57 lines
2.7 KiB
C++
57 lines
2.7 KiB
C++
/********************************************************************************
|
|
* ReactPhysics3D physics library, http://www.reactphysics3d.com *
|
|
* Copyright (c) 2010-2018 Daniel Chappuis *
|
|
*********************************************************************************
|
|
* *
|
|
* 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. *
|
|
* *
|
|
********************************************************************************/
|
|
|
|
// Libraries
|
|
#include "Entity.h"
|
|
#include <cassert>
|
|
|
|
using namespace reactphysics3d;
|
|
|
|
// Static members initialization
|
|
const uint32 Entity::ENTITY_INDEX_BITS = 24;
|
|
const uint32 Entity::ENTITY_INDEX_MASK = (1 << Entity::ENTITY_INDEX_BITS) - 1;
|
|
const uint32 Entity::ENTITY_GENERATION_BITS = 8;
|
|
const uint32 Entity::ENTITY_GENERATION_MASK = (1 << Entity::ENTITY_GENERATION_BITS) - 1;
|
|
const uint32 Entity::MINIMUM_FREE_INDICES = 1024;
|
|
|
|
// Constructor
|
|
Entity::Entity(uint32 index, uint32 generation)
|
|
:id((index & ENTITY_INDEX_MASK) | ((generation & ENTITY_GENERATION_MASK) << ENTITY_INDEX_BITS)) {
|
|
|
|
assert(getIndex() == index);
|
|
assert(getGeneration() == generation);
|
|
}
|
|
|
|
// Assignment operator
|
|
Entity& Entity::operator=(const Entity& entity) {
|
|
|
|
if (&entity != this) {
|
|
|
|
id = entity.id;
|
|
}
|
|
|
|
return *this;
|
|
}
|