69 lines
1.5 KiB
C++
69 lines
1.5 KiB
C++
// Jolt Physics Library (https://github.com/jrouwe/JoltPhysics)
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// SPDX-FileCopyrightText: 2021 Jorrit Rouwe
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// SPDX-License-Identifier: MIT
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#pragma once
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#ifdef JPH_ENABLE_ASSERTS
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JPH_NAMESPACE_BEGIN
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class JPH_EXPORT BodyAccess
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{
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public:
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/// Access rules, used to detect race conditions during simulation
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enum class EAccess : uint8
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{
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None = 0,
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Read = 1,
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ReadWrite = 3,
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};
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/// Grant a scope specific access rights on the current thread
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class Grant
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{
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public:
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inline Grant(EAccess inVelocity, EAccess inPosition)
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{
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EAccess &velocity = sVelocityAccess();
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EAccess &position = sPositionAccess();
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JPH_ASSERT(velocity == EAccess::ReadWrite);
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JPH_ASSERT(position == EAccess::ReadWrite);
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velocity = inVelocity;
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position = inPosition;
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}
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inline ~Grant()
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{
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sVelocityAccess() = EAccess::ReadWrite;
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sPositionAccess() = EAccess::ReadWrite;
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}
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};
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/// Check if we have permission
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static inline bool sCheckRights(EAccess inRights, EAccess inDesiredRights)
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{
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return (uint8(inRights) & uint8(inDesiredRights)) == uint8(inDesiredRights);
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}
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/// Access to read/write velocities
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static inline EAccess & sVelocityAccess()
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{
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static thread_local EAccess sAccess = BodyAccess::EAccess::ReadWrite;
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return sAccess;
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}
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/// Access to read/write positions
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static inline EAccess & sPositionAccess()
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{
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static thread_local EAccess sAccess = BodyAccess::EAccess::ReadWrite;
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return sAccess;
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}
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};
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JPH_NAMESPACE_END
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#endif // JPH_ENABLE_ASSERTS
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