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PEGASUS: Import MMUtilities functions
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Matthew Hoops
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Jun 15, 2011
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/* 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 | ||
* | ||
* 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. | ||
* | ||
*/ | ||
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#include "common/random.h" | ||
#include "common/util.h" | ||
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#include "pegasus/MMShell/Utilities/MMUtilities.h" | ||
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namespace Pegasus { | ||
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inline int32 Round(const int32 a, const int32 b) { | ||
if (b < 0) | ||
if (a < 0) | ||
return -((a - (-b >> 1)) / -b); | ||
else | ||
return -((a + (-b >> 1)) / -b); | ||
else | ||
if (a < 0) | ||
return (a - (b >> 1)) / b; | ||
else | ||
return (a + (b >> 1)) / b; | ||
} | ||
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int32 LinearInterp(const int32 start1, const int32 stop1, const int32 current1, const int32 start2, const int32 stop2) { | ||
if (start2 == stop2) | ||
return start2; | ||
else | ||
return start2 + Round((current1 - start1) * (stop2 - start2), (stop1 - start1)); | ||
} | ||
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void ShuffleArray(int32 *arr, int32 count, Common::RandomSource &random) { | ||
if (count > 1) { | ||
for (int32 i = 1; i < count; ++i) { | ||
int32 j = random.getRandomNumber(i); | ||
if (j != i) | ||
SWAP(arr[i], arr[j]); | ||
} | ||
} | ||
} | ||
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} // End of namespace Pegasus |
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/* 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 | ||
* | ||
* 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. | ||
* | ||
*/ | ||
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#ifndef PEGASUS_MMSHELL_UTILITIES_MMUTILITIES_H | ||
#define PEGASUS_MMSHELL_UTILITIES_MMUTILITIES_H | ||
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#include "common/scummsys.h" | ||
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namespace Common { | ||
class RandomSource; | ||
} | ||
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namespace Pegasus { | ||
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int32 LinearInterp(const int32 start1, const int32 stop1, const int32 current1, const int32 start2, const int32 stop2); | ||
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void ShuffleArray(int32 *arr, int32 count, Common::RandomSource &random); | ||
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} // End of namespace Pegasus | ||
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#endif |
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