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Copy pathgtp_cmd_handlers.py
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369 lines (303 loc) · 12.9 KB
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# Copyright 2018 Google LLC
#
# Licensed under the Apache License, Version 2.0 (the "License");
# you may not use this file except in compliance with the License.
# You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#
# Unless required by applicable law or agreed to in writing, software
# distributed under the License is distributed on an "AS IS" BASIS,
# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
# See the License for the specific language governing permissions and
# limitations under the License.
from datetime import datetime
import itertools
import json
import time
import sgf_wrapper
import go
import coords
from utils import dbg
def translate_gtp_color(gtp_color):
if gtp_color.lower() in ["b", "black"]:
return go.BLACK
if gtp_color.lower() in ["w", "white"]:
return go.WHITE
raise ValueError("invalid color {}".format(gtp_color))
class BasicCmdHandler(object):
"""GTP command handler for basic play commands."""
def __init__(self, player, courtesy_pass=False):
self._komi = 6.5
self._player = player
self._player.initialize_game()
self._courtesy_pass = courtesy_pass
def cmd_boardsize(self, n: int):
if n != go.N:
raise ValueError("unsupported board size: {}".format(n))
def cmd_clear_board(self):
position = self._player.get_position()
if (self._player.get_result_string() and
position and len(position.recent) > 1):
try:
sgf = self._player.to_sgf()
with open(datetime.now().strftime("%Y-%m-%d-%H:%M.sgf"), 'w') as f:
f.write(sgf)
except NotImplementedError:
pass
except:
dbg("Error saving sgf")
self._player.initialize_game(go.Position(komi=self._komi))
def cmd_komi(self, komi: float):
self._komi = komi
self._player.get_position().komi = komi
def cmd_play(self, arg0: str, arg1=None):
if arg1 is None:
move = arg0
else:
# let's assume this never happens for now.
# self._accomodate_out_of_turn(translate_gtp_color(arg0))
move = arg1
return self._player.play_move(coords.from_gtp(move))
def cmd_genmove(self, color=None):
if color is not None:
self._accomodate_out_of_turn(color)
if self._courtesy_pass:
# If courtesy pass is True and the previous move was a pass, we'll
# pass too, regardless of score or our opinion on the game.
position = self._player.get_position()
if position.recent and position.recent[-1].move is None:
return "pass"
move = self._player.suggest_move(self._player.get_position())
if self._player.should_resign():
self._player.set_result(-1 * self._player.get_position().to_play,
was_resign=True)
return "resign"
self._player.play_move(move)
if self._player.get_root().is_done():
self._player.set_result(self._player.get_position().result(),
was_resign=False)
return coords.to_gtp(move)
def cmd_undo(self):
raise NotImplementedError()
def cmd_showboard(self):
dbg('\n\n' + str(self._player.get_position()) + '\n\n')
return True
def cmd_final_score(self):
return self._player.get_result_string()
def _accomodate_out_of_turn(self, color: str):
position = self._player.get_position()
if translate_gtp_color(color) != position.to_play:
position.flip_playerturn(mutate=True)
class KgsCmdHandler(object):
def __init__(self, player):
self._player = player
def cmd_time_left(self, color: str, time: int, stones: int):
pass
def cmd_kgs_chat(self, msg_type: str, sender: str, text: str):
if not hasattr(self._player, 'get_root'):
return "I have nothing interesting to say."
root = self._player.get_root()
default_response = "Supported commands are 'winrate', 'nextplay', 'fortune', and 'help'."
if root is None or root.position.n == 0:
return "I'm not playing right now. " + default_response
if 'winrate' in text.lower():
wr = (abs(root.Q) + 1.0) / 2.0
color = "Black" if root.Q > 0 else "White"
return "{} {:.2f}%".format(color, wr * 100.0)
elif 'nextplay' in text.lower():
return "I'm thinking... " + root.most_visited_path()
elif 'fortune' in text.lower():
return "You're feeling lucky!"
elif 'help' in text.lower():
return "I can't help much with go -- try ladders! Otherwise: " + default_response
else:
return default_response
class RegressionsCmdHandler(object):
def __init__(self, player):
self._player = player
def cmd_loadsgf(self, filename: str, movenum=0):
try:
with open(filename, 'r') as f:
contents = f.read()
except:
raise ValueError("Unreadable file: " + filename)
# Clear the board before replaying sgf
# TODO: should this use the sgfs komi?
self._player.initialize_game(go.Position())
# This is kinda bad, because replay_sgf is already calling
# 'play move' on its internal position objects, but we really
# want to advance the engine along with us rather than try to
# push in some finished Position object.
for idx, p in enumerate(sgf_wrapper.replay_sgf(contents)):
dbg("playing #", idx, p.next_move)
self._player.play_move(p.next_move)
if movenum and idx == movenum:
break
class GoGuiCmdHandler(object):
"""GTP extensions of 'analysis commands' for gogui."""
def __init__(self, player):
self._player = player
def cmd_gogui_analyze_commands(self):
return "\n".join(["var/Most Read Variation/nextplay",
"var/Think a spell/spin",
"var/Final score/final_score",
"pspairs/Visit Heatmap/visit_heatmap",
"pspairs/Q Heatmap/q_heatmap"])
def cmd_nextplay(self):
return self._player.get_root().mvp_gg()
def cmd_visit_heatmap(self):
root = self._player.get_root()
sort_order = list(range(go.N * go.N + 1))
sort_order.sort(key=lambda i: root.child_N[i], reverse=True)
return self._heatmap(sort_order, root, 'child_N')
def cmd_spin(self):
for i in range(50):
for j in range(100):
self._player.tree_search()
moves = self.cmd_nextplay().lower()
moves = moves.split()
root = self._player.get_root()
colors = "bw" if root.position.to_play is go.BLACK else "wb"
moves_cols = " ".join(['{} {}'.format(*z)
for z in zip(itertools.cycle(colors), moves)])
dbg("gogui-gfx: TEXT", "{:.3f} after {}".format(root.Q, root.N))
dbg("gogui-gfx: VAR", moves_cols)
return self.cmd_nextplay()
def _heatmap(self, sort_order, node, prop):
return "\n".join(["{!s:6} {}".format(
coords.to_gtp(coords.from_flat(key)),
node.__dict__.get(prop)[key])
for key in sort_order if node.child_N[key] > 0][: 20])
class MiniguiBasicCmdHandler(BasicCmdHandler):
def __init__(self, player, courtesy_pass=False):
super().__init__(player, courtesy_pass)
# Wrap the game's tree_search method, which allows us to stream the
# search state back over stderr if requested.
self._tree_search = self._player.tree_search
self._player.tree_search = self._tree_search_wrapper
self._last_report_time = None
self._report_search_interval = 0.0
def cmd_echo(self, *args):
return " ".join(args)
def cmd_info(self):
return ("num_readouts: %d report_search_interval: %.1f n: %d "
"resign_threshold: %f" % (
self._player.get_num_readouts(),
self._report_search_interval * 1000, go.N,
self._player.resign_threshold))
def cmd_readouts(self, readouts: int):
readouts = max(8, readouts)
self._player.set_num_readouts(readouts)
return readouts
def cmd_report_search_interval(self, interval_ms: float):
self._report_search_interval = interval_ms / 1000.0
def cmd_clear_board(self):
super().cmd_clear_board()
self._minigui_report_position()
def cmd_play(self, arg0: str, arg1=None):
super().cmd_play(arg0, arg1)
root = self._player.get_root()
if root.is_done():
self._player.set_result(
root.position.result(), was_resign=False)
self._minigui_report_position()
def cmd_genmove(self, color=None):
start = time.time()
result = super().cmd_genmove(color)
duration = time.time() - start
root = self._player.get_root()
if result != "resign":
dbg("")
dbg(root.position.__str__(colors=False))
dbg("%d readouts, %.3f s/100. (%.2f sec)" % (
self._player.get_num_readouts(),
duration / self._player.get_num_readouts() * 100.0, duration))
dbg("")
if root.is_done():
self._player.set_result(
root.position.result(), was_resign=False)
self._minigui_report_position()
return result
def _tree_search_wrapper(self, parallel_readouts=None):
leaves = self._tree_search(parallel_readouts)
if self._report_search_interval:
now = time.time()
if (self._last_report_time is None or
now - self._last_report_time > self._report_search_interval):
self._minigui_report_search_status(leaves)
self._last_report_time = now
return leaves
def _minigui_report_position(self):
root = self._player.get_root()
position = root.position
board = []
for row in range(go.N):
for col in range(go.N):
stone = position.board[row, col]
if stone == go.BLACK:
board.append("X")
elif stone == go.WHITE:
board.append("O")
else:
board.append(".")
msg = {
"id": hex(id(root)),
"toPlay": "B" if position.to_play == 1 else "W",
"moveNum": position.n,
"stones": "".join(board),
"gameOver": position.is_game_over(),
"caps": position.caps,
}
if root.parent and root.parent.parent:
msg["parentId"] = hex(id(root.parent))
msg["q"] = float(root.parent.Q)
if position.recent:
msg["move"] = coords.to_gtp(position.recent[-1].move)
dbg("mg-position:%s" % json.dumps(msg, sort_keys=True))
def _minigui_report_search_status(self, leaves):
"""Prints the current MCTS search status to stderr.
Reports the current search path, root node's child_Q, root node's
child_N, the most visited path in a format that can be parsed by
one of the STDERR_HANDLERS in minigui.ts.
Args:
leaves: list of leaf MCTSNodes returned by tree_search().
"""
root = self._player.get_root()
msg = {
"id": hex(id(root)),
"n": int(root.N),
"q": float(root.Q),
}
msg["childQ"] = [int(round(q * 1000)) for q in root.child_Q]
msg["childN"] = [int(n) for n in root.child_N]
ranked_children = root.rank_children()
variations = {}
for i in ranked_children[:15]:
if root.child_N[i] == 0 or i not in root.children:
break
c = coords.to_gtp(coords.from_flat(i))
child = root.children[i]
nodes = child.most_visited_path_nodes()
moves = [coords.to_gtp(coords.from_flat(m.fmove)) for m in nodes]
variations[c] = {
"n": int(root.child_N[i]),
"q": float(root.child_Q[i]),
"moves": [c] + moves,
}
if leaves:
path = []
leaf = leaves[0]
while leaf != root:
path.append(leaf.fmove)
leaf = leaf.parent
if path:
path.reverse()
variations["live"] = {
"n": int(root.child_N[path[0]]),
"q": float(root.child_Q[path[0]]),
"moves": [coords.to_gtp(coords.from_flat(m)) for m in path]
}
if variations:
msg["variations"] = variations
dbg("mg-update:%s" % json.dumps(msg, sort_keys=True))