Feature #656 ยป 0002-Add-range_adjc_iterate-and-related-macros.patch
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} cardinal_adjc_iterate_end; \
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} cardinal_adjc_iterate_end;
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/* Helper for range_adjc_*_iterate */
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#define _RANGE_DIRLIST(_range, _nmap) \
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((_range) == REQ_RANGE_ADJACENT ? (_nmap)->valid_dirs \
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: (_range) == REQ_RANGE_CADJACENT ? (_nmap)->cardinal_dirs \
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: nullptr)
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#define _RANGE_DIRCOUNT(_range, _nmap) \
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((_range) == REQ_RANGE_ADJACENT ? (_nmap)->num_valid_dirs \
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: (_range) == REQ_RANGE_CADJACENT ? (_nmap)->num_cardinal_dirs \
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: 0)
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/* Iterate through either adjacent or cardinally adjacent tiles (or none)
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* depending on the given requirement range. The range must not change
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* during iteration. */
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#define range_adjc_iterate(nmap, center_tile, range, itr_tile) \
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range_adjc_dir_iterate(nmap, center_tile, range, itr_tile, _dir_itr##itr_tile)
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#define range_adjc_iterate_end range_adjc_dir_iterate_end
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#define range_adjc_dir_iterate(nmap, center_tile, range, itr_tile, dir_itr) \
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adjc_dirlist_iterate(nmap, center_tile, itr_tile, dir_itr, \
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_RANGE_DIRLIST(range, nmap), _RANGE_DIRCOUNT(range, nmap))
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#define range_adjc_dir_iterate_end adjc_dirlist_iterate_end
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#define range_adjc_dir_base_iterate(nmap, center_tile, range, dir_itr) \
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adjc_dirlist_base_iterate(nmap, center_tile, dir_itr, \
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_RANGE_DIRLIST(range, nmap), _RANGE_DIRCOUNT(range, nmap))
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#define range_adjc_dir_base_iterate_end adjc_dirlist_base_iterate_end
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/* Iterate through all tiles adjacent to a tile using the given list of
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* directions. _dir is the directional value, (center_x, center_y) is
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* the center tile (which must be normalized). The center tile is not
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* included in the iteration.
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*
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* This macro should not be used directly. Instead, use adjc_iterate,
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* cardinal_adjc_iterate, or related iterators. */
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* cardinal_adjc_iterate, range_adjc_iterate, or related iterators. */
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#define adjc_dirlist_iterate(nmap, center_tile, _tile, _dir, \
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dirlist, dircount) \
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{ \
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