// Package cell represents a single cell in a maze grid.
package cell

import (
	"code.chimeric.al/dwrz/minotaur/pkg/maze/direction"
)

// Cell is a bitmask of open passages from a cell to its neighbors.
// Bit d (1 << d) is 1 when the passage in direction d is open, and 0 when a
// wall blocks that direction.
type Cell uint8

// HasDirection reports whether the passage in direction d is open.
func (c Cell) HasDirection(d direction.Direction) bool {
	return c&(1<<d) != 0
}

// SetDirection opens the passage in direction d.
func (c *Cell) SetDirection(d direction.Direction) {
	*c |= 1 << d
}