package main

type ship struct {
	name     string
	shape    uint64
	board    *board
	owner    *client
	x        uint8
	y        uint8
	rotation uint8
}

func (ship *ship) nextSquare() bool {
	var target uint8 = 8
	if ship.rotation%2 == 0 {
		target = 0
		if ship.x == 0 && ship.y == 0 {
			ship.x = 8
			ship.y = 8
		}
	}
	if ship.y == target {
		return true //stop
	}
	if ship.x == target {
		ship.x = 0
	}
	return false
}

func (ship *ship) placeShip() {
	var row uint8 = 0
	var col uint8 = 0
	for {
		// Calculate the bit position (0 to 63)
		bitPos := (7-row)*8 + (7 - col)
		// Extract the bit value
		bit := (ship.shape>>bitPos)&1 == 1
		if bit {
			square := &ship.board.matrix[row][col]
			square.ship = ship
			square.status = 2
		}
		if ship.nextSquare() {
			break
		}
	}
}

func (ship *ship) removeShip() {
	var row uint8 = 0
	var col uint8 = 0
	for {
		bitPos := (7-row)*8 + (7 - col)
		bit := (ship.shape>>bitPos)&1 == 1
		if bit {
			square := &ship.board.matrix[row][col]
			if square.status == 2 {
				square.status = 0
				square.ship = nil
			}
		}
		if ship.nextSquare() {
			break
		}
	}
}

func newShip(name string, shape uint64, rotation uint8, owner *client) *ship {
	this := new(ship)
	this.name = name
	this.shape = shape
	this.owner = owner
	this.board = owner.board
	this.rotation = rotation
	this.placeShip()
	return this
}