plomlompom.com Git - plomrogue/blob - roguelike-server

   1 #!/usr/bin/python3
   2
   3 # This file is part of PlomRogue. PlomRogue is licensed under the GPL version 3
   4 # or any later version. For details on its copyright, license, and warranties,
   5 # see the file NOTICE in the root directory of the PlomRogue source package.
   6
   7
   8 import argparse
   9 import errno
  10 import os
  11 import shlex
  12 import shutil
  13 import time
  14 import ctypes
  15
  16
  17 class RandomnessIO:
  18     """"Interface to libplomrogue's pseudo-randomness generator."""
  19
  20     def set_seed(self, seed):
  21         libpr.seed_rrand(1, seed)
  22
  23     def get_seed(self):
  24         return libpr.seed_rrand(0, 0)
  25
  26     def next(self):
  27         return libpr.rrand()
  28
  29     seed = property(get_seed, set_seed)
  30
  31
  32 def prep_library():
  33     """Prepare ctypes library at ./libplomrogue.so"""
  34     libpath = ("./libplomrogue.so")
  35     if not os.access(libpath, os.F_OK):
  36         raise SystemExit("No library " + libpath + ", run ./redo first?")
  37     libpr = ctypes.cdll.LoadLibrary(libpath)
  38     libpr.seed_rrand.restype = ctypes.c_uint32
  39     return libpr
  40
  41
  42 def c_pointer_to_bytearray(ba):
  43     """Return C char * pointer to ba."""
  44     type = ctypes.c_char * len(ba)
  45     return type.from_buffer(ba)
  46
  47
  48 def strong_write(file, string):
  49     """Apply write(string), then flush()."""
  50     file.write(string)
  51     file.flush()
  52
  53
  54 def setup_server_io():
  55     """Fill IO files DB with proper file( path)s. Write process IO test string.
  56
  57     Ensure IO files directory at server/. Remove any old input file if found.
  58     Set up new input file for reading, and new output file for writing. Start
  59     output file with process hash line of format PID + " " + floated UNIX time
  60     (io_db["teststring"]). Raise SystemExit if file is found at path of either
  61     record or save file plus io_db["tmp_suffix"].
  62     """
  63     def detect_atomic_leftover(path, tmp_suffix):
  64         path_tmp = path + tmp_suffix
  65         msg = "Found file '" + path_tmp + "' that may be a leftover from an " \
  66               "aborted previous attempt to write '" + path + "'. Aborting " \
  67               "until matter is resolved by removing it from its current path."
  68         if os.access(path_tmp, os.F_OK):
  69             raise SystemExit(msg)
  70     io_db["teststring"] = str(os.getpid()) + " " + str(time.time())
  71     io_db["save_wait"] = 0
  72     io_db["verbose"] = False
  73     io_db["record_chunk"] = ""
  74     os.makedirs(io_db["path_server"], exist_ok=True)
  75     io_db["file_out"] = open(io_db["path_out"], "w")
  76     strong_write(io_db["file_out"], io_db["teststring"] + "\n")
  77     if os.access(io_db["path_in"], os.F_OK):
  78         os.remove(io_db["path_in"])
  79     io_db["file_in"] = open(io_db["path_in"], "w")
  80     io_db["file_in"].close()
  81     io_db["file_in"] = open(io_db["path_in"], "r")
  82     detect_atomic_leftover(io_db["path_save"], io_db["tmp_suffix"])
  83     detect_atomic_leftover(io_db["path_record"], io_db["tmp_suffix"])
  84
  85
  86 def cleanup_server_io():
  87     """Close and (if io_db["kicked_by_rival"] false) remove files in io_db."""
  88     def helper(file_key, path_key):
  89         if file_key in io_db:
  90             io_db[file_key].close()
  91         if not io_db["kicked_by_rival"] \
  92            and os.access(io_db[path_key], os.F_OK):
  93             os.remove(io_db[path_key])
  94     helper("file_in", "path_in")
  95     helper("file_out", "path_out")
  96     helper("file_worldstate", "path_worldstate")
  97     if "file_record" in io_db:
  98         io_db["file_record"].close()
  99
 100
 101 def obey(command, prefix, replay=False, do_record=False):
 102     """Call function from commands_db mapped to command's first token.
 103
 104     Tokenize command string with shlex.split(comments=True). If replay is set,
 105     a non-meta command from the commands_db merely triggers obey() on the next
 106     command from the records file. If not, non-meta commands set
 107     io_db["worldstate_updateable"] to world_db["WORLD_ACTIVE"], and, if
 108     do_record is set, are recorded to io_db["record_chunk"], and save_world()
 109     is called (and io_db["record_chunk"] written) if 15 seconds have passed
 110     since the last time it was called. The prefix string is inserted into the
 111     server's input message between its beginning 'input ' and ':'. All activity
 112     is preceded by a server_test() call. Commands that start with a lowercase
 113     letter are ignored when world_db["WORLD_ACTIVE"] is False/0.
 114     """
 115     server_test()
 116     if io_db["verbose"]:
 117         print("input " + prefix + ": " + command)
 118     try:
 119         tokens = shlex.split(command, comments=True)
 120     except ValueError as err:
 121         print("Can't tokenize command string: " + str(err) + ".")
 122         return
 123     if len(tokens) > 0 and tokens[0] in commands_db \
 124        and len(tokens) == commands_db[tokens[0]][0] + 1:
 125         if commands_db[tokens[0]][1]:
 126             commands_db[tokens[0]][2](*tokens[1:])
 127         elif tokens[0][0].islower() and not world_db["WORLD_ACTIVE"]:
 128             print("Ignoring lowercase-starting commands when world inactive.")
 129         elif replay:
 130             print("Due to replay mode, reading command as 'go on in record'.")
 131             line = io_db["file_record"].readline()
 132             if len(line) > 0:
 133                 obey(line.rstrip(), io_db["file_record"].prefix
 134                      + str(io_db["file_record"].line_n))
 135                 io_db["file_record"].line_n = io_db["file_record"].line_n + 1
 136             else:
 137                 print("Reached end of record file.")
 138         else:
 139             commands_db[tokens[0]][2](*tokens[1:])
 140             if do_record:
 141                 io_db["record_chunk"] += command + "\n"
 142                 if time.time() > io_db["save_wait"] + 15:
 143                     atomic_write(io_db["path_record"], io_db["record_chunk"],
 144                                  do_append=True)
 145                     if world_db["WORLD_ACTIVE"]:
 146                         save_world()
 147                     io_db["record_chunk"] = ""
 148                     io_db["save_wait"] = time.time()
 149             io_db["worldstate_updateable"] = world_db["WORLD_ACTIVE"]
 150     elif 0 != len(tokens):
 151         print("Invalid command/argument, or bad number of tokens.")
 152
 153
 154 def atomic_write(path, text, do_append=False, delete=True):
 155     """Atomic write of text to file at path, appended if do_append is set."""
 156     path_tmp = path + io_db["tmp_suffix"]
 157     mode = "w"
 158     if do_append:
 159         mode = "a"
 160         if os.access(path, os.F_OK):
 161             shutil.copyfile(path, path_tmp)
 162     file = open(path_tmp, mode)
 163     strong_write(file, text)
 164     file.close()
 165     if delete and os.access(path, os.F_OK):
 166         os.remove(path)
 167     os.rename(path_tmp, path)
 168
 169
 170 def save_world():
 171     """Save all commands needed to reconstruct current world state."""
 172
 173     def quote(string):
 174         string = string.replace("\u005C", '\u005C\u005C')
 175         return '"' + string.replace('"', '\u005C"') + '"'
 176
 177     def mapsetter(key):
 178         def helper(id=None):
 179             string = ""
 180             if key == "MAP" or world_db["Things"][id][key]:
 181                 map = world_db["MAP"] if key == "MAP" \
 182                                       else world_db["Things"][id][key]
 183                 length = world_db["MAP_LENGTH"]
 184                 for i in range(length):
 185                     line = map[i * length:(i * length) + length].decode()
 186                     string = string + key + " " + str(i) + " " + quote(line) \
 187                         + "\n"
 188             return string
 189         return helper
 190
 191     def memthing(id):
 192         string = ""
 193         for memthing in world_db["Things"][id]["T_MEMTHING"]:
 194             string = string + "T_MEMTHING " + str(memthing[0]) + " " + \
 195                 str(memthing[1]) + " " + str(memthing[2]) + "\n"
 196         return string
 197
 198     def helper(category, id_string, special_keys={}):
 199         string = ""
 200         for id in sorted(world_db[category].keys()):
 201             string = string + id_string + " " + str(id) + "\n"
 202             for key in sorted(world_db[category][id].keys()):
 203                 if not key in special_keys:
 204                     x = world_db[category][id][key]
 205                     argument = quote(x) if str == type(x) else str(x)
 206                     string = string + key + " " + argument + "\n"
 207                 elif special_keys[key]:
 208                     string = string + special_keys[key](id)
 209         return string
 210
 211     string = ""
 212     for key in sorted(world_db.keys()):
 213         if (not isinstance(world_db[key], dict)) and key != "MAP" and \
 214            key != "WORLD_ACTIVE":
 215             string = string + key + " " + str(world_db[key]) + "\n"
 216     string = string + mapsetter("MAP")()
 217     string = string + helper("ThingActions", "TA_ID")
 218     string = string + helper("ThingTypes", "TT_ID", {"TT_CORPSE_ID": False})
 219     for id in sorted(world_db["ThingTypes"].keys()):
 220         string = string + "TT_ID " + str(id) + "\n" + "TT_CORPSE_ID " + \
 221             str(world_db["ThingTypes"][id]["TT_CORPSE_ID"]) + "\n"
 222     string = string + helper("Things", "T_ID",
 223                              {"T_CARRIES": False, "carried": False,
 224                               "T_MEMMAP": mapsetter("T_MEMMAP"),
 225                               "T_MEMTHING": memthing, "fovmap": False,
 226                               "T_MEMDEPTHMAP": mapsetter("T_MEMDEPTHMAP")})
 227     for id in sorted(world_db["Things"].keys()):
 228         if [] != world_db["Things"][id]["T_CARRIES"]:
 229             string = string + "T_ID " + str(id) + "\n"
 230             for carried in sorted(world_db["Things"][id]["T_CARRIES"]):
 231                 string = string + "T_CARRIES " + str(carried) + "\n"
 232     string = string + "SEED_RANDOMNESS " + str(rand.seed) + "\n" + \
 233         "WORLD_ACTIVE " + str(world_db["WORLD_ACTIVE"])
 234     atomic_write(io_db["path_save"], string)
 235
 236
 237 def obey_lines_in_file(path, name, do_record=False):
 238     """Call obey() on each line of path's file, use name in input prefix."""
 239     file = open(path, "r")
 240     line_n = 1
 241     for line in file.readlines():
 242         obey(line.rstrip(), name + "file line " + str(line_n),
 243              do_record=do_record)
 244         line_n = line_n + 1
 245     file.close()
 246
 247
 248 def parse_command_line_arguments():
 249     """Return settings values read from command line arguments."""
 250     parser = argparse.ArgumentParser()
 251     parser.add_argument('-s', nargs='?', type=int, dest='replay', const=1,
 252                         action='store')
 253     parser.add_argument('-l', nargs="?", const="save", dest='savefile',
 254                         action="store")
 255     parser.add_argument('-v', dest='verbose', action='store_true')
 256     opts, unknown = parser.parse_known_args()
 257     return opts
 258
 259
 260 def server_test():
 261     """Ensure valid server out file belonging to current process.
 262
 263     This is done by comparing io_db["teststring"] to what's found at the start
 264     of the current file at io_db["path_out"]. On failure, set
 265     io_db["kicked_by_rival"] and raise SystemExit.
 266     """
 267     if not os.access(io_db["path_out"], os.F_OK):
 268         raise SystemExit("Server output file has disappeared.")
 269     file = open(io_db["path_out"], "r")
 270     test = file.readline().rstrip("\n")
 271     file.close()
 272     if test != io_db["teststring"]:
 273         io_db["kicked_by_rival"] = True
 274         msg = "Server test string in server output file does not match. This" \
 275               " indicates that the current server process has been " \
 276               "superseded by another one."
 277         raise SystemExit(msg)
 278
 279
 280 def read_command():
 281     """Return next newline-delimited command from server in file.
 282
 283     Keep building return string until a newline is encountered. Pause between
 284     unsuccessful reads, and after too much waiting, run server_test().
 285     """
 286     wait_on_fail = 0.03333
 287     max_wait = 5
 288     now = time.time()
 289     command = ""
 290     while True:
 291         add = io_db["file_in"].readline()
 292         if len(add) > 0:
 293             command = command + add
 294             if len(command) > 0 and "\n" == command[-1]:
 295                 command = command[:-1]
 296                 break
 297         else:
 298             time.sleep(wait_on_fail)
 299             if now + max_wait < time.time():
 300                 server_test()
 301                 now = time.time()
 302     return command
 303
 304
 305 def try_worldstate_update():
 306     """Write worldstate file if io_db["worldstate_updateable"] is set."""
 307     if io_db["worldstate_updateable"]:
 308
 309         def draw_visible_Things(map, run):
 310             for id in world_db["Things"]:
 311                 type = world_db["Things"][id]["T_TYPE"]
 312                 consumable = world_db["ThingTypes"][type]["TT_CONSUMABLE"]
 313                 alive = world_db["ThingTypes"][type]["TT_LIFEPOINTS"]
 314                 if (0 == run and not consumable and not alive) \
 315                    or (1 == run and consumable and not alive) \
 316                    or (2 == run and alive):
 317                     y = world_db["Things"][id]["T_POSY"]
 318                     x = world_db["Things"][id]["T_POSX"]
 319                     fovflag = world_db["Things"][0]["fovmap"][(y * length) + x]
 320                     if 'v' == chr(fovflag):
 321                         c = world_db["ThingTypes"][type]["TT_SYMBOL"]
 322                         map[(y * length) + x] = ord(c)
 323
 324         def write_map(string, map):
 325             for i in range(length):
 326                 line = map[i * length:(i * length) + length].decode()
 327                 string = string + line + "\n"
 328             return string
 329
 330         inventory = ""
 331         if [] == world_db["Things"][0]["T_CARRIES"]:
 332             inventory = "(none)\n"
 333         else:
 334             for id in world_db["Things"][0]["T_CARRIES"]:
 335                 type_id = world_db["Things"][id]["T_TYPE"]
 336                 name = world_db["ThingTypes"][type_id]["TT_NAME"]
 337                 inventory = inventory + name + "\n"
 338         string = str(world_db["TURN"]) + "\n" + \
 339             str(world_db["Things"][0]["T_LIFEPOINTS"]) + "\n" + \
 340             str(world_db["Things"][0]["T_SATIATION"]) + "\n" + \
 341             inventory + "%\n" + \
 342             str(world_db["Things"][0]["T_POSY"]) + "\n" + \
 343             str(world_db["Things"][0]["T_POSX"]) + "\n" + \
 344             str(world_db["MAP_LENGTH"]) + "\n"
 345         length = world_db["MAP_LENGTH"]
 346         fov = bytearray(b' ' * (length ** 2))
 347         for pos in range(length ** 2):
 348             if 'v' == chr(world_db["Things"][0]["fovmap"][pos]):
 349                 fov[pos] = world_db["MAP"][pos]
 350         for i in range(3):
 351             draw_visible_Things(fov, i)
 352         string = write_map(string, fov)
 353         mem = world_db["Things"][0]["T_MEMMAP"][:]
 354         for i in range(2):
 355             for mt in world_db["Things"][0]["T_MEMTHING"]:
 356                 consumable = world_db["ThingTypes"][mt[0]]["TT_CONSUMABLE"]
 357                 if (i == 0 and not consumable) or (i == 1 and consumable):
 358                     c = world_db["ThingTypes"][mt[0]]["TT_SYMBOL"]
 359                     mem[(mt[1] * length) + mt[2]] = ord(c)
 360         string = write_map(string, mem)
 361         atomic_write(io_db["path_worldstate"], string, delete=False)
 362         strong_write(io_db["file_out"], "WORLD_UPDATED\n")
 363         io_db["worldstate_updateable"] = False
 364
 365
 366 def replay_game():
 367     """Replay game from record file.
 368
 369     Use opts.replay as breakpoint turn to which to replay automatically before
 370     switching to manual input by non-meta commands in server input file
 371     triggering further reads of record file. Ensure opts.replay is at least 1.
 372     Run try_worldstate_update() before each interactive obey()/read_command().
 373     """
 374     if opts.replay < 1:
 375         opts.replay = 1
 376     print("Replay mode. Auto-replaying up to turn " + str(opts.replay) +
 377           " (if so late a turn is to be found).")
 378     if not os.access(io_db["path_record"], os.F_OK):
 379         raise SystemExit("No record file found to replay.")
 380     io_db["file_record"] = open(io_db["path_record"], "r")
 381     io_db["file_record"].prefix = "record file line "
 382     io_db["file_record"].line_n = 1
 383     while world_db["TURN"] < opts.replay:
 384         line = io_db["file_record"].readline()
 385         if "" == line:
 386             break
 387         obey(line.rstrip(), io_db["file_record"].prefix
 388              + str(io_db["file_record"].line_n))
 389         io_db["file_record"].line_n = io_db["file_record"].line_n + 1
 390     while True:
 391         try_worldstate_update()
 392         obey(read_command(), "in file", replay=True)
 393
 394
 395 def play_game():
 396     """Play game by server input file commands. Before, load save file found.
 397
 398     If no save file is found, a new world is generated from the commands in the
 399     world config plus a 'MAKE WORLD [current Unix timestamp]'. Record this
 400     command and all that follow via the server input file. Run
 401     try_worldstate_update() before each interactive obey()/read_command().
 402     """
 403     if os.access(io_db["path_save"], os.F_OK):
 404         obey_lines_in_file(io_db["path_save"], "save")
 405     else:
 406         if not os.access(io_db["path_worldconf"], os.F_OK):
 407             msg = "No world config file from which to start a new world."
 408             raise SystemExit(msg)
 409         obey_lines_in_file(io_db["path_worldconf"], "world config ",
 410                            do_record=True)
 411         obey("MAKE_WORLD " + str(int(time.time())), "in file", do_record=True)
 412     while True:
 413         try_worldstate_update()
 414         obey(read_command(), "in file", do_record=True)
 415
 416
 417 def make_map():
 418     """(Re-)make island map.
 419
 420     Let "~" represent water, "." land, "X" trees: Build island shape randomly,
 421     start with one land cell in the middle, then go into cycle of repeatedly
 422     selecting a random sea cell and transforming it into land if it is neighbor
 423     to land. The cycle ends when a land cell is due to be created at the map's
 424     border. Then put some trees on the map (TODO: more precise algorithm desc).
 425     """
 426
 427     def is_neighbor(coordinates, type):
 428         y = coordinates[0]
 429         x = coordinates[1]
 430         length = world_db["MAP_LENGTH"]
 431         ind = y % 2
 432         diag_west = x + (ind > 0)
 433         diag_east = x + (ind < (length - 1))
 434         pos = (y * length) + x
 435         if (y > 0 and diag_east
 436             and type == chr(world_db["MAP"][pos - length + ind])) \
 437            or (x < (length - 1)
 438                and type == chr(world_db["MAP"][pos + 1])) \
 439            or (y < (length - 1) and diag_east
 440                and type == chr(world_db["MAP"][pos + length + ind])) \
 441            or (y > 0 and diag_west
 442                and type == chr(world_db["MAP"][pos - length - (not ind)])) \
 443            or (x > 0
 444                and type == chr(world_db["MAP"][pos - 1])) \
 445            or (y < (length - 1) and diag_west
 446                and type == chr(world_db["MAP"][pos + length - (not ind)])):
 447             return True
 448         return False
 449
 450     world_db["MAP"] = bytearray(b'~' * (world_db["MAP_LENGTH"] ** 2))
 451     length = world_db["MAP_LENGTH"]
 452     add_half_width = (not (length % 2)) * int(length / 2)
 453     world_db["MAP"][int((length ** 2) / 2) + add_half_width] = ord(".")
 454     while (1):
 455         y = rand.next() % length
 456         x = rand.next() % length
 457         pos = (y * length) + x
 458         if "~" == chr(world_db["MAP"][pos]) and is_neighbor((y, x), "."):
 459             if y == 0 or y == (length - 1) or x == 0 or x == (length - 1):
 460                 break
 461             world_db["MAP"][pos] = ord(".")
 462     n_trees = int((length ** 2) / 16)
 463     i_trees = 0
 464     while (i_trees <= n_trees):
 465         single_allowed = rand.next() % 32
 466         y = rand.next() % length
 467         x = rand.next() % length
 468         pos = (y * length) + x
 469         if "." == chr(world_db["MAP"][pos]) \
 470                 and ((not single_allowed) or is_neighbor((y, x), "X")):
 471             world_db["MAP"][pos] = ord("X")
 472             i_trees += 1
 473     # This all-too-precise replica of the original C code misses iter_limit().
 474
 475
 476 def update_map_memory(t, age_map=True):
 477     """Update t's T_MEMMAP with what's in its FOV now,age its T_MEMMEPTHMAP."""
 478     def age_some_memdepthmap_on_nonfov_cells():
 479         # OUTSOURCED FOR PERFORMANCE REASONS TO libplomrogue.so:
 480         # ord_v = ord("v")
 481         # ord_0 = ord("0")
 482         # ord_9 = ord("9")
 483         # for pos in [pos for pos in range(world_db["MAP_LENGTH"] ** 2)
 484         #             if not ord_v == t["fovmap"][pos]
 485         #             if ord_0 <= t["T_MEMDEPTHMAP"][pos]
 486         #             if ord_9 > t["T_MEMDEPTHMAP"][pos]
 487         #             if not rand.next() % (2 **
 488         #                                   (t["T_MEMDEPTHMAP"][pos] - 48))]:
 489         #     t["T_MEMDEPTHMAP"][pos] += 1
 490         memdepthmap = c_pointer_to_bytearray(t["T_MEMDEPTHMAP"])
 491         fovmap = c_pointer_to_bytearray(t["fovmap"])
 492         libpr.age_some_memdepthmap_on_nonfov_cells(memdepthmap, fovmap)
 493     if not t["T_MEMMAP"]:
 494         t["T_MEMMAP"] = bytearray(b' ' * (world_db["MAP_LENGTH"] ** 2))
 495     if not t["T_MEMDEPTHMAP"]:
 496         t["T_MEMDEPTHMAP"] = bytearray(b' ' * (world_db["MAP_LENGTH"] ** 2))
 497     ord_v = ord("v")
 498     ord_0 = ord("0")
 499     ord_space = ord(" ")
 500     for pos in [pos for pos in range(world_db["MAP_LENGTH"] ** 2)
 501                 if ord_v == t["fovmap"][pos]]:
 502         t["T_MEMDEPTHMAP"][pos] = ord_0
 503         if ord_space == t["T_MEMMAP"][pos]:
 504             t["T_MEMMAP"][pos] = world_db["MAP"][pos]
 505     if age_map:
 506         age_some_memdepthmap_on_nonfov_cells()
 507     t["T_MEMTHING"] = [mt for mt in t["T_MEMTHING"]
 508                        if ord_v != t["fovmap"][(mt[1] * world_db["MAP_LENGTH"])
 509                                                + mt[2]]]
 510     for id in [id for id in world_db["Things"]
 511                if not world_db["Things"][id]["carried"]]:
 512         type = world_db["Things"][id]["T_TYPE"]
 513         if not world_db["ThingTypes"][type]["TT_LIFEPOINTS"]:
 514             y = world_db["Things"][id]["T_POSY"]
 515             x = world_db["Things"][id]["T_POSX"]
 516             if ord_v == t["fovmap"][(y * world_db["MAP_LENGTH"]) + x]:
 517                 t["T_MEMTHING"].append((type, y, x))
 518
 519
 520 def set_world_inactive():
 521     """Set world_db["WORLD_ACTIVE"] to 0 and remove worldstate file."""
 522     server_test()
 523     if os.access(io_db["path_worldstate"], os.F_OK):
 524         os.remove(io_db["path_worldstate"])
 525     world_db["WORLD_ACTIVE"] = 0
 526
 527
 528 def integer_test(val_string, min, max=None):
 529     """Return val_string if integer >= min & (if max set) <= max, else None."""
 530     try:
 531         val = int(val_string)
 532         if val < min or (max is not None and val > max):
 533             raise ValueError
 534         return val
 535     except ValueError:
 536         msg = "Ignoring: Please use integer >= " + str(min)
 537         if max is not None:
 538             msg += " and <= " + str(max)
 539         msg += "."
 540         print(msg)
 541         return None
 542
 543
 544 def setter(category, key, min, max=None):
 545     """Build setter for world_db([category + "s"][id])[key] to >=min/<=max."""
 546     if category is None:
 547         def f(val_string):
 548             val = integer_test(val_string, min, max)
 549             if None != val:
 550                 world_db[key] = val
 551     else:
 552         if category == "Thing":
 553             id_store = command_tid
 554             decorator = test_Thing_id
 555         elif category == "ThingType":
 556             id_store = command_ttid
 557             decorator = test_ThingType_id
 558         elif category == "ThingAction":
 559             id_store = command_taid
 560             decorator = test_ThingAction_id
 561
 562         @decorator
 563         def f(val_string):
 564             val = integer_test(val_string, min, max)
 565             if None != val:
 566                 world_db[category + "s"][id_store.id][key] = val
 567     return f
 568
 569
 570 def build_fov_map(t):
 571     """Build Thing's FOV map."""
 572     t["fovmap"] = bytearray(b'v' * (world_db["MAP_LENGTH"] ** 2))
 573     fovmap = c_pointer_to_bytearray(t["fovmap"])
 574     map = c_pointer_to_bytearray(world_db["MAP"])
 575     if libpr.build_fov_map(t["T_POSY"], t["T_POSX"], fovmap, map):
 576         raise RuntimeError("Malloc error in build_fov_Map().")
 577
 578
 579 def decrement_lifepoints(t):
 580     """Decrement t's lifepoints by 1, and if to zero, corpse it.
 581
 582     If t is the player avatar, only blank its fovmap, so that the client may
 583     still display memory data. On non-player things, erase fovmap and memory.
 584     Dying actors drop all their things.
 585     """
 586     t["T_LIFEPOINTS"] -= 1
 587     if 0 == t["T_LIFEPOINTS"]:
 588         for id in t["T_CARRIES"]:
 589             t["T_CARRIES"].remove(id)
 590             world_db["Things"][id]["T_POSY"] = t["T_POSY"]
 591             world_db["Things"][id]["T_POSX"] = t["T_POSX"]
 592             world_db["Things"][id]["carried"] = False
 593         t["T_TYPE"] = world_db["ThingTypes"][t["T_TYPE"]]["TT_CORPSE_ID"]
 594         if world_db["Things"][0] == t:
 595             t["fovmap"] = bytearray(b' ' * (world_db["MAP_LENGTH"] ** 2))
 596             strong_write(io_db["file_out"], "LOG You die.\n")
 597         else:
 598             t["fovmap"] = False
 599             t["T_MEMMAP"] = False
 600             t["T_MEMDEPTHMAP"] = False
 601             t["T_MEMTHING"] = []
 602
 603
 604 def mv_yx_in_dir_legal(dir, y, x):
 605     """Wrapper around libpr.mv_yx_in_dir_legal to simplify its use."""
 606     dir_c = dir.encode("ascii")[0]
 607     test = libpr.mv_yx_in_dir_legal_wrap(dir_c, y, x)
 608     if -1 == test:
 609         raise RuntimeError("Too much wrapping in mv_yx_in_dir_legal_wrap()!")
 610     return (test, libpr.result_y(), libpr.result_x())
 611
 612
 613 def actor_wait(t):
 614     """Make t do nothing (but loudly, if player avatar)."""
 615     if t == world_db["Things"][0]:
 616         strong_write(io_db["file_out"], "LOG You wait.\n")
 617
 618
 619 def actor_move(t):
 620     """If passable, move/collide(=attack) thing into T_ARGUMENT's direction."""
 621     passable = False
 622     move_result = mv_yx_in_dir_legal(chr(t["T_ARGUMENT"]),
 623                                      t["T_POSY"], t["T_POSX"])
 624     if 1 == move_result[0]:
 625         pos = (move_result[1] * world_db["MAP_LENGTH"]) + move_result[2]
 626         passable = "." == chr(world_db["MAP"][pos])
 627         hitted = [id for id in world_db["Things"]
 628                   if world_db["Things"][id] != t
 629                   if world_db["Things"][id]["T_LIFEPOINTS"]
 630                   if world_db["Things"][id]["T_POSY"] == move_result[1]
 631                   if world_db["Things"][id]["T_POSX"] == move_result[2]]
 632         if len(hitted):
 633             hit_id = hitted[0]
 634             if t == world_db["Things"][0]:
 635                 hitted_type = world_db["Things"][hit_id]["T_TYPE"]
 636                 hitted_name = world_db["ThingTypes"][hitted_type]["TT_NAME"]
 637                 strong_write(io_db["file_out"], "LOG You wound "
 638                                                 + hitted_name + ".\n")
 639             elif 0 == hit_id:
 640                 hitter_name = world_db["ThingTypes"][t["T_TYPE"]]["TT_NAME"]
 641                 strong_write(io_db["file_out"], "LOG " + hitter_name +
 642                                                 " wounds you.\n")
 643             decrement_lifepoints(world_db["Things"][hit_id])
 644             return
 645     dir = [dir for dir in directions_db
 646            if directions_db[dir] == chr(t["T_ARGUMENT"])][0]
 647     if passable:
 648         t["T_POSY"] = move_result[1]
 649         t["T_POSX"] = move_result[2]
 650         for id in t["T_CARRIES"]:
 651             world_db["Things"][id]["T_POSY"] = move_result[1]
 652             world_db["Things"][id]["T_POSX"] = move_result[2]
 653         build_fov_map(t)
 654         if t == world_db["Things"][0]:
 655             strong_write(io_db["file_out"], "LOG You move " + dir + ".\n")
 656     elif t == world_db["Things"][0]:
 657         strong_write(io_db["file_out"], "LOG You fail to move " + dir + ".\n")
 658
 659
 660 def actor_pick_up(t):
 661     """Make t pick up (topmost?) Thing from ground into inventory."""
 662     # Topmostness is actually not defined so far. Picks most nutritious Thing.
 663     ids = [id for id in world_db["Things"] if world_db["Things"][id] != t
 664            if not world_db["Things"][id]["carried"]
 665            if world_db["Things"][id]["T_POSY"] == t["T_POSY"]
 666            if world_db["Things"][id]["T_POSX"] == t["T_POSX"]]
 667     if len(ids):
 668         highest_id = ids[0]
 669         nutritious = 0
 670         for id in ids:
 671             type = world_db["Things"][id]["T_TYPE"]
 672             if world_db["ThingTypes"][type]["TT_CONSUMABLE"] > nutritious:
 673                 nutritious = world_db["ThingTypes"][type]["TT_CONSUMABLE"]
 674                 highest_id = id
 675         world_db["Things"][highest_id]["carried"] = True
 676         t["T_CARRIES"].append(highest_id)
 677         if t == world_db["Things"][0]:
 678             strong_write(io_db["file_out"], "LOG You pick up an object.\n")
 679     elif t == world_db["Things"][0]:
 680         err = "You try to pick up an object, but there is none."
 681         strong_write(io_db["file_out"], "LOG " + err + "\n")
 682
 683
 684 def actor_drop(t):
 685     """Make t rop Thing from inventory to ground indexed by T_ARGUMENT."""
 686     # TODO: Handle case where T_ARGUMENT matches nothing.
 687     if len(t["T_CARRIES"]):
 688         id = t["T_CARRIES"][t["T_ARGUMENT"]]
 689         t["T_CARRIES"].remove(id)
 690         world_db["Things"][id]["carried"] = False
 691         if t == world_db["Things"][0]:
 692             strong_write(io_db["file_out"], "LOG You drop an object.\n")
 693     elif t == world_db["Things"][0]:
 694         err = "You try to drop an object, but you own none."
 695         strong_write(io_db["file_out"], "LOG " + err + "\n")
 696
 697
 698 def actor_use(t):
 699     """Make t use (for now: consume) T_ARGUMENT-indexed Thing in inventory."""
 700     # TODO: Handle case where T_ARGUMENT matches nothing.
 701     if len(t["T_CARRIES"]):
 702         id = t["T_CARRIES"][t["T_ARGUMENT"]]
 703         type = world_db["Things"][id]["T_TYPE"]
 704         if world_db["ThingTypes"][type]["TT_CONSUMABLE"]:
 705             t["T_CARRIES"].remove(id)
 706             del world_db["Things"][id]
 707             t["T_SATIATION"] += world_db["ThingTypes"][type]["TT_CONSUMABLE"]
 708             if t == world_db["Things"][0]:
 709                 strong_write(io_db["file_out"],
 710                              "LOG You consume this object.\n")
 711         elif t == world_db["Things"][0]:
 712             strong_write(io_db["file_out"],
 713                          "LOG You try to use this object, but fail.\n")
 714     elif t == world_db["Things"][0]:
 715         strong_write(io_db["file_out"],
 716                      "LOG You try to use an object, but you own none.\n")
 717
 718
 719 def thingproliferation(t, prol_map):
 720     """To chance of 1/TT_PROLIFERATE, create t offspring in open neighbor cell.
 721
 722     Naturally only works with TT_PROLIFERATE > 0. The neighbor cell must be be
 723     marked '.' in prol_map. If there are several map cell candidates, one is
 724     selected randomly.
 725     """
 726     prolscore = world_db["ThingTypes"][t["T_TYPE"]]["TT_PROLIFERATE"]
 727     if prolscore and (1 == prolscore or 1 == (rand.next() % prolscore)):
 728         candidates = []
 729         for dir in [directions_db[key] for key in directions_db]:
 730             mv_result = mv_yx_in_dir_legal(dir, t["T_POSY"], t["T_POSX"])
 731             if mv_result[0] and  ord('.') == prol_map[mv_result[1]
 732                                                       * world_db["MAP_LENGTH"]
 733                                                       + mv_result[2]]:
 734                 candidates.append((mv_result[1], mv_result[2]))
 735         if len(candidates):
 736             i = rand.next() % len(candidates)
 737             id = id_setter(-1, "Things")
 738             newT = new_Thing(t["T_TYPE"], (candidates[i][0], candidates[i][1]))
 739             world_db["Things"][id] = newT
 740
 741
 742 def try_healing(t):
 743     """Grow t's HP to a 1/32 chance if < HP max, satiation > 0, and waiting.
 744
 745     On success, decrease satiation score by 32.
 746     """
 747     if t["T_SATIATION"] > 0 \
 748        and t["T_LIFEPOINTS"] < \
 749         world_db["ThingTypes"][t["T_TYPE"]]["TT_LIFEPOINTS"] \
 750        and 0 == (rand.next() % 31) \
 751        and t["T_COMMAND"] == [id for id in world_db["ThingActions"]
 752                               if world_db["ThingActions"][id]["TA_NAME"] ==
 753                               "wait"][0]:
 754         t["T_LIFEPOINTS"] += 1
 755         t["T_SATIATION"] -= 32
 756         if t == world_db["Things"][0]:
 757             strong_write(io_db["file_out"], "LOG You heal.\n")
 758
 759
 760 def hunger(t):
 761     """Decrement t's satiation,dependent on it trigger lifepoint dec chance."""
 762     if t["T_SATIATION"] > -32768:
 763         t["T_SATIATION"] -= 1
 764     testbase = t["T_SATIATION"] if t["T_SATIATION"] >= 0 else -t["T_SATIATION"]
 765     if not world_db["ThingTypes"][t["T_TYPE"]]["TT_LIFEPOINTS"]:
 766         raise RuntimeError("A thing that should not hunger is hungering.")
 767     stomach = int(32767 / world_db["ThingTypes"][t["T_TYPE"]]["TT_LIFEPOINTS"])
 768     if int(int(testbase / stomach) / ((rand.next() % stomach) + 1)):
 769         if t == world_db["Things"][0]:
 770             strong_write(io_db["file_out"], "LOG You suffer from hunger.\n")
 771         decrement_lifepoints(t)
 772
 773
 774 def get_dir_to_target(t, filter):
 775     """Try to set T_COMMAND/T_ARGUMENT for move to "filter"-determined target.
 776
 777     The path-wise nearest target is chosen, via the shortest available path.
 778     Target must not be t. On succcess, return positive value, else False.
 779     Filters:
 780     "a": Thing in FOV is below a certain distance, animate, but of ThingType
 781          that is not t's, and starts out weaker than t is; build path as
 782          avoiding things of t's ThingType
 783     "f": neighbor cell (not inhabited by any animate Thing) further away from
 784          animate Thing not further than x steps away and in FOV and of a
 785          ThingType that is not t's, and starts out stronger or as strong as t
 786          is currently; or (cornered), if no such flight cell, but Thing of
 787          above criteria is too near,1 a cell closer to it, or, if less near,
 788          just wait
 789     "c": Thing in memorized map is consumable
 790     "s": memory map cell with greatest-reachable degree of unexploredness
 791     """
 792
 793     def zero_score_map_where_char_on_memdepthmap(c):
 794         # OUTSOURCED FOR PERFORMANCE REASONS TO libplomrogue.so:
 795         # for i in [i for i in range(world_db["MAP_LENGTH"] ** 2)
 796         #           if t["T_MEMDEPTHMAP"][i] == mem_depth_c[0]]:
 797         #     set_map_score(i, 0)
 798         map = c_pointer_to_bytearray(t["T_MEMDEPTHMAP"])
 799         if libpr.zero_score_map_where_char_on_memdepthmap(c, map):
 800             raise RuntimeError("No score map allocated for "
 801                                "zero_score_map_where_char_on_memdepthmap().")
 802
 803     def set_map_score(pos, score):
 804         test = libpr.set_map_score(pos, score)
 805         if test:
 806             raise RuntimeError("No score map allocated for set_map_score().")
 807
 808     def get_map_score(pos):
 809         result = libpr.get_map_score(pos)
 810         if result < 0:
 811             raise RuntimeError("No score map allocated for get_map_score().")
 812         return result
 813
 814     def seeing_thing():
 815         if t["fovmap"] and ("a" == filter or "f" == filter):
 816             for id in world_db["Things"]:
 817                 Thing = world_db["Things"][id]
 818                 if Thing != t and Thing["T_LIFEPOINTS"] and \
 819                    t["T_TYPE"] != Thing["T_TYPE"] and \
 820                    'v' == chr(t["fovmap"][(Thing["T_POSY"]
 821                                           * world_db["MAP_LENGTH"])
 822                                           + Thing["T_POSX"]]):
 823                     ThingType = world_db["ThingTypes"][Thing["T_TYPE"]]
 824                     if ("f" == filter and ThingType["TT_LIFEPOINTS"] >=
 825                         t["T_LIFEPOINTS"]) \
 826                        or ("a" == filter and ThingType["TT_LIFEPOINTS"] <
 827                             t["T_LIFEPOINTS"]):
 828                         return True
 829         elif t["T_MEMMAP"] and "c" == filter:
 830             for mt in t["T_MEMTHING"]:
 831                 if ' ' != chr(t["T_MEMMAP"][(mt[1] * world_db["MAP_LENGTH"])
 832                                             + mt[2]]) \
 833                    and world_db["ThingTypes"][mt[0]]["TT_CONSUMABLE"]:
 834                     return True
 835         return False
 836
 837     def set_cells_passable_on_memmap_to_65534_on_scoremap():
 838         # OUTSOURCED FOR PERFORMANCE REASONS TO libplomrogue.so:
 839         # ord_dot = ord(".")
 840         # memmap = t["T_MEMMAP"]
 841         # for i in [i for i in range(world_db["MAP_LENGTH"] ** 2)
 842         #            if ord_dot == memmap[i]]:
 843         #     set_map_score(i, 65534) # i.e. 65535-1
 844         map = c_pointer_to_bytearray(t["T_MEMMAP"])
 845         if libpr.set_cells_passable_on_memmap_to_65534_on_scoremap(map):
 846             raise RuntimeError("No score map allocated for set_cells_passable"
 847                                "_on_memmap_to_65534_on_scoremap().")
 848
 849     def init_score_map():
 850         test = libpr.init_score_map()
 851         if test:
 852             raise RuntimeError("Malloc error in init_score_map().")
 853         ord_v = ord("v")
 854         ord_blank = ord(" ")
 855         set_cells_passable_on_memmap_to_65534_on_scoremap()
 856         if "a" == filter:
 857             for id in world_db["Things"]:
 858                 Thing = world_db["Things"][id]
 859                 pos = Thing["T_POSY"] * world_db["MAP_LENGTH"] \
 860                     + Thing["T_POSX"]
 861                 if t != Thing and Thing["T_LIFEPOINTS"] and \
 862                    t["T_TYPE"] != Thing["T_TYPE"] and \
 863                    ord_v == t["fovmap"][pos] and \
 864                    t["T_LIFEPOINTS"] > \
 865                    world_db["ThingTypes"][Thing["T_TYPE"]]["TT_LIFEPOINTS"]:
 866                     set_map_score(pos, 0)
 867                 elif t["T_TYPE"] == Thing["T_TYPE"]:
 868                     set_map_score(pos, 65535)
 869         elif "f" == filter:
 870             for id in [id for id in world_db["Things"]
 871                        if world_db["Things"][id]["T_LIFEPOINTS"]]:
 872                 Thing = world_db["Things"][id]
 873                 pos = Thing["T_POSY"] * world_db["MAP_LENGTH"] \
 874                     + Thing["T_POSX"]
 875                 if t["T_TYPE"] != Thing["T_TYPE"] and \
 876                    ord_v == t["fovmap"][pos] and \
 877                    t["T_LIFEPOINTS"] <= \
 878                    world_db["ThingTypes"][Thing["T_TYPE"]]["TT_LIFEPOINTS"]:
 879                     set_map_score(pos, 0)
 880         elif "c" == filter:
 881             for mt in [mt for mt in t["T_MEMTHING"]
 882                        if ord_blank != t["T_MEMMAP"][mt[1]
 883                                                      * world_db["MAP_LENGTH"]
 884                                                      + mt[2]]
 885                        if world_db["ThingTypes"][mt[0]]["TT_CONSUMABLE"]]:
 886                 set_map_score(mt[1] * world_db["MAP_LENGTH"] + mt[2], 0)
 887         elif "s" == filter:
 888             zero_score_map_where_char_on_memdepthmap(mem_depth_c[0])
 889
 890     def rand_target_dir(neighbors, cmp, dirs):
 891         candidates = []
 892         n_candidates = 0
 893         for i in range(len(dirs)):
 894             if cmp == neighbors[i]:
 895                 candidates.append(dirs[i])
 896                 n_candidates += 1
 897         return candidates[rand.next() % n_candidates] if n_candidates else 0
 898
 899     def get_neighbor_scores(dirs, eye_pos):
 900         scores = []
 901         if libpr.ready_neighbor_scores(eye_pos):
 902             raise RuntimeError("No score map allocated for " +
 903                                "ready_neighbor_scores.()")
 904         for i in range(len(dirs)):
 905             scores.append(libpr.get_neighbor_score(i))
 906         return scores
 907
 908     def get_dir_from_neighbors():
 909         dir_to_target = False
 910         dirs = "edcxsw"
 911         eye_pos = t["T_POSY"] * world_db["MAP_LENGTH"] + t["T_POSX"]
 912         neighbors = get_neighbor_scores(dirs, eye_pos)
 913         if "f" == filter:
 914             inhabited = [world_db["Things"][id]["T_POSY"]
 915                          * world_db["MAP_LENGTH"]
 916                          + world_db["Things"][id]["T_POSX"]
 917                          for id in world_db["Things"]
 918                          if world_db["Things"][id]["T_LIFEPOINTS"]]
 919             for i in range(len(dirs)):
 920                 mv_yx_in_dir_legal(dirs[i], t["T_POSY"], t["T_POSX"])
 921                 pos_cmp = libpr.result_y() * world_db["MAP_LENGTH"] \
 922                     + libpr.result_x()
 923                 for pos in [pos for pos in inhabited if pos == pos_cmp]:
 924                     neighbors[i] = 65535
 925                     break
 926         minmax_start = 0 if "f" == filter else 65535 - 1
 927         minmax_neighbor = minmax_start
 928         for i in range(len(dirs)):
 929             if ("f" == filter and get_map_score(eye_pos) < neighbors[i] and
 930                 minmax_neighbor < neighbors[i] and 65535 != neighbors[i]) \
 931                or ("f" != filter and minmax_neighbor > neighbors[i]):
 932                 minmax_neighbor = neighbors[i]
 933         if minmax_neighbor != minmax_start:
 934             dir_to_target = rand_target_dir(neighbors, minmax_neighbor, dirs)
 935         if "f" == filter:
 936             if not dir_to_target:
 937                 if 1 == get_map_score(eye_pos):
 938                     dir_to_target = rand_target_dir(neighbors, 0, dirs)
 939                 elif 3 >= get_map_score(eye_pos):
 940                     t["T_COMMAND"] = [id for id in world_db["ThingActions"]
 941                                       if
 942                                       world_db["ThingActions"][id]["TA_NAME"]
 943                                       == "wait"][0]
 944                     return 1
 945             elif dir_to_target and 3 < get_map_score(eye_pos):
 946                 dir_to_target = 0
 947         elif "a" == filter and 10 <= get_map_score(eye_pos):
 948             dir_to_target = 0
 949         return dir_to_target
 950
 951     dir_to_target = False
 952     mem_depth_c = b' '
 953     run_i = 9 + 1 if "s" == filter else 1
 954     while run_i and not dir_to_target and ("s" == filter or seeing_thing()):
 955         run_i -= 1
 956         init_score_map()
 957         mem_depth_c = b'9' if b' ' == mem_depth_c \
 958             else bytes([mem_depth_c[0] - 1])
 959         if libpr.dijkstra_map():
 960             raise RuntimeError("No score map allocated for dijkstra_map().")
 961         dir_to_target = get_dir_from_neighbors()
 962         libpr.free_score_map()
 963         if dir_to_target and str == type(dir_to_target):
 964             t["T_COMMAND"] = [id for id in world_db["ThingActions"]
 965                               if world_db["ThingActions"][id]["TA_NAME"]
 966                               == "move"][0]
 967             t["T_ARGUMENT"] = ord(dir_to_target)
 968     return dir_to_target
 969
 970
 971 def standing_on_consumable(t):
 972     """Return True/False whether t is standing on a consumable."""
 973     for id in [id for id in world_db["Things"] if world_db["Things"][id] != t
 974                if world_db["Things"][id]["T_POSY"] == t["T_POSY"]
 975                if world_db["Things"][id]["T_POSX"] == t["T_POSX"]
 976                if world_db["ThingTypes"][world_db["Things"][id]["T_TYPE"]]
 977                           ["TT_CONSUMABLE"]]:
 978         return True
 979     return False
 980
 981
 982 def get_inventory_slot_to_consume(t):
 983     """Return slot Id of strongest consumable in t's inventory, else -1."""
 984     cmp_consumability = 0
 985     selection = -1
 986     i = 0
 987     for id in t["T_CARRIES"]:
 988         type = world_db["Things"][id]["T_TYPE"]
 989         if world_db["ThingTypes"][type]["TT_CONSUMABLE"] > cmp_consumability:
 990             cmp_consumability = world_db["ThingTypes"][type]["TT_CONSUMABLE"]
 991             selection = i
 992         i += 1
 993     return selection
 994
 995
 996 def ai(t):
 997     """Determine next command/argment for actor t via AI algorithms.
 998
 999     AI will look for, and move towards, enemies (animate Things not of their
1000     own ThingType); if they see none, they will consume consumables in their
1001     inventory; if there are none, they will pick up what they stand on if they
1002     stand on consumables; if they stand on none, they will move towards the
1003     next consumable they see or remember on the map; if they see or remember
1004     none, they will explore parts of the map unseen since ever or for at least
1005     one turn; if there is nothing to explore, they will simply wait.
1006     """
1007     t["T_COMMAND"] = [id for id in world_db["ThingActions"]
1008                       if world_db["ThingActions"][id]["TA_NAME"] == "wait"][0]
1009     if not get_dir_to_target(t, "f"):
1010         sel = get_inventory_slot_to_consume(t)
1011         if -1 != sel:
1012             t["T_COMMAND"] = [id for id in world_db["ThingActions"]
1013                               if world_db["ThingActions"][id]["TA_NAME"]
1014                               == "use"][0]
1015             t["T_ARGUMENT"] = sel
1016         elif standing_on_consumable(t):
1017             t["T_COMMAND"] = [id for id in world_db["ThingActions"]
1018                               if world_db["ThingActions"][id]["TA_NAME"]
1019                               == "pick_up"][0]
1020         elif (not get_dir_to_target(t, "c")) and \
1021              (not get_dir_to_target(t, "a")):
1022             get_dir_to_target(t, "s")
1023
1024
1025 def turn_over():
1026     """Run game world and its inhabitants until new player input expected."""
1027     id = 0
1028     whilebreaker = False
1029     while world_db["Things"][0]["T_LIFEPOINTS"]:
1030         proliferable_map = world_db["MAP"][:]
1031         for id in [id for id in world_db["Things"]
1032                    if not world_db["Things"][id]["carried"]]:
1033             y = world_db["Things"][id]["T_POSY"]
1034             x = world_db["Things"][id]["T_POSX"]
1035             proliferable_map[y * world_db["MAP_LENGTH"] + x] = ord('X')
1036         for id in [id for id in world_db["Things"]]:  # Only what's from start!
1037             if not id in world_db["Things"] or \
1038                world_db["Things"][id]["carried"]:   # May have been consumed or
1039                 continue                            # picked up during turn …
1040             Thing = world_db["Things"][id]
1041             if Thing["T_LIFEPOINTS"]:
1042                 if not Thing["T_COMMAND"]:
1043                     update_map_memory(Thing)
1044                     if 0 == id:
1045                         whilebreaker = True
1046                         break
1047                     ai(Thing)
1048                 try_healing(Thing)
1049                 Thing["T_PROGRESS"] += 1
1050                 taid = [a for a in world_db["ThingActions"]
1051                         if a == Thing["T_COMMAND"]][0]
1052                 ThingAction = world_db["ThingActions"][taid]
1053                 if Thing["T_PROGRESS"] == ThingAction["TA_EFFORT"]:
1054                     eval("actor_" + ThingAction["TA_NAME"])(Thing)
1055                     Thing["T_COMMAND"] = 0
1056                     Thing["T_PROGRESS"] = 0
1057                 hunger(Thing)
1058             thingproliferation(Thing, proliferable_map)
1059         if whilebreaker:
1060             break
1061         world_db["TURN"] += 1
1062
1063
1064 def new_Thing(type, pos=(0, 0)):
1065     """Return Thing of type T_TYPE, with fovmap if alive and world active."""
1066     thing = {
1067         "T_LIFEPOINTS": world_db["ThingTypes"][type]["TT_LIFEPOINTS"],
1068         "T_ARGUMENT": 0,
1069         "T_PROGRESS": 0,
1070         "T_SATIATION": 0,
1071         "T_COMMAND": 0,
1072         "T_TYPE": type,
1073         "T_POSY": pos[0],
1074         "T_POSX": pos[1],
1075         "T_CARRIES": [],
1076         "carried": False,
1077         "T_MEMTHING": [],
1078         "T_MEMMAP": False,
1079         "T_MEMDEPTHMAP": False,
1080         "fovmap": False
1081     }
1082     if world_db["WORLD_ACTIVE"] and thing["T_LIFEPOINTS"]:
1083         build_fov_map(thing)
1084     return thing
1085
1086
1087 def id_setter(id, category, id_store=False, start_at_1=False):
1088     """Set ID of object of category to manipulate ID unused? Create new one.
1089     The ID is stored as id_store.id (if id_store is set). If the integer of the
1090     input is valid (if start_at_1, >= 0, else >= -1), but <0 or (if start_at_1)
1091     <1, calculate new ID: lowest unused ID >=0 or (if start_at_1) >= 1. None is
1092     always returned when no new object is created, else the new object's ID.
1093     """
1094     min = 0 if start_at_1 else -1
1095     if str == type(id):
1096         id = integer_test(id, min)
1097     if None != id:
1098         if id in world_db[category]:
1099             if id_store:
1100                 id_store.id = id
1101             return None
1102         else:
1103             if (start_at_1 and 0 == id) \
1104                or ((not start_at_1) and (id < 0)):
1105                 id = 0 if start_at_1 else -1
1106                 while 1:
1107                     id = id + 1
1108                     if id not in world_db[category]:
1109                         break
1110             if id_store:
1111                 id_store.id = id
1112     return id
1113
1114
1115 def command_ping():
1116     """Send PONG line to server output file."""
1117     strong_write(io_db["file_out"], "PONG\n")
1118
1119
1120 def command_quit():
1121     """Abort server process."""
1122     if None == opts.replay:
1123         if world_db["WORLD_ACTIVE"]:
1124             save_world()
1125         atomic_write(io_db["path_record"], io_db["record_chunk"], do_append=True)
1126     raise SystemExit("received QUIT command")
1127
1128
1129 def command_thingshere(str_y, str_x):
1130     """Write to out file list of Things known to player at coordinate y, x."""
1131     if world_db["WORLD_ACTIVE"]:
1132         y = integer_test(str_y, 0, 255)
1133         x = integer_test(str_x, 0, 255)
1134         length = world_db["MAP_LENGTH"]
1135         if None != y and None != x and y < length and x < length:
1136             pos = (y * world_db["MAP_LENGTH"]) + x
1137             strong_write(io_db["file_out"], "THINGS_HERE START\n")
1138             if "v" == chr(world_db["Things"][0]["fovmap"][pos]):
1139                 for id in world_db["Things"]:
1140                     if y == world_db["Things"][id]["T_POSY"] \
1141                        and x == world_db["Things"][id]["T_POSX"] \
1142                        and not world_db["Things"][id]["carried"]:
1143                         type = world_db["Things"][id]["T_TYPE"]
1144                         name = world_db["ThingTypes"][type]["TT_NAME"]
1145                         strong_write(io_db["file_out"], name + "\n")
1146             else:
1147                 for mt in world_db["Things"][0]["T_MEMTHING"]:
1148                     if y == mt[1] and x == mt[2]:
1149                         name = world_db["ThingTypes"][mt[0]]["TT_NAME"]
1150                         strong_write(io_db["file_out"], name + "\n")
1151             strong_write(io_db["file_out"], "THINGS_HERE END\n")
1152         else:
1153             print("Ignoring: Invalid map coordinates.")
1154     else:
1155         print("Ignoring: Command only works on existing worlds.")
1156
1157
1158 def play_commander(action, args=False):
1159     """Setter for player's T_COMMAND and T_ARGUMENT, then calling turn_over().
1160
1161     T_ARGUMENT is set to direction char if action=="wait",or 8-bit int if args.
1162     """
1163
1164     def set_command():
1165         id = [x for x in world_db["ThingActions"]
1166               if world_db["ThingActions"][x]["TA_NAME"] == action][0]
1167         world_db["Things"][0]["T_COMMAND"] = id
1168         turn_over()
1169
1170     def set_command_and_argument_int(str_arg):
1171         val = integer_test(str_arg, 0, 255)
1172         if None != val:
1173             world_db["Things"][0]["T_ARGUMENT"] = val
1174             set_command()
1175
1176     def set_command_and_argument_movestring(str_arg):
1177         if str_arg in directions_db:
1178             world_db["Things"][0]["T_ARGUMENT"] = ord(directions_db[str_arg])
1179             set_command()
1180         else:
1181             print("Ignoring: Argument must be valid direction string.")
1182
1183     if action == "move":
1184         return set_command_and_argument_movestring
1185     elif args:
1186         return set_command_and_argument_int
1187     else:
1188         return set_command
1189
1190
1191 def command_seedrandomness(seed_string):
1192     """Set rand seed to int(seed_string)."""
1193     val = integer_test(seed_string, 0, 4294967295)
1194     if None != val:
1195         rand.seed = val
1196
1197
1198 def command_makeworld(seed_string):
1199     """(Re-)build game world, i.e. map, things, to a new turn 1 from seed.
1200
1201     Seed rand with seed. Do more only with a "wait" ThingAction and
1202     world["PLAYER_TYPE"] matching ThingType of TT_START_NUMBER > 0. Then,
1203     world_db["Things"] emptied, call make_map() and set
1204     world_db["WORLD_ACTIVE"], world_db["TURN"] to 1. Build new Things
1205     according to ThingTypes' TT_START_NUMBERS, with Thing of ID 0 to ThingType
1206     of ID = world["PLAYER_TYPE"]. Place Things randomly, and actors not on each
1207     other. Init player's memory map. Write "NEW_WORLD" line to out file.
1208     """
1209
1210     def free_pos():
1211         i = 0
1212         while 1:
1213             err = "Space to put thing on too hard to find. Map too small?"
1214             while 1:
1215                 y = rand.next() % world_db["MAP_LENGTH"]
1216                 x = rand.next() % world_db["MAP_LENGTH"]
1217                 if "." == chr(world_db["MAP"][y * world_db["MAP_LENGTH"] + x]):
1218                     break
1219                 i += 1
1220                 if i == 65535:
1221                     raise SystemExit(err)
1222             # Replica of C code, wrongly ignores animatedness of new Thing.
1223             pos_clear = (0 == len([id for id in world_db["Things"]
1224                                    if world_db["Things"][id]["T_LIFEPOINTS"]
1225                                    if world_db["Things"][id]["T_POSY"] == y
1226                                    if world_db["Things"][id]["T_POSX"] == x]))
1227             if pos_clear:
1228                 break
1229         return (y, x)
1230
1231     val = integer_test(seed_string, 0, 4294967295)
1232     if None == val:
1233         return
1234     rand.seed = val
1235     player_will_be_generated = False
1236     playertype = world_db["PLAYER_TYPE"]
1237     for ThingType in world_db["ThingTypes"]:
1238         if playertype == ThingType:
1239             if 0 < world_db["ThingTypes"][ThingType]["TT_START_NUMBER"]:
1240                 player_will_be_generated = True
1241             break
1242     if not player_will_be_generated:
1243         print("Ignoring: No player type with start number >0 defined.")
1244         return
1245     wait_action = False
1246     for ThingAction in world_db["ThingActions"]:
1247         if "wait" == world_db["ThingActions"][ThingAction]["TA_NAME"]:
1248             wait_action = True
1249     if not wait_action:
1250         print("Ignoring beyond SEED_MAP: " +
1251               "No thing action with name 'wait' defined.")
1252         return
1253     world_db["Things"] = {}
1254     make_map()
1255     world_db["WORLD_ACTIVE"] = 1
1256     world_db["TURN"] = 1
1257     for i in range(world_db["ThingTypes"][playertype]["TT_START_NUMBER"]):
1258         id = id_setter(-1, "Things")
1259         world_db["Things"][id] = new_Thing(playertype, free_pos())
1260     update_map_memory(world_db["Things"][0])
1261     for type in world_db["ThingTypes"]:
1262         for i in range(world_db["ThingTypes"][type]["TT_START_NUMBER"]):
1263             if type != playertype:
1264                 id = id_setter(-1, "Things")
1265                 world_db["Things"][id] = new_Thing(type, free_pos())
1266     strong_write(io_db["file_out"], "NEW_WORLD\n")
1267
1268
1269 def command_maplength(maplength_string):
1270     """Redefine map length. Invalidate map, therefore lose all things on it."""
1271     val = integer_test(maplength_string, 1, 256)
1272     if None != val:
1273         world_db["MAP_LENGTH"] = val
1274         world_db["MAP"] = False
1275         set_world_inactive()
1276         world_db["Things"] = {}
1277         libpr.set_maplength(val)
1278
1279
1280 def command_worldactive(worldactive_string):
1281     """Toggle world_db["WORLD_ACTIVE"] if possible.
1282
1283     An active world can always be set inactive. An inactive world can only be
1284     set active with a "wait" ThingAction, and a player Thing (of ID 0), and a
1285     map. On activation, rebuild all Things' FOVs, and the player's map memory.
1286     """
1287     val = integer_test(worldactive_string, 0, 1)
1288     if val:
1289         if 0 != world_db["WORLD_ACTIVE"]:
1290             if 0 == val:
1291                 set_world_inactive()
1292             else:
1293                 print("World already active.")
1294         elif 0 == world_db["WORLD_ACTIVE"]:
1295             wait_exists = False
1296             for ThingAction in world_db["ThingActions"]:
1297                 if "wait" == world_db["ThingActions"][ThingAction]["TA_NAME"]:
1298                     wait_exists = True
1299                     break
1300             player_exists = False
1301             for Thing in world_db["Things"]:
1302                 if 0 == Thing:
1303                     player_exists = True
1304                     break
1305             if wait_exists and player_exists and world_db["MAP"]:
1306                 for id in world_db["Things"]:
1307                     if world_db["Things"][id]["T_LIFEPOINTS"]:
1308                         build_fov_map(world_db["Things"][id])
1309                         if 0 == id:
1310                             update_map_memory(world_db["Things"][id], False)
1311                 world_db["WORLD_ACTIVE"] = 1
1312             else:
1313                 print("Ignoring: Not all conditions for world activation met.")
1314
1315
1316 def test_for_id_maker(object, category):
1317     """Return decorator testing for object having "id" attribute."""
1318     def decorator(f):
1319         def helper(*args):
1320             if hasattr(object, "id"):
1321                 f(*args)
1322             else:
1323                 print("Ignoring: No " + category +
1324                       " defined to manipulate yet.")
1325         return helper
1326     return decorator
1327
1328
1329 def command_tid(id_string):
1330     """Set ID of Thing to manipulate. ID unused? Create new one.
1331
1332     Default new Thing's type to the first available ThingType, others: zero.
1333     """
1334     id = id_setter(id_string, "Things", command_tid)
1335     if None != id:
1336         if world_db["ThingTypes"] == {}:
1337             print("Ignoring: No ThingType to settle new Thing in.")
1338             return
1339         type = list(world_db["ThingTypes"].keys())[0]
1340         world_db["Things"][id] = new_Thing(type)
1341
1342
1343 test_Thing_id = test_for_id_maker(command_tid, "Thing")
1344
1345
1346 @test_Thing_id
1347 def command_tcommand(str_int):
1348     """Set T_COMMAND of selected Thing."""
1349     val = integer_test(str_int, 0)
1350     if None != val:
1351         if 0 == val or val in world_db["ThingActions"]:
1352             world_db["Things"][command_tid.id]["T_COMMAND"] = val
1353         else:
1354             print("Ignoring: ThingAction ID belongs to no known ThingAction.")
1355
1356
1357 @test_Thing_id
1358 def command_ttype(str_int):
1359     """Set T_TYPE of selected Thing."""
1360     val = integer_test(str_int, 0)
1361     if None != val:
1362         if val in world_db["ThingTypes"]:
1363             world_db["Things"][command_tid.id]["T_TYPE"] = val
1364         else:
1365             print("Ignoring: ThingType ID belongs to no known ThingType.")
1366
1367
1368 @test_Thing_id
1369 def command_tcarries(str_int):
1370     """Append int(str_int) to T_CARRIES of selected Thing.
1371
1372     The ID int(str_int) must not be of the selected Thing, and must belong to a
1373     Thing with unset "carried" flag. Its "carried" flag will be set on owning.
1374     """
1375     val = integer_test(str_int, 0)
1376     if None != val:
1377         if val == command_tid.id:
1378             print("Ignoring: Thing cannot carry itself.")
1379         elif val in world_db["Things"] \
1380                 and not world_db["Things"][val]["carried"]:
1381             world_db["Things"][command_tid.id]["T_CARRIES"].append(val)
1382             world_db["Things"][val]["carried"] = True
1383         else:
1384             print("Ignoring: Thing not available for carrying.")
1385     # Note that the whole carrying structure is different from the C version:
1386     # Carried-ness is marked by a "carried" flag, not by Things containing
1387     # Things internally.
1388
1389
1390 @test_Thing_id
1391 def command_tmemthing(str_t, str_y, str_x):
1392     """Add (int(str_t), int(str_y), int(str_x)) to selected Thing's T_MEMTHING.
1393
1394     The type must fit to an existing ThingType, and the position into the map.
1395     """
1396     type = integer_test(str_t, 0)
1397     posy = integer_test(str_y, 0, 255)
1398     posx = integer_test(str_x, 0, 255)
1399     if None != type and None != posy and None != posx:
1400         if type not in world_db["ThingTypes"] \
1401            or posy >= world_db["MAP_LENGTH"] or posx >= world_db["MAP_LENGTH"]:
1402             print("Ignoring: Illegal value for thing type or position.")
1403         else:
1404             memthing = (type, posy, posx)
1405             world_db["Things"][command_tid.id]["T_MEMTHING"].append(memthing)
1406
1407
1408 def setter_map(maptype):
1409     """Set (world or Thing's) map of maptype's int(str_int)-th line to mapline.
1410
1411     If no map of maptype exists yet, initialize it with ' ' bytes first.
1412     """
1413
1414     def valid_map_line(str_int, mapline):
1415         val = integer_test(str_int, 0, 255)
1416         if None != val:
1417             if val >= world_db["MAP_LENGTH"]:
1418                 print("Illegal value for map line number.")
1419             elif len(mapline) != world_db["MAP_LENGTH"]:
1420                 print("Map line length is unequal map width.")
1421             else:
1422                 return val
1423         return None
1424
1425     def nonThingMap_helper(str_int, mapline):
1426         val = valid_map_line(str_int, mapline)
1427         if None != val:
1428             length = world_db["MAP_LENGTH"]
1429             if not world_db["MAP"]:
1430                 map = bytearray(b' ' * (length ** 2))
1431             else:
1432                 map = world_db["MAP"]
1433             map[val * length:(val * length) + length] = mapline.encode()
1434             if not world_db["MAP"]:
1435                 world_db["MAP"] = map
1436
1437     @test_Thing_id
1438     def ThingMap_helper(str_int, mapline):
1439         val = valid_map_line(str_int, mapline)
1440         if None != val:
1441             length = world_db["MAP_LENGTH"]
1442             if not world_db["Things"][command_tid.id][maptype]:
1443                 map = bytearray(b' ' * (length ** 2))
1444             else:
1445                 map = world_db["Things"][command_tid.id][maptype]
1446             map[val * length:(val * length) + length] = mapline.encode()
1447             if not world_db["Things"][command_tid.id][maptype]:
1448                 world_db["Things"][command_tid.id][maptype] = map
1449
1450     return nonThingMap_helper if maptype == "MAP" else ThingMap_helper
1451
1452
1453
1454 def setter_tpos(axis):
1455     """Generate setter for T_POSX or  T_POSY of selected Thing.
1456
1457     If world is active, rebuilds animate things' fovmap, player's memory map.
1458     """
1459     @test_Thing_id
1460     def helper(str_int):
1461         val = integer_test(str_int, 0, 255)
1462         if None != val:
1463             if val < world_db["MAP_LENGTH"]:
1464                 world_db["Things"][command_tid.id]["T_POS" + axis] = val
1465                 if world_db["WORLD_ACTIVE"] \
1466                    and world_db["Things"][command_tid.id]["T_LIFEPOINTS"]:
1467                     build_fov_map(world_db["Things"][command_tid.id])
1468                     if 0 == command_tid.id:
1469                         update_map_memory(world_db["Things"][command_tid.id])
1470             else:
1471                 print("Ignoring: Position is outside of map.")
1472     return helper
1473
1474
1475 def command_ttid(id_string):
1476     """Set ID of ThingType to manipulate. ID unused? Create new one.
1477
1478     Default new ThingType's TT_SYMBOL to "?", TT_CORPSE_ID to self, others: 0.
1479     """
1480     id = id_setter(id_string, "ThingTypes", command_ttid)
1481     if None != id:
1482         world_db["ThingTypes"][id] = {
1483             "TT_NAME": "(none)",
1484             "TT_CONSUMABLE": 0,
1485             "TT_LIFEPOINTS": 0,
1486             "TT_PROLIFERATE": 0,
1487             "TT_START_NUMBER": 0,
1488             "TT_SYMBOL": "?",
1489             "TT_CORPSE_ID": id
1490         }
1491
1492
1493 test_ThingType_id = test_for_id_maker(command_ttid, "ThingType")
1494
1495
1496 @test_ThingType_id
1497 def command_ttname(name):
1498     """Set TT_NAME of selected ThingType."""
1499     world_db["ThingTypes"][command_ttid.id]["TT_NAME"] = name
1500
1501
1502 @test_ThingType_id
1503 def command_ttsymbol(char):
1504     """Set TT_SYMBOL of selected ThingType. """
1505     if 1 == len(char):
1506         world_db["ThingTypes"][command_ttid.id]["TT_SYMBOL"] = char
1507     else:
1508         print("Ignoring: Argument must be single character.")
1509
1510
1511 @test_ThingType_id
1512 def command_ttcorpseid(str_int):
1513     """Set TT_CORPSE_ID of selected ThingType."""
1514     val = integer_test(str_int, 0)
1515     if None != val:
1516         if val in world_db["ThingTypes"]:
1517             world_db["ThingTypes"][command_ttid.id]["TT_CORPSE_ID"] = val
1518         else:
1519             print("Ignoring: Corpse ID belongs to no known ThignType.")
1520
1521
1522 def command_taid(id_string):
1523     """Set ID of ThingAction to manipulate. ID unused? Create new one.
1524
1525     Default new ThingAction's TA_EFFORT to 1, its TA_NAME to "wait".
1526     """
1527     id = id_setter(id_string, "ThingActions", command_taid, True)
1528     if None != id:
1529         world_db["ThingActions"][id] = {
1530             "TA_EFFORT": 1,
1531             "TA_NAME": "wait"
1532         }
1533
1534
1535 test_ThingAction_id = test_for_id_maker(command_taid, "ThingAction")
1536
1537
1538 @test_ThingAction_id
1539 def command_taname(name):
1540     """Set TA_NAME of selected ThingAction.
1541
1542     The name must match a valid thing action function. If after the name
1543     setting no ThingAction with name "wait" remains, call set_world_inactive().
1544     """
1545     if name == "wait" or name == "move" or name == "use" or name == "drop" \
1546        or name == "pick_up":
1547         world_db["ThingActions"][command_taid.id]["TA_NAME"] = name
1548         if 1 == world_db["WORLD_ACTIVE"]:
1549             wait_defined = False
1550             for id in world_db["ThingActions"]:
1551                 if "wait" == world_db["ThingActions"][id]["TA_NAME"]:
1552                     wait_defined = True
1553                     break
1554             if not wait_defined:
1555                 set_world_inactive()
1556     else:
1557         print("Ignoring: Invalid action name.")
1558     # In contrast to the original,naming won't map a function to a ThingAction.
1559
1560
1561 def command_ai():
1562     """Call ai() on player Thing, then turn_over()."""
1563     ai(world_db["Things"][0])
1564     turn_over()
1565
1566
1567 """Commands database.
1568
1569 Map command start tokens to ([0]) number of expected command arguments, ([1])
1570 the command's meta-ness (i.e. is it to be written to the record file, is it to
1571 be ignored in replay mode if read from server input file), and ([2]) a function
1572 to be called on it.
1573 """
1574 commands_db = {
1575     "QUIT": (0, True, command_quit),
1576     "PING": (0, True, command_ping),
1577     "THINGS_HERE": (2, True, command_thingshere),
1578     "MAKE_WORLD": (1, False, command_makeworld),
1579     "SEED_RANDOMNESS": (1, False, command_seedrandomness),
1580     "TURN": (1, False, setter(None, "TURN", 0, 65535)),
1581     "PLAYER_TYPE": (1, False, setter(None, "PLAYER_TYPE", 0)),
1582     "MAP_LENGTH": (1, False, command_maplength),
1583     "WORLD_ACTIVE": (1, False, command_worldactive),
1584     "MAP": (2, False, setter_map("MAP")),
1585     "TA_ID": (1, False, command_taid),
1586     "TA_EFFORT": (1, False, setter("ThingAction", "TA_EFFORT", 0, 255)),
1587     "TA_NAME": (1, False, command_taname),
1588     "TT_ID": (1, False, command_ttid),
1589     "TT_NAME": (1, False, command_ttname),
1590     "TT_SYMBOL": (1, False, command_ttsymbol),
1591     "TT_CORPSE_ID": (1, False, command_ttcorpseid),
1592     "TT_CONSUMABLE": (1, False, setter("ThingType", "TT_CONSUMABLE",
1593                                        0, 65535)),
1594     "TT_START_NUMBER": (1, False, setter("ThingType", "TT_START_NUMBER",
1595                                          0, 255)),
1596     "TT_PROLIFERATE": (1, False, setter("ThingType", "TT_PROLIFERATE",
1597                                         0, 255)),
1598     "TT_LIFEPOINTS": (1, False, setter("ThingType", "TT_LIFEPOINTS", 0, 255)),
1599     "T_ID": (1, False, command_tid),
1600     "T_ARGUMENT": (1, False, setter("Thing", "T_ARGUMENT", 0, 255)),
1601     "T_PROGRESS": (1, False, setter("Thing", "T_PROGRESS", 0, 255)),
1602     "T_LIFEPOINTS": (1, False, setter("Thing", "T_LIFEPOINTS", 0, 255)),
1603     "T_SATIATION": (1, False, setter("Thing", "T_SATIATION", -32768, 32767)),
1604     "T_COMMAND": (1, False, command_tcommand),
1605     "T_TYPE": (1, False, command_ttype),
1606     "T_CARRIES": (1, False, command_tcarries),
1607     "T_MEMMAP": (2, False, setter_map("T_MEMMAP")),
1608     "T_MEMDEPTHMAP": (2, False, setter_map("T_MEMDEPTHMAP")),
1609     "T_MEMTHING": (3, False, command_tmemthing),
1610     "T_POSY": (1, False, setter_tpos("Y")),
1611     "T_POSX": (1, False, setter_tpos("X")),
1612     "wait": (0, False, play_commander("wait")),
1613     "move": (1, False, play_commander("move")),
1614     "pick_up": (0, False, play_commander("pick_up")),
1615     "drop": (1, False, play_commander("drop", True)),
1616     "use": (1, False, play_commander("use", True)),
1617     "ai": (0, False, command_ai)
1618 }
1619
1620
1621 """World state database. With sane default values. (Randomness is in rand.)"""
1622 world_db = {
1623     "TURN": 0,
1624     "MAP_LENGTH": 64,
1625     "PLAYER_TYPE": 0,
1626     "WORLD_ACTIVE": 0,
1627     "MAP": False,
1628     "ThingActions": {},
1629     "ThingTypes": {},
1630     "Things": {}
1631 }
1632
1633 """Mapping of direction names to internal direction chars."""
1634 directions_db = {"east": "d", "south-east": "c", "south-west": "x",
1635                  "west": "s", "north-west": "w", "north-east": "e"}
1636
1637 """File IO database."""
1638 io_db = {
1639     "path_save": "save",
1640     "path_record": "record_save",
1641     "path_worldconf": "confserver/world",
1642     "path_server": "server/",
1643     "path_in": "server/in",
1644     "path_out": "server/out",
1645     "path_worldstate": "server/worldstate",
1646     "tmp_suffix": "_tmp",
1647     "kicked_by_rival": False,
1648     "worldstate_updateable": False
1649 }
1650
1651
1652 try:
1653     libpr = prep_library()
1654     rand = RandomnessIO()
1655     opts = parse_command_line_arguments()
1656     if opts.savefile:
1657         io_db["path_save"] = opts.savefile
1658         io_db["path_record"] = "record_" + opts.savefile
1659     setup_server_io()
1660     if opts.verbose:
1661         io_db["verbose"] = True
1662     if None != opts.replay:
1663         replay_game()
1664     else:
1665         play_game()
1666 except SystemExit as exit:
1667     print("ABORTING: " + exit.args[0])
1668 except:
1669     print("SOMETHING WENT WRONG IN UNEXPECTED WAYS")
1670     raise
1671 finally:
1672     cleanup_server_io()