1081 lines
38 KiB
GDScript
1081 lines
38 KiB
GDScript
extends Node
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export (PackedScene) var piece_scene
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export (PackedScene) var movetile_scene
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var board = new_board()
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var board_cell = 128
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const BOARD_WIDTH = 7 # starting at 0..7
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const BOARD_HEIGHT = 7
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var history = []
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var team1_capture = new_board()
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var team2_capture = new_board()
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var game_over = false
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var movement_layer = false
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var movement_layer_piece = null
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var en_passant_pawn = null
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var en_passant_wait = 0 # how many times any piece on the board must move before en_passant_pawn gets set to null
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var team1_king = null
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var team2_king = null
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# hack to prevent 'clicking' on a killed piece
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var safely_handle_movement = false
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var turn = 0
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var team1 = 1
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var team2 = 2
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func _ready():
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make_player1("green")
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#make_player2("red")
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#checkmatet1()
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#checkmatet2()
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#spawn_piece("pawn", "teal", 2, 6, team1)
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#spawn_piece("pawn", "teal", 2, 1, team1)
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#spawn_piece("knight", "teal", 4, 6, team1)
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#spawn_piece("knight", "teal", 5, 4, team1)
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#spawn_piece("rook", "teal", 7, 6, team1)
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#spawn_piece("queen", "red", 3, 5, team2)
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#spawn_piece("pawn", "red", 7, 1, team2)
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var captures = update_capture_tables(board_to_text_board(board))
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team1_capture = captures[0]
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team2_capture = captures[1]
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save_turn()
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OS.set_window_size(Vector2(700,700))
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randomize()
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#OS.set_window_always_on_top(true)
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func checkmatet1():
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team1_king = spawn_piece('king', 'orange', 4, 7, team1)
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spawn_piece('bishop', 'orange', 3, 7, team1)
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spawn_piece('pawn', 'orange', 5, 6, team1)
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spawn_piece('pawn', 'orange', 3, 6, team1)
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spawn_piece('pawn', 'orange', 4, 6, team1)
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spawn_piece('rook', 'teal', 7, 3, team2)
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func checkmatet2():
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team2_king = spawn_piece('king', 'teal', 4, 0, team2)
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spawn_piece('bishop', 'teal', 3, 0, team2)
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spawn_piece('pawn', 'teal', 5, 1, team2)
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spawn_piece('pawn', 'teal', 3, 1, team2)
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spawn_piece('pawn', 'teal', 4, 1, team2)
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spawn_piece('rook', 'orange', 7, 2, team1)
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func _process(_delta):
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safely_handle_movement = false
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if Input.is_action_just_pressed("mouse2"):
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if click_spot() == Vector2(0,0):
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print(history)
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if click_spot() == Vector2(1,0):
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print("Queuing for team2...")
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ai_move(team2, board_to_text_board(board), ai_modes.points, 1)
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if click_spot() == Vector2(1,1):
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print("Killing pawn: %s" % [evaluate_move([3,5], [2,6], board_to_text_board(board), team2, 1)])
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print("Killing knight: %s" % [evaluate_move([3,5], [4,6], board_to_text_board(board), team2, 1)])
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print("Going to (3,1): %s" % [evaluate_move([3,5], [3,1], board_to_text_board(board), team2, 1)])
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print("Going to (3,4) (enemy controlled): %s" % [evaluate_move([3,5], [3,4], board_to_text_board(board), team2, 1)])
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if click_spot() == Vector2(1,2):
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#print(team2_every_legal_move(board_to_text_board(board)))
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print("Queuing for team1...")
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ai_move(team1, board_to_text_board(board), ai_modes.points, 1)
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#print("Killing queen: %s" % evaluate_move([2,6], [3,5], board_to_text_board(board), team1, 1))
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if click_spot() == Vector2(4,0):
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color_tiles(team2_capture, "red")
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if click_spot() == Vector2(5,0):
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color_tiles(team1_capture, "green")
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if click_spot() == Vector2(7,0):
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ai_move(team2, board_to_text_board(board))
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if click_spot() == Vector2(7,1):
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ai_move(team1, board_to_text_board(board))
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if click_spot() == Vector2(6,0):
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ai_move(team2, board_to_text_board(board), ai_modes.weighted_random)
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if click_spot() == Vector2(6,1):
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ai_move(team1, board_to_text_board(board), ai_modes.weighted_random)
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enum ai_modes {
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purely_random,
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weighted_random,
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points,
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}
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var ai_weights = {
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pawn = 10,
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knight = 30,
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bishop = 30,
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rook = 50,
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queen = 500,
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king = 1000,
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}
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func ai_move(team, text_board, ai_mode=ai_modes.purely_random, depth=1):
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var legal_every_move = team_every_legal_move(text_board, team)
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var the_move
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if ai_mode == ai_modes.purely_random:
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the_move = ai_random_move(team, text_board, legal_every_move)
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elif ai_mode == ai_modes.weighted_random:
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the_move = ai_weighted_random(team, text_board, legal_every_move)
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elif ai_mode == ai_modes.points:
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the_move = ai_points_system(team, legal_every_move, text_board, depth)
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#print(the_move)
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if the_move:
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if the_move[1]:
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ai_make_move(the_move[1], the_move[2])
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new_turn()
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func ai_points_system(team, legal_moves, text_board, depth=2):
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var best = [-INF, null]
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var alpha = -INF
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var beta = -INF
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legal_moves.shuffle()
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for every_moves in legal_moves:
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var piece = every_moves[0]
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var moves = every_moves[1]
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for move in moves:
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var eval = evaluate_move(piece, move, text_board, team, depth)
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#var eval = eval_move2(piece, move, text_board, team, depth)
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if eval > best[0]:
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best = [eval, piece, move]
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print("This move is worth: %s" % best[0])
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return best
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func evaluate_move(piece, move, text_board, team, depth, add_points=false):
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var p_board = generate_points_board(team, text_board)
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var points = p_board[move[0]][move[1]]
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if depth == 0 or depth <= 0:
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return points
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# evaluate opposing team now
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var eval_board
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eval_board = ai_text_board_move(text_board.duplicate(true), piece, move)
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var legal_moves
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if team == team1:
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legal_moves = team_every_legal_move(eval_board, team2)
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else: # team2
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legal_moves = team_every_legal_move(eval_board, team1)
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var highest_opposing_points = 0
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for every_moves in legal_moves:
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var this_piece = every_moves[0]
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for this_move in every_moves[1]:
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var eval
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if team == team1:
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eval = evaluate_move(this_piece, this_move, eval_board.duplicate(true), team2, depth-1, !add_points)
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else: # team2
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eval = evaluate_move(this_piece, this_move, eval_board.duplicate(true), team1, depth-1, !add_points)
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if eval > highest_opposing_points:
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#rint("Piece at (%s) moves to (%s), gaining %s points" % [this_piece, this_move, eval])
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highest_opposing_points = eval
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if add_points:
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points += highest_opposing_points
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else:
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points -= highest_opposing_points
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return points
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func ai_text_board_move(text_board, piece, move):
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var new_board = text_board.duplicate(true)
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var pos = new_board[piece[0]][piece[1]]
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pos[text_board_ele.has_moved] = true
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new_board[move[0]][move[1]] = pos
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new_board[piece[0]][piece[1]] = 0
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if move.size() == 3:
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#rint(new_board[move[0]][move[1] - 1])
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if move[2] == movement_condition.en_passant_kill:
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if move[1] + 1 < 8 and new_board[move[0]][move[1] + 1] is Array and new_board[move[0]][move[1] + 1][text_board_ele.en_passant]:
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new_board[ move[0] ][(move[1] + 1)] = 0
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elif move[1] - 1 > 0 and new_board[move[0]][(move[1] - 1)] is Array and new_board[move[0]][move[1] - 1][text_board_ele.en_passant]:
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new_board [move[0] ][(move[1] - 1)] = 0
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elif move[2] == movement_condition.king_side_castling:
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# TODO hard coding rook positions like this seems bad
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var rook = new_board[7][pos[1]]
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new_board[5][pos[1]] = rook
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new_board[7][pos[1]] = 0
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elif move[2] == movement_condition.queen_side_castling:
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# TODO hard coding rook positions like this seems bad
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var rook = new_board[0][pos[1]]
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new_board[3][pos[1]] = rook
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new_board[0][pos[1]] = 0
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return new_board
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func ai_make_move(piece, move):
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#rint(piece)
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#rint(move)
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var pos = position_to_board_cell(Vector2(piece[0] * board_cell, piece[1] * board_cell))
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var board_piece = board[pos[0]][pos[1]]
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board_piece.position = in_square(Vector2(move[0] * board_cell, move[1] * board_cell))
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if board[move[0]][move[1]]:
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board[move[0]][move[1]].kill()
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board[move[0]][move[1]] = board_piece
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board[move[0]][move[1]].has_moved = true
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board[pos[0]][pos[1]] = 0
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if move.size() == 3:
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if move[2] == movement_condition.en_passant_kill:
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kill_en_passant_pawn([move[0], move[1]])
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elif move[2] == movement_condition.king_side_castling:
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# TODO hard coding rook positions like this seems bad
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var rook = board[7][pos[1]]
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rook.position = in_square(Vector2(5 * board_cell, pos[1] * board_cell))
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board[5][pos[1]] = board[7][pos[1]]
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board[7][pos[1]] = 0
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elif move[2] == movement_condition.queen_side_castling:
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# TODO hard coding rook positions like this seems bad
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var rook = board[0][pos[1]]
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rook.position = in_square(Vector2(3 * board_cell, pos[1] * board_cell))
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board[3][pos[1]] = board[0][pos[1]]
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board[0][pos[1]] = 0
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func ai_random_move(team, text_board, legal_every_move):
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legal_every_move.shuffle()
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while 1:
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var piece_and_moves = legal_every_move.pop_back()
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if ! piece_and_moves:
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if ! legal_every_move:
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break # AI literally cannot move this turn, game should be offically over before this occurs
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var piece = piece_and_moves[0]
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var moves = piece_and_moves[1]
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if moves:
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#rint(moves)
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moves.shuffle()
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var move = moves.pop_back()
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#rint( ai_text_board_move(board_to_text_board(board), piece, move) )
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#ai_make_move(piece, move)
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var p_board = generate_points_board(team, text_board)
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return [p_board[move[0]][move[1]], piece, move]
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else:
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continue
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func get_moves_with_points(p_board, legal_every_move):
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var saved_moves = []
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for every_move in legal_every_move:
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var piece = every_move[0]
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var moves = every_move[1]
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if moves:
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for move in moves:
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if p_board[move[0]][move[1]] is Array:
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# en passant 'move' specifically does array
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if piece[2] == piece_names.pawn:
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saved_moves.append([p_board[move[0]][move[1]], piece, move])
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elif p_board[move[0]][move[1]] > 0:
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saved_moves.append([p_board[move[0]][move[1]], piece, move])
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else:
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continue
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return saved_moves
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func ai_weighted_random(team, text_board, legal_every_move, dict = {"no_shuffle":false, "skip_amount":0}):
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# generate a board with 'points' on it.
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# if move[x],move[y] corrispond over some points keep the move in memory. then, sort move by smallest to greatest points
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# pop_back() to get 'best move'. if there are no moves, just do random movement.
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var p_board = generate_points_board(team, text_board)
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var saved_moves = get_moves_with_points(p_board, legal_every_move)
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if saved_moves.size() > 0:
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if ! dict.get("no_shuffle"):
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saved_moves.shuffle()
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#rint(saved_moves)
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saved_moves.sort_custom(self, "sort_ascending") # sort, by smallest to greatest, then pop_back()
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print(saved_moves)
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var the_move
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the_move = saved_moves.pop_back()
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for i in dict.get("skip_amount"):
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the_move = saved_moves.pop_back()
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#ai_make_move(the_move[1], the_move[2])
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return the_move
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else:
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return ai_random_move(team, text_board, legal_every_move)
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func sort_ascending(a, b):
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if a[0] < b[0]:
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return true
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return false
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func generate_points_board(team, text_board):
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var p_board = new_board()
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for i in 8:
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for k in 8:
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var piece = text_board[i][k]
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if piece:
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match piece[text_board_ele.piece_enum]:
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piece_names.pawn:
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if piece[text_board_ele.team] == team: # our pawn
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p_board[i][k] = -1 * ai_weights.pawn
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if piece[text_board_ele.en_passant]:
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print("this teams (%s) pawn is en passant, on our team" % piece[text_board_ele.team])
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pass
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else: # their pawn
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p_board[i][k] = ai_weights.pawn
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if piece[text_board_ele.en_passant]:
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print("this teams (%s) pawn is en passant, on enemy team" % piece[text_board_ele.team])
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if team == team1: # they'll be team2 here
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p_board[i][(k - 1)] = [ai_weights.pawn, true]
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else: # they'll be team1 here
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# team1 pawn goes 'up' -1 or -2 each movement, so the space behind it will be +1
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p_board[i][(k + 1)] = [ai_weights.pawn, true]
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piece_names.rook:
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if piece[text_board_ele.team] == team:
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p_board[i][k] = -1 * ai_weights.rook
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else:
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p_board[i][k] = ai_weights.rook
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piece_names.knight:
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if piece[text_board_ele.team] == team:
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p_board[i][k] = -1 * ai_weights.knight
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else:
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p_board[i][k] = ai_weights.knight
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piece_names.bishop:
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if piece[text_board_ele.team] == team:
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p_board[i][k] = -1 * ai_weights.bishop
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else:
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p_board[i][k] = ai_weights.bishop
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piece_names.queen:
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if piece[text_board_ele.team] == team:
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p_board[i][k] = -1 * ai_weights.queen
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else:
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p_board[i][k] = ai_weights.queen
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piece_names.king:
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if piece[text_board_ele.team] == team:
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p_board[i][k] = -1 * ai_weights.king
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else:
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p_board[i][k] = ai_weights.king
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else:
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if ! p_board[i][k]: # don't clobber en passant points
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p_board[i][k] = 0
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return p_board
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func new_turn():
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check_for_promotion()
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var text_board = board_to_text_board(board)
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var captures = update_capture_tables(text_board)
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team1_capture = captures[0]
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team2_capture = captures[1]
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#print(captures)
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is_king_team1_checked(text_board, true, team2_capture)
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is_king_team2_checked(text_board, true, team1_capture)
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turn += 1
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print("Turn: %s" % turn)
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save_turn()
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print("-------------------")
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func save_turn():
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var text_board = board_to_text_board(board)
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history.append(text_board)
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enum piece_names {
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pawn,
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rook,
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knight,
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bishop,
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king,
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queen
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}
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enum text_board_ele {
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piece_enum,
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team,
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en_passant,
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has_moved,
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in_check
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}
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func board_to_text_board(boarde):
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var text_board = new_board()
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for i in 8:
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for k in 8:
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if boarde[i][k] is Object:
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var curr_piece = boarde[i][k]
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var piece_name = curr_piece.get_piece()
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var piece_enum = piece_names.get(piece_name)
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var team = curr_piece.get_team()
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var has_moved = curr_piece.has_moved
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var in_check = curr_piece.in_check
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var en_passant = null
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if curr_piece == en_passant_pawn: en_passant = 1
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#var color = curr_piece.get_piece_color_by_region()
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text_board[i][k] = [piece_enum, team, en_passant, has_moved, in_check]
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else:
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text_board[i][k] = 0
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return text_board
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enum movement_condition {
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not_attacking,
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must_attack,
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en_passant_kill,
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king_side_castling,
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queen_side_castling,
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}
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func update_capture_tables(text_board, setting=tile_setting.hide_tiles_and_cover_allies):
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var t1_capture = new_board()
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var t2_capture = new_board()
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var pieces = get_pieces(text_board)
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for e in pieces:
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var coords = e[chess_enum.pos]
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if e[chess_enum.team] == team1:
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t1_capture[coords[0]][coords[1]] = 2
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else: # team2
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t2_capture[coords[0]][coords[1]] = 2
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for e in pieces:
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var coords = e[chess_enum.pos]
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var pattern = get_move_pattern(e, coords)
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var captured = can_chess_move(pattern, coords, text_board, setting)
|
|
if e[chess_enum.team] == team1:
|
|
for c in captured:
|
|
if c.size() == 3:
|
|
if c[2] == movement_condition.not_attacking:
|
|
continue
|
|
t1_capture[c[0]][c[1]] = 1
|
|
else: # team2
|
|
for c in captured:
|
|
if c.size() == 3:
|
|
if c[2] == movement_condition.not_attacking:
|
|
continue
|
|
t2_capture[c[0]][c[1]] = 1
|
|
#print(team1_capture)
|
|
#print(team2_capture)
|
|
#color_tiles(t2_capture, "red")
|
|
#color_tiles(t1_capture, "green")
|
|
return [t1_capture, t2_capture]
|
|
|
|
func color_tiles(capture, color):
|
|
for i in 8:
|
|
for k in 8:
|
|
if capture[i][k] == 1:
|
|
var move_tile = movetile_scene.instance()
|
|
add_child(move_tile)
|
|
move_tile.set_color(color)
|
|
move_tile.position = in_square(Vector2(i * board_cell, k * board_cell))
|
|
|
|
func check_for_promotion():
|
|
var pieces = get_tree().get_nodes_in_group("piece")
|
|
for e in pieces:
|
|
if e.get_piece() == "pawn":
|
|
var y = position_to_board_cell(e.position)[1]
|
|
if y == 0 or y == 7:
|
|
print("pawn is elligable for promotion")
|
|
# TODO: player option
|
|
e.set_piece("queen", e.get_piece_color_by_region())
|
|
|
|
func is_king_team2_checked(text_board, enumerate=true, capture_table=[]):
|
|
if team2_king:
|
|
for i in 8:
|
|
for k in 8:
|
|
if text_board[i][k] and text_board[i][k][chess_enum.piece_enum] == piece_names["king"] and text_board[i][k][chess_enum.team] == team2:
|
|
if capture_table[i][k] >= 1:
|
|
if enumerate:
|
|
print("Aye, team2 in check.")
|
|
team2_king.in_check = true
|
|
if enumerate_checkmate(text_board, 2):
|
|
print("Game over: Checkmate! Team 1 wins!")
|
|
game_over = true
|
|
return true
|
|
else:
|
|
team2_king.in_check = false
|
|
return false
|
|
|
|
func is_king_team1_checked(text_board, enumerate=true, capture_table=[]):
|
|
if team1_king:
|
|
for i in 8:
|
|
for k in 8:
|
|
if text_board[i][k] and text_board[i][k][chess_enum.piece_enum] == piece_names["king"] and text_board[i][k][chess_enum.team] == team1:
|
|
if capture_table[i][k] >= 1:
|
|
if enumerate:
|
|
print("Aye, team1 in check.")
|
|
team1_king.in_check = true
|
|
if enumerate_checkmate(text_board, 1):
|
|
print("Game over: Checkmate! Team 2 wins!")
|
|
game_over = true
|
|
return true
|
|
else:
|
|
team1_king.in_check = false
|
|
return false
|
|
|
|
func enumerate_checkmate(text_board, which_king=1):
|
|
var checkmate = true
|
|
var legal_every_move = team_every_legal_move(text_board, which_king)
|
|
for every_move in legal_every_move:
|
|
var piece = every_move[0]
|
|
#rint("piece at (%s,%s)" % [piece[0],piece[1]])
|
|
for move in every_move[1]:
|
|
#print("can move to: (%s,%s)" % [move[0],move[1]])
|
|
var fake_board = pretend_text_board_movement(text_board.duplicate(true), piece, move)
|
|
#print(text_board)
|
|
#print(fake_board)
|
|
var fake_captures = update_capture_tables(fake_board.duplicate(true))
|
|
var t1_captures = fake_captures[0]
|
|
var t2_captures = fake_captures[1]
|
|
if which_king == 1:
|
|
if is_king_team1_checked(fake_board, false, t2_captures):
|
|
pass
|
|
else:
|
|
checkmate = false
|
|
else: # team2
|
|
if is_king_team2_checked(fake_board, false, t1_captures):
|
|
pass
|
|
else:
|
|
checkmate = false
|
|
return checkmate
|
|
|
|
func get_pieces(text_board):
|
|
var pieces = []
|
|
var deepcopy = text_board.duplicate(true)
|
|
for i in 8:
|
|
for k in 8:
|
|
if deepcopy[i][k] is Array:
|
|
deepcopy[i][k].append([i,k])
|
|
pieces.append(deepcopy[i][k]) # 6
|
|
return pieces
|
|
|
|
func team_every_legal_move(text_board, team):
|
|
var every_legal_move = []
|
|
for i in 8:
|
|
for k in 8:
|
|
if text_board[i][k] is Array and text_board[i][k][chess_enum.team] == team:
|
|
var piece_name = text_board[i][k][chess_enum.piece_enum]
|
|
var coords = [i,k]
|
|
var move_pattern
|
|
#var name_of_this = match_piece_names_enums(piece_name)
|
|
move_pattern = get_move_pattern([piece_name, team], coords)
|
|
every_legal_move.append([[i,k, piece_name], can_chess_move(move_pattern, coords, text_board, tile_setting.hide_tiles_no_cover_allies)])
|
|
#rint(every_legal_move)
|
|
return every_legal_move
|
|
|
|
func match_piece_names_enums(piece_name):
|
|
if piece_names["pawn"] == piece_name:
|
|
return "pawn"
|
|
elif piece_names["rook"] == piece_name:
|
|
return "rook"
|
|
elif piece_names["knight"] == piece_name:
|
|
return "knight"
|
|
elif piece_names["bishop"] == piece_name:
|
|
return "bishop"
|
|
elif piece_names["queen"] == piece_name:
|
|
return "queen"
|
|
elif piece_names["king"] == piece_name:
|
|
return "king"
|
|
else:
|
|
print("unknown piece: %s" % piece_name)
|
|
|
|
func pretend_text_board_movement(text_board, old_coords, new_coords):
|
|
#print("old coords: (%s , %s)" % old_coords)
|
|
#print("new coords: (%s , %s)" % [new_coords[0], new_coords[1]])
|
|
#print(text_board)
|
|
var new_text_board = text_board.duplicate(true)
|
|
new_text_board[new_coords[0]][new_coords[1]] = new_text_board[old_coords[0]][old_coords[1]]
|
|
new_text_board[old_coords[0]][old_coords[1]] = 0
|
|
#print(new_text_board)
|
|
return new_text_board
|
|
|
|
func remove_movement_layer():
|
|
movement_layer = false
|
|
movement_layer_piece = null
|
|
var movement_tiles = get_tree().get_nodes_in_group("tile")
|
|
for e in movement_tiles:
|
|
e.queue_free()
|
|
|
|
func piece_clicked(piece):
|
|
if movement_layer:
|
|
print("I was clicked on, but the movement layer is toggled")
|
|
if movement_layer_piece == click_spot():
|
|
remove_movement_layer()
|
|
else:
|
|
if ! safely_handle_movement:
|
|
#var piece_name = piece.get_piece()
|
|
#rint("You clicked on a %s, team %s" % [piece_name, piece.get_team()])
|
|
var location = click_spot()
|
|
#rint("Spot: %s " % location)
|
|
var pattern = get_move_pattern(piece, location)
|
|
if can_chess_move(pattern, location, board_to_text_board(board)):
|
|
movement_layer = true
|
|
movement_layer_piece = location
|
|
|
|
func click_spot():
|
|
var square = get_viewport().get_mouse_position()
|
|
square[0] = floor(square[0] / board_cell)
|
|
square[1] = floor(square[1] / board_cell)
|
|
return square
|
|
|
|
func make_player2(color):
|
|
spawn_piece('rook', color, 0, 0, team2)
|
|
spawn_piece('knight', color, 1, 0, team2)
|
|
spawn_piece('bishop', color, 2, 0, team2)
|
|
spawn_piece('queen', color, 3, 0, team2)
|
|
team2_king = spawn_piece('king', color, 4, 0, team2)
|
|
spawn_piece('bishop', color, 5, 0, team2)
|
|
spawn_piece('knight', color, 6, 0, team2)
|
|
spawn_piece('rook', color, 7, 0, team2)
|
|
for i in BOARD_WIDTH + 1:
|
|
spawn_piece('pawn', color, i , 1, team2)
|
|
|
|
func make_player1(color):
|
|
spawn_piece('rook', color, 0, 7, team1)
|
|
spawn_piece('knight', color, 1, 7, team1)
|
|
spawn_piece('bishop', color, 2, 7, team1)
|
|
spawn_piece('queen', color, 3, 7, team1)
|
|
team1_king = spawn_piece('king', color, 4, 7, team1)
|
|
spawn_piece('bishop', color, 5, 7, team1)
|
|
spawn_piece('knight', color, 6, 7, team1)
|
|
spawn_piece('rook', color, 7, 7, team1)
|
|
for i in BOARD_WIDTH + 1:
|
|
spawn_piece('pawn', color, i , 6, team1)
|
|
|
|
func spawn_piece(piece_name, color, x=0, y=0, team=0):
|
|
var piece = piece_scene.instance()
|
|
piece.init(piece.piece_map.get(piece_name), piece.piece_color.get(color), team)
|
|
add_child(piece)
|
|
piece.connect("clicked", self, "piece_clicked", [piece])
|
|
board_add_piece(piece, x, y)
|
|
piece.position = in_square(Vector2(x * board_cell, y * board_cell))
|
|
return piece
|
|
|
|
func rand_pos():
|
|
return Vector2(rand_range(0, get_viewport().size.x),rand_range(0, get_viewport().size.y))
|
|
|
|
# needs to be Vector2 as that is what object.position takes
|
|
func in_square(vect2):
|
|
#rint(vect2)
|
|
vect2.x = ceil(vect2.x / board_cell)
|
|
#rint(vect2.x)
|
|
vect2.x *= board_cell
|
|
vect2.x += board_cell / 2
|
|
|
|
vect2.y = ceil(vect2.y / board_cell)
|
|
#rint(vect2.y)
|
|
vect2.y *= board_cell
|
|
vect2.y += board_cell / 2
|
|
|
|
#rint(vect2)
|
|
return vect2
|
|
|
|
func new_board():
|
|
# x →
|
|
# y
|
|
# ↓
|
|
# [0][0] = top left, [0][7] = bottom left, [7][0] = top right, [7][7] = bottom right
|
|
var new_board = []
|
|
for i in BOARD_HEIGHT + 1:
|
|
new_board.append([])
|
|
new_board[i].resize(BOARD_WIDTH + 1)
|
|
for j in BOARD_WIDTH + 1:
|
|
new_board[i][j] = 0
|
|
return new_board
|
|
|
|
func board_add_piece(piece, x, y):
|
|
board[x][y] = piece
|
|
|
|
enum {
|
|
move_2_up_pawn,
|
|
move_1_up_pawn,
|
|
attack_1_nw,
|
|
attack_1_ne,
|
|
en_passant_nw,
|
|
en_passant_ne,
|
|
|
|
move_2_down_pawn,
|
|
move_1_down_pawn,
|
|
attack_1_sw,
|
|
attack_1_se,
|
|
en_passant_sw,
|
|
en_passant_se,
|
|
|
|
move_1_up,
|
|
move_1_down,
|
|
move_1_left,
|
|
move_1_right,
|
|
move_1_nw,
|
|
move_1_ne,
|
|
move_1_sw,
|
|
move_1_se,
|
|
|
|
move_up_inf,
|
|
move_down_inf,
|
|
move_left_inf,
|
|
move_right_inf,
|
|
castling,
|
|
|
|
move_nw_inf,
|
|
move_ne_inf,
|
|
move_sw_inf,
|
|
move_se_inf,
|
|
|
|
knight,
|
|
}
|
|
|
|
func get_move_pattern(piece, coords):
|
|
var piece_name
|
|
var team
|
|
if piece is Object:
|
|
piece_name = piece.get_piece()
|
|
team = piece.get_team()
|
|
else:
|
|
piece_name = match_piece_names_enums(piece[chess_enum.piece_enum])
|
|
#print(piece_name)
|
|
team = piece[1]
|
|
#rint("Array: %s, %s" % [piece_name, team])
|
|
|
|
match (piece_name):
|
|
"pawn":
|
|
if team == team1:
|
|
if coords[1] == 6:
|
|
return [attack_1_nw, move_2_up_pawn, attack_1_ne, en_passant_ne, en_passant_nw]
|
|
else:
|
|
return [attack_1_nw, move_1_up_pawn, attack_1_ne, en_passant_ne, en_passant_nw]
|
|
else:
|
|
if coords[1] == 1:
|
|
return [attack_1_sw, move_2_down_pawn, attack_1_se, en_passant_se, en_passant_sw]
|
|
else:
|
|
return [attack_1_sw, move_1_down_pawn, attack_1_se, en_passant_se, en_passant_sw]
|
|
"rook":
|
|
return [move_up_inf, move_left_inf, move_right_inf, move_down_inf]
|
|
"knight":
|
|
return [knight]
|
|
"bishop":
|
|
return [move_ne_inf, move_nw_inf, move_sw_inf, move_se_inf]
|
|
"queen":
|
|
return [move_up_inf, move_down_inf, move_left_inf, move_right_inf, move_ne_inf, move_nw_inf, move_sw_inf, move_se_inf]
|
|
"king":
|
|
return [move_1_down, move_1_left, move_1_right, move_1_up, move_1_ne, move_1_nw, move_1_se, move_1_sw, castling]
|
|
_:
|
|
return []
|
|
|
|
enum chess_enum {
|
|
piece_enum = 0,
|
|
team = 1,
|
|
en_passant = 2,
|
|
has_moved = 3,
|
|
in_check = 4,
|
|
pos = 5
|
|
}
|
|
|
|
enum tile_setting {
|
|
hide_tiles_and_cover_allies = 0
|
|
show_tiles = 1
|
|
hide_tiles_no_cover_allies = 2
|
|
}
|
|
|
|
func can_chess_move(pattern, coords, text_board, create_tiles=tile_setting.show_tiles):
|
|
var can_move = []
|
|
#rint(text_board[coords[0]][coords[1]])
|
|
var curr_piece = text_board[coords[0]][coords[1]]
|
|
var curr_team = curr_piece[chess_enum.team]
|
|
for e in pattern:
|
|
match (e):
|
|
move_1_down_pawn:
|
|
var test = make_tiles(coords, [0,1], 1, true, curr_team, {}, create_tiles, text_board)
|
|
if test:
|
|
test[0].push_back(movement_condition.not_attacking)
|
|
can_move.append_array(test)
|
|
move_2_down_pawn:
|
|
var test = make_tiles(coords, [0,1], 1, true, curr_team, {}, create_tiles, text_board)
|
|
if test:
|
|
test[0].push_back(movement_condition.not_attacking)
|
|
can_move.append_array(test)
|
|
var test2 = make_tiles(coords, [0,2], 1, true, curr_team, {'tile_is_en_passant': true}, create_tiles, text_board)
|
|
if test2:
|
|
test2[0].push_back(movement_condition.not_attacking)
|
|
can_move.append_array(test2)
|
|
attack_1_sw:
|
|
var test = make_tiles(coords, [-1,1], 1, false, curr_team, {"must_attack": true}, create_tiles, text_board)
|
|
if test:
|
|
test[0].push_back(movement_condition.must_attack)
|
|
can_move.append_array(test)
|
|
attack_1_se:
|
|
var test = make_tiles(coords, [1,1], 1, false, curr_team, {"must_attack": true}, create_tiles, text_board)
|
|
if test:
|
|
test[0].push_back(movement_condition.must_attack)
|
|
can_move.append_array(test)
|
|
en_passant_sw:
|
|
var pawn_maybe = text_board[coords[0]-1][coords[1]]
|
|
if pawn_maybe and pawn_maybe[chess_enum.piece_enum] == piece_names["pawn"] and pawn_maybe[chess_enum.en_passant] == 1 and pawn_maybe[chess_enum.team] != curr_team:
|
|
var test = make_tiles(coords, [-1,1], 1, true, curr_team, {"en_passant_pawn": pawn_maybe}, create_tiles, text_board)
|
|
if test:
|
|
test[0].push_back(movement_condition.en_passant_kill)
|
|
can_move.append_array(test)
|
|
en_passant_se:
|
|
if ! coords[0] + 1 > BOARD_WIDTH:
|
|
var pawn_maybe = text_board[coords[0]+1][coords[1]]
|
|
if pawn_maybe and pawn_maybe[chess_enum.piece_enum] == piece_names["pawn"] and pawn_maybe[chess_enum.en_passant] == 1 and pawn_maybe[chess_enum.team] != curr_team:
|
|
var test = make_tiles(coords, [1,1], 1, true, curr_team, {"en_passant_pawn": pawn_maybe}, create_tiles, text_board)
|
|
if test:
|
|
test[0].push_back(movement_condition.en_passant_kill)
|
|
can_move.append_array(test)
|
|
|
|
move_1_up_pawn:
|
|
var test = make_tiles(coords, [0,-1], 1, true, curr_team, {}, create_tiles, text_board)
|
|
if test:
|
|
test[0].push_back(movement_condition.not_attacking)
|
|
can_move.append_array(test)
|
|
move_2_up_pawn:
|
|
var test = make_tiles(coords, [0,-1], 1, true, curr_team, {}, create_tiles, text_board)
|
|
if test:
|
|
test[0].push_back(movement_condition.not_attacking)
|
|
can_move.append_array(test)
|
|
var test2 = make_tiles(coords, [0,-2], 1, true, curr_team, {'tile_is_en_passant': true}, create_tiles, text_board)
|
|
if test2:
|
|
test2[0].push_back(movement_condition.not_attacking)
|
|
can_move.append_array(test2)
|
|
attack_1_nw:
|
|
var test = make_tiles(coords, [-1,-1], 1, false, curr_team, {"must_attack": true}, create_tiles, text_board)
|
|
if test:
|
|
test[0].push_back(movement_condition.must_attack)
|
|
can_move.append_array(test)
|
|
attack_1_ne:
|
|
var test = make_tiles(coords, [1,-1], 1, false, curr_team, {"must_attack": true}, create_tiles, text_board)
|
|
if test:
|
|
test[0].push_back(movement_condition.must_attack)
|
|
can_move.append_array(test)
|
|
en_passant_nw:
|
|
var pawn_maybe = text_board[coords[0]-1][coords[1]]
|
|
if pawn_maybe and pawn_maybe[chess_enum.piece_enum] == piece_names["pawn"] and pawn_maybe[chess_enum.en_passant] == 1 and pawn_maybe[chess_enum.team] != curr_team:
|
|
var test = make_tiles(coords, [-1,-1], 1, true, curr_team, {"en_passant_pawn": pawn_maybe}, create_tiles, text_board)
|
|
if test:
|
|
test[0].push_back(movement_condition.en_passant_kill)
|
|
can_move.append_array(test)
|
|
en_passant_ne:
|
|
if ! coords[0] + 1 > BOARD_WIDTH:
|
|
var pawn_maybe = text_board[coords[0]+1][coords[1]]
|
|
if pawn_maybe and pawn_maybe[chess_enum.piece_enum] == piece_names["pawn"] and pawn_maybe[chess_enum.en_passant] == 1 and pawn_maybe[chess_enum.team] != curr_team:
|
|
var test = make_tiles(coords, [1,-1], 1, true, curr_team, {"en_passant_pawn": pawn_maybe}, create_tiles, text_board)
|
|
if test:
|
|
test[0].push_back(movement_condition.en_passant_kill)
|
|
can_move.append_array(test)
|
|
|
|
move_up_inf:
|
|
can_move.append_array(make_tiles(coords, [0,-1], BOARD_HEIGHT, false, curr_team, {}, create_tiles, text_board))
|
|
move_down_inf:
|
|
can_move.append_array(make_tiles(coords, [0,1], BOARD_HEIGHT, false, curr_team, {}, create_tiles, text_board))
|
|
move_left_inf:
|
|
can_move.append_array(make_tiles(coords, [-1,0], BOARD_WIDTH, false, curr_team, {}, create_tiles, text_board))
|
|
move_right_inf:
|
|
can_move.append_array(make_tiles(coords, [1,0], BOARD_WIDTH, false, curr_team, {}, create_tiles, text_board))
|
|
castling:
|
|
if ! curr_piece[chess_enum.has_moved] and ! curr_piece[chess_enum.in_check]:
|
|
var y = coords[1]
|
|
var king_x = coords[0]
|
|
#var pieces = get_tree().get_nodes_in_group("piece")
|
|
var pieces = get_pieces(text_board)
|
|
for ele in pieces:
|
|
if ele[chess_enum.team] == curr_team and ele[chess_enum.piece_enum] == piece_names["rook"] and ! ele[chess_enum.has_moved] and ele[chess_enum.pos][1] == y:
|
|
#rint(ele)
|
|
var rook_x = ele[chess_enum.pos][0]
|
|
# king side
|
|
if rook_x > king_x:
|
|
var blocked = false
|
|
var diff = rook_x - king_x
|
|
for i in range(1, diff):
|
|
if board[king_x + i][y]:
|
|
blocked = true
|
|
# cannot castle through or to a tile that is attacked
|
|
if curr_team == team1:
|
|
if team2_capture[king_x + i][y] == 1:
|
|
blocked = true
|
|
else: # team2
|
|
if team1_capture[king_x + i][y] == 1:
|
|
blocked = true
|
|
|
|
#rint("There is something at (%s,%s) %s" % [king_x + i,y, board[king_x + i][y].get_piece() ])
|
|
if ! blocked:
|
|
var test = make_tiles(coords, [2,0], 1, false, curr_team, {"castling_rook": ele}, create_tiles, text_board)
|
|
if test:
|
|
test[0].push_back(movement_condition.king_side_castling)
|
|
can_move.append_array(test)
|
|
else:
|
|
var blocked = false
|
|
var diff = king_x - rook_x
|
|
for i in range(1, diff):
|
|
#rint(board[rook_x + i][y])
|
|
if board[rook_x + i][y]:
|
|
blocked = true
|
|
if i != 1: # on queenside, that first square doesn't really matter if it is attacked
|
|
if curr_team == team1:
|
|
if team2_capture[rook_x + i][y] == 1:
|
|
blocked = true
|
|
else: # team2
|
|
if team1_capture[rook_x + i][y] == 1:
|
|
blocked = true
|
|
#rint("There is something at (%s,%s) %s" % [rook_x + i, y, board[rook_x + i][y].get_piece()])
|
|
if ! blocked:
|
|
var test = make_tiles(coords, [-2,0], 1, false, curr_team, {"castling_rook": ele}, create_tiles, text_board)
|
|
if test:
|
|
test[0].push_back(movement_condition.queen_side_castling)
|
|
can_move.append_array(test)
|
|
|
|
move_ne_inf:
|
|
can_move.append_array(make_tiles(coords, [1,-1], 8, false, curr_team, {}, create_tiles, text_board))
|
|
move_nw_inf:
|
|
can_move.append_array(make_tiles(coords, [-1,-1], 8, false, curr_team, {}, create_tiles, text_board))
|
|
move_sw_inf:
|
|
can_move.append_array(make_tiles(coords, [-1,1], 8, false, curr_team, {}, create_tiles, text_board))
|
|
move_se_inf:
|
|
can_move.append_array(make_tiles(coords, [1,1], 8, false, curr_team, {}, create_tiles, text_board))
|
|
|
|
knight:
|
|
can_move.append_array(make_tiles(coords, [1,2], 1, false, curr_team, {}, create_tiles, text_board))
|
|
can_move.append_array(make_tiles(coords, [1,-2], 1, false, curr_team, {}, create_tiles, text_board))
|
|
can_move.append_array(make_tiles(coords, [-1,-2], 1, false, curr_team, {}, create_tiles, text_board))
|
|
can_move.append_array(make_tiles(coords, [-1,2], 1, false, curr_team, {}, create_tiles, text_board))
|
|
can_move.append_array(make_tiles(coords, [2,1], 1, false, curr_team, {}, create_tiles, text_board))
|
|
can_move.append_array(make_tiles(coords, [2,-1], 1, false, curr_team, {}, create_tiles, text_board))
|
|
can_move.append_array(make_tiles(coords, [-2,-1], 1, false, curr_team, {}, create_tiles, text_board))
|
|
can_move.append_array(make_tiles(coords, [-2,1], 1, false, curr_team, {}, create_tiles, text_board))
|
|
|
|
move_1_down:
|
|
can_move.append_array(make_tiles(coords, [0,1], 1, false, curr_team, {}, create_tiles, text_board))
|
|
move_1_up:
|
|
can_move.append_array(make_tiles(coords, [0,-1], 1, false, curr_team, {}, create_tiles, text_board))
|
|
move_1_right:
|
|
can_move.append_array(make_tiles(coords, [1,0], 1, false, curr_team, {}, create_tiles, text_board))
|
|
move_1_left:
|
|
can_move.append_array(make_tiles(coords, [-1,0], 1, false, curr_team, {}, create_tiles, text_board))
|
|
move_1_ne:
|
|
can_move.append_array(make_tiles(coords, [1,-1], 1, false, curr_team, {}, create_tiles, text_board))
|
|
move_1_nw:
|
|
can_move.append_array(make_tiles(coords, [-1,-1], 1, false, curr_team, {}, create_tiles, text_board))
|
|
move_1_se:
|
|
can_move.append_array(make_tiles(coords, [1,1], 1, false, curr_team, {}, create_tiles, text_board))
|
|
move_1_sw:
|
|
can_move.append_array(make_tiles(coords, [-1,1], 1, false, curr_team, {}, create_tiles, text_board))
|
|
return can_move
|
|
|
|
func position_to_board_cell(vect2):
|
|
var x = floor(vect2.x / board_cell)
|
|
var y = floor(vect2.y / board_cell)
|
|
return [x,y]
|
|
|
|
func movetile_clicked(move_tile):
|
|
#rint("Yep, I was clicked")
|
|
var location = click_spot()
|
|
var check = board[location[0]][location[1]]
|
|
var curr_piece = board[movement_layer_piece[0]][movement_layer_piece[1]]
|
|
if ! check:
|
|
pass
|
|
else:
|
|
check.kill()
|
|
|
|
board[location[0]][location[1]] = curr_piece
|
|
if move_tile.en_passant_tile:
|
|
#rint("toggling en passant able...")
|
|
en_passant_pawn = curr_piece
|
|
en_passant_wait = 2 # gets -1 in this script later
|
|
if move_tile.castling_rook:
|
|
# move_tile.castling_rook actually an array (created by get_pieces() rather than an object)
|
|
var rook_location = move_tile.castling_rook[chess_enum["pos"]]
|
|
# need to take that pos and figure out which rook object refers to
|
|
var pos = position_to_board_cell(Vector2(rook_location[0] * board_cell, rook_location[1] * board_cell))
|
|
var rook = board[pos[0]][pos[1]]
|
|
# king side
|
|
if 7 == rook_location[0]:
|
|
rook.position = in_square(Vector2(5 * board_cell, rook_location[1] * board_cell))
|
|
board[5][rook_location[1]] = board[7][rook_location[1]]
|
|
board[7][rook_location[1]] = 0
|
|
# queen side
|
|
else:
|
|
rook.position = in_square(Vector2(3 * board_cell, rook_location[1] * board_cell))
|
|
board[3][rook_location[1]] = board[0][rook_location[1]]
|
|
board[0][rook_location[1]] = 0
|
|
|
|
curr_piece.position = in_square(Vector2(location[0] * board_cell, location[1] * board_cell))
|
|
board[movement_layer_piece[0]][movement_layer_piece[1]] = 0
|
|
remove_movement_layer()
|
|
safely_handle_movement = true
|
|
|
|
curr_piece.has_moved = true
|
|
|
|
if move_tile.en_passant_kill_tile:
|
|
kill_en_passant_pawn(location)
|
|
|
|
if en_passant_wait >= 1:
|
|
en_passant_wait -= 1
|
|
if en_passant_wait == 0:
|
|
en_passant_pawn = null
|
|
|
|
new_turn()
|
|
|
|
func kill_en_passant_pawn(location):
|
|
if board[location[0]+1][location[1]] is Object and board[location[0]+1][location[1]] == en_passant_pawn:
|
|
board[location[0]+1][location[1]] = 0
|
|
if board[location[0]-1][location[1]] is Object and board[location[0]-1][location[1]] == en_passant_pawn:
|
|
board[location[0]-1][location[1]] = 0
|
|
if board[location[0]][location[1]+1] is Object and board[location[0]][location[1]+1] == en_passant_pawn:
|
|
board[location[0]][location[1]+1] = 0
|
|
if board[location[0]][location[1]-1] is Object and board[location[0]][location[1]-1] == en_passant_pawn:
|
|
board[location[0]][location[1]-1] = 0
|
|
en_passant_pawn.kill()
|
|
|
|
func spawn_move_tile(coords, en_passant_tile=false, en_passant_kill_tile=null, castling_rook=null):
|
|
var move_tile = movetile_scene.instance()
|
|
add_child(move_tile)
|
|
move_tile.connect("move_clicked", self, "movetile_clicked", [move_tile])
|
|
move_tile.position = in_square(Vector2(coords[0] * board_cell, coords[1] * board_cell))
|
|
if en_passant_tile: move_tile.en_passant_tile = true
|
|
if en_passant_kill_tile: move_tile.en_passant_kill_tile = true
|
|
if castling_rook: move_tile.castling_rook = castling_rook
|
|
#rint(move_tile.position)
|
|
|
|
func make_tiles(coords, pattern, go_range, cant_attack, curr_team,
|
|
dict = {
|
|
"must_attack": false,
|
|
'tile_is_en_passant': false,
|
|
'en_passant_pawn': null,
|
|
'castling_rook': null
|
|
}, create_tiles = tile_setting.show_tiles, text_board=[]):
|
|
var x = coords[0]
|
|
var y = coords[1]
|
|
var pattern0 = pattern[0]
|
|
var pattern1 = pattern[1]
|
|
var a = 0
|
|
var b = 0
|
|
|
|
var made_tile = []
|
|
|
|
for _i in range(1,go_range+1):
|
|
a += pattern0
|
|
b += pattern1
|
|
# dont go out of bounds: not bigger than board size but not smaller than 0
|
|
if (x + a) <= BOARD_WIDTH and (y + b) <= BOARD_HEIGHT and (x + a) >= 0 and (y + b) >= 0 :
|
|
var check = text_board[x + a][y + b]
|
|
if ! check and ! dict.get("must_attack"):
|
|
if create_tiles == tile_setting.show_tiles:
|
|
spawn_move_tile([x + a, y + b], dict.get("tile_is_en_passant"), dict.get("en_passant_pawn"), dict.get("castling_rook"))
|
|
made_tile.push_back([x + a, y + b])
|
|
elif dict.get("must_attack"): # pawn setting
|
|
if check and check[chess_enum.team] != curr_team:
|
|
if create_tiles == tile_setting.show_tiles:
|
|
spawn_move_tile([x + a, y + b])
|
|
made_tile.push_back([x + a, y + b])
|
|
elif create_tiles == 0:
|
|
made_tile.push_back([x + a, y + b])
|
|
elif ! cant_attack and check[chess_enum.team] != curr_team:
|
|
if create_tiles == tile_setting.show_tiles:
|
|
spawn_move_tile([x + a, y + b], dict.get("tile_is_en_passant"), dict.get("en_passant_pawn"))
|
|
made_tile.push_back([x + a, y + b])
|
|
break # rules of chess say pieces cant go past another
|
|
elif create_tiles == tile_setting.hide_tiles_and_cover_allies and ! cant_attack and check[chess_enum.team] == curr_team :
|
|
# ^ in otherwords: we won't mark it on map but will 'mark' it for non-maps (like capture board)
|
|
made_tile.push_back([x + a, y + b])
|
|
break # but still can't go past teammate
|
|
else:
|
|
break
|
|
return made_tile
|
|
|
|
# option (used when we KNOW it is an array)
|
|
# "object" -> sprite object
|
|
# "tile" -> return info about the tile
|
|
func array_piece(coords, option=null):
|
|
var element = board[coords[0]][coords[1]]
|
|
#rint(element)
|
|
if element is Array:
|
|
if option == "object":
|
|
return element[0]
|
|
elif option == "tile":
|
|
return element[1]
|
|
return element
|