File size: 9,576 Bytes
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import chess
class BoardUI(ctk.CTkFrame):
def __init__(self, master, game_state, **kwargs):
super().__init__(master, **kwargs)
self.game_state = game_state
self.canvas = ctk.CTkCanvas(self, bg="#302E2B", highlightthickness=0)
self.canvas.pack(fill="both", expand=True)
self.square_size = 50 # Will be recalculated on resize
self.selected_square = None
self.pieces = {}
self.flipped = False # Board orientation
self.edit_mode = False
self.selected_edit_piece = None # Piece to place in edit mode (None = Delete)
self.last_analysis_moves = [] # cache for redrawing arrows
self.canvas.bind("<Button-1>", self.on_click)
self.canvas.bind("<Configure>", self.on_resize)
def on_resize(self, event):
# Calculate square size based on available space (use smaller dimension)
size = min(event.width, event.height)
self.square_size = size // 8
self.draw_board()
def get_visual_coords(self, file, rank):
"""Convert chess file/rank to visual coordinates accounting for flip."""
if self.flipped:
visual_file = 7 - file
visual_rank = rank # When flipped, rank 0 (row 1) is at top
else:
visual_file = file
visual_rank = 7 - rank # Normal: rank 7 (row 8) is at top
return visual_file, visual_rank
def get_chess_square_from_visual(self, visual_file, visual_rank):
"""Convert visual coordinates to chess square."""
if self.flipped:
file = 7 - visual_file
rank = visual_rank
else:
file = visual_file
rank = 7 - visual_rank
return chess.square(file, rank)
def draw_board(self):
self.canvas.delete("all")
colors = ["#EBECD0", "#779556"] # Light, Dark squares
# Center the board if window is not square
canvas_w = self.canvas.winfo_width()
canvas_h = self.canvas.winfo_height()
board_size = self.square_size * 8
offset_x = (canvas_w - board_size) // 2
offset_y = (canvas_h - board_size) // 2
self.offset_x = max(0, offset_x)
self.offset_y = max(0, offset_y)
for visual_rank in range(8):
for visual_file in range(8):
color = colors[(visual_rank + visual_file) % 2]
x1 = self.offset_x + visual_file * self.square_size
y1 = self.offset_y + visual_rank * self.square_size
x2 = x1 + self.square_size
y2 = y1 + self.square_size
self.canvas.create_rectangle(x1, y1, x2, y2, fill=color, outline="")
# Get chess square for this visual position
chess_square = self.get_chess_square_from_visual(visual_file, visual_rank)
piece = self.game_state.board.piece_at(chess_square)
if piece:
self.draw_piece(x1, y1, piece)
# Highlight King if in Check
if self.game_state.board.is_check():
self.highlight_king_check()
if self.selected_square is not None:
self.highlight_square(self.selected_square)
# Redraw arrows if they exist
if self.last_analysis_moves:
self.display_analysis(self.last_analysis_moves, cache=False)
def draw_piece(self, x, y, piece):
symbol = piece.unicode_symbol()
font_size = int(self.square_size * 0.7)
fill_color = "#1a1a1a" if piece.color == chess.BLACK else "#ffffff"
# Add shadow for better visibility
shadow_offset = max(1, int(self.square_size * 0.02))
self.canvas.create_text(
x + self.square_size/2 + shadow_offset,
y + self.square_size/2 + shadow_offset,
text=symbol,
font=("Segoe UI Symbol", font_size, "bold"),
fill="gray30"
)
self.canvas.create_text(
x + self.square_size/2,
y + self.square_size/2,
text=symbol,
font=("Segoe UI Symbol", font_size, "bold"),
fill=fill_color
)
def highlight_king_check(self):
"""Highlight the King's square in red if in check."""
king_square = self.game_state.board.king(self.game_state.board.turn)
if king_square is not None:
file = chess.square_file(king_square)
rank = chess.square_rank(king_square)
visual_file, visual_rank = self.get_visual_coords(file, rank)
x1 = self.offset_x + visual_file * self.square_size
y1 = self.offset_y + visual_rank * self.square_size
x2 = x1 + self.square_size
y2 = y1 + self.square_size
# Create a red glow/border
self.canvas.create_oval(x1+2, y1+2, x2-2, y2-2, outline="#FF0000", width=4, tag="check")
self.canvas.create_rectangle(x1, y1, x2, y2, fill="red", stipple="gray25", outline="")
def highlight_square(self, square):
file = chess.square_file(square)
rank = chess.square_rank(square)
visual_file, visual_rank = self.get_visual_coords(file, rank)
x1 = self.offset_x + visual_file * self.square_size
y1 = self.offset_y + visual_rank * self.square_size
x2 = x1 + self.square_size
y2 = y1 + self.square_size
self.canvas.create_rectangle(x1, y1, x2, y2, fill="yellow", stipple="gray50", outline="gold", width=2)
def on_click(self, event):
# Adjust for offset
adj_x = event.x - getattr(self, 'offset_x', 0)
adj_y = event.y - getattr(self, 'offset_y', 0)
if adj_x < 0 or adj_y < 0:
return
visual_file = int(adj_x // self.square_size)
visual_rank = int(adj_y // self.square_size)
if visual_file < 0 or visual_file > 7 or visual_rank < 0 or visual_rank > 7:
return
chess_square = self.get_chess_square_from_visual(visual_file, visual_rank)
if self.edit_mode:
# Edit Mode Logic
self.game_state.set_piece(chess_square, self.selected_edit_piece)
self.draw_board()
return
# Normal Play Logic
if self.selected_square is None:
piece = self.game_state.board.piece_at(chess_square)
if piece and piece.color == self.game_state.board.turn:
self.selected_square = chess_square
self.draw_board()
else:
# Try to move
move = chess.Move(self.selected_square, chess_square)
# Check for promotion
piece_at_start = self.game_state.board.piece_at(self.selected_square)
if piece_at_start and piece_at_start.piece_type == chess.PAWN:
if (self.game_state.board.turn == chess.WHITE and chess.square_rank(chess_square) == 7) or \
(self.game_state.board.turn == chess.BLACK and chess.square_rank(chess_square) == 0):
move = chess.Move(self.selected_square, chess_square, promotion=chess.QUEEN)
if move in self.game_state.board.legal_moves:
self.game_state.board.push(move)
self.selected_square = None
self.draw_board()
self.master.event_generate("<<MoveMade>>")
else:
piece = self.game_state.board.piece_at(chess_square)
if piece and piece.color == self.game_state.board.turn:
self.selected_square = chess_square
self.draw_board()
else:
self.selected_square = None
self.draw_board()
def draw_arrow(self, start_sq, end_sq, color="#00FF00", width=4):
# Get visual coordinates for arrow
start_file = chess.square_file(start_sq)
start_rank = chess.square_rank(start_sq)
end_file = chess.square_file(end_sq)
end_rank = chess.square_rank(end_sq)
start_vf, start_vr = self.get_visual_coords(start_file, start_rank)
end_vf, end_vr = self.get_visual_coords(end_file, end_rank)
x1 = self.offset_x + start_vf * self.square_size + self.square_size // 2
y1 = self.offset_y + start_vr * self.square_size + self.square_size // 2
x2 = self.offset_x + end_vf * self.square_size + self.square_size // 2
y2 = self.offset_y + end_vr * self.square_size + self.square_size // 2
self.canvas.create_line(x1, y1, x2, y2, fill=color, width=width, arrow="last", arrowshape=(16, 20, 6), tag="arrow")
def display_analysis(self, top_moves, cache=True):
if cache:
self.last_analysis_moves = top_moves
self.canvas.delete("arrow")
colors = ["#00FF00", "#00FFFF", "#FFFF00"]
for i, move_data in enumerate(top_moves):
if i >= len(colors):
break
move = move_data["move"]
self.draw_arrow(move.from_square, move.to_square, color=colors[i], width=6 - i)
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