vrshoot: 334d17aed7de libs/assimp/Q3BSPFileParser.cpp

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view libs/assimp/Q3BSPFileParser.cpp @ 2:334d17aed7de

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author	John Tsiombikas <nuclear@member.fsf.org>
date	Sun, 02 Feb 2014 18:36:38 +0200
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1 /*

2 Open Asset Import Library (assimp)

3 ----------------------------------------------------------------------

8 Redistribution and use of this software in source and binary forms,

9 with or without modification, are permitted provided that the

10 following conditions are met:

12 * Redistributions of source code must retain the above

13 copyright notice, this list of conditions and the

14 following disclaimer.

16 * Redistributions in binary form must reproduce the above

17 copyright notice, this list of conditions and the

18 following disclaimer in the documentation and/or other

19 materials provided with the distribution.

21 * Neither the name of the assimp team, nor the names of its

22 contributors may be used to endorse or promote products

23 derived from this software without specific prior

24 written permission of the assimp team.

26 THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS

27 "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT

28 LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR

29 A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT

30 OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,

31 SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT

32 LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,

33 DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY

34 THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT

35 (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE

36 OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.

38 ----------------------------------------------------------------------

39 */

40 #include "AssimpPCH.h"

42 #ifndef ASSIMP_BUILD_NO_Q3BSP_IMPORTER

44 #include "Q3BSPFileParser.h"

45 #include "DefaultIOSystem.h"

46 #include "Q3BSPFileData.h"

47 #include "Q3BSPZipArchive.h"

48 #include <vector>

50 namespace Assimp

51 {

53 using namespace Q3BSP;

55 // ------------------------------------------------------------------------------------------------

56 Q3BSPFileParser::Q3BSPFileParser( const std::string &rMapName, Q3BSPZipArchive *pZipArchive ) :

57 m_sOffset( 0 ),

58 m_Data(),

59 m_pModel( NULL ),

60 m_pZipArchive( pZipArchive )

61 {

62 ai_assert( NULL != m_pZipArchive );

63 ai_assert( !rMapName.empty() );

65 if ( !readData( rMapName ) )

66 return;

68 m_pModel = new Q3BSPModel;

69 m_pModel->m_ModelName = rMapName;

70 if ( !parseFile() )

71 {

72 delete m_pModel;

73 m_pModel = NULL;

74 }

75 }

77 // ------------------------------------------------------------------------------------------------

78 Q3BSPFileParser::~Q3BSPFileParser()

79 {

80 delete m_pModel;

81 m_pModel = NULL;

82 }

84 // ------------------------------------------------------------------------------------------------

85 Q3BSP::Q3BSPModel *Q3BSPFileParser::getModel() const

86 {

87 return m_pModel;

88 }

90 // ------------------------------------------------------------------------------------------------

91 bool Q3BSPFileParser::readData( const std::string &rMapName )

92 {

93 if ( !m_pZipArchive->Exists( rMapName.c_str() ) )

94 return false;

96 IOStream *pMapFile = m_pZipArchive->Open( rMapName.c_str() );

97 if ( NULL == pMapFile )

98 return false;

100 const size_t size = pMapFile->FileSize();

101 m_Data.resize( size );

102

103 const size_t readSize = pMapFile->Read( &m_Data[0], sizeof( char ), size );

104 if ( readSize != size )

105 {

106 m_Data.clear();

107 return false;

108 }

109 m_pZipArchive->Close( pMapFile );

110

111 return true;

112 }

113

114 // ------------------------------------------------------------------------------------------------

115 bool Q3BSPFileParser::parseFile()

116 {

117 if ( m_Data.empty() )

118 {

119 return false;

120 }

121

122 if ( !validateFormat() )

123 {

124 return false;

125 }

126

127 // Imports the dictionary of the level

128 getLumps();

129

130 // Conunt data and prepare model data

131 countLumps();

132

133 // Read in Vertices

134 getVertices();

135

136 // Read in Indices

137 getIndices();

138

139 // Read Faces

140 getFaces();

141

142 // Read Textures

143 getTextures();

144

145 // Read Lightmaps

146 getLightMaps();

147

148 // Load the entities

149 getEntities();

150

151 return true;

152 }

153

154 // ------------------------------------------------------------------------------------------------

155 bool Q3BSPFileParser::validateFormat()

156 {

157 sQ3BSPHeader *pHeader = (sQ3BSPHeader*) &m_Data[ 0 ];

158 m_sOffset += sizeof( sQ3BSPHeader );

159

160 // Version and identify string validation

161 if (pHeader->strID[ 0 ] != 'I' || pHeader->strID[ 1 ] != 'B' || pHeader->strID[ 2 ] != 'S'

162 || pHeader->strID[ 3 ] != 'P')

163 {

164 return false;

165 }

166

167 return true;

168 }

169

170 // ------------------------------------------------------------------------------------------------

171 void Q3BSPFileParser::getLumps()

172 {

173 size_t Offset = m_sOffset;

174 m_pModel->m_Lumps.resize( kMaxLumps );

175 for ( size_t idx=0; idx < kMaxLumps; idx++ )

176 {

177 sQ3BSPLump *pLump = new sQ3BSPLump;

178 memcpy( pLump, &m_Data[ Offset ], sizeof( sQ3BSPLump ) );

179 Offset += sizeof( sQ3BSPLump );

180 m_pModel->m_Lumps[ idx ] = pLump;

181 }

182 }

183

184 // ------------------------------------------------------------------------------------------------

185 void Q3BSPFileParser::countLumps()

186 {

187 m_pModel->m_Vertices.resize( m_pModel->m_Lumps[ kVertices ]->iSize / sizeof( sQ3BSPVertex ) );

188 m_pModel->m_Indices.resize( m_pModel->m_Lumps[ kMeshVerts ]->iSize / sizeof( int ) );

189 m_pModel->m_Faces.resize( m_pModel->m_Lumps[ kFaces ]->iSize / sizeof( sQ3BSPFace ) );

190 m_pModel->m_Textures.resize( m_pModel->m_Lumps[ kTextures ]->iSize / sizeof( sQ3BSPTexture ) );

191 m_pModel->m_Lightmaps.resize( m_pModel->m_Lumps[ kLightmaps ]->iSize / sizeof( sQ3BSPLightmap ) );

192 }

193

194 // ------------------------------------------------------------------------------------------------

195 void Q3BSPFileParser::getVertices()

196 {

197 size_t Offset = m_pModel->m_Lumps[ kVertices ]->iOffset;

198 for ( size_t idx = 0; idx < m_pModel->m_Vertices.size(); idx++ )

199 {

200 sQ3BSPVertex *pVertex = new sQ3BSPVertex;

201 memcpy( pVertex, &m_Data[ Offset ], sizeof( sQ3BSPVertex ) );

202 Offset += sizeof( sQ3BSPVertex );

203 m_pModel->m_Vertices[ idx ] = pVertex;

204 }

205 }

206

207 // ------------------------------------------------------------------------------------------------

208 void Q3BSPFileParser::getIndices()

209 {

210 ai_assert( NULL != m_pModel );

211

212 sQ3BSPLump *lump = m_pModel->m_Lumps[ kMeshVerts ];

213 size_t Offset = (size_t) lump->iOffset;

214 const size_t nIndices = lump->iSize / sizeof( int );

215 m_pModel->m_Indices.resize( nIndices );

216 memcpy( &m_pModel->m_Indices[ 0 ], &m_Data[ Offset ], lump->iSize );

217 }

218

219 // ------------------------------------------------------------------------------------------------

220 void Q3BSPFileParser::getFaces()

221 {

222 ai_assert( NULL != m_pModel );

223

224 size_t Offset = m_pModel->m_Lumps[ kFaces ]->iOffset;

225 for ( size_t idx = 0; idx < m_pModel->m_Faces.size(); idx++ )

226 {

227 sQ3BSPFace *pFace = new sQ3BSPFace;

228 memcpy( pFace, &m_Data[ Offset ], sizeof( sQ3BSPFace ) );

229 m_pModel->m_Faces[ idx ] = pFace;

230 Offset += sizeof( sQ3BSPFace );

231 }

232 }

233

234 // ------------------------------------------------------------------------------------------------

235 void Q3BSPFileParser::getTextures()

236 {

237 ai_assert( NULL != m_pModel );

238

239 size_t Offset = m_pModel->m_Lumps[ kTextures ]->iOffset;

240 for ( size_t idx=0; idx < m_pModel->m_Textures.size(); idx++ )

241 {

242 sQ3BSPTexture *pTexture = new sQ3BSPTexture;

243 memcpy( pTexture, &m_Data[ Offset ], sizeof(sQ3BSPTexture) );

244 m_pModel->m_Textures[ idx ] = pTexture;

245 Offset += sizeof(sQ3BSPTexture);

246 }

247 }

248

249 // ------------------------------------------------------------------------------------------------

250 void Q3BSPFileParser::getLightMaps()

251 {

252 ai_assert( NULL != m_pModel );

253

254 size_t Offset = m_pModel->m_Lumps[kLightmaps]->iOffset;

255 for ( size_t idx=0; idx < m_pModel->m_Lightmaps.size(); idx++ )

256 {

257 sQ3BSPLightmap *pLightmap = new sQ3BSPLightmap;

258 memcpy( pLightmap, &m_Data[ Offset ], sizeof( sQ3BSPLightmap ) );

259 Offset += sizeof( sQ3BSPLightmap );

260 m_pModel->m_Lightmaps[ idx ] = pLightmap;

261 }

262 }

263

264 // ------------------------------------------------------------------------------------------------

265 void Q3BSPFileParser::getEntities()

266 {

267 int size = m_pModel->m_Lumps[ kEntities ]->iSize;

268 m_pModel->m_EntityData.resize( size );

269 if ( size > 0 )

270 {

271 size_t Offset = m_pModel->m_Lumps[ kEntities ]->iOffset;

272 memcpy( &m_pModel->m_EntityData[ 0 ], &m_Data[ Offset ], sizeof( char ) * size );

273 }

274 }

275

276 // ------------------------------------------------------------------------------------------------

277

278 } // Namespace Assimp

279

280 #endif // ASSIMP_BUILD_NO_Q3BSP_IMPORTER