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- Added a new node format (ZGL3/XGL3) which allows node splitters to have fractional precision.

Browse source 
This can only happen with UDMF, and since UDMF is restricted to GL nodes, there's no need for a
  non-GL version of these nodes.
- Added additional debug output.
- Remove the outdated zdbsp.vcproj project file.

SVN r3981 (trunk)
This commit is contained in:
Randy Heit 2012-12-07 06:19:25 +00:00
parent 36224bad4b
commit 732d9bc710
10 changed files with 208 additions and 562 deletions
Show stats Download patch file Download diff file Expand all files Collapse all files

9
doomdata.h
View file

@ -167,13 +167,20 @@ struct MapNode
WORD children[2];
};
struct MapNodeEx
struct MapNodeExO
{
short x,y,dx,dy;
short bbox[2][4];
DWORD children[2];
};
struct MapNodeEx
{
int x,y,dx,dy;
short bbox[2][4];
DWORD children[2];
};
struct MapThing
{
short x;

6
nodebuild.cpp
View file

@ -206,14 +206,16 @@ void FNodeBuilder::CreateSubsectorsForReal ()
}
for (unsigned int i = sub.firstline; i < SegList.Size(); ++i)
{
D(printf (" Seg %5d%c%d(%5d,%5d)-%d(%5d,%5d)\n", SegList[i].SegPtr - &Segs[0],
D(printf (" Seg %5d%c%d(%5d,%5d)-%d(%5d,%5d) [%08x,%08x]-[%08x,%08x]\n", SegList[i].SegPtr - &Segs[0],
SegList[i].SegPtr->linedef == -1 ? '+' : ' ',
SegList[i].SegPtr->v1,
Vertices[SegList[i].SegPtr->v1].x>>16,
Vertices[SegList[i].SegPtr->v1].y>>16,
SegList[i].SegPtr->v2,
Vertices[SegList[i].SegPtr->v2].x>>16,
Vertices[SegList[i].SegPtr->v2].y>>16));
Vertices[SegList[i].SegPtr->v2].y>>16,
Vertices[SegList[i].SegPtr->v1].x, Vertices[SegList[i].SegPtr->v1].y,
Vertices[SegList[i].SegPtr->v2].x, Vertices[SegList[i].SegPtr->v2].y));
SegList[i].SegNum = DWORD(SegList[i].SegPtr - &Segs[0]);
}
Subsectors.Push (sub);

1
nodebuild.h
View file

@ -254,6 +254,7 @@ private:
double InterceptVector (const node_t &splitter, const FPrivSeg &seg);
void PrintSet (int l, DWORD set);
void DumpNodes(MapNodeEx *outNodes, int nodeCount);
};
// Points within this distance of a line will be considered on the line.

72
nodebuild_extract.cpp
View file

@ -47,10 +47,10 @@ void FNodeBuilder::GetGLNodes (MapNodeEx *&outNodes, int &nodeCount,
const node_t *orgnode = &Nodes[i];
MapNodeEx *newnode = &outNodes[i];
newnode->x = short(orgnode->x >> FRACBITS);
newnode->y = short(orgnode->y >> FRACBITS);
newnode->dx = short(orgnode->dx >> FRACBITS);
newnode->dy = short(orgnode->dy >> FRACBITS);
newnode->x = orgnode->x;
newnode->y = orgnode->y;
newnode->dx = orgnode->dx;
newnode->dy = orgnode->dy;
for (j = 0; j < 2; ++j)
{
@ -82,6 +82,8 @@ void FNodeBuilder::GetGLNodes (MapNodeEx *&outNodes, int &nodeCount,
outSegs[i].partner = Segs[outSegs[i].partner].storedseg;
}
}
D(DumpNodes(outNodes, nodeCount));
}
int FNodeBuilder::CloseSubsector (TArray<MapSegGLEx> &segs, int subsector)
@ -134,12 +136,14 @@ int FNodeBuilder::CloseSubsector (TArray<MapSegGLEx> &segs, int subsector)
{
seg = &Segs[SegList[j].SegNum];
angle_t ang = PointToAngle (Vertices[seg->v1].x - midx, Vertices[seg->v1].y - midy);
printf ("%d%c %5d(%5d,%5d)->%5d(%5d,%5d) - %3.3f %d,%d\n", j,
printf ("%d%c %5d(%5d,%5d)->%5d(%5d,%5d) - %3.5f %d,%d [%08x,%08x]-[%08x,%08x]\n", j,
seg->linedef == -1 ? '+' : ':',
seg->v1, Vertices[seg->v1].x>>16, Vertices[seg->v1].y>>16,
seg->v2, Vertices[seg->v2].x>>16, Vertices[seg->v2].y>>16,
double(ang/2)*180/(1<<30),
seg->planenum, seg->planefront);
seg->planenum, seg->planefront,
Vertices[seg->v1].x, Vertices[seg->v1].y,
Vertices[seg->v2].x, Vertices[seg->v2].y);
}
#endif
@ -230,12 +234,16 @@ int FNodeBuilder::CloseSubsector (TArray<MapSegGLEx> &segs, int subsector)
printf ("Output GL subsector %d:\n", subsector);
for (i = segs.Size() - count; i < (int)segs.Size(); ++i)
{
printf (" Seg %5d%c(%5d,%5d)-(%5d,%5d)\n", i,
printf (" Seg %5d%c(%5d,%5d)-(%5d,%5d) [%08x,%08x]-[%08x,%08x]\n", i,
segs[i].linedef == NO_INDEX ? '+' : ' ',
Vertices[segs[i].v1].x>>16,
Vertices[segs[i].v1].y>>16,
Vertices[segs[i].v2].x>>16,
Vertices[segs[i].v2].y>>16);
Vertices[segs[i].v2].y>>16,
Vertices[segs[i].v1].x,
Vertices[segs[i].v1].y,
Vertices[segs[i].v2].x,
Vertices[segs[i].v2].y);
}
#endif
@ -406,25 +414,9 @@ void FNodeBuilder::GetNodes (MapNodeEx *&outNodes, int &nodeCount,
outSegs = new MapSegEx[segCount];
memcpy (outSegs, &segs[0], segCount*sizeof(MapSegEx));
D(DumpNodes(outNodes, nodeCount));
#ifdef DD
int i, j;
for (i = 0; i < nodeCount; ++i)
{
printf("Node %d:\n", i);
for (j = 1; j >= 0; --j)
{
if (outNodes[i].children[j] & NFX_SUBSECTOR)
{
printf(" subsector %d\n", outNodes[i].children[j] & ~NFX_SUBSECTOR);
}
else
{
printf(" node %d\n", outNodes[i].children[j]);
}
}
}
for (i = 0; i < segCount; ++i)
for (int i = 0; i < segCount; ++i)
{
printf("Seg %d: v1(%d) -> v2(%d)\n", i, outSegs[i].v1, outSegs[i].v2);
}
@ -451,10 +443,10 @@ int FNodeBuilder::RemoveMinisegs (MapNodeEx *nodes,
int child1 = RemoveMinisegs (nodes, segs, subs, orgnode->intchildren[1], newnode->bbox[1]);
newnode->x = orgnode->x >> FRACBITS;
newnode->y = orgnode->y >> FRACBITS;
newnode->dx = orgnode->dx >> FRACBITS;
newnode->dy = orgnode->dy >> FRACBITS;
newnode->x = orgnode->x;
newnode->y = orgnode->y;
newnode->dx = orgnode->dx;
newnode->dy = orgnode->dy;
newnode->children[0] = child0;
newnode->children[1] = child1;
@ -558,3 +550,23 @@ void FNodeBuilder::AddSegToShortBBox (short bbox[4], const FPrivSeg *seg)
if (v2y < bbox[BOXBOTTOM]) bbox[BOXBOTTOM] = v2y;
if (v2y > bbox[BOXTOP]) bbox[BOXTOP] = v2y;
}
void FNodeBuilder::DumpNodes(MapNodeEx *outNodes, int nodeCount)
{
for (unsigned int i = 0; i < Nodes.Size(); ++i)
{
printf("Node %d: Splitter[%08x,%08x] [%08x,%08x]\n", i,
outNodes[i].x, outNodes[i].y, outNodes[i].dx, outNodes[i].dy);
for (int j = 1; j >= 0; --j)
{
if (outNodes[i].children[j] & NFX_SUBSECTOR)
{
printf(" subsector %d\n", outNodes[i].children[j] & ~NFX_SUBSECTOR);
}
else
{
printf(" node %d\n", outNodes[i].children[j]);
}
}
}
}

5
nodebuild_utility.cpp
View file

@ -143,8 +143,9 @@ int FNodeBuilder::CreateSeg (int linenum, int sidenum)
segnum = (int)Segs.Push (seg);
Vertices[seg.v1].segs = segnum;
Vertices[seg.v2].segs2 = segnum;
D(printf("Seg %4d: From line %d, side %s (%5d,%5d)-(%5d,%5d)\n", segnum, linenum, sidenum ? "back " : "front",
Vertices[seg.v1].x>>16, Vertices[seg.v1].y>>16, Vertices[seg.v2].x>>16, Vertices[seg.v2].y>>16));
D(printf("Seg %4d: From line %d, side %s (%5d,%5d)-(%5d,%5d) [%08x,%08x]-[%08x,%08x]\n", segnum, linenum, sidenum ? "back " : "front",
Vertices[seg.v1].x>>16, Vertices[seg.v1].y>>16, Vertices[seg.v2].x>>16, Vertices[seg.v2].y>>16,
Vertices[seg.v1].x, Vertices[seg.v1].y, Vertices[seg.v2].x, Vertices[seg.v2].y));
return segnum;
}

107
processor.cpp
View file

@ -1147,16 +1147,20 @@ void FProcessor::WriteNodes2 (FWadWriter &out, const char *name, const MapNodeEx
void FProcessor::WriteNodes5 (FWadWriter &out, const char *name, const MapNodeEx *zaNodes, int count) const
{
int i, j;
MapNodeEx *const nodes = new MapNodeEx[count * sizeof(MapNodeEx)];
MapNodeExO *const nodes = new MapNodeExO[count * sizeof(MapNodeEx)];
for (i = 0; i < count; ++i)
{
const short *inodes = &zaNodes[i].x;
short *coord = &nodes[i].x;
for (j = 0; j < 4+2*4; ++j)
const short *inodes = &zaNodes[i].bbox[0][0];
short *coord = &nodes[i].bbox[0][0];
for (j = 0; j < 2*4; ++j)
{
coord[j] = LittleShort(inodes[j]);
}
nodes[i].x = LittleShort(zaNodes[i].x >> 16);
nodes[i].y = LittleShort(zaNodes[i].y >> 16);
nodes[i].dx = LittleShort(zaNodes[i].dx >> 16);
nodes[i].dy = LittleShort(zaNodes[i].dy >> 16);
for (j = 0; j < 2; ++j)
{
nodes[i].children[j] = LittleLong(zaNodes[i].children[j]);
@ -1370,12 +1374,14 @@ void FProcessor::WriteBSPZ (FWadWriter &out, const char *label)
WriteVerticesZ (zout, &Level.Vertices[Level.NumOrgVerts], Level.NumOrgVerts, Level.NumVertices - Level.NumOrgVerts);
WriteSubsectorsZ (zout, Level.Subsectors, Level.NumSubsectors);
WriteSegsZ (zout, Level.Segs, Level.NumSegs);
WriteNodesZ (zout, Level.Nodes, Level.NumNodes);
WriteNodesZ (zout, Level.Nodes, Level.NumNodes, 1);
}
void FProcessor::WriteGLBSPZ (FWadWriter &out, const char *label)
{
ZLibOut zout (out);
bool fracsplitters = CheckForFracSplitters(Level.GLNodes, Level.NumGLNodes);
int nodever;
if (!CompressGLNodes)
{
@ -1383,18 +1389,25 @@ void FProcessor::WriteGLBSPZ (FWadWriter &out, const char *label)
}
out.StartWritingLump (label);
if (Level.NumLines() < 65535)
if (fracsplitters)
{
out.AddToLump ("ZGL3", 4);
nodever = 3;
}
else if (Level.NumLines() < 65535)
{
out.AddToLump ("ZGLN", 4);
nodever = 1;
}
else
{
out.AddToLump ("ZGL2", 4);
nodever = 2;
}
WriteVerticesZ (zout, &Level.GLVertices[Level.NumOrgVerts], Level.NumOrgVerts, Level.NumGLVertices - Level.NumOrgVerts);
WriteSubsectorsZ (zout, Level.GLSubsectors, Level.NumGLSubsectors);
WriteGLSegsZ (zout, Level.GLSegs, Level.NumGLSegs);
WriteNodesZ (zout, Level.GLNodes, Level.NumGLNodes);
WriteGLSegsZ (zout, Level.GLSegs, Level.NumGLSegs, nodever);
WriteNodesZ (zout, Level.GLNodes, Level.NumGLNodes, nodever);
}
void FProcessor::WriteVerticesZ (ZLibOut &out, const WideVertex *verts, int orgverts, int newverts)
@ -1430,11 +1443,11 @@ void FProcessor::WriteSegsZ (ZLibOut &out, const MapSegEx *segs, int numsegs)
}
}
void FProcessor::WriteGLSegsZ (ZLibOut &out, const MapSegGLEx *segs, int numsegs)
void FProcessor::WriteGLSegsZ (ZLibOut &out, const MapSegGLEx *segs, int numsegs, int nodever)
{
out << (DWORD)numsegs;
if (Level.NumLines() < 65535)
if (nodever < 2)
{
for (int i = 0; i < numsegs; ++i)
{
@ -1456,16 +1469,26 @@ void FProcessor::WriteGLSegsZ (ZLibOut &out, const MapSegGLEx *segs, int numsegs
}
}
void FProcessor::WriteNodesZ (ZLibOut &out, const MapNodeEx *nodes, int numnodes)
void FProcessor::WriteNodesZ (ZLibOut &out, const MapNodeEx *nodes, int numnodes, int nodever)
{
out << (DWORD)numnodes;
for (int i = 0; i < numnodes; ++i)
{
out << (SWORD)nodes[i].x
<< (SWORD)nodes[i].y
<< (SWORD)nodes[i].dx
<< (SWORD)nodes[i].dy;
if (nodever < 3)
{
out << (SWORD)(nodes[i].x >> 16)
<< (SWORD)(nodes[i].y >> 16)
<< (SWORD)(nodes[i].dx >> 16)
<< (SWORD)(nodes[i].dy >> 16);
}
else
{
out << (DWORD)nodes[i].x
<< (DWORD)nodes[i].y
<< (DWORD)nodes[i].dx
<< (DWORD)nodes[i].dy;
}
for (int j = 0; j < 2; ++j)
{
for (int k = 0; k < 4; ++k)
@ -1490,29 +1513,39 @@ void FProcessor::WriteBSPX (FWadWriter &out, const char *label)
WriteVerticesX (out, &Level.Vertices[Level.NumOrgVerts], Level.NumOrgVerts, Level.NumVertices - Level.NumOrgVerts);
WriteSubsectorsX (out, Level.Subsectors, Level.NumSubsectors);
WriteSegsX (out, Level.Segs, Level.NumSegs);
WriteNodesX (out, Level.Nodes, Level.NumNodes);
WriteNodesX (out, Level.Nodes, Level.NumNodes, 1);
}
void FProcessor::WriteGLBSPX (FWadWriter &out, const char *label)
{
bool fracsplitters = CheckForFracSplitters(Level.GLNodes, Level.NumGLNodes);
int nodever;
if (!CompressGLNodes)
{
printf (" GL Nodes are so big that extended format has been forced.\n");
}
out.StartWritingLump (label);
if (Level.NumLines() < 65535)
if (fracsplitters)
{
out.AddToLump ("XGL3", 4);
nodever = 3;
}
else if (Level.NumLines() < 65535)
{
out.AddToLump ("XGLN", 4);
nodever = 1;
}
else
{
out.AddToLump ("XGL2", 4);
nodever = 2;
}
WriteVerticesX (out, &Level.GLVertices[Level.NumOrgVerts], Level.NumOrgVerts, Level.NumGLVertices - Level.NumOrgVerts);
WriteSubsectorsX (out, Level.GLSubsectors, Level.NumGLSubsectors);
WriteGLSegsX (out, Level.GLSegs, Level.NumGLSegs);
WriteNodesX (out, Level.GLNodes, Level.NumGLNodes);
WriteGLSegsX (out, Level.GLSegs, Level.NumGLSegs, nodever);
WriteNodesX (out, Level.GLNodes, Level.NumGLNodes, nodever);
}
void FProcessor::WriteVerticesX (FWadWriter &out, const WideVertex *verts, int orgverts, int newverts)
@ -1548,11 +1581,11 @@ void FProcessor::WriteSegsX (FWadWriter &out, const MapSegEx *segs, int numsegs)
}
}
void FProcessor::WriteGLSegsX (FWadWriter &out, const MapSegGLEx *segs, int numsegs)
void FProcessor::WriteGLSegsX (FWadWriter &out, const MapSegGLEx *segs, int numsegs, int nodever)
{
out << (DWORD)numsegs;
if (Level.NumLines() < 65535)
if (nodever < 2)
{
for (int i = 0; i < numsegs; ++i)
{
@ -1574,16 +1607,26 @@ void FProcessor::WriteGLSegsX (FWadWriter &out, const MapSegGLEx *segs, int nums
}
}
void FProcessor::WriteNodesX (FWadWriter &out, const MapNodeEx *nodes, int numnodes)
void FProcessor::WriteNodesX (FWadWriter &out, const MapNodeEx *nodes, int numnodes, int nodever)
{
out << (DWORD)numnodes;
for (int i = 0; i < numnodes; ++i)
{
out << (SWORD)nodes[i].x
<< (SWORD)nodes[i].y
<< (SWORD)nodes[i].dx
<< (SWORD)nodes[i].dy;
if (nodever < 3)
{
out << (SWORD)(nodes[i].x >> 16)
<< (SWORD)(nodes[i].y >> 16)
<< (SWORD)(nodes[i].dx >> 16)
<< (SWORD)(nodes[i].dy >> 16);
}
else
{
out << (DWORD)nodes[i].x
<< (DWORD)nodes[i].y
<< (DWORD)nodes[i].dx
<< (DWORD)nodes[i].dy;
}
for (int j = 0; j < 2; ++j)
{
for (int k = 0; k < 4; ++k)
@ -1596,6 +1639,18 @@ void FProcessor::WriteNodesX (FWadWriter &out, const MapNodeEx *nodes, int numno
}
}
bool FProcessor::CheckForFracSplitters(const MapNodeEx *nodes, int numnodes)
{
for (int i = 0; i < numnodes; ++i)
{
if (0 != ((nodes[i].x | nodes[i].y | nodes[i].dx | nodes[i].dy) & 0x0000FFFF))
{
return true;
}
}
return false;
}
// zlib lump writer ---------------------------------------------------------
ZLibOut::ZLibOut (FWadWriter &out)

9
processor.h
View file

@ -56,6 +56,7 @@ private:
MapSegGLEx *SegGLsToEx (const MapSegGL *segs, int count);
BYTE *FixReject (const BYTE *oldreject);
bool CheckForFracSplitters(const MapNodeEx *nodes, int count);
void WriteLines (FWadWriter &out);
void WriteVertices (FWadWriter &out, int count);
@ -79,8 +80,8 @@ private:
void WriteVerticesZ (ZLibOut &out, const WideVertex *verts, int orgverts, int newverts);
void WriteSubsectorsZ (ZLibOut &out, const MapSubsectorEx *subs, int numsubs);
void WriteSegsZ (ZLibOut &out, const MapSegEx *segs, int numsegs);
void WriteGLSegsZ (ZLibOut &out, const MapSegGLEx *segs, int numsegs);
void WriteNodesZ (ZLibOut &out, const MapNodeEx *nodes, int numnodes);
void WriteGLSegsZ (ZLibOut &out, const MapSegGLEx *segs, int numsegs, int nodever);
void WriteNodesZ (ZLibOut &out, const MapNodeEx *nodes, int numnodes, int nodever);
void WriteBSPX (FWadWriter &out, const char *label);
void WriteGLBSPX (FWadWriter &out, const char *label);
@ -88,8 +89,8 @@ private:
void WriteVerticesX (FWadWriter &out, const WideVertex *verts, int orgverts, int newverts);
void WriteSubsectorsX (FWadWriter &out, const MapSubsectorEx *subs, int numsubs);
void WriteSegsX (FWadWriter &out, const MapSegEx *segs, int numsegs);
void WriteGLSegsX (FWadWriter &out, const MapSegGLEx *segs, int numsegs);
void WriteNodesX (FWadWriter &out, const MapNodeEx *nodes, int numnodes);
void WriteGLSegsX (FWadWriter &out, const MapSegGLEx *segs, int numsegs, int nodever);
void WriteNodesX (FWadWriter &out, const MapNodeEx *nodes, int numnodes, int nodever);
void WriteNodes2 (FWadWriter &out, const char *name, const MapNodeEx *zaNodes, int count) const;
void WriteSSectors2 (FWadWriter &out, const char *name, const MapSubsectorEx *zaSubs, int count) const;

24
view.cpp
View file

@ -392,6 +392,20 @@ static void DrawOutsideNode (HDC dc, int node)
}
}
static void DrawSplitter (HDC dc, MapNodeEx *node)
{
int dx = node->dx, dy = node->dy;
// If the splitter is particularly short, make it longer to stand out
while (abs(dx) < (20 << 16) && abs(dy) < (20 << 16))
{
dx <<= 1;
dy <<= 1;
}
SelectObject (dc, Splitter);
MoveToEx (dc, (node->x - dx) >> 16, (node->y - dy) >> 16, NULL);
LineTo (dc, (node->x + 2*dx) >> 16, (node->y + 2*dy) >> 16);
}
static void DrawLevelNodes (HDC dc)
{
HPEN oldPen;
@ -412,17 +426,13 @@ static void DrawLevelNodes (HDC dc)
{
DrawOutsideNode (dc, Level->NumNodes - 1);
DrawNode (dc, Level->NumNodes - 1);
SelectObject (dc, Splitter);
MoveToEx (dc, Level->Nodes[DesiredNode].x - Level->Nodes[DesiredNode].dx, Level->Nodes[DesiredNode].y - Level->Nodes[DesiredNode].dy, NULL);
LineTo (dc, Level->Nodes[DesiredNode].x + 2*Level->Nodes[DesiredNode].dx, Level->Nodes[DesiredNode].y + 2*Level->Nodes[DesiredNode].dy);
DrawSplitter (dc, &Level->Nodes[DesiredNode]);
}
else
{
DrawOutsideNode (dc, Level->NumGLNodes - 1);
DrawNode (dc, Level->NumGLNodes - 1);
SelectObject (dc, Splitter);
MoveToEx (dc, Level->GLNodes[DesiredNode].x - Level->GLNodes[DesiredNode].dx, Level->GLNodes[DesiredNode].y - Level->GLNodes[DesiredNode].dy, NULL);
LineTo (dc, Level->GLNodes[DesiredNode].x + 2*Level->GLNodes[DesiredNode].dx, Level->GLNodes[DesiredNode].y + 2*Level->GLNodes[DesiredNode].dy);
DrawSplitter (dc, &Level->GLNodes[DesiredNode]);
}
@ -496,7 +506,7 @@ static void DrawLevelSubsectors (HDC dc)
static inline int PointOnSide (int x, int y, const MapNodeEx &nd)
{
int foo = DMulScale32 (y-nd.y, nd.dx, nd.x-x, nd.dy);
int foo = DMulScale32 ((y<<16)-nd.y, nd.dx, nd.x-(x<<16), nd.dy);
return foo >= 0;
}

50
zdbsp.html
View file

@ -265,7 +265,9 @@
signature. This can be either 'ZNOD' for regular nodes or 'ZGLN' for GL nodes.
If there are more than 65534 lines in the map, the signature 'ZGL2' is used
for GL nodes instead. (Note that this can only happen with UDMF maps, because
the binary map format does not allow more lines than that.)
the binary map format does not allow more lines than that.) There is also a third
variant of 'ZGLN': 'ZGL3' is identical to 'ZGL2' but expands the node's splitter
field to fixed point coordinates.
Following the signature is the zlib data stream. For a description of its
format, see the zlib documentation. When you decompress it, the following
information is obtained in this order:</p>
@ -420,7 +422,7 @@
<td>The linedef's side this seg came from (0=front, 1=back) (ignored if no line)</td>
</tr>
</table>
<h3>GL nodes ('ZGL2' signature)</h3>
<h3>GL nodes ('ZGL2' and 'ZGL3' signature)</h3>
<table>
<tr>
<td>DWORD</td>
@ -482,7 +484,8 @@
the next seg's first vertex. The last seg's second vertex will be the same as
the first seg's first vertex.</p>
<h2>Node information</h2>
<p>This is really no different from standard nodes.</p>
<p>Only 'ZGL3' nodes structure this differently from standard nodes.</p>
<h3>All nodes formats except 'ZGL3'</h3>
<table>
<tr>
<td>DWORD</td>
@ -513,6 +516,37 @@
<td>References to child nodes or subsectors</td>
</tr>
</table>
<h3>Nodes with 'ZGL3' signature</h3>
<table>
<tr>
<td>DWORD</td>
<td><i>NumNodes</i></td>
<td>Number of nodes</td>
</tr>
<tr>
<td colspan="3" bgcolor="#dddddd">Repeat <i>NumNodes</i> times:</td>
</tr>
<tr>
<td>4 FIXEDs</td>
<td><i>X</i>, <i>Y</i>, <i>dX</i>, <i>dY</i></td>
<td>Splitter for this node</td>
</tr>
<tr>
<td>4 SWORDs</td>
<td><i>Top</i>, <i>Bottom</i>, <i>Left</i>, <i>Right</i></td>
<td>Bounding box for <i>Child0</i></td>
</tr>
<tr>
<td>4 SWORDs</td>
<td><i>Top</i>, <i>Bottom</i>, <i>Left</i>, <i>Right</i></td>
<td>Bounding box for <i>Child1</i></td>
</tr>
<tr>
<td>2 DWORDs</td>
<td><i>Child0</i>, <i>Child1</i></td>
<td>References to child nodes or subsectors</td>
</tr>
</table>
<p>As with standard nodes, a child's high bit is set to indicate that it is a
subsector and cleared to indicate that it is another node. Just remember that
the child references are stored using four bytes each instead of two.</p>
@ -528,5 +562,15 @@
compressed nodes are not used.</p>
<p>For UDMF maps, nodes a stored in the map's ZNODES lump. These will only be
'ZGLN' or 'ZGL2' format nodes. Non-GL nodes are not supported for UDMF.</p>
<h2>Extended nodes</h2>
<p>For the benefit of ports not wishing to support zlib decompression of nodes,
there are variants of the compressed node formats without compression. These
are referred to extended nodes, and differ only from their compressed counterparts
in that their contents are not compressed. They use a different signature to
distinguish them from compressed nodes:</p>
<ul><li>ZNOD -> XNOD</li>
<li>ZGLN -> XGLN</li>
<li>ZGL2 -> XGL2</li>
<li>ZGL3 -> XGL3</li></ul>
</BODY>
</HTML>

487
zdbsp.vcproj
View file

@ -1,487 +0,0 @@
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