mirror of
https://github.com/libretro/scummvm.git
synced 2024-12-29 21:24:53 +00:00
118 lines
3.2 KiB
C++
118 lines
3.2 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.
|
|
*
|
|
* Additional copyright for this file:
|
|
* Copyright (C) 1995-1997 Presto Studios, 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., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
|
|
*
|
|
*/
|
|
|
|
#ifndef PEGASUS_UTIL_H
|
|
#define PEGASUS_UTIL_H
|
|
|
|
#include "common/stream.h"
|
|
|
|
#include "pegasus/types.h"
|
|
|
|
namespace Common {
|
|
class RandomSource;
|
|
}
|
|
|
|
namespace Pegasus {
|
|
|
|
class IDObject {
|
|
public:
|
|
IDObject(const int32 id);
|
|
~IDObject();
|
|
|
|
int32 getObjectID() const;
|
|
|
|
private:
|
|
int32 _objectID;
|
|
};
|
|
|
|
#define NUM_FLAGS (sizeof(Unit) * 8)
|
|
#define BIT_INDEX_SHIFT (sizeof(Unit) + 2 - (sizeof(Unit)) / 3)
|
|
#define BIT_INDEX_MASK (NUM_FLAGS - 1)
|
|
|
|
template <typename Unit, uint32 kNumFlags>
|
|
class FlagsArray {
|
|
public:
|
|
FlagsArray() { clearAllFlags(); }
|
|
void clearAllFlags() { memset(_flags, 0, sizeof(_flags)); }
|
|
void setAllFlags() { memset(_flags, ~((Unit)0), sizeof(_flags)); }
|
|
void setFlag(uint32 flag) { _flags[flag >> BIT_INDEX_SHIFT] |= 1 << (flag & BIT_INDEX_MASK); }
|
|
void clearFlag(uint32 flag) { _flags[flag >> BIT_INDEX_SHIFT] &= ~(1 << (flag & BIT_INDEX_MASK)); }
|
|
void setFlag(uint32 flag, bool val) { if (val) setFlag(flag); else clearFlag(flag); }
|
|
bool getFlag(uint32 flag) { return (_flags[flag >> BIT_INDEX_SHIFT] & (1 << (flag & BIT_INDEX_MASK))) != 0; }
|
|
bool anyFlagSet() {
|
|
for (uint32 i = 0; i < sizeof(_flags); i++)
|
|
if (_flags[i] != 0)
|
|
return true;
|
|
return false;
|
|
}
|
|
|
|
void readFromStream(Common::ReadStream *stream) {
|
|
// Shortcut
|
|
if (sizeof(Unit) == 1) {
|
|
stream->read(_flags, sizeof(_flags));
|
|
return;
|
|
}
|
|
|
|
for (uint32 i = 0; i < ARRAYSIZE(_flags); i++) {
|
|
if (sizeof(Unit) == 2)
|
|
_flags[i] = stream->readUint16BE();
|
|
else /* if (sizeof(Unit) == 4) */
|
|
_flags[i] = stream->readUint32BE();
|
|
}
|
|
}
|
|
|
|
void writeToStream(Common::WriteStream *stream) {
|
|
// Shortcut
|
|
if (sizeof(Unit) == 1) {
|
|
stream->write(_flags, sizeof(_flags));
|
|
return;
|
|
}
|
|
|
|
for (uint32 i = 0; i < ARRAYSIZE(_flags); i++) {
|
|
if (sizeof(Unit) == 2)
|
|
stream->writeUint16BE(_flags[i]);
|
|
else /* if (sizeof(Unit) == 4) */
|
|
stream->writeUint32BE(_flags[i]);
|
|
}
|
|
}
|
|
|
|
private:
|
|
Unit _flags[(kNumFlags - 1) / NUM_FLAGS + 1];
|
|
};
|
|
|
|
#undef NUM_FLAGS
|
|
#undef BIT_INDEX_SHIFT
|
|
#undef BIT_INDEX_MASK
|
|
|
|
int32 linearInterp(const int32 start1, const int32 stop1, const int32 current1, const int32 start2, const int32 stop2);
|
|
|
|
int32 pegasusRound(const int32 a, const int32 b);
|
|
|
|
uint32 tickCount();
|
|
|
|
} // End of namespace Pegasus
|
|
|
|
#endif
|