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- /*
- ===========================================================================
- Copyright (C) 1997-2006 Id Software, Inc.
- This file is part of Quake 2 Tools source code.
- Quake 2 Tools source code is free software; you can redistribute it
- and/or modify it under the terms of the GNU General Public License as
- published by the Free Software Foundation; either version 2 of the License,
- or (at your option) any later version.
- Quake 2 Tools source code is distributed in the hope that it will be
- useful, but WITHOUT ANY WARRANTY; without even the implied warranty of
- MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
- GNU General Public License for more details.
- You should have received a copy of the GNU General Public License
- along with Quake 2 Tools source code; if not, write to the Free Software
- Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA
- ===========================================================================
- */
- #include "qbsp.h"
- int nummiptex;
- textureref_t textureref[MAX_MAP_TEXTURES];
- //==========================================================================
- int FindMiptex (char *name)
- {
- int i;
- char path[1024];
- miptex_t *mt;
- for (i=0 ; i<nummiptex ; i++)
- if (!strcmp (name, textureref[i].name))
- {
- return i;
- }
- if (nummiptex == MAX_MAP_TEXTURES)
- Error ("MAX_MAP_TEXTURES");
- strcpy (textureref[i].name, name);
- // load the miptex to get the flags and values
- sprintf (path, "%stextures/%s.wal", gamedir, name);
- if (TryLoadFile (path, (void **)&mt) != -1)
- {
- textureref[i].value = LittleLong (mt->value);
- textureref[i].flags = LittleLong (mt->flags);
- textureref[i].contents = LittleLong (mt->contents);
- strcpy (textureref[i].animname, mt->animname);
- free (mt);
- }
- nummiptex++;
- if (textureref[i].animname[0])
- FindMiptex (textureref[i].animname);
- return i;
- }
- /*
- ==================
- textureAxisFromPlane
- ==================
- */
- vec3_t baseaxis[18] =
- {
- {0,0,1}, {1,0,0}, {0,-1,0}, // floor
- {0,0,-1}, {1,0,0}, {0,-1,0}, // ceiling
- {1,0,0}, {0,1,0}, {0,0,-1}, // west wall
- {-1,0,0}, {0,1,0}, {0,0,-1}, // east wall
- {0,1,0}, {1,0,0}, {0,0,-1}, // south wall
- {0,-1,0}, {1,0,0}, {0,0,-1} // north wall
- };
- void TextureAxisFromPlane(plane_t *pln, vec3_t xv, vec3_t yv)
- {
- int bestaxis;
- vec_t dot,best;
- int i;
-
- best = 0;
- bestaxis = 0;
-
- for (i=0 ; i<6 ; i++)
- {
- dot = DotProduct (pln->normal, baseaxis[i*3]);
- if (dot > best)
- {
- best = dot;
- bestaxis = i;
- }
- }
-
- VectorCopy (baseaxis[bestaxis*3+1], xv);
- VectorCopy (baseaxis[bestaxis*3+2], yv);
- }
- int TexinfoForBrushTexture (plane_t *plane, brush_texture_t *bt, vec3_t origin)
- {
- vec3_t vecs[2];
- int sv, tv;
- vec_t ang, sinv, cosv;
- vec_t ns, nt;
- texinfo_t tx, *tc;
- int i, j, k;
- float shift[2];
- brush_texture_t anim;
- int mt;
- if (!bt->name[0])
- return 0;
- memset (&tx, 0, sizeof(tx));
- strcpy (tx.texture, bt->name);
- TextureAxisFromPlane(plane, vecs[0], vecs[1]);
- shift[0] = DotProduct (origin, vecs[0]);
- shift[1] = DotProduct (origin, vecs[1]);
- if (!bt->scale[0])
- bt->scale[0] = 1;
- if (!bt->scale[1])
- bt->scale[1] = 1;
- // rotate axis
- if (bt->rotate == 0)
- { sinv = 0 ; cosv = 1; }
- else if (bt->rotate == 90)
- { sinv = 1 ; cosv = 0; }
- else if (bt->rotate == 180)
- { sinv = 0 ; cosv = -1; }
- else if (bt->rotate == 270)
- { sinv = -1 ; cosv = 0; }
- else
- {
- ang = bt->rotate / 180 * Q_PI;
- sinv = sin(ang);
- cosv = cos(ang);
- }
- if (vecs[0][0])
- sv = 0;
- else if (vecs[0][1])
- sv = 1;
- else
- sv = 2;
-
- if (vecs[1][0])
- tv = 0;
- else if (vecs[1][1])
- tv = 1;
- else
- tv = 2;
-
- for (i=0 ; i<2 ; i++)
- {
- ns = cosv * vecs[i][sv] - sinv * vecs[i][tv];
- nt = sinv * vecs[i][sv] + cosv * vecs[i][tv];
- vecs[i][sv] = ns;
- vecs[i][tv] = nt;
- }
- for (i=0 ; i<2 ; i++)
- for (j=0 ; j<3 ; j++)
- tx.vecs[i][j] = vecs[i][j] / bt->scale[i];
- tx.vecs[0][3] = bt->shift[0] + shift[0];
- tx.vecs[1][3] = bt->shift[1] + shift[1];
- tx.flags = bt->flags;
- tx.value = bt->value;
- //
- // find the texinfo
- //
- tc = texinfo;
- for (i=0 ; i<numtexinfo ; i++, tc++)
- {
- if (tc->flags != tx.flags)
- continue;
- if (tc->value != tx.value)
- continue;
- for (j=0 ; j<2 ; j++)
- {
- if (strcmp (tc->texture, tx.texture))
- goto skip;
- for (k=0 ; k<4 ; k++)
- {
- if (tc->vecs[j][k] != tx.vecs[j][k])
- goto skip;
- }
- }
- return i;
- skip:;
- }
- *tc = tx;
- numtexinfo++;
- // load the next animation
- mt = FindMiptex (bt->name);
- if (textureref[mt].animname[0])
- {
- anim = *bt;
- strcpy (anim.name, textureref[mt].animname);
- tc->nexttexinfo = TexinfoForBrushTexture (plane, &anim, origin);
- }
- else
- tc->nexttexinfo = -1;
- return i;
- }
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