mirror of
https://git.code.sf.net/p/quake/quakeforge
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133 lines
3.3 KiB
C
133 lines
3.3 KiB
C
/*
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gl_mod_sprite.c
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(description)
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Copyright (C) 1996-1997 Id Software, Inc.
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This program is free software; you can redistribute it and/or
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modify it under the terms of the GNU General Public License
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as published by the Free Software Foundation; either version 2
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of the License, or (at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
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See the GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program; if not, write to:
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Free Software Foundation, Inc.
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59 Temple Place - Suite 330
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Boston, MA 02111-1307, USA
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*/
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static const char rcsid[] =
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"$Id$";
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#ifdef HAVE_CONFIG_H
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# include "config.h"
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#endif
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#include "QF/GL/defines.h"
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#include "QF/GL/funcs.h"
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#include "QF/console.h"
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#include "QF/model.h"
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#include "QF/render.h"
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#include "r_shared.h"
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static mspriteframe_t *
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R_GetSpriteFrame (entity_t *currententity)
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{
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float fullinterval, targettime, time;
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float *pintervals;
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int frame, numframes, i;
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msprite_t *psprite;
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mspriteframe_t *pspriteframe;
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mspritegroup_t *pspritegroup;
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psprite = currententity->model->cache.data;
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frame = currententity->frame;
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if ((frame >= psprite->numframes) || (frame < 0)) {
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Con_Printf ("R_DrawSprite: no such frame %d\n", frame);
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frame = 0;
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}
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if (psprite->frames[frame].type == SPR_SINGLE) {
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pspriteframe = psprite->frames[frame].frameptr;
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} else {
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pspritegroup = (mspritegroup_t *) psprite->frames[frame].frameptr;
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pintervals = pspritegroup->intervals;
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numframes = pspritegroup->numframes;
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fullinterval = pintervals[numframes - 1];
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time = r_realtime + currententity->syncbase;
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// when loading in Mod_LoadSpriteGroup, we guaranteed all interval
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// values are positive, so we don't have to worry about division by 0
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targettime = time - ((int) (time / fullinterval)) * fullinterval;
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for (i = 0; i < (numframes - 1); i++) {
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if (pintervals[i] > targettime)
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break;
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}
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pspriteframe = pspritegroup->frames[i];
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}
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return pspriteframe;
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}
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// FIXME: add modelalpha support?
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void
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R_DrawSpriteModel (entity_t *e)
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{
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float *up, *right;
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msprite_t *psprite;
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mspriteframe_t *frame;
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vec3_t point, v_forward, v_right, v_up;
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// don't bother culling, it's just a single polygon without a surface cache
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frame = R_GetSpriteFrame (e);
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psprite = e->model->cache.data;
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if (psprite->type == SPR_ORIENTED) { // bullet marks on walls
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AngleVectors (e->angles, v_forward, v_right, v_up);
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up = v_up;
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right = v_right;
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} else { // normal sprite
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up = vup;
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right = vright;
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}
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qfglBindTexture (GL_TEXTURE_2D, frame->gl_texturenum);
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qfglBegin (GL_QUADS);
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qfglTexCoord2f (0, 1);
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VectorMA (e->origin, frame->down, up, point);
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VectorMA (point, frame->left, right, point);
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qfglVertex3fv (point);
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qfglTexCoord2f (0, 0);
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VectorMA (e->origin, frame->up, up, point);
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VectorMA (point, frame->left, right, point);
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qfglVertex3fv (point);
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qfglTexCoord2f (1, 0);
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VectorMA (e->origin, frame->up, up, point);
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VectorMA (point, frame->right, right, point);
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qfglVertex3fv (point);
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qfglTexCoord2f (1, 1);
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VectorMA (e->origin, frame->down, up, point);
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VectorMA (point, frame->right, right, point);
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qfglVertex3fv (point);
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qfglEnd ();
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}
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