- added support for loading DeepBSP's V4 nodes.

- disabled writing the nodes with the dumpmap command. ZDoom doesn't need the nodes to load a map and this only worked if the original
  map had standard nodes but trying to write out nodes loaded from any other format would have caused broken data.

SVN r2285 (trunk)

src/doomdata.h

@@ -29,6 +29,7 @@
 
 // Some global defines, that configure the game.
 #include "doomdef.h"
+#include "m_swap.h"
 
 //
 // Map level types.
@@ -220,6 +221,13 @@ struct mapsubsector_t
 	WORD	firstseg;	// index of first one, segs are stored sequentially
 };
 
+#pragma pack(1)
+struct mapsubsector4_t
+{
+	WORD	numsegs;
+	DWORD	firstseg;	// index of first one, segs are stored sequentially
+};
+#pragma pack()
 
 // LineSeg, generated by splitting LineDefs
 // using partition lines selected by BSP builder.
@@ -231,6 +239,22 @@ struct mapseg_t
 	WORD	linedef;
 	SWORD	side;
 	SWORD	offset;
+
+	int V1() { return LittleShort(v1); }
+	int V2() { return LittleShort(v2); }
+};
+
+struct mapseg4_t 
+{
+	SDWORD v1;
+	SDWORD v2;
+	SWORD angle;
+	WORD linedef;
+	SWORD side;
+	SWORD offset;
+
+	int V1() { return LittleLong(v1); }
+	int V2() { return LittleLong(v2); }
 };
 
 
@@ -238,18 +262,40 @@ struct mapseg_t
 // BSP node structure.
 
 // Indicate a leaf.
-#define NF_SUBSECTOR	0x8000
 
 struct mapnode_t
 {
+	enum
+	{
+		NF_SUBSECTOR = 0x8000,
+		NF_LUMPOFFSET = 0
+	};
 	SWORD 	x,y,dx,dy;	// partition line
 	SWORD 	bbox[2][4];	// bounding box for each child
 	// If NF_SUBSECTOR is or'ed in, it's a subsector,
 	// else it's a node of another subtree.
 	WORD 	children[2];
+
+	DWORD Child(int num) { return LittleShort(children[num]); }
 };
 
 
+struct mapnode4_t
+{
+	enum
+	{
+		NF_SUBSECTOR = 0x80000000,
+		NF_LUMPOFFSET = 8
+	};
+	SWORD 	x,y,dx,dy;	// partition line
+	SWORD 	bbox[2][4];	// bounding box for each child
+	// If NF_SUBSECTOR is or'ed in, it's a subsector,
+	// else it's a node of another subtree.
+	DWORD 	children[2];
+
+	DWORD Child(int num) { return LittleLong(children[num]); }
+};
+
 
 
 // Thing definition, position, orientation and type,