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https://github.com/zeldaret/ss
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robojumper
38 lines
1008 B
C++
38 lines
1008 B
C++
#ifndef D_FLAG_FLAG_INDEX_H
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#define D_FLAG_FLAG_INDEX_H
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#include "common.h"
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/**
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* @brief Defines a single story or item flag.
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*/
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struct FlagDefinition {
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u8 mIndex;
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u8 mShiftMask;
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};
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/**
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* @brief Helper class for packing and unpacking flag data.
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*
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* Some flag managers store their data in a packed format, where
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* flags have a variable number of bits and can appear in varied
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* locations within a halfword.
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*/
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class FlagIndex {
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u16 mDefinitionsCount;
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FlagDefinition *mpDefinitions;
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public:
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u16 calculateMask(s32 shift);
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void doNothing(u32 unused);
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FlagIndex(u16 count, FlagDefinition *definitions);
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void prepareIndexShiftMask(u16 counterIdx, u32 flagCount, u16 *pIndex, u8 *pShift, u16 *pMask);
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u16 maskForIdx(u16 index, u16 flagCount);
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u16 getCounterOrFlag(u16 counterIdx, const u16 *pData, u32 flagCount);
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void setCounterOrFlag(u16 counterIdx, u16 *pData, u32 flagCount, u32 value);
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u32 checkFlagValid(u16 counterIdx, u32 flagCount);
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};
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#endif
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