Software Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA A copy of the GNU Lesser General Public License has been provided with this library in the file 'COPYING'. Contact information for the author of this library has been provided with this library in the file 'AUTHOR'. ************************************************************************/ #include "particles/cLineEmitter.h" #include "particles/cParticle.h" #include "particles/cParticleSystem.h" namespace n2l { /* ************************************************************ */ cLineEmitter::cLineEmitter() : mParentSystem(0), mEmissionPerSecond( 100.0f ), mRemainder(0) { mLinePos[0] = tVector3f(0.0f,0.0f,0.0f); mLinePos[1] = tVector3f(1.0f,1.0f,1.0f); mVelocityRange[0] = tVector3f( -1.0f, -1.0f, -1.0f ); mVelocityRange[1] = tVector3f( 1.0f, 1.0f, 1.0f ); mSizeRange[0] = tVector2f( 0.5, 0.5 ); mSizeRange[1] = tVector2f( 0.25, 0.25 ); mGrowthRange[0] = tVector2f( -0.25, -0.25 ); mGrowthRange[1] = tVector2f( -0.25, -0.25 ); mStartColour = cColour( 0.8,0.8,0.8 ); mEndColour = cColour( 0.8,0.8,0.8 ); mTimeToLive = 6000; } /* ************************************************************ */ cLineEmitter::~cLineEmitter() { } /* ************************************************************ */ void cLineEmitter::update( const tUint iTimePassed ) { if (!mParentSystem) throw cBadDataUseException( "cLineEmitter::update", "No parent system to emit into" ); updateInto( iTimePassed, *mParentSystem ); } /* ************************************************************ */ void cLineEmitter::updateInto( const tUint iTimePassed, cParticleSystem &ioSystem ) { static const cAutoPtr<const cGLTexture> NoTexture(0); // cout << "Update: " << iTimePassed << " passed with " << mRemainder << " oustanding, "; // Add to the time already passed mRemainder += iTimePassed; // Find out how many emissions we have in that timeframe const tUint Emissions = tUint(mRemainder/1000.0f * mEmissionPerSecond); // cout << "Dropping " << Emissions << " emissions" << endl; // Drop the emissions from the outstanding balance mRemainder -= tUint(Emissions*(1000.0f/mEmissionPerSecond)); // Emit whatever we should for (tUint i=0; i<Emissions; ++i) { tVector3f newPos( (mLinePos[1]-mLinePos[0])*(n2l::random(100000)/100000.0f) ); newPos += mLinePos[0]; tVector3f newVelo( mVelocityRange[1]-mVelocityRange[0] ); newVelo *= tVector3f( (n2l::random(10000)/10000.0f), (n2l::random(10000)/10000.0f), (n2l::random(10000)/10000.0f) ); newVelo += mVelocityRange[0]; tVector2f newSize( mSizeRange[1]-mSizeRange[0] ); newSize *= tVector2f( (n2l::random(10000)/10000.0f), (n2l::random(10000)/10000.0f) ); newSize += mSizeRange[0]; // Missing stuff here ioSystem.addParticle( cParticle( newPos, newVelo, newSize, mGrowthRange[0], mStartColour, mEndColour, mTimeToLive, (mTextures.empty()?NoTexture:mTextures[n2l::random(mTextures.size())]) ) ); } // for each emission } /* ************************************************************ */ void cLineEmitter::parentSystem( cParticleSystem * const i_ioSystem ) { mParentSystem = i_ioSystem; } /* ************************************************************ */ void cLineEmitter::line( const tVector3f & iPosA, const tVector3f & iPosB ) { mLinePos[0] = iPosA; mLinePos[1] = iPosB; } /* ************************************************************ */ void cLineEmitter::addTexture( const cAutoPtr<const cGLTexture> i_iTexture ) { mTextures.push_back(i_iTexture); } /* ************************************************************ */ void cLineEmitter::emissionPerSecond( const tFloat iEmissionPerSecond ) { mEmissionPerSecond = iEmissionPerSecond; } /* ************************************************************ */ void cLineEmitter::size( const tVector2f & iSizeA, const tVector2f & iSizeB ) { mSizeRange[0] = iSizeA; mSizeRange[1] = iSizeB; } /* ************************************************************ */ void cLineEmitter::velocity( const tVector3f & iVelocityA, const tVector3f & iVelocityB ) { mVelocityRange[0] = iVelocityA; mVelocityRange[1] = iVelocityB; } /* ************************************************************ */ void cLineEmitter::startEndColours( const cColour & iStartColour, const cColour & iEndColour ) { mStartColour = iStartColour; mEndColour = iEndColour; } /* ************************************************************ */ void cLineEmitter::growth( const tVector2f & iGrowthA, const tVector2f & iGrowthB ) { mGrowthRange[0] = iGrowthA; mGrowthRange[1] = iGrowthB; } /* ************************************************************ */ void cLineEmitter::timeToLive( const tUint iTTL ) { mTimeToLive = iTTL; } /* ************************************************************ */ cParticleSystem * const cLineEmitter::parentSystem() { return mParentSystem; } } // namespace

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