41 lines
1.1 KiB
C
41 lines
1.1 KiB
C
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// A puzzle_options_t is a set of possible tile values that can live somewhere
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// in the puzzle.
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//
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// It has the interface of Set<tile_t>.
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//
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// Only values '1' through '9' are representable. Trying to add any other value
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// to the set will silently fail.
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#ifndef PUZZLE_OPTIONS_H
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#define PUZZLE_OPTIONS_H
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#include <stdint.h>
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#include <stdbool.h>
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#include "tile.h"
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typedef struct {
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uint16_t bitfield;
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} puzzle_options_t;
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// Create a blank puzzle options set.
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void puzzle_options_init(puzzle_options_t* puzzle_options);
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// Add a tile to a puzzle options set.
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void puzzle_options_add(puzzle_options_t* puzzle_options, tile_t tile);
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// Remove a tile from a puzzle options set.
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bool puzzle_options_remove(puzzle_options_t* puzzle_options, tile_t tile);
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// Return true if a puzzle options set contains this tile
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bool puzzle_options_contains(puzzle_options_t* puzzle_options, tile_t tile);
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// Count the tiles in this puzzle options set.
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uint8_t puzzle_options_count(puzzle_options_t* puzzle_options);
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// Check if a puzzle options set is empty.
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//
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// Equivalent to puzzle_options_count(...) == 0.
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bool puzzle_options_is_empty(puzzle_options_t* puzzle_options);
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#endif
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