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Tuesday the 22nd of May 2012 @ 02:55am

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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 cRSkyMobile.cpp Go to the documentation of this file. /************************************************************************ Nova-2 Library (libN2L, or simply n2l) Game development C++ Library Copyright (C) 2002 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 "renderObjects/cRSkyMobile.h" #include "n2l/vfs.h" #include "n2l/dynVars.h" #include "n2l/materials.h" #include "n2l/resourceManagement.h" #include "renderObjects/cRFrustum.h" using namespace std; namespace n2l { /**************************************************************************/ cRSkyMobile::cRSkyMobile() { init(); } /**************************************************************************/ cRSkyMobile::cRSkyMobile( const cVfsNodeInterface &iNode ) { init(); load( iNode ); } /**************************************************************************/ cRSkyMobile::cRSkyMobile( const cDynVar &iDef ) { init(); load( iDef ); } /**************************************************************************/ cRSkyMobile::~cRSkyMobile() { free(); } /**************************************************************************/ void cRSkyMobile::load( const cDynVar &iDef ) { clear(); // Load mobiles, last (and only, for now) if (!iDef["mobiles"].isArray()) return; try { mSkipSort = true; const cDynVar::tConstIterator Last( iDef["mobiles"].end() ); for (cDynVar::tConstIterator i=iDef["mobiles"].begin(); i!=Last; ++i) { const cDynVar &Rotation( i->second["rotation"] ); const cDynVar &Size( i->second["size"] ); addSprite( i->first, tVector3f( Rotation[0], Rotation[1], Rotation[2] ), tFloat(i->second.keyValueOr("distance",1.0f)), tVector2f( Size.keyValueOr(0,1.0f), Size.keyValueOr(1,1.0f) ), cResourceManager::get<cGLTexture>( i->second["texture"] ) ); } mSkipSort = false; } catch ( const cException &iException ) { clear(); mSkipSort = false; iException.rethrow(); } sort(); } /**************************************************************************/ void cRSkyMobile::load( const cVfsNodeInterface &iNode ) { tVfsFileBuffer buffer; tUint DataOffset; try { DataOffset = vfsNodeFileWithHeader( iNode, "n2l::cRSkyMobile", buffer ); } catch ( const cBadDataUseException & iException ) { throw cBadDataUseException( "cRSkyMobile::load", tString("Failed to load: \"")+ iNode.name() + "\": " + tString(iException) ); } cDynVar def; def.unserialize( buffer, DataOffset ); load( def ); } /**************************************************************************/ void cRSkyMobile::draw( const tUint iOptions ) const { glPushAttrib( GL_ALL_ATTRIB_BITS ); glEnable( GL_TEXTURE_2D ); glDisable( GL_DEPTH_TEST ); glBlendFunc( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA ); glEnable( GL_BLEND ); glDepthMask( false ); glCullFace( GL_BACK ); glEnable( GL_CULL_FACE ); glColor4f(1,1,1,1); const tUint NumSprites( mSprites.size() ); for (tUint i=0; i<NumSprites; ++i) { mSprites[i].mTexture->bind(); glBegin( GL_QUADS ); glTexCoord2f( 0,1 ); mSprites[i].mA.glVertex3f(); glTexCoord2f( 1,1 ); mSprites[i].mB.glVertex3f(); glTexCoord2f( 1,0 ); mSprites[i].mC.glVertex3f(); glTexCoord2f( 0,0 ); mSprites[i].mD.glVertex3f(); glEnd(); } glPopAttrib(); } /**************************************************************************/ void cRSkyMobile::draw( const cRFrustum &iFrustum, const tVector3f &iPosAdjust, const tUint iOptions ) const { glPushAttrib( GL_ALL_ATTRIB_BITS ); glEnable( GL_TEXTURE_2D ); glDisable( GL_DEPTH_TEST ); glBlendFunc( GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA ); glEnable( GL_BLEND ); glDepthMask( false ); glCullFace( GL_BACK ); glEnable( GL_CULL_FACE ); glColor4f(1,1,1,1); const tUint NumSprites( mSprites.size() ); for (tUint i=0; i<NumSprites; ++i) { if (!iFrustum.testQuad( mSprites[i].mA+iPosAdjust, mSprites[i].mB+iPosAdjust, mSprites[i].mC+iPosAdjust, mSprites[i].mD+iPosAdjust )) continue; mSprites[i].mTexture->bind(); glBegin( GL_QUADS ); glTexCoord2f( 0,1 ); mSprites[i].mA.glVertex3f(); glTexCoord2f( 1,1 ); mSprites[i].mB.glVertex3f(); glTexCoord2f( 1,0 ); mSprites[i].mC.glVertex3f(); glTexCoord2f( 0,0 ); mSprites[i].mD.glVertex3f(); glEnd(); } glPopAttrib(); } /**************************************************************************/ const cRSkyMobile::tSprite &cRSkyMobile::mustFindSprite( const tString &iName ) const { const vector<tSprite>::const_iterator LastSprite( mSprites.end() ); for (vector<tSprite>::const_iterator i=mSprites.begin(); i!=LastSprite; ++i) { if (i->mName==iName) return *i; } throw cOutOfBoundsException( "cRSkyMobile::mustFindSprite", tString("No such sprite named: ")+iName ); } /**************************************************************************/ void cRSkyMobile::addSprite( const tString &iName, const tVector3f &iRotation, const tFloat &iDistance, const tVector2f &iSize, const cAutoPtr<const cGLTexture> &iTexture ) { if (!iTexture.isSet()) throw cBadDataUseException( "cRSkyMobile::addSprite", "Tried to add a null texture sprite" ); // Calculate the unit vectors for this position. tVector3f uUp(0,1,0); tVector3f uLeft(1,0,0); uUp.rotateD( -iRotation.y(), tVector3f(1,0,0) ); uUp.rotateD( iRotation.x(), tVector3f(0,1,0) ); uLeft.rotateD( -iRotation.y(), tVector3f(1,0,0) ); uLeft.rotateD( iRotation.x(), tVector3f(0,1,0) ); tVector3f uPos( uLeft.cross(uUp)*iDistance ); // Finally, roll the vector around the direction vector tVector3f posDirV( uPos ); posDirV.normalize(); uUp.rotateD( -iRotation.z(), posDirV ); uLeft.rotateD( -iRotation.z(), posDirV ); tSprite newSprite; newSprite.mName = iName; newSprite.mA = uPos + (uUp*-0.5f*iSize.y())+(uLeft*0.5f*iSize.x()); newSprite.mB = uPos + (uUp*-0.5f*iSize.y())+(uLeft*-0.5f*iSize.x()); newSprite.mC = uPos + (uUp*0.5f*iSize.y())+(uLeft*-0.5f*iSize.x()); newSprite.mD = uPos + (uUp*0.5f*iSize.y())+(uLeft*0.5f*iSize.x()); newSprite.mDistance = iDistance; // Keep this to sort faster. newSprite.mSize = iSize; // Later queries might want this. newSprite.mTexture = iTexture; mSprites.push_back( newSprite ); // Stupid to sort the whole list every time. But hey, I suck. if (!mSkipSort) sort(); } /**************************************************************************/ void cRSkyMobile::clear() { mSprites.clear(); mSkipSort = false; } /**************************************************************************/ void cRSkyMobile::init() { mSkipSort = false; } /**************************************************************************/ void cRSkyMobile::free() { } /**************************************************************************/ void cRSkyMobile::sort() { const tUint NumSprites( mSprites.size() ); if (NumSprites<2) return; for (tUint i1=0; i1<NumSprites-1; ++i1) for (tUint i2=0; i2<NumSprites-1-i1; ++i2) if ( mSprites[i2+1].mDistance > mSprites[i2].mDistance) { tSprite tempS( mSprites[i2+1] ); mSprites[i2+1] = mSprites[i2]; mSprites[i2] = tempS; } } } // namespace

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