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Implement support for ZDoom GL2 nodes

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Lactozilla 2024-06-04 18:34:38 -03:00
parent 5de350e028
commit b480f78c96
1 changed files with 50 additions and 21 deletions
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71
src/p_setup.c
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@ -3419,13 +3419,13 @@ typedef enum {
} nodetype_t;
// Find out the BSP format.
static nodetype_t P_GetNodetype(const virtres_t *virt, UINT8 **nodedata)
static nodetype_t P_GetNodetype(const virtres_t *virt, UINT8 **nodedata, char signature[4 + 1])
{
boolean supported[NUMNODETYPES] = {0};
nodetype_t nodetype = NT_UNSUPPORTED;
char signature[4 + 1];
*nodedata = NULL;
signature[0] = signature[4] = '\0';
if (udmf)
{
@ -3434,7 +3434,7 @@ static nodetype_t P_GetNodetype(const virtres_t *virt, UINT8 **nodedata)
if (virtznodes && virtznodes->size)
{
*nodedata = virtznodes->data;
supported[NT_XGLN] = supported[NT_XGL3] = true;
supported[NT_XGLN] = supported[NT_XGL2] = supported[NT_XGL3] = true;
}
}
else
@ -3456,9 +3456,9 @@ static nodetype_t P_GetNodetype(const virtres_t *virt, UINT8 **nodedata)
virtssectors = vres_Find(virt, "SSECTORS");
if (virtssectors && virtssectors->size)
{ // Possibly GL nodes: NODES ignored, SSECTORS takes precedence as nodes lump, (It is confusing yeah) and has a signature.
{ // Possibly GL nodes: NODES ignored, SSECTORS takes precedence as nodes lump (it is confusing, yeah), and has a signature.
*nodedata = virtssectors->data;
supported[NT_XGLN] = supported[NT_ZGLN] = supported[NT_XGL3] = true;
supported[NT_XGLN] = supported[NT_ZGLN] = supported[NT_XGL2] = supported[NT_XGL3] = true;
}
else
{ // Possibly ZDoom extended nodes: SSECTORS is empty, NODES has a signature.
@ -3478,19 +3478,42 @@ static nodetype_t P_GetNodetype(const virtres_t *virt, UINT8 **nodedata)
}
M_Memcpy(signature, *nodedata, 4);
signature[4] = '\0';
(*nodedata) += 4;
if (!strcmp(signature, "XNOD"))
nodetype = NT_XNOD;
else if (!strcmp(signature, "ZNOD"))
nodetype = NT_ZNOD;
else if (!strcmp(signature, "XGLN"))
nodetype = NT_XGLN;
else if (!strcmp(signature, "ZGLN"))
nodetype = NT_ZGLN;
else if (!strcmp(signature, "XGL3"))
nodetype = NT_XGL3;
// Identify node format from its starting signature.
if (memcmp(&signature[1], "NOD", 3) == 0) // ZDoom extended nodes
{
if (signature[0] == 'X')
{
nodetype = NT_XNOD; // Uncompressed
}
else if (signature[0] == 'Z')
{
nodetype = NT_ZNOD; // Compressed
}
}
else if (memcmp(&signature[1], "GL", 2) == 0) // GL nodes
{
switch (signature[0])
{
case 'X': // Uncompressed
switch (signature[3])
{
case 'N': nodetype = NT_XGLN; break; // GL nodes
case '2': nodetype = NT_XGL2; break; // Version 2 GL nodes
case '3': nodetype = NT_XGL3; break; // Version 3 GL nodes
}
break;
case 'Z': // Compressed
switch (signature[3])
{
case 'N': nodetype = NT_ZGLN; break; // GL nodes (compressed)
case '2': nodetype = NT_ZGL2; break; // Version 2 GL nodes (compressed)
case '3': nodetype = NT_ZGL3; break; // Version 3 GL nodes (compressed)
}
break;
}
}
return supported[nodetype] ? nodetype : NT_UNSUPPORTED;
}
@ -3560,6 +3583,7 @@ static boolean P_LoadExtendedSubsectorsAndSegs(UINT8 **data, nodetype_t nodetype
switch (nodetype)
{
case NT_XGLN:
case NT_XGL2:
case NT_XGL3:
for (m = 0; m < (size_t)subsectors[i].numlines; m++, k++)
{
@ -3571,7 +3595,7 @@ static boolean P_LoadExtendedSubsectorsAndSegs(UINT8 **data, nodetype_t nodetype
READUINT32((*data)); // partner, can be ignored by software renderer
if (nodetype == NT_XGL3)
if (nodetype != NT_XGLN)
{
UINT32 linenum = READUINT32((*data));
if (linenum != 0xFFFFFFFF && linenum >= numlines)
@ -3682,8 +3706,9 @@ static void P_LoadExtendedNodes(UINT8 **data, nodetype_t nodetype)
static void P_LoadMapBSP(const virtres_t *virt)
{
char signature[4 + 1];
UINT8 *nodedata = NULL;
nodetype_t nodetype = P_GetNodetype(virt, &nodedata);
nodetype_t nodetype = P_GetNodetype(virt, &nodedata, signature);
switch (nodetype)
{
@ -3715,6 +3740,7 @@ static void P_LoadMapBSP(const virtres_t *virt)
}
case NT_XNOD:
case NT_XGLN:
case NT_XGL2:
case NT_XGL3:
if (!P_LoadExtraVertices(&nodedata))
return;
@ -3723,10 +3749,13 @@ static void P_LoadMapBSP(const virtres_t *virt)
P_LoadExtendedNodes(&nodedata, nodetype);
break;
default:
CONS_Alert(CONS_WARNING, "Unsupported BSP format detected.\n");
return;
if (isprint(signature[0]) && isprint(signature[1]) && isprint(signature[2]) && isprint(signature[3]))
{
I_Error("Unsupported BSP format '%s' detected!\n", signature);
return;
}
I_Error("Unknown BSP format detected!\n");
}
return;
}
// Split from P_LoadBlockMap for convenience