+skinfile_t *Mod_LoadSkinFiles(void)
+{
+ int i, words, numtags, line, tagsetsused = false, wordsoverflow;
+ char *text;
+ const char *data;
+ skinfile_t *skinfile = NULL, *first = NULL;
+ skinfileitem_t *skinfileitem;
+ char word[10][MAX_QPATH];
+ overridetagnameset_t tagsets[MAX_SKINS];
+ overridetagname_t tags[256];
+
+/*
+sample file:
+U_bodyBox,models/players/Legoman/BikerA2.tga
+U_RArm,models/players/Legoman/BikerA1.tga
+U_LArm,models/players/Legoman/BikerA1.tga
+U_armor,common/nodraw
+U_sword,common/nodraw
+U_shield,common/nodraw
+U_homb,common/nodraw
+U_backpack,common/nodraw
+U_colcha,common/nodraw
+tag_head,
+tag_weapon,
+tag_torso,
+*/
+ memset(tagsets, 0, sizeof(tagsets));
+ memset(word, 0, sizeof(word));
+ for (i = 0;i < MAX_SKINS && (data = text = FS_LoadFile(va("%s_%i.skin", loadmodel->name, i), tempmempool, true));i++)
+ {
+ numtags = 0;
+
+ // If it's the first file we parse
+ if (skinfile == NULL)
+ {
+ skinfile = Mem_Alloc(tempmempool, sizeof(skinfile_t));
+ first = skinfile;
+ }
+ else
+ {
+ skinfile->next = Mem_Alloc(tempmempool, sizeof(skinfile_t));
+ skinfile = skinfile->next;
+ }
+ skinfile->next = NULL;
+
+ for(line = 0;;line++)
+ {
+ // parse line
+ if (!COM_ParseToken(&data, true))
+ break;
+ if (!strcmp(com_token, "\n"))
+ continue;
+ words = 0;
+ wordsoverflow = false;
+ do
+ {
+ if (words < 10)
+ strlcpy(word[words++], com_token, sizeof (word[0]));
+ else
+ wordsoverflow = true;
+ }
+ while (COM_ParseToken(&data, true) && strcmp(com_token, "\n"));
+ if (wordsoverflow)
+ {
+ Con_Printf("Mod_LoadSkinFiles: parsing error in file \"%s_%i.skin\" on line #%i: line with too many statements, skipping\n", loadmodel->name, i, line);
+ continue;
+ }
+ // words is always >= 1
+ if (!strcmp(word[0], "replace"))
+ {
+ if (words == 3)
+ {
+ Con_DPrintf("Mod_LoadSkinFiles: parsed mesh \"%s\" shader replacement \"%s\"\n", word[1], word[2]);
+ skinfileitem = Mem_Alloc(tempmempool, sizeof(skinfileitem_t));
+ skinfileitem->next = skinfile->items;
+ skinfile->items = skinfileitem;
+ strlcpy (skinfileitem->name, word[1], sizeof (skinfileitem->name));
+ strlcpy (skinfileitem->replacement, word[2], sizeof (skinfileitem->replacement));
+ }
+ else
+ Con_Printf("Mod_LoadSkinFiles: parsing error in file \"%s_%i.skin\" on line #%i: wrong number of parameters to command \"%s\", see documentation in DP_GFX_SKINFILES extension in dpextensions.qc\n", loadmodel->name, i, line, word[0]);
+ }
+ else if (words == 2 && !strcmp(word[1], ","))
+ {
+ // tag name, like "tag_weapon,"
+ Con_DPrintf("Mod_LoadSkinFiles: parsed tag #%i \"%s\"\n", numtags, word[0]);
+ memset(tags + numtags, 0, sizeof(tags[numtags]));
+ strlcpy (tags[numtags].name, word[0], sizeof (tags[numtags].name));
+ numtags++;
+ }
+ else if (words == 3 && !strcmp(word[1], ","))
+ {
+ // mesh shader name, like "U_RArm,models/players/Legoman/BikerA1.tga"
+ Con_DPrintf("Mod_LoadSkinFiles: parsed mesh \"%s\" shader replacement \"%s\"\n", word[0], word[2]);
+ skinfileitem = Mem_Alloc(tempmempool, sizeof(skinfileitem_t));
+ skinfileitem->next = skinfile->items;
+ skinfile->items = skinfileitem;
+ strlcpy (skinfileitem->name, word[0], sizeof (skinfileitem->name));
+ strlcpy (skinfileitem->replacement, word[2], sizeof (skinfileitem->replacement));
+ }
+ else
+ Con_Printf("Mod_LoadSkinFiles: parsing error in file \"%s_%i.skin\" on line #%i: does not look like tag or mesh specification, or replace command, see documentation in DP_GFX_SKINFILES extension in dpextensions.qc\n", loadmodel->name, i, line);
+ }
+ Mem_Free(text);
+
+ if (numtags)
+ {
+ overridetagnameset_t *t;
+ t = tagsets + i;
+ t->num_overridetagnames = numtags;
+ t->data_overridetagnames = Mem_Alloc(loadmodel->mempool, t->num_overridetagnames * sizeof(overridetagname_t));
+ memcpy(t->data_overridetagnames, tags, t->num_overridetagnames * sizeof(overridetagname_t));
+ tagsetsused = true;
+ }
+ }
+ if (tagsetsused)
+ {
+ loadmodel->data_overridetagnamesforskin = Mem_Alloc(loadmodel->mempool, i * sizeof(overridetagnameset_t));
+ memcpy(loadmodel->data_overridetagnamesforskin, tagsets, i * sizeof(overridetagnameset_t));
+ }
+ if (i)
+ loadmodel->numskins = i;
+ return first;
+}
+
+void Mod_FreeSkinFiles(skinfile_t *skinfile)
+{
+ skinfile_t *next;
+ skinfileitem_t *skinfileitem, *nextitem;
+ for (;skinfile;skinfile = next)
+ {
+ next = skinfile->next;
+ for (skinfileitem = skinfile->items;skinfileitem;skinfileitem = nextitem)
+ {
+ nextitem = skinfileitem->next;
+ Mem_Free(skinfileitem);
+ }
+ Mem_Free(skinfile);
+ }
+}
+
+int Mod_CountSkinFiles(skinfile_t *skinfile)
+{
+ int i;
+ for (i = 0;skinfile;skinfile = skinfile->next, i++);
+ return i;
+}
+
+int Mod_RemoveDegenerateTriangles(int numtriangles, const int *inelement3i, int *outelement3i, const float *vertex3f)
+{
+ int i, outtriangles;
+ float d, edgedir[3], temp[3];
+ // a degenerate triangle is one with no width (thickness, surface area)
+ // these are characterized by having all 3 points colinear (along a line)
+ // or having two points identical
+ for (i = 0, outtriangles = 0;i < numtriangles;i++, inelement3i += 3)
+ {
+ // calculate first edge
+ VectorSubtract(vertex3f + inelement3i[1] * 3, vertex3f + inelement3i[0] * 3, edgedir);
+ if (VectorLength2(edgedir) < 0.0001f)
+ continue; // degenerate first edge (no length)
+ VectorNormalize(edgedir);
+ // check if third point is on the edge (colinear)
+ d = -DotProduct(vertex3f + inelement3i[2] * 3, edgedir);
+ VectorMA(vertex3f + inelement3i[2] * 3, d, edgedir, temp);
+ if (VectorLength2(temp) < 0.0001f)
+ continue; // third point colinear with first edge
+ // valid triangle (no colinear points, no duplicate points)
+ VectorCopy(inelement3i, outelement3i);
+ outelement3i += 3;
+ outtriangles++;
+ }
+ return outtriangles;
+}
+