Contract con_go_v1
| Creator | ae9cfa894495930b8d2f1707ab936325b5c848ace677bb8ba41dfe7dcdb3e3e6 |
| Creation Hash | 12011d315c576d29964e8b8b197cb3ea7a0d319171adc214b72d9e4a955c5d0f |
| Created On | 846 days ago - 12/29/2021, 8:45:46 PM UTC+0 |
Contract Code
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# con_go_v1
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NUM_ROWS = NUM_COLS = 8
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NUM_SQUARES = NUM_ROWS * NUM_COLS
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INITIAL_BOARD = ' '
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OPPOSING = {
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'b': 'w',
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'w': 'b',
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}
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INITIAL_STATE = {
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'current_player': 'b',
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'board': str(INITIAL_BOARD),
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'creator_team': 'b',
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'opponent_team': 'w',
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}
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assert len(INITIAL_BOARD) == NUM_SQUARES, 'Invalid initial board.'
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def coords_to_index(x: int, y: int) -> int:
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assert valid_coords(x, y), 'Invalid (x, y): ({}, {})'.format(x, y)
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return x * NUM_ROWS + y
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def index_to_coords(index: int) -> tuple:
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assert valid_index(index), 'Invalid index: {}'.format(index)
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x = index // NUM_ROWS
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y = index % NUM_ROWS
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return (x, y)
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def valid_index(index: int) -> bool:
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return index >= 0 and index < NUM_SQUARES
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def valid_coords(x: int, y: int) -> bool:
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return x >= 0 and x < NUM_ROWS and y >= 0 and y < NUM_COLS
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@export
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def get_initial_state(x: str = None) -> dict:
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return INITIAL_STATE
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def opposing_team(team: str) -> str:
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return OPPOSING[team]
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def get_adjacent_positions(x: int, y: int) -> list:
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possible = [
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(x - 1, y),
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(x + 1, y),
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(x, y - 1),
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(x, y + 1)
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]
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return [p for p in possible if valid_coords(p[0], p[1])]
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def get_connecting_positions(x: int, y: int, board: list) -> set:
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team = board[coords_to_index(x, y)]
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current = [(x, y)]
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visited = set([])
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while len(current) > 0:
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tmp_current = []
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for pos in current:
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visited.add(pos)
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adjacent = get_adjacent_positions(pos[0], pos[1])
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for pos2 in adjacent:
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if pos2 not in visited:
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if board[coords_to_index(pos2[0], pos2[1])] == team:
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tmp_current.append(pos2)
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current = tmp_current
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return visited
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def is_encroached(connecting_positions: set, board: list, opponent: str) -> bool:
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for pos in connecting_positions:
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adjacent = get_adjacent_positions(pos[0], pos[1])
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for adj in adjacent:
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if adj not in connecting_positions:
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adj_index = coords_to_index(adj[0], adj[1])
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if board[adj_index] != opponent:
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return False
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return True
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@export
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def force_end_round(state: dict, metadata: dict):
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board = list(state['board'])
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white_pieces = board.count('w')
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black_pieces = board.count('b')
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if white_pieces == black_pieces:
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# Tie
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winner = None
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elif white_pieces > black_pieces:
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winner = 'w'
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else:
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winner = 'b'
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if winner is None:
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state['stalemate'] = True
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else:
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state['winner'] = winner
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@export
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def move(caller: str, team: str, payload: dict, state: dict, metadata: dict):
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# Assert it's the right player's piece
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x1=payload['x1']
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y1=payload['y1']
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board = list(state['board'])
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index = coords_to_index(x1, y1)
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existing_piece = board[index]
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assert state['current_player'] == team, 'It is not your turn to move.'
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assert existing_piece == ' ', 'This tile has already been placed.'
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opponent = opposing_team(team)
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board[index] = team
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# Calculate state
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adjacent_positions = get_adjacent_positions(x1, y1)
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connecting_positions = get_connecting_positions(x1, y1, board)
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assert not is_encroached(connecting_positions, board, opponent), 'Cannot place a piece here. You are encroached.'
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for adjacent_pos in adjacent_positions:
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adjacent_index = coords_to_index(adjacent_pos[0], adjacent_pos[1])
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if board[adjacent_index] == opponent:
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# Check if we encroached them
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opponent_connected_positions = get_connecting_positions(adjacent_pos[0], adjacent_pos[1], board)
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if is_encroached(opponent_connected_positions, board, team):
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for encroached_pos in opponent_connected_positions:
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encroached_index = coords_to_index(encroached_pos[0], encroached_pos[1])
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board[encroached_index] = ' '
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board = ''.join(board)
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state['current_player'] = opponent
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state['board'] = board
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Byte Code
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