piece.cpp File Reference

#include "piece.h"
#include "game.h"
#include "game_options.h"
#include "game_coordinate.h"
#include "helper.h"
#include "piece_type.h"
#include "square.h"
#include <algorithm>
#include <cassert>
#include <iterator>
#include <sstream>

Include dependency graph for piece.cpp:

Functions
bool	can_attack_on_empty_board (const chess_color color, const piece_type &type, const square &from, const square &to)
	Can a piece attack from 'from' to 'to'? This function assumes the board is empty.
bool	can_capture_on_empty_board (const chess_color color, const piece_type &p, const square &from, const square &to)
	Can a piece capture from 'from' to 'to'? This function assumes the board is empty.
bool	can_move_on_empty_board (const chess_color color, const piece_type &type, const square &from, const square &to)
	Can a piece move from 'from' to 'to'? This function assumes the board is empty.
bool	can_promote (const chess_color color, const piece_type &type, const square &s) noexcept
	Can this piece promote?
bool	can_promote (const piece &p) noexcept
	Can this piece promote?
void	clear_actions (piece &p)
	Clear all the actions.
int	count_piece_actions (const piece &p)
	Count the number of actions a piece has.
std::string	describe_actions (const piece &p)
	Describe the actions a piece have, e.g. 'idle', or 'moving to (3, 4)'.
double	get_f_health (const piece &p) noexcept
	Get the fraction of the health, where 1.0 denotes full health.
double	get_f_shield (const piece &p) noexcept
	Get the fraction of the shield, where 1.0 denotes full shields.
square	get_occupied_square (const piece &p) noexcept
	Get the square that this piece occupies now.
piece	get_test_white_king () noexcept
	Create a piece to be used in testing: a white king on e1.
piece	get_test_white_knight (const race r) noexcept
	Create a piece to be used in testing: a white knight on c3.
piece	get_test_white_pawn () noexcept
bool	has_actions (const piece &p) noexcept
	Does the piece have actions to do?
bool	has_just_double_moved (const piece &p, const in_game_time &when) noexcept
	Has this piece (i.e.
bool	has_moved (const piece &p) noexcept
	Has this piece (attempted to) move?
bool	is_dead (const piece &p) noexcept
	Is the unit dead?
bool	is_enpassantable (const piece &p, const in_game_time &when)
	Can the unit be captured by en-passant?
bool	is_idle (const piece &p) noexcept
	Is the unit idle?
bool	is_on_starting_rank (const chess_color c, const square &q) noexcept
	Is this piece (a pawn) on the starting rank?
bool	is_pawn (const piece &p) noexcept
	Is the piece a pawn?
bool	is_selected (const piece &p)
	Determine from the action history if the piece is selected.
void	test_piece ()
	Test this class and its free functions.
void	tick_attack (piece &p, const delta_t &dt, game &g)
	Process a tick, when the current action is an attack.
void	tick_attack_en_passant (piece &p, const delta_t &dt, game &g)
void	tick_castle_kingside (piece &p, const delta_t &dt, game &g)
	Process a tick, when the current action is a castling to kingside.
void	tick_castle_queenside (piece &p, const delta_t &dt, game &g)
	Process a tick, when the current action is a castling to queenside.
void	tick_move (piece &p, const delta_t &dt, game &g)
	Process a tick, when the current action is a move.
char	to_fen_char (const piece &p) noexcept
	Convert the piece to a FEN character.
bool	operator== (const piece &lhs, const piece &rhs) noexcept
bool	operator!= (const piece &lhs, const piece &rhs) noexcept
std::ostream &	operator<< (std::ostream &os, const piece &p) noexcept

Function Documentation

can_attack_on_empty_board()

bool can_attack_on_empty_board	(	const chess_color	color,
		const piece_type &	type,
		const square &	from,
		const square &	to
	)

Can a piece attack from 'from' to 'to'? This function assumes the board is empty.

can_capture_on_empty_board()

bool can_capture_on_empty_board	(	const chess_color	color,
		const piece_type &	p,
		const square &	from,
		const square &	to
	)

Can a piece capture from 'from' to 'to'? This function assumes the board is empty.

can_move_on_empty_board()

bool can_move_on_empty_board	(	const chess_color	color,
		const piece_type &	type,
		const square &	from,
		const square &	to
	)

Can a piece move from 'from' to 'to'? This function assumes the board is empty.

can_promote() [1/2]

bool can_promote ( const chess_color  color, const piece_type &  type, const square &  s  )

noexcept

Can this piece promote?

can_promote() [2/2]

bool can_promote ( const piece &  p )

noexcept

Can this piece promote?

clear_actions()

void clear_actions

(

piece &

p

)

Clear all the actions.

count_piece_actions()

int count_piece_actions

(

const piece &

p

)

Count the number of actions a piece has.

describe_actions()

std::string describe_actions

(

const piece &

p

)

Describe the actions a piece have, e.g. 'idle', or 'moving to (3, 4)'.

get_f_health()

double get_f_health ( const piece &  p )

noexcept

Get the fraction of the health, where 1.0 denotes full health.

get_f_shield()

double get_f_shield ( const piece &  p )

noexcept

Get the fraction of the shield, where 1.0 denotes full shields.

Assumes the piece is a Rooxx

get_occupied_square()

square get_occupied_square ( const piece &  p )

noexcept

Get the square that this piece occupies now.

get_test_white_king()

piece get_test_white_king ( )

noexcept

Create a piece to be used in testing: a white king on e1.

get_test_white_knight()

piece get_test_white_knight ( const race  r )

noexcept

Create a piece to be used in testing: a white knight on c3.

get_test_white_pawn()

piece get_test_white_pawn ( )

noexcept

has_actions()

bool has_actions ( const piece &  p )

noexcept

Does the piece have actions to do?

has_just_double_moved()

bool has_just_double_moved ( const piece &  p, const in_game_time &  when  )

noexcept

Has this piece (i.e.

a pawn) did a double move forward last time unit? Only pawns can do this, e.g. e2-e4 or e7-e5

has_moved()

bool has_moved ( const piece &  p )

noexcept

Has this piece (attempted to) move?

is_dead()

bool is_dead ( const piece &  p )

noexcept

Is the unit dead?

is_enpassantable()

bool is_enpassantable	(	const piece &	p,
		const in_game_time &	when
	)

Can the unit be captured by en-passant?

is_idle()

bool is_idle ( const piece &  p )

noexcept

Is the unit idle?

is_on_starting_rank()

bool is_on_starting_rank ( const chess_color  c, const square &  q  )

noexcept

Is this piece (a pawn) on the starting rank?

is_pawn()

bool is_pawn ( const piece &  p )

noexcept

Is the piece a pawn?

is_selected()

bool is_selected

(

const piece &

p

)

Determine from the action history if the piece is selected.

operator!=()

bool operator!= ( const piece &  lhs, const piece &  rhs  )

noexcept

operator<<()

std::ostream & operator<< ( std::ostream &  os, const piece &  p  )

noexcept

operator==()

bool operator== ( const piece &  lhs, const piece &  rhs  )

noexcept

test_piece()

void test_piece

(

)

Test this class and its free functions.

tick_attack()

void tick_attack	(	piece &	p,
		const delta_t &	dt,
		game &	g
	)

Process a tick, when the current action is an attack.

tick_attack_en_passant()

void tick_attack_en_passant	(	piece &	p,
		const delta_t &	dt,
		game &	g
	)

tick_castle_kingside()

void tick_castle_kingside	(	piece &	p,
		const delta_t &	dt,
		game &	g
	)

Process a tick, when the current action is a castling to kingside.

tick_castle_queenside()

void tick_castle_queenside	(	piece &	p,
		const delta_t &	dt,
		game &	g
	)

Process a tick, when the current action is a castling to queenside.

tick_move()

void tick_move	(	piece &	p,
		const delta_t &	dt,
		game &	g
	)

Process a tick, when the current action is a move.

to_fen_char()

char to_fen_char ( const piece &  p )

noexcept

Convert the piece to a FEN character.

Type	Character when white	Character when black
bishop	b	B
king	k	K
knight	n	N
pawn	p	P
queen	q	Q
rook	r	R