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chess_lan_functions.py
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chess_lan_functions.py
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def check_movement_correctness(self, prev_pos, pos, fig, check="normal"):
opposite_player_figures_pos = [fig.position for fig in self.change_opp[self.moving].figures]
self_player_figures_pos = [fig.position for fig in self.change_right[self.moving].figures]
if prev_pos != pos and pos not in self_player_figures_pos:
if fig.name[5:] == "Pawn":
if self.moving == "white":
x = 1
else:
x = -1
if fig.already_moved == 0 and (get_position(self, prev_pos) - get_position(self, pos)) * x == -16 and \
get_position(self, get_position(self, prev_pos) + 8 * x) not in self_player_figures_pos and \
get_position(self, get_position(self, prev_pos) + 8 * x) not in opposite_player_figures_pos and \
pos not in opposite_player_figures_pos:
if check == "normal":
fig.already_moved = 1
fig.special = "enpassant_possible"
return 1
elif (get_position(self, prev_pos) - get_position(self, pos)) * x == -8 and pos not in \
opposite_player_figures_pos:
if pos[1] != "1" and pos[1] != "8":
if check == "normal":
fig.already_moved = 1
return 1
else:
return 2 # got to last line
else:
if ((get_position(self, prev_pos) - get_position(self, pos)) * x == -9 or
(get_position(self, prev_pos) - get_position(self, pos)) * x == -7) and \
pos in opposite_player_figures_pos:
if pos[1] != "1" and pos[1] != "8":
return 1
else:
return 2 # got to last line
elif ((get_position(self, prev_pos) - get_position(self, pos)) * x == -9 or
(get_position(self, prev_pos) - get_position(self, pos)) * x == -7) and \
pos not in opposite_player_figures_pos:
if get_position(self, pos) - 8 * x in [get_position(self, f.position) for f in self.change_opp[self.moving].figures]:
for opp_fig in self.change_opp[self.moving].figures:
if get_position(self, pos) - 8 * x == get_position(self, opp_fig.position) and \
opp_fig.name[5:] == "Pawn" and opp_fig.special == "enpassant_possible":
return "4" + get_position(self, get_position(self, pos) - 8 * x) # en passant => 4 + passed pawn position
elif fig.name[5:] == "Knight":
prev_position_x = int(get_position(self, prev_pos, "line_column")[1]) * self.field_width
prev_position_y = int(get_position(self, prev_pos, "line_column")[0]) * self.field_width
dest_x = int(get_position(self, pos, "line_column")[1]) * self.field_width
dest_y = int(get_position(self, pos, "line_column")[0]) * self.field_width
if get_position(self, prev_pos) - get_position(self, pos) in [6, 10, 15, 17, -6, -10, -15, -17] and\
prev_position_x - 3 * self.field_width <= dest_x <= prev_position_x + 3 * self.field_width and \
prev_position_y - 3 * self.field_width <= dest_y <= prev_position_y + 3 * self.field_width:
return 1
elif fig.name[5:] == "King":
if get_position(self, prev_pos) - get_position(self, pos) in [1, 7, 8, 9, -1, -7, -8, -9] and \
abs(self.lett_to_num[fig.position[0]] - self.lett_to_num[pos[0]]) < 2:
if fig.already_moved == 0:
if check == "normal":
fig.already_moved = 1
return 1
# casling start #
ch = 0
for self_fig in [f for f in self.change_right[self.moving].figures]:
if get_position(self, self_fig.position) == get_position(self, fig.position) - 1:
ch = 1
if get_position(self, prev_pos) - get_position(self, pos) == 2 and fig.already_moved == 0 and \
detect_check(self, "self") == 0 and ch == 0:
fig.position = get_position(self, get_position(self, fig.position) - 1)
if detect_check(self, "self") == 0:
fig.position = get_position(self, get_position(self, fig.position) - 1)
if detect_check(self, "self") == 0:
fig.position = prev_pos
for f in self.change_right[self.moving].figures:
if f.name[5:] == "Rook" and f.special == "LeftRook" and f.already_moved == 0:
return 3.0 # castling left (.0)
else:
fig.position = prev_pos
return 0
else:
fig.position = prev_pos
return 0
ch = 0
for self_fig in [f for f in self.change_right[self.moving].figures]:
if get_position(self, self_fig.position) == get_position(self, fig.position) + 1:
ch = 1
if get_position(self, prev_pos) - get_position(self, pos) == -2 and fig.already_moved == 0 and \
detect_check(self, "self") == 0 and ch == 0:
fig.position = get_position(self, get_position(self, fig.position) + 1)
if detect_check(self, "self") == 0:
fig.position = get_position(self, get_position(self, fig.position) + 1)
if detect_check(self, "self") == 0:
fig.position = prev_pos
for f in self.change_right[self.moving].figures:
if f.name[5:] == "Rook" and f.special == "RightRook" and f.already_moved == 0:
return 3.5 # castling right (.5)
else:
fig.position = prev_pos
return 0
else:
fig.position = prev_pos
return 0
# castling end #
elif fig.name[5:] == "Bishop":
ch = 0
if self.lett_to_num[prev_pos[0]] < self.lett_to_num[pos[0]]:
hor_k = 1
else:
hor_k = -1
if int(prev_pos[1]) < int(pos[1]):
ver_k = 1
else:
ver_k = -1
currant_pos = prev_pos
while currant_pos != pos:
try:
currant_pos = str(self.num_to_lett[self.lett_to_num[currant_pos[0]] + hor_k]) + str(int(currant_pos[1]) + ver_k)
except:
ch = 1
break
if currant_pos in self_player_figures_pos or (currant_pos in opposite_player_figures_pos and currant_pos != pos):
ch = 1
break
if ch == 0:
return 1
elif fig.name[5:] == "Rook":
ch = 0
if pos[0] in prev_pos or pos[1] in prev_pos:
if self.lett_to_num[prev_pos[0]] < self.lett_to_num[pos[0]]:
hor_k = 1
elif self.lett_to_num[prev_pos[0]] > self.lett_to_num[pos[0]]:
hor_k = -1
else:
hor_k = 0
if int(prev_pos[1]) < int(pos[1]):
ver_k = 1
elif int(prev_pos[1]) > int(pos[1]):
ver_k = -1
else:
ver_k = 0
currant_pos = prev_pos
while currant_pos != pos:
currant_pos = str(self.num_to_lett[self.lett_to_num[currant_pos[0]] + hor_k]) + str(int(currant_pos[1]) + ver_k)
if currant_pos in self_player_figures_pos or (currant_pos in opposite_player_figures_pos and currant_pos != pos):
ch = 1
break
if ch == 0:
return 1
else:
return 0
else:
return 0
elif fig.name[5:] == "Queen":
ch = 0
if pos[0] in prev_pos or pos[1] in prev_pos:
if self.lett_to_num[prev_pos[0]] < self.lett_to_num[pos[0]]:
hor_k = 1
elif self.lett_to_num[prev_pos[0]] > self.lett_to_num[pos[0]]:
hor_k = -1
else:
hor_k = 0
if int(prev_pos[1]) < int(pos[1]):
ver_k = 1
elif int(prev_pos[1]) > int(pos[1]):
ver_k = -1
else:
ver_k = 0
currant_pos = prev_pos
while currant_pos != pos:
currant_pos = str(self.num_to_lett[self.lett_to_num[currant_pos[0]] + hor_k]) + str(
int(currant_pos[1]) + ver_k)
if currant_pos in self_player_figures_pos or (
currant_pos in opposite_player_figures_pos and currant_pos != pos):
ch = 1
break
if ch == 0:
return 1
else:
return 0
else:
if self.lett_to_num[prev_pos[0]] < self.lett_to_num[pos[0]]:
hor_k = 1
else:
hor_k = -1
if int(prev_pos[1]) < int(pos[1]):
ver_k = 1
else:
ver_k = -1
currant_pos = prev_pos
while currant_pos != pos:
try:
currant_pos = str(self.num_to_lett[self.lett_to_num[currant_pos[0]] + hor_k]) + str(
int(currant_pos[1]) + ver_k)
except:
ch = 1
break
if currant_pos in self_player_figures_pos or (
currant_pos in opposite_player_figures_pos and currant_pos != pos):
ch = 1
break
if ch == 0:
return 1
return 0
def get_position(self, input, tp="normal"):
if tp == "line_column":
if type(input).__name__ == "int":
if input >= 8:
t = 8
if input % 8 == 0:
t = 0
line = int((input + t - input % 8) / 8)
column = int(self.lett_to_num[get_position(self, input, "normal")[0]])
return [line, column]
else:
column = int(self.lett_to_num[get_position(self, input, "normal")[0]])
return [1, column]
else:
return get_position(self, get_position(self, input, "normal"), "line_column")
else:
if type(input).__name__ == "int":
if input >= 8:
t = 8
if input % 8 == 0:
t = 0
line = int((input + t - input % 8) / 8)
if t == 0:
letter = "H"
else:
letter = self.num_to_lett[input % 8]
return letter + str(line)
else:
if input == 0:
return "H1"
else:
return self.num_to_lett[input] + "1"
else:
return self.lett_to_num[input[0].upper()] + (int(input[1]) - 1) * 8
def detect_check(self, who, b="f"):
got_check = 0
if who == "self":
got_check = self.moving
elif who == "opp":
if self.moving == "white":
got_check = "black"
else:
got_check = "white"
checking_player_figures = [fig for fig in self.change_opp[got_check].figures]
not_checking_player_figures = [fig for fig in self.change_right[got_check].figures]
str_king_position = self.change_right[got_check].figures[self.change_right[got_check].king_number].position
for fig in checking_player_figures:
if fig.name[5:] == "Pawn":
if got_check == "white":
x = 1
else:
x = -1
if (get_position(self, str_king_position) + x * 8 + 1 == get_position(self, fig.position) or
get_position(self, str_king_position) + x * 8 - 1 == get_position(self, fig.position)) and\
abs(self.lett_to_num[str_king_position[0]] - self.lett_to_num[fig.position[0]]) != 7:
if b == "g":
print(fig.name, "on", fig.position, "checked", got_check, "king on", str_king_position)
return 1
elif fig.name[5:] == "Knight":
for p in [6, 10, 15, 17, -6, -10, -15, -17]:
prev_position_x = int(get_position(self, fig.position, "line_column")[0]) * self.field_width
prev_position_y = int(get_position(self, fig.position, "line_column")[1]) * self.field_width
if get_position(self, fig.position) + p >= 0:
dest_x = int(get_position(self, get_position(self, fig.position) + p, "line_column")[0]) * self.field_width
dest_y = int(get_position(self, get_position(self, fig.position) + p, "line_column")[1]) * self.field_width
if get_position(self, str_king_position) == get_position(self, fig.position) + p and \
get_position(self, fig.position) - get_position(self, fig.position) + p in [6, 10, 15, 17, -6, -10, -15, -17] and \
prev_position_x - 5 * self.field_width <= dest_x < prev_position_x + 5 * self.field_width and \
prev_position_y - 5 * self.field_width <= dest_y < prev_position_y + 5 * self.field_width:
if b == "g":
print(fig.name, "on", fig.position, "checked", got_check, "king on", str_king_position)
return 1
elif fig.name[5:] == "Bishop":
for direction in [[1, 1], [1, -1], [-1, -1], [-1, 1]]:
currant_pos = fig.position
while currant_pos != str_king_position:
try:
if self.lett_to_num[currant_pos[0]] + direction[0] != 0 and int(currant_pos[1]) + direction[1] != 0:
if len(currant_pos) != 3 and currant_pos[1] != 9:
currant_pos = str(self.num_to_lett[self.lett_to_num[currant_pos[0]] + direction[0]]) + str(int(currant_pos[1]) + direction[1])
else:
break
else:
break
except:
break
if currant_pos in [f.position for f in checking_player_figures] or (currant_pos in [f.position for f in not_checking_player_figures] and
currant_pos != str_king_position):
break
if currant_pos == str_king_position:
if b == "g":
print(fig.name, "on", fig.position, "checked", got_check, "king on", str_king_position)
return 1
elif fig.name[5:] == "Rook":
for direction in [[1, 0], [0, -1], [-1, 0], [0, 1]]:
currant_pos = fig.position
if str_king_position[0] in fig.position or str_king_position[1] in fig.position:
while currant_pos != str_king_position:
try:
if self.lett_to_num[currant_pos[0]] + direction[0] != 0 and int(currant_pos[1]) + direction[1] != 0:
currant_pos = str(self.num_to_lett[self.lett_to_num[currant_pos[0]] + direction[0]]) + str(int(currant_pos[1]) + direction[1])
else:
break
except:
break
if currant_pos in [f.position for f in checking_player_figures] or (currant_pos in [f.position for f in not_checking_player_figures] and currant_pos != str_king_position):
break
if currant_pos == str_king_position:
if b == "g":
print(fig.name, "on", fig.position, "checked", got_check, "king on", str_king_position)
return 1
elif fig.name[5:] == "Queen":
for direction in [[1, 0], [0, -1], [-1, 0], [0, 1]]:
currant_pos = fig.position
if str_king_position[0] in fig.position or str_king_position[1] in fig.position:
while currant_pos != str_king_position:
try:
if self.lett_to_num[currant_pos[0]] + direction[0] != 0 and int(currant_pos[1]) + direction[1] != 0:
currant_pos = str(self.num_to_lett[self.lett_to_num[currant_pos[0]] + direction[0]]) + str(int(currant_pos[1]) + direction[1])
if len(currant_pos) == 3 or currant_pos[1] == 9:
break
else:
break
except:
break
if currant_pos in [f.position for f in checking_player_figures] or (currant_pos in [f.position for f in not_checking_player_figures] and currant_pos != str_king_position):
break
if currant_pos == str_king_position:
if b == "g":
print(fig.name, "on", fig.position, "checked 1", got_check, "king on", str_king_position)
return 1
for direction in [[1, 1], [1, -1], [-1, -1], [-1, 1]]:
currant_pos = fig.position
while currant_pos != str_king_position:
try:
if self.lett_to_num[currant_pos[0]] + direction[0] != 0 and int(currant_pos[1]) + direction[1] != 0:
currant_pos = str(self.num_to_lett[self.lett_to_num[currant_pos[0]] + direction[0]]) + str(int(currant_pos[1]) + direction[1])
if len(currant_pos) == 3 or currant_pos[1] == 9:
break
else:
break
except:
break
if currant_pos in [f.position for f in checking_player_figures] or (currant_pos in [f.position for f in not_checking_player_figures] and
currant_pos != str_king_position):
break
if currant_pos == str_king_position:
if b == "g":
print(fig.name, "on", fig.position, "checked 2", got_check, "king on", str_king_position)
return 1
elif fig.name[5:] == "King":
for direction in [7, 8, 9, -1, 1, -7, -8, -9]:
if get_position(self, str_king_position) == get_position(self, fig.position) + direction and \
abs(self.lett_to_num[str_king_position[0]] - self.lett_to_num[fig.position[0]]) < 2:
if b == "g":
print(fig.name, "on", fig.position, "checked", got_check, "king on", str_king_position)
return 1
return 0
def get_possible_moves(self, fig):
possible_moves = []
thrown_out = 0
thrown_figures = []
for count, field in enumerate(self.fields):
event = check_movement_correctness(self, fig.position, get_position(self, count), fig, "find")
if event in [1, 2, 3.0, 3.5] or (type(event).__name__ != "int" and type(event).__name__ != "float" and "4" in event):
buff_fig_pos = fig.position
fig.position = get_position(self, count)
for count1, opp_fig in enumerate(self.change_opp[fig.color].figures):
if fig.position == opp_fig.position and opp_fig.name[5:] != "King":
thrown_out = 1
thrown_figures.append(opp_fig)
if count1 < self.change_opp[self.moving].king_number:
self.change_opp[self.moving].king_number -= 1
print("kicked", self.change_opp[self.moving].figures[count1].name, "on", opp_fig.position)
self.change_opp[self.moving].figures.pop(count1)
if detect_check(self, "self") == 0:
possible_moves.append(get_position(self, count))
if thrown_out == 1:
for op_fig in thrown_figures:
self.change_opp[self.moving].figures.append(op_fig)
thrown_figures = []
thrown_out = 0
fig.position = buff_fig_pos
return possible_moves
def detect_check_mate(self, who):
if detect_check(self, who) == 1:
got_check = ""
if who == "self":
got_check = self.moving.color
elif who == "opp":
if self.moving == "white":
got_check = "black"
else:
got_check = "white"
not_checking_player_figures = [fig for fig in self.change_right[got_check].figures]
moving = self.moving
self.moving = got_check
for fig in not_checking_player_figures:
moves = get_possible_moves(self, fig)
if len(moves) > 0:
self.moving = moving
return 0
self.moving = moving
return 1
def detect_draw(self, who):
got_draw = ""
if who == "self":
got_draw = self.moving.color
elif who == "opp":
if self.moving == "white":
got_draw = "black"
else:
got_draw = "white"
got_draw_player_figures = [fig for fig in self.change_right[got_draw].figures]
moving = self.moving
self.moving = got_draw
all_moves = 0
for fig in got_draw_player_figures:
all_moves += len(get_possible_moves(self, fig))
if all_moves > 0:
self.moving = moving
return 0
self.moving = moving
return 1