qzdoom/src/swrenderer/things/r_visiblesprite.cpp

76 lines
1.9 KiB
C++

//
// Copyright (C) 1993-1996 by id Software, Inc.
//
// This source is available for distribution and/or modification
// only under the terms of the DOOM Source Code License as
// published by id Software. All rights reserved.
//
// The source is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied warranty of
// FITNESS FOR A PARTICULAR PURPOSE. See the DOOM Source Code License
// for more details.
//
#include <stdio.h>
#include <stdlib.h>
#include <algorithm>
#include "p_lnspec.h"
#include "templates.h"
#include "doomdef.h"
#include "m_swap.h"
#include "i_system.h"
#include "w_wad.h"
#include "swrenderer/r_main.h"
#include "swrenderer/things/r_visiblesprite.h"
namespace swrenderer
{
int MaxVisSprites;
vissprite_t **vissprites;
vissprite_t **firstvissprite;
vissprite_t **vissprite_p;
vissprite_t **lastvissprite;
void R_DeinitVisSprites()
{
// Free vissprites
for (int i = 0; i < MaxVisSprites; ++i)
{
delete vissprites[i];
}
free(vissprites);
vissprites = nullptr;
vissprite_p = lastvissprite = nullptr;
MaxVisSprites = 0;
}
void R_ClearVisSprites()
{
vissprite_p = firstvissprite;
}
vissprite_t *R_NewVisSprite()
{
if (vissprite_p == lastvissprite)
{
ptrdiff_t firstvisspritenum = firstvissprite - vissprites;
ptrdiff_t prevvisspritenum = vissprite_p - vissprites;
MaxVisSprites = MaxVisSprites ? MaxVisSprites * 2 : 128;
vissprites = (vissprite_t **)M_Realloc(vissprites, MaxVisSprites * sizeof(vissprite_t));
lastvissprite = &vissprites[MaxVisSprites];
firstvissprite = &vissprites[firstvisspritenum];
vissprite_p = &vissprites[prevvisspritenum];
DPrintf(DMSG_NOTIFY, "MaxVisSprites increased to %d\n", MaxVisSprites);
// Allocate sprites from the new pile
for (vissprite_t **p = vissprite_p; p < lastvissprite; ++p)
{
*p = new vissprite_t;
}
}
vissprite_p++;
return *(vissprite_p - 1);
}
}