bullet: Streamline bundling, remove extraneous src/ folder

Document version and how to extract sources in thirdparty/README.md.
Drop unnecessary CMake and Premake files.
Simplify SCsub, drop unused one.

1 files changed, 121 insertions, 0 deletions

diff --git a/thirdparty/bullet/Bullet3Common/b3PoolAllocator.h b/thirdparty/bullet/Bullet3Common/b3PoolAllocator.h
new file mode 100644
index 0000000000..2fcdcf5b24
--- /dev/null
+++ b/thirdparty/bullet/Bullet3Common/b3PoolAllocator.h
@@ -0,0 +1,121 @@
+/*
+Copyright (c) 2003-2013 Gino van den Bergen / Erwin Coumans  http://bulletphysics.org
+
+This software is provided 'as-is', without any express or implied warranty.
+In no event will the authors be held liable for any damages arising from the use of this software.
+Permission is granted to anyone to use this software for any purpose, 
+including commercial applications, and to alter it and redistribute it freely, 
+subject to the following restrictions:
+
+1. The origin of this software must not be misrepresented; you must not claim that you wrote the original software. If you use this software in a product, an acknowledgment in the product documentation would be appreciated but is not required.
+2. Altered source versions must be plainly marked as such, and must not be misrepresented as being the original software.
+3. This notice may not be removed or altered from any source distribution.
+*/
+
+
+#ifndef _BT_POOL_ALLOCATOR_H
+#define _BT_POOL_ALLOCATOR_H
+
+#include "b3Scalar.h"
+#include "b3AlignedAllocator.h"
+
+///The b3PoolAllocator class allows to efficiently allocate a large pool of objects, instead of dynamically allocating them separately.
+class b3PoolAllocator
+{
+	int				m_elemSize;
+	int				m_maxElements;
+	int				m_freeCount;
+	void*			m_firstFree;
+	unsigned char*	m_pool;
+
+public:
+
+	b3PoolAllocator(int elemSize, int maxElements)
+		:m_elemSize(elemSize),
+		m_maxElements(maxElements)
+	{
+		m_pool = (unsigned char*) b3AlignedAlloc( static_cast<unsigned int>(m_elemSize*m_maxElements),16);
+
+		unsigned char* p = m_pool;
+        m_firstFree = p;
+        m_freeCount = m_maxElements;
+        int count = m_maxElements;
+        while (--count) {
+            *(void**)p = (p + m_elemSize);
+            p += m_elemSize;
+        }
+        *(void**)p = 0;
+    }
+
+	~b3PoolAllocator()
+	{
+		b3AlignedFree( m_pool);
+	}
+
+	int	getFreeCount() const
+	{
+		return m_freeCount;
+	}
+
+	int getUsedCount() const
+	{
+		return m_maxElements - m_freeCount;
+	}
+
+	int getMaxCount() const
+	{
+		return m_maxElements;
+	}
+
+	void*	allocate(int size)
+	{
+		// release mode fix
+		(void)size;
+		b3Assert(!size || size<=m_elemSize);
+		b3Assert(m_freeCount>0);
+        void* result = m_firstFree;
+        m_firstFree = *(void**)m_firstFree;
+        --m_freeCount;
+        return result;
+	}
+
+	bool validPtr(void* ptr)
+	{
+		if (ptr) {
+			if (((unsigned char*)ptr >= m_pool && (unsigned char*)ptr < m_pool + m_maxElements * m_elemSize))
+			{
+				return true;
+			}
+		}
+		return false;
+	}
+
+	void	freeMemory(void* ptr)
+	{
+		 if (ptr) {
+            b3Assert((unsigned char*)ptr >= m_pool && (unsigned char*)ptr < m_pool + m_maxElements * m_elemSize);
+
+            *(void**)ptr = m_firstFree;
+            m_firstFree = ptr;
+            ++m_freeCount;
+        }
+	}
+
+	int	getElementSize() const
+	{
+		return m_elemSize;
+	}
+
+	unsigned char*	getPoolAddress()
+	{
+		return m_pool;
+	}
+
+	const unsigned char*	getPoolAddress() const
+	{
+		return m_pool;
+	}
+
+};
+
+#endif //_BT_POOL_ALLOCATOR_H