mirror of
https://github.com/libretro/scummvm.git
synced 2024-12-12 12:09:15 +00:00
8bc861cb1a
This emulates the "slow" render mode of the Smacker lib, which returns the blocks changed each frame instead of full frames. Nightlong relies on this to correctly refresh its screen buffer.
77 lines
1.7 KiB
C++
77 lines
1.7 KiB
C++
/* ScummVM - Graphic Adventure Engine
|
|
*
|
|
* ScummVM is the legal property of its developers, whose names
|
|
* are too numerous to list here. Please refer to the COPYRIGHT
|
|
* file distributed with this source distribution.
|
|
*
|
|
* 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
|
|
*
|
|
*/
|
|
|
|
#ifndef COMMON_BITARRAY_H
|
|
#define COMMON_BITARRAY_H
|
|
|
|
#include "common/scummsys.h"
|
|
|
|
namespace Common {
|
|
|
|
class BitArray {
|
|
public:
|
|
BitArray() {
|
|
_bitcount = 0;
|
|
_bits = nullptr;
|
|
}
|
|
|
|
explicit BitArray(uint bitcount) {
|
|
_bits = nullptr;
|
|
set_size(bitcount);
|
|
}
|
|
|
|
~BitArray() {
|
|
free(_bits);
|
|
}
|
|
|
|
void set_size(uint bitcount) {
|
|
free(_bits);
|
|
_bitcount = bitcount;
|
|
_bits = (byte*)malloc((bitcount + 7) / 8);
|
|
clear();
|
|
}
|
|
|
|
void clear() {
|
|
memset(_bits, 0, (_bitcount + 7) / 8);
|
|
}
|
|
|
|
void set(uint bit) {
|
|
_bits[bit / 8] |= (1 << (bit % 8));
|
|
}
|
|
|
|
void unset(uint bit) {
|
|
_bits[bit / 8] &= ~(1 << (bit % 8));
|
|
}
|
|
|
|
bool get(uint bit) {
|
|
return _bits[bit / 8] & (1 << (bit % 8));
|
|
}
|
|
|
|
private:
|
|
uint _bitcount;
|
|
byte *_bits;
|
|
};
|
|
|
|
} // End of namespace Common
|
|
|
|
#endif
|