qboolean ParseEntity(void)
{
epair_t *e;
/* dummy check */
if(!GetToken(qtrue))
return qfalse;
if(strcmp(token, "{"))
Error("ParseEntity: { not found");
if(numEntities == MAX_MAP_ENTITIES)
Error("numEntities == MAX_MAP_ENTITIES");
/* create new entity */
mapEnt = &entities[numEntities];
numEntities++;
/* parse */
while(1)
{
if(!GetToken(qtrue))
Error("ParseEntity: EOF without closing brace");
if(!EPAIR_STRCMP(token, "}"))
break;
e = ParseEPair();
e->next = mapEnt->epairs;
mapEnt->epairs = e;
}
/* return to sender */
return qtrue;
}
void ParsePatch( qboolean onlyLights )
{
vec_t info[ 5 ];
int i, j, k;
parseMesh_t *pm;
char texture[ MAX_QPATH ];
char shader[ MAX_QPATH ];
mesh_t m;
bspDrawVert_t *verts;
epair_t *ep;
vec4_t delta, delta2, delta3;
qboolean degenerate;
float longestCurve;
int maxIterations;
MatchToken( "{" );
/* get texture */
GetToken( qtrue );
strcpy( texture, token );
Parse1DMatrix( 5, info );
m.width = info[0];
m.height = info[1];
m.verts = verts = (bspDrawVert_t *)safe_malloc( m.width * m.height * sizeof( m.verts[0] ) );
if( m.width < 0 || m.width > MAX_PATCH_SIZE || m.height < 0 || m.height > MAX_PATCH_SIZE )
Error( "ParsePatch: bad size" );
MatchToken( "(" );
for( j = 0; j < m.width ; j++ )
{
MatchToken( "(" );
for( i = 0; i < m.height ; i++ )
{
Parse1DMatrix( 5, verts[ i * m.width + j ].xyz );
/* ydnar: fix colors */
for( k = 0; k < MAX_LIGHTMAPS; k++ )
{
verts[ i * m.width + j ].color[ k ][ 0 ] = 255;
verts[ i * m.width + j ].color[ k ][ 1 ] = 255;
verts[ i * m.width + j ].color[ k ][ 2 ] = 255;
verts[ i * m.width + j ].color[ k ][ 3 ] = 255;
}
}
MatchToken( ")" );
}
MatchToken( ")" );
// if brush primitives format, we may have some epairs to ignore here
GetToken(qtrue);
if (g_bBrushPrimit!=BPRIMIT_OLDBRUSHES && strcmp(token,"}"))
{
// NOTE: we leak that!
ep = ParseEPair();
}
else
UnGetToken();
MatchToken( "}" );
MatchToken( "}" );
/* short circuit */
if( noCurveBrushes || onlyLights )
return;
/* ydnar: delete and warn about degenerate patches */
j = (m.width * m.height);
VectorClear( delta );
delta[ 3 ] = 0;
degenerate = qtrue;
/* find first valid vector */
for( i = 1; i < j && delta[ 3 ] == 0; i++ )
{
VectorSubtract( m.verts[ 0 ].xyz, m.verts[ i ].xyz, delta );
delta[ 3 ] = VectorNormalize( delta, delta );
}
/* secondary degenerate test */
if( delta[ 3 ] == 0 )
degenerate = qtrue;
else
{
/* if all vectors match this or are zero, then this is a degenerate patch */
for( i = 1; i < j && degenerate == qtrue; i++ )
{
VectorSubtract( m.verts[ 0 ].xyz, m.verts[ i ].xyz, delta2 );
delta2[ 3 ] = VectorNormalize( delta2, delta2 );
if( delta2[ 3 ] != 0 )
{
/* create inverse vector */
VectorCopy( delta2, delta3 );
delta3[ 3 ] = delta2[ 3 ];
VectorNegate( delta3, delta3 );
/* compare */
if( VectorCompare( delta, delta2 ) == qfalse && VectorCompare( delta, delta3 ) == qfalse )
degenerate = qfalse;
}
}
}
/* warn and select degenerate patch */
if( degenerate )
{
Sys_Warning( mapEnt->mapEntityNum, entitySourceBrushes, "Degenerate patch" );
free( m.verts );
return;
}
/* find longest curve on the mesh */
longestCurve = 0.0f;
maxIterations = 0;
for( j = 0; j + 2 < m.width; j += 2 )
{
for( i = 0; i + 2 < m.height; i += 2 )
{
ExpandLongestCurve( &longestCurve, verts[ i * m.width + j ].xyz, verts[ i * m.width + (j + 1) ].xyz, verts[ i * m.width + (j + 2) ].xyz ); /* row */
ExpandLongestCurve( &longestCurve, verts[ i * m.width + j ].xyz, verts[ (i + 1) * m.width + j ].xyz, verts[ (i + 2) * m.width + j ].xyz ); /* col */
ExpandMaxIterations( &maxIterations, patchSubdivisions, verts[ i * m.width + j ].xyz, verts[ i * m.width + (j + 1) ].xyz, verts[ i * m.width + (j + 2) ].xyz ); /* row */
ExpandMaxIterations( &maxIterations, patchSubdivisions, verts[ i * m.width + j ].xyz, verts[ (i + 1) * m.width + j ].xyz, verts[ (i + 2) * m.width + j ].xyz ); /* col */
}
}
/* allocate patch mesh */
pm = (parseMesh_t *)safe_malloc( sizeof( *pm ) );
memset( pm, 0, sizeof( *pm ) );
/* ydnar: add entity/brush numbering */
pm->entityNum = mapEnt->mapEntityNum;
pm->mapEntityNum = mapEnt->mapEntityNum;
pm->brushNum = entitySourceBrushes;
/* set shader */
sprintf( shader, "textures/%s", texture );
pm->shaderInfo = ShaderInfoForShader( shader );
/* set mesh */
pm->mesh = m;
/* set longest curve */
pm->longestCurve = longestCurve;
pm->maxIterations = maxIterations;
/* link to the entity */
pm->next = mapEnt->patches;
mapEnt->patches = pm;
}
