Box2D
3.1.0
A 2D physics engine for games
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id.h
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// SPDX-FileCopyrightText: 2023 Erin Catto
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// SPDX-License-Identifier: MIT
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#pragma once
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#include "base.h"
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#include <stdint.h>
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typedef
struct
b2WorldId
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{
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uint16_t index1;
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uint16_t revision;
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}
b2WorldId
;
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typedef
struct
b2BodyId
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{
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int32_t index1;
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uint16_t world0;
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uint16_t revision;
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}
b2BodyId
;
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typedef
struct
b2ShapeId
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{
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int32_t index1;
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uint16_t world0;
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uint16_t revision;
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}
b2ShapeId
;
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typedef
struct
b2JointId
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{
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int32_t index1;
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uint16_t world0;
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uint16_t revision;
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}
b2JointId
;
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typedef
struct
b2ChainId
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{
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int32_t index1;
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uint16_t world0;
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uint16_t revision;
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}
b2ChainId
;
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static
const
b2WorldId
b2_nullWorldId = B2_ZERO_INIT;
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static
const
b2BodyId
b2_nullBodyId = B2_ZERO_INIT;
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static
const
b2ShapeId
b2_nullShapeId = B2_ZERO_INIT;
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static
const
b2JointId
b2_nullJointId = B2_ZERO_INIT;
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static
const
b2ChainId
b2_nullChainId = B2_ZERO_INIT;
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#define B2_IS_NULL( id ) ( id.index1 == 0 )
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#define B2_IS_NON_NULL( id ) ( id.index1 != 0 )
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#define B2_ID_EQUALS( id1, id2 ) ( id1.index1 == id2.index1 && id1.world0 == id2.world0 && id1.revision == id2.revision )
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b2BodyId
Body id references a body instance. This should be treated as an opaque handle.
Definition
id.h:45
b2ChainId
Chain id references a chain instances. This should be treated as an opaque handle.
Definition
id.h:69
b2JointId
Joint id references a joint instance. This should be treated as an opaque handle.
Definition
id.h:61
b2ShapeId
Shape id references a shape instance. This should be treated as an opaque handle.
Definition
id.h:53
b2WorldId
World id references a world instance. This should be treated as an opaque handle.
Definition
id.h:38
include
box2d
id.h
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