mirror of https://github.com/minetest/irrlicht.git
48 lines
1.3 KiB
C++
48 lines
1.3 KiB
C++
// This file is part of the "Irrlicht Engine".
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// For conditions of distribution and use, see copyright notice in irrlicht.h
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#ifndef IRR_I_USER_DATA_H_INCLUDED
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#define IRR_I_USER_DATA_H_INCLUDED
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#include "irrTypes.h"
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namespace irr
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{
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namespace io
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{
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class IAttributes;
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struct SAttributeReadWriteOptions;
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//! Irrlicht may allow users to set their own data via those pointers
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//! Irrlicht has no memory control over IUserData, the user is completely responsible for that
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class IUserData
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{
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public:
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//! To identify the class type.
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//! You can for example use MAKE_IRR_ID to create four CC codes
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virtual irr::u32 getType() const { return 0; }
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//! To be overloaded if comparisons matter
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//! You can then cast other to your derived class
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virtual bool compare(const IUserData& other) const
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{
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return getType() == other.getType();
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}
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//! Used internally by Irrlicht to check if data has changed
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bool operator!=(const IUserData& other) const
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{
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return !compare(other);
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}
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protected:
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// Irrlicht is never allowed to delete this
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// If users want to delete such objects they should go over derived classes
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~IUserData() {}
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};
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} // end namespace io
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} // end namespace irr
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#endif // IRR_I_USER_DATA_H_INCLUDED
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