Remove unused Bullet module and thirdparty code

It has been disabled in `master` since one year (#45852) and our plan
is for Bullet, and possibly other thirdparty physics engines, to be
implemented via GDExtension so that they can be selected by the users
who need them.

1 files changed, 0 insertions, 266 deletions

diff --git a/thirdparty/bullet/BulletCollision/Gimpact/btGenericPoolAllocator.cpp b/thirdparty/bullet/BulletCollision/Gimpact/btGenericPoolAllocator.cpp
deleted file mode 100644
index bfdb3db5d0..0000000000
--- a/thirdparty/bullet/BulletCollision/Gimpact/btGenericPoolAllocator.cpp
+++ /dev/null
@@ -1,266 +0,0 @@
-/*! \file btGenericPoolAllocator.cpp
-\author Francisco Leon Najera. email projectileman@yahoo.com
-
-General purpose allocator class
-*/
-/*
-Bullet Continuous Collision Detection and Physics Library
-Copyright (c) 2003-2006 Erwin Coumans  http://continuousphysics.com/Bullet/
-
-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.
-*/
-
-#include "btGenericPoolAllocator.h"
-
-/// *************** btGenericMemoryPool ******************///////////
-
-size_t btGenericMemoryPool::allocate_from_free_nodes(size_t num_elements)
-{
-	size_t ptr = BT_UINT_MAX;
-
-	if (m_free_nodes_count == 0) return BT_UINT_MAX;
-	// find an avaliable free node with the correct size
-	size_t revindex = m_free_nodes_count;
-
-	while (revindex-- && ptr == BT_UINT_MAX)
-	{
-		if (m_allocated_sizes[m_free_nodes[revindex]] >= num_elements)
-		{
-			ptr = revindex;
-		}
-	}
-	if (ptr == BT_UINT_MAX) return BT_UINT_MAX;  // not found
-
-	revindex = ptr;
-	ptr = m_free_nodes[revindex];
-	// post: ptr contains the node index, and revindex the index in m_free_nodes
-
-	size_t finalsize = m_allocated_sizes[ptr];
-	finalsize -= num_elements;
-
-	m_allocated_sizes[ptr] = num_elements;
-
-	// post: finalsize>=0, m_allocated_sizes[ptr] has the requested size
-
-	if (finalsize > 0)  // preserve free node, there are some free memory
-	{
-		m_free_nodes[revindex] = ptr + num_elements;
-		m_allocated_sizes[ptr + num_elements] = finalsize;
-	}
-	else  // delete free node
-	{
-		// swap with end
-		m_free_nodes[revindex] = m_free_nodes[m_free_nodes_count - 1];
-		m_free_nodes_count--;
-	}
-
-	return ptr;
-}
-
-size_t btGenericMemoryPool::allocate_from_pool(size_t num_elements)
-{
-	if (m_allocated_count + num_elements > m_max_element_count) return BT_UINT_MAX;
-
-	size_t ptr = m_allocated_count;
-
-	m_allocated_sizes[m_allocated_count] = num_elements;
-	m_allocated_count += num_elements;
-
-	return ptr;
-}
-
-void btGenericMemoryPool::init_pool(size_t element_size, size_t element_count)
-{
-	m_allocated_count = 0;
-	m_free_nodes_count = 0;
-
-	m_element_size = element_size;
-	m_max_element_count = element_count;
-
-	m_pool = (unsigned char *)btAlignedAlloc(m_element_size * m_max_element_count, 16);
-	m_free_nodes = (size_t *)btAlignedAlloc(sizeof(size_t) * m_max_element_count, 16);
-	m_allocated_sizes = (size_t *)btAlignedAlloc(sizeof(size_t) * m_max_element_count, 16);
-
-	for (size_t i = 0; i < m_max_element_count; i++)
-	{
-		m_allocated_sizes[i] = 0;
-	}
-}
-
-void btGenericMemoryPool::end_pool()
-{
-	btAlignedFree(m_pool);
-	btAlignedFree(m_free_nodes);
-	btAlignedFree(m_allocated_sizes);
-	m_allocated_count = 0;
-	m_free_nodes_count = 0;
-}
-
-//! Allocates memory in pool
-/*!
-\param size_bytes size in bytes of the buffer
-*/
-void *btGenericMemoryPool::allocate(size_t size_bytes)
-{
-	size_t module = size_bytes % m_element_size;
-	size_t element_count = size_bytes / m_element_size;
-	if (module > 0) element_count++;
-
-	size_t alloc_pos = allocate_from_free_nodes(element_count);
-	// a free node is found
-	if (alloc_pos != BT_UINT_MAX)
-	{
-		return get_element_data(alloc_pos);
-	}
-	// allocate directly on pool
-	alloc_pos = allocate_from_pool(element_count);
-
-	if (alloc_pos == BT_UINT_MAX) return NULL;  // not space
-	return get_element_data(alloc_pos);
-}
-
-bool btGenericMemoryPool::freeMemory(void *pointer)
-{
-	unsigned char *pointer_pos = (unsigned char *)pointer;
-	unsigned char *pool_pos = (unsigned char *)m_pool;
-	// calc offset
-	if (pointer_pos < pool_pos) return false;  //other pool
-	size_t offset = size_t(pointer_pos - pool_pos);
-	if (offset >= get_pool_capacity()) return false;  // far away
-
-	// find free position
-	m_free_nodes[m_free_nodes_count] = offset / m_element_size;
-	m_free_nodes_count++;
-	return true;
-}
-
-/// *******************! btGenericPoolAllocator *******************!///
-
-btGenericPoolAllocator::~btGenericPoolAllocator()
-{
-	// destroy pools
-	size_t i;
-	for (i = 0; i < m_pool_count; i++)
-	{
-		m_pools[i]->end_pool();
-		btAlignedFree(m_pools[i]);
-	}
-}
-
-// creates a pool
-btGenericMemoryPool *btGenericPoolAllocator::push_new_pool()
-{
-	if (m_pool_count >= BT_DEFAULT_MAX_POOLS) return NULL;
-
-	btGenericMemoryPool *newptr = (btGenericMemoryPool *)btAlignedAlloc(sizeof(btGenericMemoryPool), 16);
-
-	m_pools[m_pool_count] = newptr;
-
-	m_pools[m_pool_count]->init_pool(m_pool_element_size, m_pool_element_count);
-
-	m_pool_count++;
-	return newptr;
-}
-
-void *btGenericPoolAllocator::failback_alloc(size_t size_bytes)
-{
-	btGenericMemoryPool *pool = NULL;
-
-	if (size_bytes <= get_pool_capacity())
-	{
-		pool = push_new_pool();
-	}
-
-	if (pool == NULL)  // failback
-	{
-		return btAlignedAlloc(size_bytes, 16);
-	}
-
-	return pool->allocate(size_bytes);
-}
-
-bool btGenericPoolAllocator::failback_free(void *pointer)
-{
-	btAlignedFree(pointer);
-	return true;
-}
-
-//! Allocates memory in pool
-/*!
-\param size_bytes size in bytes of the buffer
-*/
-void *btGenericPoolAllocator::allocate(size_t size_bytes)
-{
-	void *ptr = NULL;
-
-	size_t i = 0;
-	while (i < m_pool_count && ptr == NULL)
-	{
-		ptr = m_pools[i]->allocate(size_bytes);
-		++i;
-	}
-
-	if (ptr) return ptr;
-
-	return failback_alloc(size_bytes);
-}
-
-bool btGenericPoolAllocator::freeMemory(void *pointer)
-{
-	bool result = false;
-
-	size_t i = 0;
-	while (i < m_pool_count && result == false)
-	{
-		result = m_pools[i]->freeMemory(pointer);
-		++i;
-	}
-
-	if (result) return true;
-
-	return failback_free(pointer);
-}
-
-/// ************** STANDARD ALLOCATOR ***************************///
-
-#define BT_DEFAULT_POOL_SIZE 32768
-#define BT_DEFAULT_POOL_ELEMENT_SIZE 8
-
-// main allocator
-class GIM_STANDARD_ALLOCATOR : public btGenericPoolAllocator
-{
-public:
-	GIM_STANDARD_ALLOCATOR() : btGenericPoolAllocator(BT_DEFAULT_POOL_ELEMENT_SIZE, BT_DEFAULT_POOL_SIZE)
-	{
-	}
-};
-
-// global allocator
-GIM_STANDARD_ALLOCATOR g_main_allocator;
-
-void *btPoolAlloc(size_t size)
-{
-	return g_main_allocator.allocate(size);
-}
-
-void *btPoolRealloc(void *ptr, size_t oldsize, size_t newsize)
-{
-	void *newptr = btPoolAlloc(newsize);
-	size_t copysize = oldsize < newsize ? oldsize : newsize;
-	memcpy(newptr, ptr, copysize);
-	btPoolFree(ptr);
-	return newptr;
-}
-
-void btPoolFree(void *ptr)
-{
-	g_main_allocator.freeMemory(ptr);
-}