Paranoia2_original/cl_dll/render/gl_rsurf.cpp

99 lines
2.2 KiB
C++

/*
gl_rsurf.cpp - surface-related code
Copyright (C) 2013 Uncle Mike
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 3 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.
*/
#include "hud.h"
#include "cl_util.h"
#include "gl_local.h"
static int rtable[MOD_FRAMES][MOD_FRAMES];
/*
===============
R_TextureAnimation
Returns the proper texture for a given time and base texture
===============
*/
texture_t *R_TextureAnimation( msurface_t *s )
{
texture_t *base = s->texinfo->texture;
int count, reletive = 0;
if(( RI->currententity != NULL ) && ( RI->currententity->curstate.frame != 0.0f ))
{
if( base->alternate_anims )
base = base->alternate_anims;
}
if( !base->anim_total )
return base;
if( base->name[0] == '-' )
{
int tx = (int)((s->texturemins[0] + (base->width << 16)) / base->width) % MOD_FRAMES;
int ty = (int)((s->texturemins[1] + (base->height << 16)) / base->height) % MOD_FRAMES;
reletive = rtable[tx][ty] % base->anim_total;
}
else
{
reletive = (int)(tr.time * 20) % base->anim_total;
}
count = 0;
while( base->anim_min > reletive || base->anim_max <= reletive )
{
base = base->anim_next;
if( !base )
{
ALERT( at_error, "R_TextureAnimation: broken loop\n" );
return s->texinfo->texture;
}
if( ++count > MOD_FRAMES )
{
ALERT( at_error, "R_TextureAnimation: infinite loop\n" );
return s->texinfo->texture;
}
}
return base;
}
/*
=============================================================
WORLD MODEL
=============================================================
*/
void GL_InitRandomTable( void )
{
int tu, tv;
// make random predictable
RANDOM_SEED( 255 );
for( tu = 0; tu < MOD_FRAMES; tu++ )
{
for( tv = 0; tv < MOD_FRAMES; tv++ )
{
rtable[tu][tv] = RANDOM_LONG( 0, 0x7FFF );
}
}
RANDOM_SEED( 0 );
}