101 lines
2.7 KiB
C++
101 lines
2.7 KiB
C++
// Copyright Epic Games, Inc. All Rights Reserved.
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// Modified version of Recast/Detour's source file
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//
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// Copyright (c) 2009-2010 Mikko Mononen memon@inside.org
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//
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// This software is provided 'as-is', without any express or implied
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// warranty. In no event will the authors be held liable for any damages
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// arising from the use of this software.
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// Permission is granted to anyone to use this software for any purpose,
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// including commercial applications, and to alter it and redistribute it
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// freely, subject to the following restrictions:
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// 1. The origin of this software must not be misrepresented; you must not
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// claim that you wrote the original software. If you use this software
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// in a product, an acknowledgment in the product documentation would be
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// appreciated but is not required.
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// 2. Altered source versions must be plainly marked as such, and must not be
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// misrepresented as being the original software.
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// 3. This notice may not be removed or altered from any source distribution.
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//
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#include "Detour/DetourAlloc.h"
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static void *dtAllocDefault(int size, dtAllocHint)
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{
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return malloc(size);
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}
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static void dtFreeDefault(void *ptr, dtAllocHint) //UE
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{
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free(ptr);
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}
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static dtAllocFunc* sAllocFunc = dtAllocDefault;
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static dtFreeFunc* sFreeFunc = dtFreeDefault;
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void dtAllocSetCustom(dtAllocFunc *allocFunc, dtFreeFunc *freeFunc)
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{
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sAllocFunc = allocFunc ? allocFunc : dtAllocDefault;
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sFreeFunc = freeFunc ? freeFunc : dtFreeDefault;
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}
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void* dtAlloc(int size, dtAllocHint hint)
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{
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return sAllocFunc(size, hint);
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}
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//@UE BEGIN Added dtAllocHint.
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void dtFree(void* ptr, dtAllocHint hint)
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{
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if (ptr)
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sFreeFunc(ptr, hint);
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}
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//@UE END
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void dtMemCpy(void* dst, void* src, int size)
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{
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memcpy(dst, src, size);
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}
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/// @class dtIntArray
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///
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/// While it is possible to pre-allocate a specific array size during
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/// construction or by using the #resize method, certain methods will
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/// automatically resize the array as needed.
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///
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/// @warning The array memory is not initialized to zero when the size is
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/// manually set during construction or when using #resize.
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/// @par
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///
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/// Using this method ensures the array is at least large enough to hold
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/// the specified number of elements. This can improve performance by
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/// avoiding auto-resizing during use.
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void dtIntArray::resize(int n)
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{
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if (n > m_cap)
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{
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if (!m_cap) m_cap = n;
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while (m_cap < n) m_cap *= 2;
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int* newData = (int*)dtAlloc(m_cap*sizeof(int), DT_ALLOC_TEMP);
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if (m_size && newData) memcpy(newData, m_data, m_size*sizeof(int));
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dtFree(m_data, DT_ALLOC_TEMP);
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m_data = newData;
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}
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m_size = n;
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}
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void dtIntArray::copy(const dtIntArray& src)
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{
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if (src.size() > 0)
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{
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resize(src.size());
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memcpy(m_data, src.getData(), m_size);
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}
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else
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{
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resize(0);
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}
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}
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