Separate retrieval of nodetype and nodes lump into its own function (Function. Not file. Sorry.)
This commit is contained in:
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8032054a47
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0aed60f4de
115
src/p_setup.c
115
src/p_setup.c
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@ -1473,9 +1473,62 @@ typedef enum {
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NT_ZGL2,
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NT_ZGL2,
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NT_XGL3,
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NT_XGL3,
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NT_ZGL3,
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NT_ZGL3,
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NT_UNSUPPORTED
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NT_UNSUPPORTED,
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NUMNODETYPES
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} nodetype_t;
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} nodetype_t;
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// Find out the BSP format.
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static nodetype_t P_GetNodetype(const virtres_t *virt, virtlump_t *virtnodes)
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{
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boolean supported[NUMNODETYPES];
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nodetype_t nodetype = NT_UNSUPPORTED;
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char signature[4 + 1];
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if (vres_Find(virt, "TEXTMAP"))
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{
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virtnodes = vres_Find(virt, "ZNODES");
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supported[NT_XGLN] = supported[NT_XGL3] = true;
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}
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else
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{
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virtlump_t *virtsegs = vres_Find(virt, "SEGS");
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virtlump_t *virtssectors;
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if (virtsegs && virtsegs->size)
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return NT_DOOM; // Traditional map format BSP tree.
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virtssectors = vres_Find(virt, "SSECTORS");
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if (virtssectors && virtssectors->size)
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{ // Possibly GL nodes: NODES ignored, SSECTORS takes precedence as nodes lump, (It is confusing yeah) and has a signature.
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virtnodes = virtssectors;
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supported[NT_XGLN] = supported[NT_ZGLN] = supported[NT_XGL3] = true;
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}
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else
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{ // Possibly ZDoom extended nodes: SSECTORS is empty, NODES has a signature.
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virtnodes = vres_Find(virt, "NODES");
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supported[NT_XNOD] = supported[NT_ZNOD] = true;
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}
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M_Memcpy(signature, virtnodes->data, 4);
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signature[4] = '\0';
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virtnodes->data += 4;
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}
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if (!strcmp(signature, "XNOD"))
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nodetype = NT_XNOD;
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else if (!strcmp(signature, "ZNOD"))
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nodetype = NT_ZNOD;
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else if (!strcmp(signature, "XGLN"))
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nodetype = NT_XGLN;
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else if (!strcmp(signature, "ZGLN"))
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nodetype = NT_ZGLN;
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else if (!strcmp(signature, "XGL3"))
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nodetype = NT_XGL3;
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return supported[nodetype] ? nodetype : NT_UNSUPPORTED;
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}
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static void P_LoadExtendedNodes(UINT8 *data, nodetype_t nodetype)
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static void P_LoadExtendedNodes(UINT8 *data, nodetype_t nodetype)
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{
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{
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size_t i, j, k;
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size_t i, j, k;
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@ -1680,60 +1733,16 @@ static void P_LoadExtendedNodes(UINT8 *data, nodetype_t nodetype)
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static void P_LoadMapBSP(const virtres_t *virt)
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static void P_LoadMapBSP(const virtres_t *virt)
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{
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{
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virtlump_t* virtssectors = vres_Find(virt, "SSECTORS");
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virtlump_t *virtnodes = NULL;
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virtlump_t* virtsegs = vres_Find(virt, "SEGS");
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nodetype_t nodetype = P_GetNodetype(virt, virtnodes);
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virtlump_t* virtnodes = vres_Find(virt, "NODES");
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nodetype_t nodetype = NT_UNSUPPORTED;
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// Find out the BSP format.
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if (vres_Find(virt, "TEXTMAP"))
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{
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virtnodes = vres_Find(virt, "ZNODES");
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if (!memcmp(virtnodes->data, "XGLN", 4))
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nodetype = NT_XGLN;
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else if (!memcmp(virtnodes->data, "XGL3", 4))
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nodetype = NT_XGL3;
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}
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else
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{
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if (!virtsegs || !virtsegs->size)
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{
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// Possibly ZDoom extended nodes: SSECTORS is empty, NODES has a signature.
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if (!virtssectors || !virtssectors->size)
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{
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if (!memcmp(virtnodes->data, "XNOD", 4))
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nodetype = NT_XNOD;
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else if (!memcmp(virtnodes->data, "ZNOD", 4)) // Compressed variant.
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nodetype = NT_ZNOD;
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}
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// Possibly GL nodes: NODES ignored, SSECTORS takes precedence as nodes lump, (It is confusing yeah) and has a signature.
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else
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{
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if (!memcmp(virtssectors->data, "XGLN", 4))
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{
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virtnodes = virtssectors;
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nodetype = NT_XGLN;
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}
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else if (!memcmp(virtssectors->data, "ZGLN", 4)) // Compressed variant.
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{
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virtnodes = virtssectors;
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nodetype = NT_ZGLN;
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}
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else if (!memcmp(virtssectors->data, "XGL3", 4)) // Compressed variant.
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{
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virtnodes = virtssectors;
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nodetype = NT_XGL3;
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}
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}
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}
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else // Traditional map format BSP tree.
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nodetype = NT_DOOM;
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}
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switch (nodetype)
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switch (nodetype)
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{
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{
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case NT_DOOM:
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case NT_DOOM:
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{
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virtlump_t *virtssectors = vres_Find(virt, "SSECTORS");
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virtlump_t *virtsegs = vres_Find(virt, "SEGS");
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numsubsectors = virtssectors->size / sizeof(mapsubsector_t);
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numsubsectors = virtssectors->size / sizeof(mapsubsector_t);
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numnodes = virtnodes->size / sizeof(mapnode_t);
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numnodes = virtnodes->size / sizeof(mapnode_t);
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numsegs = virtsegs->size / sizeof(mapseg_t);
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numsegs = virtsegs->size / sizeof(mapseg_t);
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@ -1753,11 +1762,11 @@ static void P_LoadMapBSP(const virtres_t *virt)
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P_LoadNodes(virtnodes->data);
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P_LoadNodes(virtnodes->data);
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P_LoadSegs(virtsegs->data);
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P_LoadSegs(virtsegs->data);
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break;
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break;
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}
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case NT_XNOD:
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case NT_XNOD:
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case NT_XGLN:
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case NT_XGLN:
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case NT_XGL3:
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case NT_XGL3:
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P_LoadExtendedNodes(virtnodes->data + 4, nodetype);
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P_LoadExtendedNodes(virtnodes->data, nodetype);
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break;
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break;
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default:
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default:
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CONS_Alert(CONS_WARNING, "Unsupported BSP format detected.\n");
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CONS_Alert(CONS_WARNING, "Unsupported BSP format detected.\n");
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