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/*
* sprites.h - Sprite drawing macros.
*
* Written by
* Ettore Perazzoli (ettore@comm2000.it)
*
* This file is part of VICE, the Versatile Commodore Emulator.
* See README for copyright notice.
*
* 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.
*
*/
#define SPRITE_PIXEL(do_draw, sprite_bit, imgptr, collmskptr, pos, \
color, collmsk_return) \
do { \
if ((do_draw) && (collmskptr)[(pos)] == 0) \
(imgptr)[(pos)] = PIXEL((color)); \
(collmsk_return) |= (collmskptr)[(pos)]; \
(collmskptr)[(pos)] |= (sprite_bit); \
} while (0)
#ifdef ALLOW_UNALIGNED_ACCESS
# define SPRITE_PIXEL_2x(do_draw, sprite_bit, imgptr, collmskptr, pos, \
color, collmsk_return) \
do { \
if ((do_draw) && (collmskptr)[(pos)] == 0) \
*((PIXEL2 *)(imgptr) + (pos)) = PIXEL2((color)); \
(collmsk_return) |= (collmskptr)[(pos)]; \
(collmskptr)[(pos)] |= (sprite_bit); \
} while (0)
#else
# define SPRITE_PIXEL_2x(do_draw, sprite_bit, imgptr, collmskptr, pos, \
color, collmsk_return) \
do { \
if ((do_draw) && (collmskptr)[(pos)] == 0) \
(imgptr)[(pos) * 2] = (imgptr)[(pos) * 2 + 1] = PIXEL((color)); \
(collmsk_return) |= (collmskptr)[pos]; \
(collmskptr)[pos] |= (sprite_bit); \
} while (0)
#endif
/* Hires sprites */
#define _SPRITE_MASK(msk, gfxmsk, size, sprite_bit, imgptr, collmskptr, \
color, collmsk_return, DRAW) \
do { \
DWORD __m; \
int __p; \
\
for (__m = 1 << ((size) - 1), __p = 0; \
__p < (size); \
__p++, __m >>= 1) \
if ((msk) & __m) { \
if ((gfxmsk) & __m) \
DRAW(0, sprite_bit, imgptr, collmskptr, __p, color, \
collmsk_return); \
else \
DRAW(1, sprite_bit, imgptr, collmskptr, __p, color, \
collmsk_return); \
} \
} while (0)
#define SPRITE_MASK(msk, gfxmsk, size, sprite_bit, imgptr, collmskptr, \
color, collmsk_return) \
_SPRITE_MASK(msk, gfxmsk, size, sprite_bit, imgptr, collmskptr, \
color, collmsk_return, SPRITE_PIXEL)
#define SPRITE_MASK_2x(msk, gfxmsk, size, sprite_bit, imgptr, \
collmskptr, color, collmsk_return) \
_SPRITE_MASK(msk, gfxmsk, size, sprite_bit, imgptr, collmskptr, \
color, collmsk_return, SPRITE_PIXEL_2x)
/* Multicolor sprites */
#define _MCSPRITE_MASK(mcmsk, gfxmsk, size, sprite_bit, imgptr, \
collmskptr, pixel_table, collmsk_return, DRAW) \
do { \
DWORD __m; \
int __p; \
\
for (__m = 1 << ((size) - 1), __p = 0; __p < (size); \
__p += 2, __m >>= 2, (mcmsk) <<= 2) { \
BYTE __c = ((mcmsk) >> 22) & 0x3; \
\
if (__c) { \
if ((gfxmsk) & __m) \
DRAW(0, sprite_bit, imgptr, collmskptr, __p, \
pixel_table[__c], collmsk_return); \
else \
DRAW(1, sprite_bit, imgptr, collmskptr, __p, \
pixel_table[__c], collmsk_return); \
if ((gfxmsk) & (__m >> 1)) \
DRAW(0, sprite_bit, imgptr, collmskptr, __p + 1, \
pixel_table[__c], collmsk_return); \
else \
DRAW(1, sprite_bit, imgptr, collmskptr, __p + 1, \
pixel_table[__c], collmsk_return); \
} \
} \
} while (0)
#define MCSPRITE_MASK(mcmsk, gfxmsk, size, sprite_bit, imgptr, \
collmskptr, pixel_table, collmsk_return) \
_MCSPRITE_MASK(mcmsk, gfxmsk, size, sprite_bit, imgptr, \
collmskptr, pixel_table, collmsk_return, \
SPRITE_PIXEL)
#define MCSPRITE_MASK_2x(mcmsk, gfxmsk, size, sprite_bit, imgptr, \
collmskptr, pixel_table, collmsk_return) \
_MCSPRITE_MASK(mcmsk, gfxmsk, size, sprite_bit, imgptr, \
collmskptr, pixel_table, collmsk_return, \
SPRITE_PIXEL_2x)
#define _MCSPRITE_DOUBLE_MASK(mcmsk, gfxmsk, size, sprite_bit, \
imgptr, collmskptr, pixel_table, \
collmsk_return, DRAW) \
do { \
DWORD __m; \
int __p, __i; \
\
for (__m = 1 << ((size) - 1), __p = 0; __p < (size); \
__p += 4, (mcmsk) <<= 2) { \
BYTE __c = ((mcmsk) >> 22) & 0x3; \
\
for (__i = 0; __i < 4; __i++, __m >>= 1) \
if (__c) { \
if ((gfxmsk) & __m) \
DRAW(0, sprite_bit, imgptr, collmskptr, \
__p + __i, pixel_table[__c], \
collmsk_return); \
else \
DRAW(1, sprite_bit, imgptr, collmskptr, \
__p + __i, pixel_table[__c], \
collmsk_return); \
} \
} \
} while (0)
#define MCSPRITE_DOUBLE_MASK(mcmsk, gfxmsk, size, sprite_bit, imgptr, \
collmskptr, pixel_table, collmsk_return) \
_MCSPRITE_DOUBLE_MASK(mcmsk, gfxmsk, size, sprite_bit, imgptr, \
collmskptr, pixel_table, collmsk_return, \
SPRITE_PIXEL)
#define MCSPRITE_DOUBLE_MASK_2x(mcmsk, gfxmsk, size, sprite_bit, \
imgptr, collmskptr, pixel_table, \
collmsk_return) \
_MCSPRITE_DOUBLE_MASK(mcmsk, gfxmsk, size, sprite_bit, imgptr, \
collmskptr, pixel_table, collmsk_return, \
SPRITE_PIXEL_2x)
These are the contents of the former NiCE NeXT User Group NeXTSTEP/OpenStep software archive, currently hosted by Netfuture.ch.