merge qw_client/r_misc.c and uquake/r_misc.c int common/r_misc.c

merge qw_client/r_sprite.c and uquake/r_sprite.c int common/r_sprite.c
This commit is contained in:
Bill Currie 2000-02-21 10:28:22 +00:00
parent 981acbc014
commit 0196064c51
4 changed files with 36 additions and 957 deletions

View file

@ -1,4 +1,5 @@
/* /*
r_misc.c
Copyright (C) 1996-1997 Id Software, Inc. Copyright (C) 1996-1997 Id Software, Inc.
Portions Copyright (C) 1999,2000 Nelson Rush. Portions Copyright (C) 1999,2000 Nelson Rush.
Copyright (C) 1999,2000 contributors of the QuakeForge project Copyright (C) 1999,2000 contributors of the QuakeForge project
@ -20,16 +21,19 @@ along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/ */
// r_misc.c
#include "quakedef.h" #include <quakedef.h>
#include "r_local.h" #include <r_local.h>
#include <mathlib.h>
#include <sys.h>
#include <console.h>
#include <cvar.h>
#include <cvars.h> #include <cvars.h>
#include <view.h>
#include <sbar.h> #include <sbar.h>
#include <menu.h> #include <menu.h>
#include <draw.h> #include <draw.h>
#include <mathlib.h> #include <server.h>
#include <console.h>
/* /*
@ -39,7 +43,7 @@ R_CheckVariables
*/ */
void R_CheckVariables (void) void R_CheckVariables (void)
{ {
#if 0 #ifdef UQUAKE
static float oldbright; static float oldbright;
if (r_fullbright.value != oldbright) if (r_fullbright.value != oldbright)
@ -125,10 +129,10 @@ void R_LineGraph (int x, int y, int h)
int color; int color;
// FIXME: should be disabled on no-buffer adapters, or should be in the driver // FIXME: should be disabled on no-buffer adapters, or should be in the driver
#ifdef UQUAKE
// x += r_refdef.vrect.x; x += r_refdef.vrect.x;
// y += r_refdef.vrect.y; y += r_refdef.vrect.y;
#endif
dest = vid.buffer + vid.rowbytes*y + x; dest = vid.buffer + vid.rowbytes*y + x;
s = r_graphheight.value; s = r_graphheight.value;
@ -144,13 +148,15 @@ void R_LineGraph (int x, int y, int h)
if (h>s) if (h>s)
h = s; h = s;
for (i=0 ; i<h ; i++, dest -= vid.rowbytes*2) for (i=0 ; i<h ; i++, dest -= vid.rowbytes*2)
{ {
dest[0] = color; dest[0] = color;
// *(dest-vid.rowbytes) = 0x30; #ifdef UQUAKE
*(dest-vid.rowbytes) = 0x30;
#endif
} }
#if 0 #ifdef UQUAKE
for ( ; i<s ; i++, dest -= vid.rowbytes*2) for ( ; i<s ; i++, dest -= vid.rowbytes*2)
{ {
dest[0] = 0x30; dest[0] = 0x30;
@ -455,10 +461,13 @@ void R_SetupFrame (void)
float w, h; float w, h;
// don't allow cheats in multiplayer // don't allow cheats in multiplayer
r_draworder.value = 0; if (cl.maxclients > 1)
r_fullbright.value = 0; {
r_ambient.value = 0; r_draworder.value = 0;
r_drawflat.value = 0; r_fullbright.value = 0;
r_ambient.value = 0;
r_drawflat.value = 0;
}
if (r_numsurfs.value) if (r_numsurfs.value)
{ {
@ -484,8 +493,9 @@ r_drawflat.value = 0;
if (r_refdef.ambientlight < 0) if (r_refdef.ambientlight < 0)
r_refdef.ambientlight = 0; r_refdef.ambientlight = 0;
#ifdef UQUAKE
// if (!sv.active) if (!sv.active)
#endif
r_draworder.value = 0; // don't let cheaters look behind walls r_draworder.value = 0; // don't let cheaters look behind walls
R_CheckVariables (); R_CheckVariables ();
@ -519,7 +529,11 @@ r_refdef.viewangles[2]= 0;
r_dowarpold = r_dowarp; r_dowarpold = r_dowarp;
r_dowarp = r_waterwarp.value && (r_viewleaf->contents <= CONTENTS_WATER); r_dowarp = r_waterwarp.value && (r_viewleaf->contents <= CONTENTS_WATER);
if ((r_dowarp != r_dowarpold) || r_viewchanged) if ((r_dowarp != r_dowarpold)
#ifdef UQUAKE
|| lcd_x.value
#endif
|| r_viewchanged)
{ {
if (r_dowarp) if (r_dowarp)
{ {

View file

@ -24,7 +24,9 @@ Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
#include "quakedef.h" #include "quakedef.h"
#include "r_local.h" #include "r_local.h"
#include <mathlib.h> #include <mathlib.h>
#include <lib_replace.h>
#include <console.h> #include <console.h>
#include <sys.h>
static int clip_current; static int clip_current;
static vec5_t clip_verts[2][MAXWORKINGVERTS]; static vec5_t clip_verts[2][MAXWORKINGVERTS];

View file

@ -1,532 +0,0 @@
/*
r_misc.c
Copyright (C) 1996-1997 Id Software, Inc.
This program 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.
This program 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 this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
#include <quakedef.h>
#include <r_local.h>
#include <mathlib.h>
#include <sys.h>
#include <console.h>
#include <cvar.h>
#include <cvars.h>
#include <view.h>
#include <sbar.h>
#include <console.h>
#include <server.h>
/*
===============
R_CheckVariables
===============
*/
void R_CheckVariables (void)
{
static float oldbright;
if (r_fullbright.value != oldbright)
{
oldbright = r_fullbright.value;
D_FlushCaches (); // so all lighting changes
}
}
/*
============
Show
Debugging use
============
*/
void Show (void)
{
vrect_t vr;
vr.x = vr.y = 0;
vr.width = vid.width;
vr.height = vid.height;
vr.pnext = NULL;
VID_Update (&vr);
}
/*
====================
R_TimeRefresh_f
For program optimization
====================
*/
void R_TimeRefresh_f (void)
{
int i;
float start, stop, time;
int startangle;
vrect_t vr;
startangle = r_refdef.viewangles[1];
start = Sys_DoubleTime ();
for (i=0 ; i<128 ; i++)
{
r_refdef.viewangles[1] = i/128.0*360.0;
VID_LockBuffer ();
R_RenderView ();
VID_UnlockBuffer ();
vr.x = r_refdef.vrect.x;
vr.y = r_refdef.vrect.y;
vr.width = r_refdef.vrect.width;
vr.height = r_refdef.vrect.height;
vr.pnext = NULL;
VID_Update (&vr);
}
stop = Sys_DoubleTime ();
time = stop-start;
Con_Printf ("%f seconds (%f fps)\n", time, 128/time);
r_refdef.viewangles[1] = startangle;
}
/*
================
R_LineGraph
Only called by R_DisplayTime
================
*/
void R_LineGraph (int x, int y, int h)
{
int i;
byte *dest;
int s;
// FIXME: should be disabled on no-buffer adapters, or should be in the driver
x += r_refdef.vrect.x;
y += r_refdef.vrect.y;
dest = vid.buffer + vid.rowbytes*y + x;
s = r_graphheight.value;
if (h>s)
h = s;
for (i=0 ; i<h ; i++, dest -= vid.rowbytes*2)
{
dest[0] = 0xff;
*(dest-vid.rowbytes) = 0x30;
}
for ( ; i<s ; i++, dest -= vid.rowbytes*2)
{
dest[0] = 0x30;
*(dest-vid.rowbytes) = 0x30;
}
}
/*
==============
R_TimeGraph
Performance monitoring tool
==============
*/
#define MAX_TIMINGS 100
extern float mouse_x, mouse_y;
void R_TimeGraph (void)
{
static int timex;
int a;
float r_time2;
static byte r_timings[MAX_TIMINGS];
int x;
r_time2 = Sys_DoubleTime ();
a = (r_time2-r_time1)/0.01;
//a = fabs(mouse_y * 0.05);
//a = (int)((r_refdef.vieworg[2] + 1024)/1)%(int)r_graphheight.value;
//a = fabs(velocity[0])/20;
//a = ((int)fabs(origin[0])/8)%20;
//a = (cl.idealpitch + 30)/5;
r_timings[timex] = a;
a = timex;
if (r_refdef.vrect.width <= MAX_TIMINGS)
x = r_refdef.vrect.width-1;
else
x = r_refdef.vrect.width -
(r_refdef.vrect.width - MAX_TIMINGS)/2;
do
{
R_LineGraph (x, r_refdef.vrect.height-2, r_timings[a]);
if (x==0)
break; // screen too small to hold entire thing
x--;
a--;
if (a == -1)
a = MAX_TIMINGS-1;
} while (a != timex);
timex = (timex+1)%MAX_TIMINGS;
}
/*
=============
R_PrintTimes
=============
*/
void R_PrintTimes (void)
{
float r_time2;
float ms;
r_time2 = Sys_DoubleTime ();
ms = 1000* (r_time2 - r_time1);
Con_Printf ("%5.1f ms %3i/%3i/%3i poly %3i surf\n",
ms, c_faceclip, r_polycount, r_drawnpolycount, c_surf);
c_surf = 0;
}
/*
=============
R_PrintDSpeeds
=============
*/
void R_PrintDSpeeds (void)
{
float ms, dp_time, r_time2, rw_time, db_time, se_time, de_time, dv_time;
r_time2 = Sys_DoubleTime ();
dp_time = (dp_time2 - dp_time1) * 1000;
rw_time = (rw_time2 - rw_time1) * 1000;
db_time = (db_time2 - db_time1) * 1000;
se_time = (se_time2 - se_time1) * 1000;
de_time = (de_time2 - de_time1) * 1000;
dv_time = (dv_time2 - dv_time1) * 1000;
ms = (r_time2 - r_time1) * 1000;
Con_Printf ("%3i %4.1fp %3iw %4.1fb %3is %4.1fe %4.1fv\n",
(int)ms, dp_time, (int)rw_time, db_time, (int)se_time, de_time,
dv_time);
}
/*
=============
R_PrintAliasStats
=============
*/
void R_PrintAliasStats (void)
{
Con_Printf ("%3i polygon model drawn\n", r_amodels_drawn);
}
void WarpPalette (void)
{
int i,j;
byte newpalette[768];
int basecolor[3];
basecolor[0] = 130;
basecolor[1] = 80;
basecolor[2] = 50;
// pull the colors halfway to bright brown
for (i=0 ; i<256 ; i++)
{
for (j=0 ; j<3 ; j++)
{
newpalette[i*3+j] = (host_basepal[i*3+j] + basecolor[j])/2;
}
}
VID_ShiftPalette (newpalette);
}
/*
===================
R_TransformFrustum
===================
*/
void R_TransformFrustum (void)
{
int i;
vec3_t v, v2;
for (i=0 ; i<4 ; i++)
{
v[0] = screenedge[i].normal[2];
v[1] = -screenedge[i].normal[0];
v[2] = screenedge[i].normal[1];
v2[0] = v[1]*vright[0] + v[2]*vup[0] + v[0]*vpn[0];
v2[1] = v[1]*vright[1] + v[2]*vup[1] + v[0]*vpn[1];
v2[2] = v[1]*vright[2] + v[2]*vup[2] + v[0]*vpn[2];
VectorCopy (v2, view_clipplanes[i].normal);
view_clipplanes[i].dist = DotProduct (modelorg, v2);
}
}
#if !id386
/*
================
TransformVector
================
*/
void TransformVector (vec3_t in, vec3_t out)
{
out[0] = DotProduct(in,vright);
out[1] = DotProduct(in,vup);
out[2] = DotProduct(in,vpn);
}
#endif
/*
================
R_TransformPlane
================
*/
void R_TransformPlane (mplane_t *p, float *normal, float *dist)
{
float d;
d = DotProduct (r_origin, p->normal);
*dist = p->dist - d;
// TODO: when we have rotating entities, this will need to use the view matrix
TransformVector (p->normal, normal);
}
/*
===============
R_SetUpFrustumIndexes
===============
*/
void R_SetUpFrustumIndexes (void)
{
int i, j, *pindex;
pindex = r_frustum_indexes;
for (i=0 ; i<4 ; i++)
{
for (j=0 ; j<3 ; j++)
{
if (view_clipplanes[i].normal[j] < 0)
{
pindex[j] = j;
pindex[j+3] = j+3;
}
else
{
pindex[j] = j+3;
pindex[j+3] = j;
}
}
// FIXME: do just once at start
pfrustum_indexes[i] = pindex;
pindex += 6;
}
}
/*
===============
R_SetupFrame
===============
*/
void R_SetupFrame (void)
{
int edgecount;
vrect_t vrect;
float w, h;
// don't allow cheats in multiplayer
if (cl.maxclients > 1)
{
Cvar_Set ("r_draworder", "0");
Cvar_Set ("r_fullbright", "0");
Cvar_Set ("r_ambient", "0");
Cvar_Set ("r_drawflat", "0");
}
if (r_numsurfs.value)
{
if ((surface_p - surfaces) > r_maxsurfsseen)
r_maxsurfsseen = surface_p - surfaces;
Con_Printf ("Used %d of %d surfs; %d max\n", surface_p - surfaces,
surf_max - surfaces, r_maxsurfsseen);
}
if (r_numedges.value)
{
edgecount = edge_p - r_edges;
if (edgecount > r_maxedgesseen)
r_maxedgesseen = edgecount;
Con_Printf ("Used %d of %d edges; %d max\n", edgecount,
r_numallocatededges, r_maxedgesseen);
}
r_refdef.ambientlight = r_ambient.value;
if (r_refdef.ambientlight < 0)
r_refdef.ambientlight = 0;
if (!sv.active)
r_draworder.value = 0; // don't let cheaters look behind walls
R_CheckVariables ();
R_AnimateLight ();
r_framecount++;
numbtofpolys = 0;
// debugging
#if 0
r_refdef.vieworg[0]= 80;
r_refdef.vieworg[1]= 64;
r_refdef.vieworg[2]= 40;
r_refdef.viewangles[0]= 0;
r_refdef.viewangles[1]= 46.763641357;
r_refdef.viewangles[2]= 0;
#endif
// build the transformation matrix for the given view angles
VectorCopy (r_refdef.vieworg, modelorg);
VectorCopy (r_refdef.vieworg, r_origin);
AngleVectors (r_refdef.viewangles, vpn, vright, vup);
// current viewleaf
r_oldviewleaf = r_viewleaf;
r_viewleaf = Mod_PointInLeaf (r_origin, cl.worldmodel);
r_dowarpold = r_dowarp;
r_dowarp = r_waterwarp.value && (r_viewleaf->contents <= CONTENTS_WATER);
if ((r_dowarp != r_dowarpold) || r_viewchanged || lcd_x.value)
{
if (r_dowarp)
{
if ((vid.width <= vid.maxwarpwidth) &&
(vid.height <= vid.maxwarpheight))
{
vrect.x = 0;
vrect.y = 0;
vrect.width = vid.width;
vrect.height = vid.height;
R_ViewChanged (&vrect, sb_lines, vid.aspect);
}
else
{
w = vid.width;
h = vid.height;
if (w > vid.maxwarpwidth)
{
h *= (float)vid.maxwarpwidth / w;
w = vid.maxwarpwidth;
}
if (h > vid.maxwarpheight)
{
h = vid.maxwarpheight;
w *= (float)vid.maxwarpheight / h;
}
vrect.x = 0;
vrect.y = 0;
vrect.width = (int)w;
vrect.height = (int)h;
R_ViewChanged (&vrect,
(int)((float)sb_lines * (h/(float)vid.height)),
vid.aspect * (h / w) *
((float)vid.width / (float)vid.height));
}
}
else
{
vrect.x = 0;
vrect.y = 0;
vrect.width = vid.width;
vrect.height = vid.height;
R_ViewChanged (&vrect, sb_lines, vid.aspect);
}
r_viewchanged = false;
}
// start off with just the four screen edge clip planes
R_TransformFrustum ();
// save base values
VectorCopy (vpn, base_vpn);
VectorCopy (vright, base_vright);
VectorCopy (vup, base_vup);
VectorCopy (modelorg, base_modelorg);
R_SetSkyFrame ();
R_SetUpFrustumIndexes ();
r_cache_thrash = false;
// clear frame counts
c_faceclip = 0;
d_spanpixcount = 0;
r_polycount = 0;
r_drawnpolycount = 0;
r_wholepolycount = 0;
r_amodels_drawn = 0;
r_outofsurfaces = 0;
r_outofedges = 0;
D_SetupFrame ();
}

View file

@ -1,405 +0,0 @@
/*
Copyright (C) 1996-1997 Id Software, Inc.
This program 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.
This program 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 this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
*/
// r_sprite.c
#include "quakedef.h"
#include "r_local.h"
#include <mathlib.h>
#include <lib_replace.h>
#include <console.h>
#include <sys.h>
static int clip_current;
static vec5_t clip_verts[2][MAXWORKINGVERTS];
static int sprite_width, sprite_height;
spritedesc_t r_spritedesc;
/*
================
R_RotateSprite
================
*/
void R_RotateSprite (float beamlength)
{
vec3_t vec;
if (beamlength == 0.0)
return;
VectorScale (r_spritedesc.vpn, -beamlength, vec);
VectorAdd (r_entorigin, vec, r_entorigin);
VectorSubtract (modelorg, vec, modelorg);
}
/*
=============
R_ClipSpriteFace
Clips the winding at clip_verts[clip_current] and changes clip_current
Throws out the back side
==============
*/
int R_ClipSpriteFace (int nump, clipplane_t *pclipplane)
{
int i, outcount;
float dists[MAXWORKINGVERTS+1];
float frac, clipdist, *pclipnormal;
float *in, *instep, *outstep, *vert2;
clipdist = pclipplane->dist;
pclipnormal = pclipplane->normal;
// calc dists
if (clip_current)
{
in = clip_verts[1][0];
outstep = clip_verts[0][0];
clip_current = 0;
}
else
{
in = clip_verts[0][0];
outstep = clip_verts[1][0];
clip_current = 1;
}
instep = in;
for (i=0 ; i<nump ; i++, instep += sizeof (vec5_t) / sizeof (float))
{
dists[i] = DotProduct (instep, pclipnormal) - clipdist;
}
// handle wraparound case
dists[nump] = dists[0];
Q_memcpy (instep, in, sizeof (vec5_t));
// clip the winding
instep = in;
outcount = 0;
for (i=0 ; i<nump ; i++, instep += sizeof (vec5_t) / sizeof (float))
{
if (dists[i] >= 0)
{
Q_memcpy (outstep, instep, sizeof (vec5_t));
outstep += sizeof (vec5_t) / sizeof (float);
outcount++;
}
if (dists[i] == 0 || dists[i+1] == 0)
continue;
if ( (dists[i] > 0) == (dists[i+1] > 0) )
continue;
// split it into a new vertex
frac = dists[i] / (dists[i] - dists[i+1]);
vert2 = instep + sizeof (vec5_t) / sizeof (float);
outstep[0] = instep[0] + frac*(vert2[0] - instep[0]);
outstep[1] = instep[1] + frac*(vert2[1] - instep[1]);
outstep[2] = instep[2] + frac*(vert2[2] - instep[2]);
outstep[3] = instep[3] + frac*(vert2[3] - instep[3]);
outstep[4] = instep[4] + frac*(vert2[4] - instep[4]);
outstep += sizeof (vec5_t) / sizeof (float);
outcount++;
}
return outcount;
}
/*
================
R_SetupAndDrawSprite
================
*/
void R_SetupAndDrawSprite ()
{
int i, nump;
float dot, scale, *pv;
vec5_t *pverts;
vec3_t left, up, right, down, transformed, local;
emitpoint_t outverts[MAXWORKINGVERTS+1], *pout;
dot = DotProduct (r_spritedesc.vpn, modelorg);
// backface cull
if (dot >= 0)
return;
// build the sprite poster in worldspace
VectorScale (r_spritedesc.vright, r_spritedesc.pspriteframe->right, right);
VectorScale (r_spritedesc.vup, r_spritedesc.pspriteframe->up, up);
VectorScale (r_spritedesc.vright, r_spritedesc.pspriteframe->left, left);
VectorScale (r_spritedesc.vup, r_spritedesc.pspriteframe->down, down);
pverts = clip_verts[0];
pverts[0][0] = r_entorigin[0] + up[0] + left[0];
pverts[0][1] = r_entorigin[1] + up[1] + left[1];
pverts[0][2] = r_entorigin[2] + up[2] + left[2];
pverts[0][3] = 0;
pverts[0][4] = 0;
pverts[1][0] = r_entorigin[0] + up[0] + right[0];
pverts[1][1] = r_entorigin[1] + up[1] + right[1];
pverts[1][2] = r_entorigin[2] + up[2] + right[2];
pverts[1][3] = sprite_width;
pverts[1][4] = 0;
pverts[2][0] = r_entorigin[0] + down[0] + right[0];
pverts[2][1] = r_entorigin[1] + down[1] + right[1];
pverts[2][2] = r_entorigin[2] + down[2] + right[2];
pverts[2][3] = sprite_width;
pverts[2][4] = sprite_height;
pverts[3][0] = r_entorigin[0] + down[0] + left[0];
pverts[3][1] = r_entorigin[1] + down[1] + left[1];
pverts[3][2] = r_entorigin[2] + down[2] + left[2];
pverts[3][3] = 0;
pverts[3][4] = sprite_height;
// clip to the frustum in worldspace
nump = 4;
clip_current = 0;
for (i=0 ; i<4 ; i++)
{
nump = R_ClipSpriteFace (nump, &view_clipplanes[i]);
if (nump < 3)
return;
if (nump >= MAXWORKINGVERTS)
Sys_Error("R_SetupAndDrawSprite: too many points");
}
// transform vertices into viewspace and project
pv = &clip_verts[clip_current][0][0];
r_spritedesc.nearzi = -999999;
for (i=0 ; i<nump ; i++)
{
VectorSubtract (pv, r_origin, local);
TransformVector (local, transformed);
if (transformed[2] < NEAR_CLIP)
transformed[2] = NEAR_CLIP;
pout = &outverts[i];
pout->zi = 1.0 / transformed[2];
if (pout->zi > r_spritedesc.nearzi)
r_spritedesc.nearzi = pout->zi;
pout->s = pv[3];
pout->t = pv[4];
scale = xscale * pout->zi;
pout->u = (xcenter + scale * transformed[0]);
scale = yscale * pout->zi;
pout->v = (ycenter - scale * transformed[1]);
pv += sizeof (vec5_t) / sizeof (*pv);
}
// draw it
r_spritedesc.nump = nump;
r_spritedesc.pverts = outverts;
D_DrawSprite ();
}
/*
================
R_GetSpriteframe
================
*/
mspriteframe_t *R_GetSpriteframe (msprite_t *psprite)
{
mspritegroup_t *pspritegroup;
mspriteframe_t *pspriteframe;
int i, numframes, frame;
float *pintervals, fullinterval, targettime, time;
frame = currententity->frame;
if ((frame >= psprite->numframes) || (frame < 0))
{
Con_Printf ("R_DrawSprite: no such frame %d\n", frame);
frame = 0;
}
if (psprite->frames[frame].type == SPR_SINGLE)
{
pspriteframe = psprite->frames[frame].frameptr;
}
else
{
pspritegroup = (mspritegroup_t *)psprite->frames[frame].frameptr;
pintervals = pspritegroup->intervals;
numframes = pspritegroup->numframes;
fullinterval = pintervals[numframes-1];
time = cl.time + currententity->syncbase;
// when loading in Mod_LoadSpriteGroup, we guaranteed all interval values
// are positive, so we don't have to worry about division by 0
targettime = time - ((int)(time / fullinterval)) * fullinterval;
for (i=0 ; i<(numframes-1) ; i++)
{
if (pintervals[i] > targettime)
break;
}
pspriteframe = pspritegroup->frames[i];
}
return pspriteframe;
}
/*
================
R_DrawSprite
================
*/
void R_DrawSprite (void)
{
int i;
msprite_t *psprite;
vec3_t tvec;
float dot, angle, sr, cr;
psprite = currententity->model->cache.data;
r_spritedesc.pspriteframe = R_GetSpriteframe (psprite);
sprite_width = r_spritedesc.pspriteframe->width;
sprite_height = r_spritedesc.pspriteframe->height;
// TODO: make this caller-selectable
if (psprite->type == SPR_FACING_UPRIGHT)
{
// generate the sprite's axes, with vup straight up in worldspace, and
// r_spritedesc.vright perpendicular to modelorg.
// This will not work if the view direction is very close to straight up or
// down, because the cross product will be between two nearly parallel
// vectors and starts to approach an undefined state, so we don't draw if
// the two vectors are less than 1 degree apart
tvec[0] = -modelorg[0];
tvec[1] = -modelorg[1];
tvec[2] = -modelorg[2];
VectorNormalize (tvec);
dot = tvec[2]; // same as DotProduct (tvec, r_spritedesc.vup) because
// r_spritedesc.vup is 0, 0, 1
if ((dot > 0.999848) || (dot < -0.999848)) // cos(1 degree) = 0.999848
return;
r_spritedesc.vup[0] = 0;
r_spritedesc.vup[1] = 0;
r_spritedesc.vup[2] = 1;
r_spritedesc.vright[0] = tvec[1];
// CrossProduct(r_spritedesc.vup, -modelorg,
r_spritedesc.vright[1] = -tvec[0];
// r_spritedesc.vright)
r_spritedesc.vright[2] = 0;
VectorNormalize (r_spritedesc.vright);
r_spritedesc.vpn[0] = -r_spritedesc.vright[1];
r_spritedesc.vpn[1] = r_spritedesc.vright[0];
r_spritedesc.vpn[2] = 0;
// CrossProduct (r_spritedesc.vright, r_spritedesc.vup,
// r_spritedesc.vpn)
}
else if (psprite->type == SPR_VP_PARALLEL)
{
// generate the sprite's axes, completely parallel to the viewplane. There
// are no problem situations, because the sprite is always in the same
// position relative to the viewer
for (i=0 ; i<3 ; i++)
{
r_spritedesc.vup[i] = vup[i];
r_spritedesc.vright[i] = vright[i];
r_spritedesc.vpn[i] = vpn[i];
}
}
else if (psprite->type == SPR_VP_PARALLEL_UPRIGHT)
{
// generate the sprite's axes, with vup straight up in worldspace, and
// r_spritedesc.vright parallel to the viewplane.
// This will not work if the view direction is very close to straight up or
// down, because the cross product will be between two nearly parallel
// vectors and starts to approach an undefined state, so we don't draw if
// the two vectors are less than 1 degree apart
dot = vpn[2]; // same as DotProduct (vpn, r_spritedesc.vup) because
// r_spritedesc.vup is 0, 0, 1
if ((dot > 0.999848) || (dot < -0.999848)) // cos(1 degree) = 0.999848
return;
r_spritedesc.vup[0] = 0;
r_spritedesc.vup[1] = 0;
r_spritedesc.vup[2] = 1;
r_spritedesc.vright[0] = vpn[1];
// CrossProduct (r_spritedesc.vup, vpn,
r_spritedesc.vright[1] = -vpn[0]; // r_spritedesc.vright)
r_spritedesc.vright[2] = 0;
VectorNormalize (r_spritedesc.vright);
r_spritedesc.vpn[0] = -r_spritedesc.vright[1];
r_spritedesc.vpn[1] = r_spritedesc.vright[0];
r_spritedesc.vpn[2] = 0;
// CrossProduct (r_spritedesc.vright, r_spritedesc.vup,
// r_spritedesc.vpn)
}
else if (psprite->type == SPR_ORIENTED)
{
// generate the sprite's axes, according to the sprite's world orientation
AngleVectors (currententity->angles, r_spritedesc.vpn,
r_spritedesc.vright, r_spritedesc.vup);
}
else if (psprite->type == SPR_VP_PARALLEL_ORIENTED)
{
// generate the sprite's axes, parallel to the viewplane, but rotated in
// that plane around the center according to the sprite entity's roll
// angle. So vpn stays the same, but vright and vup rotate
angle = currententity->angles[ROLL] * (M_PI*2 / 360);
sr = sin(angle);
cr = cos(angle);
for (i=0 ; i<3 ; i++)
{
r_spritedesc.vpn[i] = vpn[i];
r_spritedesc.vright[i] = vright[i] * cr + vup[i] * sr;
r_spritedesc.vup[i] = vright[i] * -sr + vup[i] * cr;
}
}
else
{
Sys_Error ("R_DrawSprite: Bad sprite type %d", psprite->type);
}
R_RotateSprite (psprite->beamlength);
R_SetupAndDrawSprite ();
}