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26 lines
1004 B
Plaintext
26 lines
1004 B
Plaintext
GLOBAL_LIST_EMPTY(bitflag_lists)
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/**
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* System for storing bitflags past the 24 limit, making use of an associative list.
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*
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* Macro converts a list of integers into an associative list of bitflag entries for quicker comparison.
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* Example: list(0, 4, 26, 32)) => list( "0" = ( (1<<0) | (1<<4) ), "1" = ( (1<<2) | (1<<8) ) )
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* Lists are cached into a global list of lists to avoid identical duplicates.
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* This system makes value comparisons faster than pairing every element of one list with every element of the other for evaluation.
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*
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* Arguments:
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* * target - List of integers.
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*/
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#define SET_BITFLAG_LIST(target) \
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do { \
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var/txt_signature = target.Join("-"); \
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if(!GLOB.bitflag_lists[txt_signature]) { \
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var/list/new_bitflag_list = list(); \
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for(var/value in target) { \
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new_bitflag_list["[round(value / 24)]"] |= (1 << (value % 24)); \
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}; \
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GLOB.bitflag_lists[txt_signature] = new_bitflag_list; \
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}; \
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target = GLOB.bitflag_lists[txt_signature]; \
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} while (FALSE)
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