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
 479     def age_some_memdepthmap_on_nonfov_cells():
 480         # OUTSOURCED FOR PERFORMANCE REASONS TO libplomrogue.so:
 481         # ord_v = ord("v")
 482         # ord_0 = ord("0")
 483         # ord_9 = ord("9")
 484         # for pos in [pos for pos in range(world_db["MAP_LENGTH"] ** 2)
 485         #             if not ord_v == t["fovmap"][pos]
 486         #             if ord_0 <= t["T_MEMDEPTHMAP"][pos]
 487         #             if ord_9 > t["T_MEMDEPTHMAP"][pos]
 488         #             if not rand.next() % (2 **
 489         #                                   (t["T_MEMDEPTHMAP"][pos] - 48))]:
 490         #     t["T_MEMDEPTHMAP"][pos] += 1
 491         memdepthmap = c_pointer_to_bytearray(t["T_MEMDEPTHMAP"])
 492         fovmap = c_pointer_to_bytearray(t["fovmap"])
 493         libpr.age_some_memdepthmap_on_nonfov_cells(memdepthmap, fovmap)
 494
 495     if not t["T_MEMMAP"]:
 496         t["T_MEMMAP"] = bytearray(b' ' * (world_db["MAP_LENGTH"] ** 2))
 497     if not t["T_MEMDEPTHMAP"]:
 498         t["T_MEMDEPTHMAP"] = bytearray(b' ' * (world_db["MAP_LENGTH"] ** 2))
 499     ord_v = ord("v")
 500     ord_0 = ord("0")
 501     ord_space = ord(" ")
 502     for pos in [pos for pos in range(world_db["MAP_LENGTH"] ** 2)
 503                 if ord_v == t["fovmap"][pos]]:
 504         t["T_MEMDEPTHMAP"][pos] = ord_0
 505         if ord_space == t["T_MEMMAP"][pos]:
 506             t["T_MEMMAP"][pos] = world_db["MAP"][pos]
 507     if age_map:
 508         age_some_memdepthmap_on_nonfov_cells()
 509     t["T_MEMTHING"] = [mt for mt in t["T_MEMTHING"]
 510                        if ord_v != t["fovmap"][(mt[1] * world_db["MAP_LENGTH"])
 511                                                + mt[2]]]
 512     for id in [id for id in world_db["Things"]
 513                if not world_db["Things"][id]["carried"]]:
 514         type = world_db["Things"][id]["T_TYPE"]
 515         if not world_db["ThingTypes"][type]["TT_LIFEPOINTS"]:
 516             y = world_db["Things"][id]["T_POSY"]
 517             x = world_db["Things"][id]["T_POSX"]
 518             if ord_v == t["fovmap"][(y * world_db["MAP_LENGTH"]) + x]:
 519                 t["T_MEMTHING"].append((type, y, x))
 520
 521
 522 def set_world_inactive():
 523     """Set world_db["WORLD_ACTIVE"] to 0 and remove worldstate file."""
 524     server_test()
 525     if os.access(io_db["path_worldstate"], os.F_OK):
 526         os.remove(io_db["path_worldstate"])
 527     world_db["WORLD_ACTIVE"] = 0
 528
 529
 530 def integer_test(val_string, min, max=None):
 531     """Return val_string if integer >= min & (if max set) <= max, else None."""
 532     try:
 533         val = int(val_string)
 534         if val < min or (max is not None and val > max):
 535             raise ValueError
 536         return val
 537     except ValueError:
 538         msg = "Ignoring: Please use integer >= " + str(min)
 539         if max is not None:
 540             msg += " and <= " + str(max)
 541         msg += "."
 542         print(msg)
 543         return None
 544
 545
 546 def setter(category, key, min, max=None):
 547     """Build setter for world_db([category + "s"][id])[key] to >=min/<=max."""
 548     if category is None:
 549         def f(val_string):
 550             val = integer_test(val_string, min, max)
 551             if None != val:
 552                 world_db[key] = val
 553     else:
 554         if category == "Thing":
 555             id_store = command_tid
 556             decorator = test_Thing_id
 557         elif category == "ThingType":
 558             id_store = command_ttid
 559             decorator = test_ThingType_id
 560         elif category == "ThingAction":
 561             id_store = command_taid
 562             decorator = test_ThingAction_id
 563
 564         @decorator
 565         def f(val_string):
 566             val = integer_test(val_string, min, max)
 567             if None != val:
 568                 world_db[category + "s"][id_store.id][key] = val
 569     return f
 570
 571
 572 def build_fov_map(t):
 573     """Build Thing's FOV map."""
 574     t["fovmap"] = bytearray(b'v' * (world_db["MAP_LENGTH"] ** 2))
 575     fovmap = c_pointer_to_bytearray(t["fovmap"])
 576     map = c_pointer_to_bytearray(world_db["MAP"])
 577     if libpr.build_fov_map(t["T_POSY"], t["T_POSX"], fovmap, map):
 578         raise RuntimeError("Malloc error in build_fov_Map().")
 579
 580
 581 def decrement_lifepoints(t):
 582     """Decrement t's lifepoints by 1, and if to zero, corpse it.
 583
 584     If t is the player avatar, only blank its fovmap, so that the client may
 585     still display memory data. On non-player things, erase fovmap and memory.
 586     Dying actors drop all their things.
 587     """
 588     t["T_LIFEPOINTS"] -= 1
 589     if 0 == t["T_LIFEPOINTS"]:
 590         for id in t["T_CARRIES"]:
 591             t["T_CARRIES"].remove(id)
 592             world_db["Things"][id]["T_POSY"] = t["T_POSY"]
 593             world_db["Things"][id]["T_POSX"] = t["T_POSX"]
 594             world_db["Things"][id]["carried"] = False
 595         t["T_TYPE"] = world_db["ThingTypes"][t["T_TYPE"]]["TT_CORPSE_ID"]
 596         if world_db["Things"][0] == t:
 597             t["fovmap"] = bytearray(b' ' * (world_db["MAP_LENGTH"] ** 2))
 598             strong_write(io_db["file_out"], "LOG You die.\n")
 599         else:
 600             t["fovmap"] = False
 601             t["T_MEMMAP"] = False
 602             t["T_MEMDEPTHMAP"] = False
 603             t["T_MEMTHING"] = []
 604
 605
 606 def mv_yx_in_dir_legal(dir, y, x):
 607     """Wrapper around libpr.mv_yx_in_dir_legal to simplify its use."""
 608     dir_c = dir.encode("ascii")[0]
 609     test = libpr.mv_yx_in_dir_legal_wrap(dir_c, y, x)
 610     if -1 == test:
 611         raise RuntimeError("Too much wrapping in mv_yx_in_dir_legal_wrap()!")
 612     return (test, libpr.result_y(), libpr.result_x())
 613
 614
 615 def actor_wait(t):
 616     """Make t do nothing (but loudly, if player avatar)."""
 617     if t == world_db["Things"][0]:
 618         strong_write(io_db["file_out"], "LOG You wait.\n")
 619
 620
 621 def actor_move(t):
 622     """If passable, move/collide(=attack) thing into T_ARGUMENT's direction."""
 623     passable = False
 624     move_result = mv_yx_in_dir_legal(chr(t["T_ARGUMENT"]),
 625                                      t["T_POSY"], t["T_POSX"])
 626     if 1 == move_result[0]:
 627         pos = (move_result[1] * world_db["MAP_LENGTH"]) + move_result[2]
 628         passable = "." == chr(world_db["MAP"][pos])
 629         hitted = [id for id in world_db["Things"]
 630                   if world_db["Things"][id] != t
 631                   if world_db["Things"][id]["T_LIFEPOINTS"]
 632                   if world_db["Things"][id]["T_POSY"] == move_result[1]
 633                   if world_db["Things"][id]["T_POSX"] == move_result[2]]
 634         if len(hitted):
 635             hit_id = hitted[0]
 636             if t == world_db["Things"][0]:
 637                 hitted_type = world_db["Things"][hit_id]["T_TYPE"]
 638                 hitted_name = world_db["ThingTypes"][hitted_type]["TT_NAME"]
 639                 strong_write(io_db["file_out"], "LOG You wound "
 640                                                 + hitted_name + ".\n")
 641             elif 0 == hit_id:
 642                 hitter_name = world_db["ThingTypes"][t["T_TYPE"]]["TT_NAME"]
 643                 strong_write(io_db["file_out"], "LOG " + hitter_name +
 644                                                 " wounds you.\n")
 645             decrement_lifepoints(world_db["Things"][hit_id])
 646             return
 647     dir = [dir for dir in directions_db
 648            if directions_db[dir] == chr(t["T_ARGUMENT"])][0]
 649     if passable:
 650         t["T_POSY"] = move_result[1]
 651         t["T_POSX"] = move_result[2]
 652         for id in t["T_CARRIES"]:
 653             world_db["Things"][id]["T_POSY"] = move_result[1]
 654             world_db["Things"][id]["T_POSX"] = move_result[2]
 655         build_fov_map(t)
 656         if t == world_db["Things"][0]:
 657             strong_write(io_db["file_out"], "LOG You move " + dir + ".\n")
 658     elif t == world_db["Things"][0]:
 659         strong_write(io_db["file_out"], "LOG You fail to move " + dir + ".\n")
 660
 661
 662 def actor_pick_up(t):
 663     """Make t pick up (topmost?) Thing from ground into inventory."""
 664     # Topmostness is actually not defined so far. Picks most nutritious Thing.
 665     ids = [id for id in world_db["Things"] if world_db["Things"][id] != t
 666            if not world_db["Things"][id]["carried"]
 667            if world_db["Things"][id]["T_POSY"] == t["T_POSY"]
 668            if world_db["Things"][id]["T_POSX"] == t["T_POSX"]]
 669     if len(ids):
 670         highest_id = ids[0]
 671         nutritious = 0
 672         for id in ids:
 673             type = world_db["Things"][id]["T_TYPE"]
 674             if world_db["ThingTypes"][type]["TT_CONSUMABLE"] > nutritious:
 675                 nutritious = world_db["ThingTypes"][type]["TT_CONSUMABLE"]
 676                 highest_id = id
 677         world_db["Things"][highest_id]["carried"] = True
 678         t["T_CARRIES"].append(highest_id)
 679         if t == world_db["Things"][0]:
 680             strong_write(io_db["file_out"], "LOG You pick up an object.\n")
 681     elif t == world_db["Things"][0]:
 682         err = "You try to pick up an object, but there is none."
 683         strong_write(io_db["file_out"], "LOG " + err + "\n")
 684
 685
 686 def actor_drop(t):
 687     """Make t rop Thing from inventory to ground indexed by T_ARGUMENT."""
 688     # TODO: Handle case where T_ARGUMENT matches nothing.
 689     if len(t["T_CARRIES"]):
 690         id = t["T_CARRIES"][t["T_ARGUMENT"]]
 691         t["T_CARRIES"].remove(id)
 692         world_db["Things"][id]["carried"] = False
 693         if t == world_db["Things"][0]:
 694             strong_write(io_db["file_out"], "LOG You drop an object.\n")
 695     elif t == world_db["Things"][0]:
 696         err = "You try to drop an object, but you own none."
 697         strong_write(io_db["file_out"], "LOG " + err + "\n")
 698
 699
 700 def actor_use(t):
 701     """Make t use (for now: consume) T_ARGUMENT-indexed Thing in inventory."""
 702     # TODO: Handle case where T_ARGUMENT matches nothing.
 703     if len(t["T_CARRIES"]):
 704         id = t["T_CARRIES"][t["T_ARGUMENT"]]
 705         type = world_db["Things"][id]["T_TYPE"]
 706         if world_db["ThingTypes"][type]["TT_CONSUMABLE"]:
 707             t["T_CARRIES"].remove(id)
 708             del world_db["Things"][id]
 709             t["T_SATIATION"] += world_db["ThingTypes"][type]["TT_CONSUMABLE"]
 710             if t == world_db["Things"][0]:
 711                 strong_write(io_db["file_out"],
 712                              "LOG You consume this object.\n")
 713         elif t == world_db["Things"][0]:
 714             strong_write(io_db["file_out"],
 715                          "LOG You try to use this object, but fail.\n")
 716     elif t == world_db["Things"][0]:
 717         strong_write(io_db["file_out"],
 718                      "LOG You try to use an object, but you own none.\n")
 719
 720
 721 def thingproliferation(t, prol_map):
 722     """To chance of 1/TT_PROLIFERATE, create t offspring in open neighbor cell.
 723
 724     Naturally only works with TT_PROLIFERATE > 0. The neighbor cell must be be
 725     marked '.' in prol_map. If there are several map cell candidates, one is
 726     selected randomly.
 727     """
 728     prolscore = world_db["ThingTypes"][t["T_TYPE"]]["TT_PROLIFERATE"]
 729     if prolscore and (1 == prolscore or 1 == (rand.next() % prolscore)):
 730         candidates = []
 731         for dir in [directions_db[key] for key in directions_db]:
 732             mv_result = mv_yx_in_dir_legal(dir, t["T_POSY"], t["T_POSX"])
 733             if mv_result[0] and  ord('.') == prol_map[mv_result[1]
 734                                                       * world_db["MAP_LENGTH"]
 735                                                       + mv_result[2]]:
 736                 candidates.append((mv_result[1], mv_result[2]))
 737         if len(candidates):
 738             i = rand.next() % len(candidates)
 739             id = id_setter(-1, "Things")
 740             newT = new_Thing(t["T_TYPE"], (candidates[i][0], candidates[i][1]))
 741             world_db["Things"][id] = newT
 742
 743
 744 def try_healing(t):
 745     """Grow t's HP to a 1/32 chance if < HP max, satiation > 0, and waiting.
 746
 747     On success, decrease satiation score by 32.
 748     """
 749     if t["T_SATIATION"] > 0 \
 750        and t["T_LIFEPOINTS"] < \
 751         world_db["ThingTypes"][t["T_TYPE"]]["TT_LIFEPOINTS"] \
 752        and 0 == (rand.next() % 31) \
 753        and t["T_COMMAND"] == [id for id in world_db["ThingActions"]
 754                               if world_db["ThingActions"][id]["TA_NAME"] ==
 755                               "wait"][0]:
 756         t["T_LIFEPOINTS"] += 1
 757         t["T_SATIATION"] -= 32
 758         if t == world_db["Things"][0]:
 759             strong_write(io_db["file_out"], "LOG You heal.\n")
 760
 761
 762 def hunger(t):
 763     """Decrement t's satiation,dependent on it trigger lifepoint dec chance."""
 764     if t["T_SATIATION"] > -32768:
 765         t["T_SATIATION"] -= 1
 766     testbase = t["T_SATIATION"] if t["T_SATIATION"] >= 0 else -t["T_SATIATION"]
 767     if not world_db["ThingTypes"][t["T_TYPE"]]["TT_LIFEPOINTS"]:
 768         raise RuntimeError("A thing that should not hunger is hungering.")
 769     stomach = int(32767 / world_db["ThingTypes"][t["T_TYPE"]]["TT_LIFEPOINTS"])
 770     if int(int(testbase / stomach) / ((rand.next() % stomach) + 1)):
 771         if t == world_db["Things"][0]:
 772             strong_write(io_db["file_out"], "LOG You suffer from hunger.\n")
 773         decrement_lifepoints(t)
 774
 775
 776 def get_dir_to_target(t, filter):
 777     """Try to set T_COMMAND/T_ARGUMENT for move to "filter"-determined target.
 778
 779     The path-wise nearest target is chosen, via the shortest available path.
 780     Target must not be t. On succcess, return positive value, else False.
 781     Filters:
 782     "a": Thing in FOV is below a certain distance, animate, but of ThingType
 783          that is not t's, and starts out weaker than t is; build path as
 784          avoiding things of t's ThingType
 785     "f": neighbor cell (not inhabited by any animate Thing) further away from
 786          animate Thing not further than x steps away and in FOV and of a
 787          ThingType that is not t's, and starts out stronger or as strong as t
 788          is currently; or (cornered), if no such flight cell, but Thing of
 789          above criteria is too near,1 a cell closer to it, or, if less near,
 790          just wait
 791     "c": Thing in memorized map is consumable
 792     "s": memory map cell with greatest-reachable degree of unexploredness
 793     """
 794
 795     def zero_score_map_where_char_on_memdepthmap(c):
 796         # OUTSOURCED FOR PERFORMANCE REASONS TO libplomrogue.so:
 797         # for i in [i for i in range(world_db["MAP_LENGTH"] ** 2)
 798         #           if t["T_MEMDEPTHMAP"][i] == mem_depth_c[0]]:
 799         #     set_map_score(i, 0)
 800         map = c_pointer_to_bytearray(t["T_MEMDEPTHMAP"])
 801         if libpr.zero_score_map_where_char_on_memdepthmap(c, map):
 802             raise RuntimeError("No score map allocated for "
 803                                "zero_score_map_where_char_on_memdepthmap().")
 804
 805     def set_map_score(pos, score):
 806         test = libpr.set_map_score(pos, score)
 807         if test:
 808             raise RuntimeError("No score map allocated for set_map_score().")
 809
 810     def get_map_score(pos):
 811         result = libpr.get_map_score(pos)
 812         if result < 0:
 813             raise RuntimeError("No score map allocated for get_map_score().")
 814         return result
 815
 816     def seeing_thing():
 817         if t["fovmap"] and ("a" == filter or "f" == filter):
 818             for id in world_db["Things"]:
 819                 Thing = world_db["Things"][id]
 820                 if Thing != t and Thing["T_LIFEPOINTS"] and \
 821                    t["T_TYPE"] != Thing["T_TYPE"] and \
 822                    'v' == chr(t["fovmap"][(Thing["T_POSY"]
 823                                           * world_db["MAP_LENGTH"])
 824                                           + Thing["T_POSX"]]):
 825                     ThingType = world_db["ThingTypes"][Thing["T_TYPE"]]
 826                     if ("f" == filter and ThingType["TT_LIFEPOINTS"] >=
 827                         t["T_LIFEPOINTS"]) \
 828                        or ("a" == filter and ThingType["TT_LIFEPOINTS"] <
 829                             t["T_LIFEPOINTS"]):
 830                         return True
 831         elif t["T_MEMMAP"] and "c" == filter:
 832             for mt in t["T_MEMTHING"]:
 833                 if ' ' != chr(t["T_MEMMAP"][(mt[1] * world_db["MAP_LENGTH"])
 834                                             + mt[2]]) \
 835                    and world_db["ThingTypes"][mt[0]]["TT_CONSUMABLE"]:
 836                     return True
 837         return False
 838
 839     def set_cells_passable_on_memmap_to_65534_on_scoremap():
 840         # OUTSOURCED FOR PERFORMANCE REASONS TO libplomrogue.so:
 841         # ord_dot = ord(".")
 842         # memmap = t["T_MEMMAP"]
 843         # for i in [i for i in range(world_db["MAP_LENGTH"] ** 2)
 844         #            if ord_dot == memmap[i]]:
 845         #     set_map_score(i, 65534) # i.e. 65535-1
 846         map = c_pointer_to_bytearray(t["T_MEMMAP"])
 847         if libpr.set_cells_passable_on_memmap_to_65534_on_scoremap(map):
 848             raise RuntimeError("No score map allocated for set_cells_passable"
 849                                "_on_memmap_to_65534_on_scoremap().")
 850
 851     def init_score_map():
 852         test = libpr.init_score_map()
 853         if test:
 854             raise RuntimeError("Malloc error in init_score_map().")
 855         ord_v = ord("v")
 856         ord_blank = ord(" ")
 857         set_cells_passable_on_memmap_to_65534_on_scoremap()
 858         if "a" == filter:
 859             for id in world_db["Things"]:
 860                 Thing = world_db["Things"][id]
 861                 pos = Thing["T_POSY"] * world_db["MAP_LENGTH"] \
 862                     + Thing["T_POSX"]
 863                 if t != Thing and Thing["T_LIFEPOINTS"] and \
 864                    t["T_TYPE"] != Thing["T_TYPE"] and \
 865                    ord_v == t["fovmap"][pos] and \
 866                    t["T_LIFEPOINTS"] > \
 867                    world_db["ThingTypes"][Thing["T_TYPE"]]["TT_LIFEPOINTS"]:
 868                     set_map_score(pos, 0)
 869                 elif t["T_TYPE"] == Thing["T_TYPE"]:
 870                     set_map_score(pos, 65535)
 871         elif "f" == filter:
 872             for id in [id for id in world_db["Things"]
 873                        if world_db["Things"][id]["T_LIFEPOINTS"]]:
 874                 Thing = world_db["Things"][id]
 875                 pos = Thing["T_POSY"] * world_db["MAP_LENGTH"] \
 876                     + Thing["T_POSX"]
 877                 if t["T_TYPE"] != Thing["T_TYPE"] and \
 878                    ord_v == t["fovmap"][pos] and \
 879                    t["T_LIFEPOINTS"] <= \
 880                    world_db["ThingTypes"][Thing["T_TYPE"]]["TT_LIFEPOINTS"]:
 881                     set_map_score(pos, 0)
 882         elif "c" == filter:
 883             for mt in [mt for mt in t["T_MEMTHING"]
 884                        if ord_blank != t["T_MEMMAP"][mt[1]
 885                                                      * world_db["MAP_LENGTH"]
 886                                                      + mt[2]]
 887                        if world_db["ThingTypes"][mt[0]]["TT_CONSUMABLE"]]:
 888                 set_map_score(mt[1] * world_db["MAP_LENGTH"] + mt[2], 0)
 889         elif "s" == filter:
 890             zero_score_map_where_char_on_memdepthmap(mem_depth_c[0])
 891
 892     def rand_target_dir(neighbors, cmp, dirs):
 893         candidates = []
 894         n_candidates = 0
 895         for i in range(len(dirs)):
 896             if cmp == neighbors[i]:
 897                 candidates.append(dirs[i])
 898                 n_candidates += 1
 899         return candidates[rand.next() % n_candidates] if n_candidates else 0
 900
 901     def get_neighbor_scores(dirs, eye_pos):
 902         scores = []
 903         if libpr.ready_neighbor_scores(eye_pos):
 904             raise RuntimeError("No score map allocated for " +
 905                                "ready_neighbor_scores.()")
 906         for i in range(len(dirs)):
 907             scores.append(libpr.get_neighbor_score(i))
 908         return scores
 909
 910     def get_dir_from_neighbors():
 911         dir_to_target = False
 912         dirs = "edcxsw"
 913         eye_pos = t["T_POSY"] * world_db["MAP_LENGTH"] + t["T_POSX"]
 914         neighbors = get_neighbor_scores(dirs, eye_pos)
 915         if "f" == filter:
 916             inhabited = [world_db["Things"][id]["T_POSY"]
 917                          * world_db["MAP_LENGTH"]
 918                          + world_db["Things"][id]["T_POSX"]
 919                          for id in world_db["Things"]
 920                          if world_db["Things"][id]["T_LIFEPOINTS"]]
 921             for i in range(len(dirs)):
 922                 mv_yx_in_dir_legal(dirs[i], t["T_POSY"], t["T_POSX"])
 923                 pos_cmp = libpr.result_y() * world_db["MAP_LENGTH"] \
 924                     + libpr.result_x()
 925                 for pos in [pos for pos in inhabited if pos == pos_cmp]:
 926                     neighbors[i] = 65535
 927                     break
 928         minmax_start = 0 if "f" == filter else 65535 - 1
 929         minmax_neighbor = minmax_start
 930         for i in range(len(dirs)):
 931             if ("f" == filter and get_map_score(eye_pos) < neighbors[i] and
 932                 minmax_neighbor < neighbors[i] and 65535 != neighbors[i]) \
 933                or ("f" != filter and minmax_neighbor > neighbors[i]):
 934                 minmax_neighbor = neighbors[i]
 935         if minmax_neighbor != minmax_start:
 936             dir_to_target = rand_target_dir(neighbors, minmax_neighbor, dirs)
 937         if "f" == filter:
 938             if not dir_to_target:
 939                 if 1 == get_map_score(eye_pos):
 940                     dir_to_target = rand_target_dir(neighbors, 0, dirs)
 941                 elif 3 >= get_map_score(eye_pos):
 942                     t["T_COMMAND"] = [id for id in world_db["ThingActions"]
 943                                       if
 944                                       world_db["ThingActions"][id]["TA_NAME"]
 945                                       == "wait"][0]
 946                     return 1
 947             elif dir_to_target and 3 < get_map_score(eye_pos):
 948                 dir_to_target = 0
 949         elif "a" == filter and 10 <= get_map_score(eye_pos):
 950             dir_to_target = 0
 951         return dir_to_target
 952
 953     dir_to_target = False
 954     mem_depth_c = b' '
 955     run_i = 9 + 1 if "s" == filter else 1
 956     while run_i and not dir_to_target and ("s" == filter or seeing_thing()):
 957         run_i -= 1
 958         init_score_map()
 959         mem_depth_c = b'9' if b' ' == mem_depth_c \
 960             else bytes([mem_depth_c[0] - 1])
 961         if libpr.dijkstra_map():
 962             raise RuntimeError("No score map allocated for dijkstra_map().")
 963         dir_to_target = get_dir_from_neighbors()
 964         libpr.free_score_map()
 965         if dir_to_target and str == type(dir_to_target):
 966             t["T_COMMAND"] = [id for id in world_db["ThingActions"]
 967                               if world_db["ThingActions"][id]["TA_NAME"]
 968                               == "move"][0]
 969             t["T_ARGUMENT"] = ord(dir_to_target)
 970     return dir_to_target
 971
 972
 973 def standing_on_consumable(t):
 974     """Return True/False whether t is standing on a consumable."""
 975     for id in [id for id in world_db["Things"] if world_db["Things"][id] != t
 976                if world_db["Things"][id]["T_POSY"] == t["T_POSY"]
 977                if world_db["Things"][id]["T_POSX"] == t["T_POSX"]
 978                if world_db["ThingTypes"][world_db["Things"][id]["T_TYPE"]]
 979                           ["TT_CONSUMABLE"]]:
 980         return True
 981     return False
 982
 983
 984 def get_inventory_slot_to_consume(t):
 985     """Return slot Id of strongest consumable in t's inventory, else -1."""
 986     cmp_consumability = 0
 987     selection = -1
 988     i = 0
 989     for id in t["T_CARRIES"]:
 990         type = world_db["Things"][id]["T_TYPE"]
 991         if world_db["ThingTypes"][type]["TT_CONSUMABLE"] > cmp_consumability:
 992             cmp_consumability = world_db["ThingTypes"][type]["TT_CONSUMABLE"]
 993             selection = i
 994         i += 1
 995     return selection
 996
 997
 998 def ai(t):
 999     """Determine next command/argment for actor t via AI algorithms.
1000
1001     AI will look for, and move towards, enemies (animate Things not of their
1002     own ThingType); if they see none, they will consume consumables in their
1003     inventory; if there are none, they will pick up what they stand on if they
1004     stand on consumables; if they stand on none, they will move towards the
1005     next consumable they see or remember on the map; if they see or remember
1006     none, they will explore parts of the map unseen since ever or for at least
1007     one turn; if there is nothing to explore, they will simply wait.
1008     """
1009     t["T_COMMAND"] = [id for id in world_db["ThingActions"]
1010                       if world_db["ThingActions"][id]["TA_NAME"] == "wait"][0]
1011     if not get_dir_to_target(t, "f"):
1012         sel = get_inventory_slot_to_consume(t)
1013         if -1 != sel:
1014             t["T_COMMAND"] = [id for id in world_db["ThingActions"]
1015                               if world_db["ThingActions"][id]["TA_NAME"]
1016                               == "use"][0]
1017             t["T_ARGUMENT"] = sel
1018         elif standing_on_consumable(t):
1019             t["T_COMMAND"] = [id for id in world_db["ThingActions"]
1020                               if world_db["ThingActions"][id]["TA_NAME"]
1021                               == "pick_up"][0]
1022         elif (not get_dir_to_target(t, "c")) and \
1023              (not get_dir_to_target(t, "a")):
1024             get_dir_to_target(t, "s")
1025
1026
1027 def turn_over():
1028     """Run game world and its inhabitants until new player input expected."""
1029     id = 0
1030     whilebreaker = False
1031     while world_db["Things"][0]["T_LIFEPOINTS"]:
1032         proliferable_map = world_db["MAP"][:]
1033         for id in [id for id in world_db["Things"]
1034                    if not world_db["Things"][id]["carried"]]:
1035             y = world_db["Things"][id]["T_POSY"]
1036             x = world_db["Things"][id]["T_POSX"]
1037             proliferable_map[y * world_db["MAP_LENGTH"] + x] = ord('X')
1038         for id in [id for id in world_db["Things"]]:  # Only what's from start!
1039             if not id in world_db["Things"] or \
1040                world_db["Things"][id]["carried"]:   # May have been consumed or
1041                 continue                            # picked up during turn …
1042             Thing = world_db["Things"][id]
1043             if Thing["T_LIFEPOINTS"]:
1044                 if not Thing["T_COMMAND"]:
1045                     update_map_memory(Thing)
1046                     if 0 == id:
1047                         whilebreaker = True
1048                         break
1049                     ai(Thing)
1050                 try_healing(Thing)
1051                 Thing["T_PROGRESS"] += 1
1052                 taid = [a for a in world_db["ThingActions"]
1053                         if a == Thing["T_COMMAND"]][0]
1054                 ThingAction = world_db["ThingActions"][taid]
1055                 if Thing["T_PROGRESS"] == ThingAction["TA_EFFORT"]:
1056                     eval("actor_" + ThingAction["TA_NAME"])(Thing)
1057                     Thing["T_COMMAND"] = 0
1058                     Thing["T_PROGRESS"] = 0
1059                 hunger(Thing)
1060             thingproliferation(Thing, proliferable_map)
1061         if whilebreaker:
1062             break
1063         world_db["TURN"] += 1
1064
1065
1066 def new_Thing(type, pos=(0, 0)):
1067     """Return Thing of type T_TYPE, with fovmap if alive and world active."""
1068     thing = {
1069         "T_LIFEPOINTS": world_db["ThingTypes"][type]["TT_LIFEPOINTS"],
1070         "T_ARGUMENT": 0,
1071         "T_PROGRESS": 0,
1072         "T_SATIATION": 0,
1073         "T_COMMAND": 0,
1074         "T_TYPE": type,
1075         "T_POSY": pos[0],
1076         "T_POSX": pos[1],
1077         "T_CARRIES": [],
1078         "carried": False,
1079         "T_MEMTHING": [],
1080         "T_MEMMAP": False,
1081         "T_MEMDEPTHMAP": False,
1082         "fovmap": False
1083     }
1084     if world_db["WORLD_ACTIVE"] and thing["T_LIFEPOINTS"]:
1085         build_fov_map(thing)
1086     return thing
1087
1088
1089 def id_setter(id, category, id_store=False, start_at_1=False):
1090     """Set ID of object of category to manipulate ID unused? Create new one.
1091     The ID is stored as id_store.id (if id_store is set). If the integer of the
1092     input is valid (if start_at_1, >= 0, else >= -1), but <0 or (if start_at_1)
1093     <1, calculate new ID: lowest unused ID >=0 or (if start_at_1) >= 1. None is
1094     always returned when no new object is created, else the new object's ID.
1095     """
1096     min = 0 if start_at_1 else -1
1097     if str == type(id):
1098         id = integer_test(id, min)
1099     if None != id:
1100         if id in world_db[category]:
1101             if id_store:
1102                 id_store.id = id
1103             return None
1104         else:
1105             if (start_at_1 and 0 == id) \
1106                or ((not start_at_1) and (id < 0)):
1107                 id = 0 if start_at_1 else -1
1108                 while 1:
1109                     id = id + 1
1110                     if id not in world_db[category]:
1111                         break
1112             if id_store:
1113                 id_store.id = id
1114     return id
1115
1116
1117 def command_ping():
1118     """Send PONG line to server output file."""
1119     strong_write(io_db["file_out"], "PONG\n")
1120
1121
1122 def command_quit():
1123     """Abort server process."""
1124     if None == opts.replay:
1125         if world_db["WORLD_ACTIVE"]:
1126             save_world()
1127         atomic_write(io_db["path_record"], io_db["record_chunk"], do_append=True)
1128     raise SystemExit("received QUIT command")
1129
1130
1131 def command_thingshere(str_y, str_x):
1132     """Write to out file list of Things known to player at coordinate y, x."""
1133     if world_db["WORLD_ACTIVE"]:
1134         y = integer_test(str_y, 0, 255)
1135         x = integer_test(str_x, 0, 255)
1136         length = world_db["MAP_LENGTH"]
1137         if None != y and None != x and y < length and x < length:
1138             pos = (y * world_db["MAP_LENGTH"]) + x
1139             strong_write(io_db["file_out"], "THINGS_HERE START\n")
1140             if "v" == chr(world_db["Things"][0]["fovmap"][pos]):
1141                 for id in world_db["Things"]:
1142                     if y == world_db["Things"][id]["T_POSY"] \
1143                        and x == world_db["Things"][id]["T_POSX"] \
1144                        and not world_db["Things"][id]["carried"]:
1145                         type = world_db["Things"][id]["T_TYPE"]
1146                         name = world_db["ThingTypes"][type]["TT_NAME"]
1147                         strong_write(io_db["file_out"], name + "\n")
1148             else:
1149                 for mt in world_db["Things"][0]["T_MEMTHING"]:
1150                     if y == mt[1] and x == mt[2]:
1151                         name = world_db["ThingTypes"][mt[0]]["TT_NAME"]
1152                         strong_write(io_db["file_out"], name + "\n")
1153             strong_write(io_db["file_out"], "THINGS_HERE END\n")
1154         else:
1155             print("Ignoring: Invalid map coordinates.")
1156     else:
1157         print("Ignoring: Command only works on existing worlds.")
1158
1159
1160 def play_commander(action, args=False):
1161     """Setter for player's T_COMMAND and T_ARGUMENT, then calling turn_over().
1162
1163     T_ARGUMENT is set to direction char if action=="wait",or 8-bit int if args.
1164     """
1165
1166     def set_command():
1167         id = [x for x in world_db["ThingActions"]
1168               if world_db["ThingActions"][x]["TA_NAME"] == action][0]
1169         world_db["Things"][0]["T_COMMAND"] = id
1170         turn_over()
1171
1172     def set_command_and_argument_int(str_arg):
1173         val = integer_test(str_arg, 0, 255)
1174         if None != val:
1175             world_db["Things"][0]["T_ARGUMENT"] = val
1176             set_command()
1177
1178     def set_command_and_argument_movestring(str_arg):
1179         if str_arg in directions_db:
1180             world_db["Things"][0]["T_ARGUMENT"] = ord(directions_db[str_arg])
1181             set_command()
1182         else:
1183             print("Ignoring: Argument must be valid direction string.")
1184
1185     if action == "move":
1186         return set_command_and_argument_movestring
1187     elif args:
1188         return set_command_and_argument_int
1189     else:
1190         return set_command
1191
1192
1193 def command_seedrandomness(seed_string):
1194     """Set rand seed to int(seed_string)."""
1195     val = integer_test(seed_string, 0, 4294967295)
1196     if None != val:
1197         rand.seed = val
1198
1199
1200 def command_makeworld(seed_string):
1201     """(Re-)build game world, i.e. map, things, to a new turn 1 from seed.
1202
1203     Seed rand with seed. Do more only with a "wait" ThingAction and
1204     world["PLAYER_TYPE"] matching ThingType of TT_START_NUMBER > 0. Then,
1205     world_db["Things"] emptied, call make_map() and set
1206     world_db["WORLD_ACTIVE"], world_db["TURN"] to 1. Build new Things
1207     according to ThingTypes' TT_START_NUMBERS, with Thing of ID 0 to ThingType
1208     of ID = world["PLAYER_TYPE"]. Place Things randomly, and actors not on each
1209     other. Init player's memory map. Write "NEW_WORLD" line to out file.
1210     """
1211
1212     def free_pos():
1213         i = 0
1214         while 1:
1215             err = "Space to put thing on too hard to find. Map too small?"
1216             while 1:
1217                 y = rand.next() % world_db["MAP_LENGTH"]
1218                 x = rand.next() % world_db["MAP_LENGTH"]
1219                 if "." == chr(world_db["MAP"][y * world_db["MAP_LENGTH"] + x]):
1220                     break
1221                 i += 1
1222                 if i == 65535:
1223                     raise SystemExit(err)
1224             # Replica of C code, wrongly ignores animatedness of new Thing.
1225             pos_clear = (0 == len([id for id in world_db["Things"]
1226                                    if world_db["Things"][id]["T_LIFEPOINTS"]
1227                                    if world_db["Things"][id]["T_POSY"] == y
1228                                    if world_db["Things"][id]["T_POSX"] == x]))
1229             if pos_clear:
1230                 break
1231         return (y, x)
1232
1233     val = integer_test(seed_string, 0, 4294967295)
1234     if None == val:
1235         return
1236     rand.seed = val
1237     player_will_be_generated = False
1238     playertype = world_db["PLAYER_TYPE"]
1239     for ThingType in world_db["ThingTypes"]:
1240         if playertype == ThingType:
1241             if 0 < world_db["ThingTypes"][ThingType]["TT_START_NUMBER"]:
1242                 player_will_be_generated = True
1243             break
1244     if not player_will_be_generated:
1245         print("Ignoring: No player type with start number >0 defined.")
1246         return
1247     wait_action = False
1248     for ThingAction in world_db["ThingActions"]:
1249         if "wait" == world_db["ThingActions"][ThingAction]["TA_NAME"]:
1250             wait_action = True
1251     if not wait_action:
1252         print("Ignoring beyond SEED_MAP: " +
1253               "No thing action with name 'wait' defined.")
1254         return
1255     world_db["Things"] = {}
1256     make_map()
1257     world_db["WORLD_ACTIVE"] = 1
1258     world_db["TURN"] = 1
1259     for i in range(world_db["ThingTypes"][playertype]["TT_START_NUMBER"]):
1260         id = id_setter(-1, "Things")
1261         world_db["Things"][id] = new_Thing(playertype, free_pos())
1262     if not world_db["Things"][0]["fovmap"]:
1263         empty_fovmap = bytearray(b" " * world_db["MAP_LENGTH"] ** 2)
1264         world_db["Things"][0]["fovmap"] = empty_fovmap
1265     update_map_memory(world_db["Things"][0])
1266     for type in world_db["ThingTypes"]:
1267         for i in range(world_db["ThingTypes"][type]["TT_START_NUMBER"]):
1268             if type != playertype:
1269                 id = id_setter(-1, "Things")
1270                 world_db["Things"][id] = new_Thing(type, free_pos())
1271     strong_write(io_db["file_out"], "NEW_WORLD\n")
1272
1273
1274 def command_maplength(maplength_string):
1275     """Redefine map length. Invalidate map, therefore lose all things on it."""
1276     val = integer_test(maplength_string, 1, 256)
1277     if None != val:
1278         world_db["MAP_LENGTH"] = val
1279         world_db["MAP"] = False
1280         set_world_inactive()
1281         world_db["Things"] = {}
1282         libpr.set_maplength(val)
1283
1284
1285 def command_worldactive(worldactive_string):
1286     """Toggle world_db["WORLD_ACTIVE"] if possible.
1287
1288     An active world can always be set inactive. An inactive world can only be
1289     set active with a "wait" ThingAction, and a player Thing (of ID 0), and a
1290     map. On activation, rebuild all Things' FOVs, and the player's map memory.
1291     """
1292     val = integer_test(worldactive_string, 0, 1)
1293     if val:
1294         if 0 != world_db["WORLD_ACTIVE"]:
1295             if 0 == val:
1296                 set_world_inactive()
1297             else:
1298                 print("World already active.")
1299         elif 0 == world_db["WORLD_ACTIVE"]:
1300             wait_exists = False
1301             for ThingAction in world_db["ThingActions"]:
1302                 if "wait" == world_db["ThingActions"][ThingAction]["TA_NAME"]:
1303                     wait_exists = True
1304                     break
1305             player_exists = False
1306             for Thing in world_db["Things"]:
1307                 if 0 == Thing:
1308                     player_exists = True
1309                     break
1310             if wait_exists and player_exists and world_db["MAP"]:
1311                 for id in world_db["Things"]:
1312                     if world_db["Things"][id]["T_LIFEPOINTS"]:
1313                         build_fov_map(world_db["Things"][id])
1314                         if 0 == id:
1315                             update_map_memory(world_db["Things"][id], False)
1316                 if not world_db["Things"][0]["T_LIFEPOINTS"]:
1317                     empty_fovmap = bytearray(b" " * world_db["MAP_LENGTH"] ** 2)
1318                     world_db["Things"][0]["fovmap"] = empty_fovmap
1319                 world_db["WORLD_ACTIVE"] = 1
1320             else:
1321                 print("Ignoring: Not all conditions for world activation met.")
1322
1323
1324 def test_for_id_maker(object, category):
1325     """Return decorator testing for object having "id" attribute."""
1326     def decorator(f):
1327         def helper(*args):
1328             if hasattr(object, "id"):
1329                 f(*args)
1330             else:
1331                 print("Ignoring: No " + category +
1332                       " defined to manipulate yet.")
1333         return helper
1334     return decorator
1335
1336
1337 def command_tid(id_string):
1338     """Set ID of Thing to manipulate. ID unused? Create new one.
1339
1340     Default new Thing's type to the first available ThingType, others: zero.
1341     """
1342     id = id_setter(id_string, "Things", command_tid)
1343     if None != id:
1344         if world_db["ThingTypes"] == {}:
1345             print("Ignoring: No ThingType to settle new Thing in.")
1346             return
1347         type = list(world_db["ThingTypes"].keys())[0]
1348         world_db["Things"][id] = new_Thing(type)
1349
1350
1351 test_Thing_id = test_for_id_maker(command_tid, "Thing")
1352
1353
1354 @test_Thing_id
1355 def command_tcommand(str_int):
1356     """Set T_COMMAND of selected Thing."""
1357     val = integer_test(str_int, 0)
1358     if None != val:
1359         if 0 == val or val in world_db["ThingActions"]:
1360             world_db["Things"][command_tid.id]["T_COMMAND"] = val
1361         else:
1362             print("Ignoring: ThingAction ID belongs to no known ThingAction.")
1363
1364
1365 @test_Thing_id
1366 def command_ttype(str_int):
1367     """Set T_TYPE of selected Thing."""
1368     val = integer_test(str_int, 0)
1369     if None != val:
1370         if val in world_db["ThingTypes"]:
1371             world_db["Things"][command_tid.id]["T_TYPE"] = val
1372         else:
1373             print("Ignoring: ThingType ID belongs to no known ThingType.")
1374
1375
1376 @test_Thing_id
1377 def command_tcarries(str_int):
1378     """Append int(str_int) to T_CARRIES of selected Thing.
1379
1380     The ID int(str_int) must not be of the selected Thing, and must belong to a
1381     Thing with unset "carried" flag. Its "carried" flag will be set on owning.
1382     """
1383     val = integer_test(str_int, 0)
1384     if None != val:
1385         if val == command_tid.id:
1386             print("Ignoring: Thing cannot carry itself.")
1387         elif val in world_db["Things"] \
1388                 and not world_db["Things"][val]["carried"]:
1389             world_db["Things"][command_tid.id]["T_CARRIES"].append(val)
1390             world_db["Things"][val]["carried"] = True
1391         else:
1392             print("Ignoring: Thing not available for carrying.")
1393     # Note that the whole carrying structure is different from the C version:
1394     # Carried-ness is marked by a "carried" flag, not by Things containing
1395     # Things internally.
1396
1397
1398 @test_Thing_id
1399 def command_tmemthing(str_t, str_y, str_x):
1400     """Add (int(str_t), int(str_y), int(str_x)) to selected Thing's T_MEMTHING.
1401
1402     The type must fit to an existing ThingType, and the position into the map.
1403     """
1404     type = integer_test(str_t, 0)
1405     posy = integer_test(str_y, 0, 255)
1406     posx = integer_test(str_x, 0, 255)
1407     if None != type and None != posy and None != posx:
1408         if type not in world_db["ThingTypes"] \
1409            or posy >= world_db["MAP_LENGTH"] or posx >= world_db["MAP_LENGTH"]:
1410             print("Ignoring: Illegal value for thing type or position.")
1411         else:
1412             memthing = (type, posy, posx)
1413             world_db["Things"][command_tid.id]["T_MEMTHING"].append(memthing)
1414
1415
1416 def setter_map(maptype):
1417     """Set (world or Thing's) map of maptype's int(str_int)-th line to mapline.
1418
1419     If no map of maptype exists yet, initialize it with ' ' bytes first.
1420     """
1421
1422     def valid_map_line(str_int, mapline):
1423         val = integer_test(str_int, 0, 255)
1424         if None != val:
1425             if val >= world_db["MAP_LENGTH"]:
1426                 print("Illegal value for map line number.")
1427             elif len(mapline) != world_db["MAP_LENGTH"]:
1428                 print("Map line length is unequal map width.")
1429             else:
1430                 return val
1431         return None
1432
1433     def nonThingMap_helper(str_int, mapline):
1434         val = valid_map_line(str_int, mapline)
1435         if None != val:
1436             length = world_db["MAP_LENGTH"]
1437             if not world_db["MAP"]:
1438                 map = bytearray(b' ' * (length ** 2))
1439             else:
1440                 map = world_db["MAP"]
1441             map[val * length:(val * length) + length] = mapline.encode()
1442             if not world_db["MAP"]:
1443                 world_db["MAP"] = map
1444
1445     @test_Thing_id
1446     def ThingMap_helper(str_int, mapline):
1447         val = valid_map_line(str_int, mapline)
1448         if None != val:
1449             length = world_db["MAP_LENGTH"]
1450             if not world_db["Things"][command_tid.id][maptype]:
1451                 map = bytearray(b' ' * (length ** 2))
1452             else:
1453                 map = world_db["Things"][command_tid.id][maptype]
1454             map[val * length:(val * length) + length] = mapline.encode()
1455             if not world_db["Things"][command_tid.id][maptype]:
1456                 world_db["Things"][command_tid.id][maptype] = map
1457
1458     return nonThingMap_helper if maptype == "MAP" else ThingMap_helper
1459
1460
1461
1462 def setter_tpos(axis):
1463     """Generate setter for T_POSX or  T_POSY of selected Thing.
1464
1465     If world is active, rebuilds animate things' fovmap, player's memory map.
1466     """
1467     @test_Thing_id
1468     def helper(str_int):
1469         val = integer_test(str_int, 0, 255)
1470         if None != val:
1471             if val < world_db["MAP_LENGTH"]:
1472                 world_db["Things"][command_tid.id]["T_POS" + axis] = val
1473                 if world_db["WORLD_ACTIVE"] \
1474                    and world_db["Things"][command_tid.id]["T_LIFEPOINTS"]:
1475                     build_fov_map(world_db["Things"][command_tid.id])
1476                     if 0 == command_tid.id:
1477                         update_map_memory(world_db["Things"][command_tid.id])
1478             else:
1479                 print("Ignoring: Position is outside of map.")
1480     return helper
1481
1482
1483 def command_ttid(id_string):
1484     """Set ID of ThingType to manipulate. ID unused? Create new one.
1485
1486     Default new ThingType's TT_SYMBOL to "?", TT_CORPSE_ID to self, others: 0.
1487     """
1488     id = id_setter(id_string, "ThingTypes", command_ttid)
1489     if None != id:
1490         world_db["ThingTypes"][id] = {
1491             "TT_NAME": "(none)",
1492             "TT_CONSUMABLE": 0,
1493             "TT_LIFEPOINTS": 0,
1494             "TT_PROLIFERATE": 0,
1495             "TT_START_NUMBER": 0,
1496             "TT_SYMBOL": "?",
1497             "TT_CORPSE_ID": id
1498         }
1499
1500
1501 test_ThingType_id = test_for_id_maker(command_ttid, "ThingType")
1502
1503
1504 @test_ThingType_id
1505 def command_ttname(name):
1506     """Set TT_NAME of selected ThingType."""
1507     world_db["ThingTypes"][command_ttid.id]["TT_NAME"] = name
1508
1509
1510 @test_ThingType_id
1511 def command_ttsymbol(char):
1512     """Set TT_SYMBOL of selected ThingType. """
1513     if 1 == len(char):
1514         world_db["ThingTypes"][command_ttid.id]["TT_SYMBOL"] = char
1515     else:
1516         print("Ignoring: Argument must be single character.")
1517
1518
1519 @test_ThingType_id
1520 def command_ttcorpseid(str_int):
1521     """Set TT_CORPSE_ID of selected ThingType."""
1522     val = integer_test(str_int, 0)
1523     if None != val:
1524         if val in world_db["ThingTypes"]:
1525             world_db["ThingTypes"][command_ttid.id]["TT_CORPSE_ID"] = val
1526         else:
1527             print("Ignoring: Corpse ID belongs to no known ThignType.")
1528
1529
1530 def command_taid(id_string):
1531     """Set ID of ThingAction to manipulate. ID unused? Create new one.
1532
1533     Default new ThingAction's TA_EFFORT to 1, its TA_NAME to "wait".
1534     """
1535     id = id_setter(id_string, "ThingActions", command_taid, True)
1536     if None != id:
1537         world_db["ThingActions"][id] = {
1538             "TA_EFFORT": 1,
1539             "TA_NAME": "wait"
1540         }
1541
1542
1543 test_ThingAction_id = test_for_id_maker(command_taid, "ThingAction")
1544
1545
1546 @test_ThingAction_id
1547 def command_taname(name):
1548     """Set TA_NAME of selected ThingAction.
1549
1550     The name must match a valid thing action function. If after the name
1551     setting no ThingAction with name "wait" remains, call set_world_inactive().
1552     """
1553     if name == "wait" or name == "move" or name == "use" or name == "drop" \
1554        or name == "pick_up":
1555         world_db["ThingActions"][command_taid.id]["TA_NAME"] = name
1556         if 1 == world_db["WORLD_ACTIVE"]:
1557             wait_defined = False
1558             for id in world_db["ThingActions"]:
1559                 if "wait" == world_db["ThingActions"][id]["TA_NAME"]:
1560                     wait_defined = True
1561                     break
1562             if not wait_defined:
1563                 set_world_inactive()
1564     else:
1565         print("Ignoring: Invalid action name.")
1566     # In contrast to the original,naming won't map a function to a ThingAction.
1567
1568
1569 def command_ai():
1570     """Call ai() on player Thing, then turn_over()."""
1571     ai(world_db["Things"][0])
1572     turn_over()
1573
1574
1575 """Commands database.
1576
1577 Map command start tokens to ([0]) number of expected command arguments, ([1])
1578 the command's meta-ness (i.e. is it to be written to the record file, is it to
1579 be ignored in replay mode if read from server input file), and ([2]) a function
1580 to be called on it.
1581 """
1582 commands_db = {
1583     "QUIT": (0, True, command_quit),
1584     "PING": (0, True, command_ping),
1585     "THINGS_HERE": (2, True, command_thingshere),
1586     "MAKE_WORLD": (1, False, command_makeworld),
1587     "SEED_RANDOMNESS": (1, False, command_seedrandomness),
1588     "TURN": (1, False, setter(None, "TURN", 0, 65535)),
1589     "PLAYER_TYPE": (1, False, setter(None, "PLAYER_TYPE", 0)),
1590     "MAP_LENGTH": (1, False, command_maplength),
1591     "WORLD_ACTIVE": (1, False, command_worldactive),
1592     "MAP": (2, False, setter_map("MAP")),
1593     "TA_ID": (1, False, command_taid),
1594     "TA_EFFORT": (1, False, setter("ThingAction", "TA_EFFORT", 0, 255)),
1595     "TA_NAME": (1, False, command_taname),
1596     "TT_ID": (1, False, command_ttid),
1597     "TT_NAME": (1, False, command_ttname),
1598     "TT_SYMBOL": (1, False, command_ttsymbol),
1599     "TT_CORPSE_ID": (1, False, command_ttcorpseid),
1600     "TT_CONSUMABLE": (1, False, setter("ThingType", "TT_CONSUMABLE",
1601                                        0, 65535)),
1602     "TT_START_NUMBER": (1, False, setter("ThingType", "TT_START_NUMBER",
1603                                          0, 255)),
1604     "TT_PROLIFERATE": (1, False, setter("ThingType", "TT_PROLIFERATE",
1605                                         0, 255)),
1606     "TT_LIFEPOINTS": (1, False, setter("ThingType", "TT_LIFEPOINTS", 0, 255)),
1607     "T_ID": (1, False, command_tid),
1608     "T_ARGUMENT": (1, False, setter("Thing", "T_ARGUMENT", 0, 255)),
1609     "T_PROGRESS": (1, False, setter("Thing", "T_PROGRESS", 0, 255)),
1610     "T_LIFEPOINTS": (1, False, setter("Thing", "T_LIFEPOINTS", 0, 255)),
1611     "T_SATIATION": (1, False, setter("Thing", "T_SATIATION", -32768, 32767)),
1612     "T_COMMAND": (1, False, command_tcommand),
1613     "T_TYPE": (1, False, command_ttype),
1614     "T_CARRIES": (1, False, command_tcarries),
1615     "T_MEMMAP": (2, False, setter_map("T_MEMMAP")),
1616     "T_MEMDEPTHMAP": (2, False, setter_map("T_MEMDEPTHMAP")),
1617     "T_MEMTHING": (3, False, command_tmemthing),
1618     "T_POSY": (1, False, setter_tpos("Y")),
1619     "T_POSX": (1, False, setter_tpos("X")),
1620     "wait": (0, False, play_commander("wait")),
1621     "move": (1, False, play_commander("move")),
1622     "pick_up": (0, False, play_commander("pick_up")),
1623     "drop": (1, False, play_commander("drop", True)),
1624     "use": (1, False, play_commander("use", True)),
1625     "ai": (0, False, command_ai)
1626 }
1627 # TODO: Unhandled cases: (Un-)killing animates (esp. player!) with T_LIFEPOINTS.
1628
1629
1630 """World state database. With sane default values. (Randomness is in rand.)"""
1631 world_db = {
1632     "TURN": 0,
1633     "MAP_LENGTH": 64,
1634     "PLAYER_TYPE": 0,
1635     "WORLD_ACTIVE": 0,
1636     "MAP": False,
1637     "ThingActions": {},
1638     "ThingTypes": {},
1639     "Things": {}
1640 }
1641
1642 """Mapping of direction names to internal direction chars."""
1643 directions_db = {"east": "d", "south-east": "c", "south-west": "x",
1644                  "west": "s", "north-west": "w", "north-east": "e"}
1645
1646 """File IO database."""
1647 io_db = {
1648     "path_save": "save",
1649     "path_record": "record_save",
1650     "path_worldconf": "confserver/world",
1651     "path_server": "server/",
1652     "path_in": "server/in",
1653     "path_out": "server/out",
1654     "path_worldstate": "server/worldstate",
1655     "tmp_suffix": "_tmp",
1656     "kicked_by_rival": False,
1657     "worldstate_updateable": False
1658 }
1659
1660
1661 try:
1662     libpr = prep_library()
1663     rand = RandomnessIO()
1664     opts = parse_command_line_arguments()
1665     if opts.savefile:
1666         io_db["path_save"] = opts.savefile
1667         io_db["path_record"] = "record_" + opts.savefile
1668     setup_server_io()
1669     if opts.verbose:
1670         io_db["verbose"] = True
1671     if None != opts.replay:
1672         replay_game()
1673     else:
1674         play_game()
1675 except SystemExit as exit:
1676     print("ABORTING: " + exit.args[0])
1677 except:
1678     print("SOMETHING WENT WRONG IN UNEXPECTED WAYS")
1679     raise
1680 finally:
1681     cleanup_server_io()