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 log_help():
 582     """Send quick usage info to log."""
 583     strong_write(io_db["file_out"], "LOG See README file for help.\n")
 584
 585
 586 def decrement_lifepoints(t):
 587     """Decrement t's lifepoints by 1, and if to zero, corpse it.
 588
 589     If t is the player avatar, only blank its fovmap, so that the client may
 590     still display memory data. On non-player things, erase fovmap and memory.
 591     Dying actors drop all their things.
 592     """
 593     t["T_LIFEPOINTS"] -= 1
 594     if 0 == t["T_LIFEPOINTS"]:
 595         for id in t["T_CARRIES"]:
 596             t["T_CARRIES"].remove(id)
 597             world_db["Things"][id]["T_POSY"] = t["T_POSY"]
 598             world_db["Things"][id]["T_POSX"] = t["T_POSX"]
 599             world_db["Things"][id]["carried"] = False
 600         t["T_TYPE"] = world_db["ThingTypes"][t["T_TYPE"]]["TT_CORPSE_ID"]
 601         if world_db["Things"][0] == t:
 602             t["fovmap"] = bytearray(b' ' * (world_db["MAP_LENGTH"] ** 2))
 603             strong_write(io_db["file_out"], "LOG You die.\n")
 604             strong_write(io_db["file_out"],
 605                          "LOG See README on how to start over.\n")
 606         else:
 607             t["fovmap"] = False
 608             t["T_MEMMAP"] = False
 609             t["T_MEMDEPTHMAP"] = False
 610             t["T_MEMTHING"] = []
 611
 612
 613 def mv_yx_in_dir_legal(dir, y, x):
 614     """Wrapper around libpr.mv_yx_in_dir_legal to simplify its use."""
 615     dir_c = dir.encode("ascii")[0]
 616     test = libpr.mv_yx_in_dir_legal_wrap(dir_c, y, x)
 617     if -1 == test:
 618         raise RuntimeError("Too much wrapping in mv_yx_in_dir_legal_wrap()!")
 619     return (test, libpr.result_y(), libpr.result_x())
 620
 621
 622 def actor_wait(t):
 623     """Make t do nothing (but loudly, if player avatar)."""
 624     if t == world_db["Things"][0]:
 625         strong_write(io_db["file_out"], "LOG You wait.\n")
 626
 627
 628 def actor_move(t):
 629     """If passable, move/collide(=attack) thing into T_ARGUMENT's direction."""
 630     passable = False
 631     move_result = mv_yx_in_dir_legal(chr(t["T_ARGUMENT"]),
 632                                      t["T_POSY"], t["T_POSX"])
 633     if 1 == move_result[0]:
 634         pos = (move_result[1] * world_db["MAP_LENGTH"]) + move_result[2]
 635         passable = "." == chr(world_db["MAP"][pos])
 636         hitted = [id for id in world_db["Things"]
 637                   if world_db["Things"][id] != t
 638                   if world_db["Things"][id]["T_LIFEPOINTS"]
 639                   if world_db["Things"][id]["T_POSY"] == move_result[1]
 640                   if world_db["Things"][id]["T_POSX"] == move_result[2]]
 641         if len(hitted):
 642             hit_id = hitted[0]
 643             if t == world_db["Things"][0]:
 644                 hitted_type = world_db["Things"][hit_id]["T_TYPE"]
 645                 hitted_name = world_db["ThingTypes"][hitted_type]["TT_NAME"]
 646                 strong_write(io_db["file_out"], "LOG You wound "
 647                                                 + hitted_name + ".\n")
 648             elif 0 == hit_id:
 649                 hitter_name = world_db["ThingTypes"][t["T_TYPE"]]["TT_NAME"]
 650                 strong_write(io_db["file_out"], "LOG " + hitter_name +
 651                                                 " wounds you.\n")
 652             decrement_lifepoints(world_db["Things"][hit_id])
 653             return
 654     dir = [dir for dir in directions_db
 655            if directions_db[dir] == chr(t["T_ARGUMENT"])][0]
 656     if passable:
 657         t["T_POSY"] = move_result[1]
 658         t["T_POSX"] = move_result[2]
 659         for id in t["T_CARRIES"]:
 660             world_db["Things"][id]["T_POSY"] = move_result[1]
 661             world_db["Things"][id]["T_POSX"] = move_result[2]
 662         build_fov_map(t)
 663         if t == world_db["Things"][0]:
 664             strong_write(io_db["file_out"], "LOG You move " + dir + ".\n")
 665     elif t == world_db["Things"][0]:
 666         strong_write(io_db["file_out"], "LOG You fail to move " + dir + ".\n")
 667
 668
 669 def actor_pick_up(t):
 670     """Make t pick up (topmost?) Thing from ground into inventory."""
 671     # Topmostness is actually not defined so far. Picks most nutritious Thing.
 672     ids = [id for id in world_db["Things"] if world_db["Things"][id] != t
 673            if not world_db["Things"][id]["carried"]
 674            if world_db["Things"][id]["T_POSY"] == t["T_POSY"]
 675            if world_db["Things"][id]["T_POSX"] == t["T_POSX"]]
 676     if len(ids):
 677         highest_id = ids[0]
 678         nutritious = 0
 679         for id in ids:
 680             type = world_db["Things"][id]["T_TYPE"]
 681             if world_db["ThingTypes"][type]["TT_CONSUMABLE"] > nutritious:
 682                 nutritious = world_db["ThingTypes"][type]["TT_CONSUMABLE"]
 683                 highest_id = id
 684         world_db["Things"][highest_id]["carried"] = True
 685         t["T_CARRIES"].append(highest_id)
 686         if t == world_db["Things"][0]:
 687             strong_write(io_db["file_out"], "LOG You pick up an object.\n")
 688     elif t == world_db["Things"][0]:
 689         err = "You try to pick up an object, but there is none."
 690         strong_write(io_db["file_out"], "LOG " + err + "\n")
 691
 692
 693 def actor_drop(t):
 694     """Make t rop Thing from inventory to ground indexed by T_ARGUMENT."""
 695     # TODO: Handle case where T_ARGUMENT matches nothing.
 696     if len(t["T_CARRIES"]):
 697         id = t["T_CARRIES"][t["T_ARGUMENT"]]
 698         t["T_CARRIES"].remove(id)
 699         world_db["Things"][id]["carried"] = False
 700         if t == world_db["Things"][0]:
 701             strong_write(io_db["file_out"], "LOG You drop an object.\n")
 702     elif t == world_db["Things"][0]:
 703         err = "You try to drop an object, but you own none."
 704         strong_write(io_db["file_out"], "LOG " + err + "\n")
 705
 706
 707 def actor_use(t):
 708     """Make t use (for now: consume) T_ARGUMENT-indexed Thing in inventory."""
 709     # TODO: Handle case where T_ARGUMENT matches nothing.
 710     if len(t["T_CARRIES"]):
 711         id = t["T_CARRIES"][t["T_ARGUMENT"]]
 712         type = world_db["Things"][id]["T_TYPE"]
 713         if world_db["ThingTypes"][type]["TT_CONSUMABLE"]:
 714             t["T_CARRIES"].remove(id)
 715             del world_db["Things"][id]
 716             t["T_SATIATION"] += world_db["ThingTypes"][type]["TT_CONSUMABLE"]
 717             if t == world_db["Things"][0]:
 718                 strong_write(io_db["file_out"],
 719                              "LOG You consume this object.\n")
 720         elif t == world_db["Things"][0]:
 721             strong_write(io_db["file_out"],
 722                          "LOG You try to use this object, but fail.\n")
 723     elif t == world_db["Things"][0]:
 724         strong_write(io_db["file_out"],
 725                      "LOG You try to use an object, but you own none.\n")
 726
 727
 728 def thingproliferation(t, prol_map):
 729     """To chance of 1/TT_PROLIFERATE, create t offspring in open neighbor cell.
 730
 731     Naturally only works with TT_PROLIFERATE > 0. The neighbor cell must be be
 732     marked '.' in prol_map. If there are several map cell candidates, one is
 733     selected randomly.
 734     """
 735     prolscore = world_db["ThingTypes"][t["T_TYPE"]]["TT_PROLIFERATE"]
 736     if prolscore and (1 == prolscore or 1 == (rand.next() % prolscore)):
 737         candidates = []
 738         for dir in [directions_db[key] for key in directions_db]:
 739             mv_result = mv_yx_in_dir_legal(dir, t["T_POSY"], t["T_POSX"])
 740             if mv_result[0] and  ord('.') == prol_map[mv_result[1]
 741                                                       * world_db["MAP_LENGTH"]
 742                                                       + mv_result[2]]:
 743                 candidates.append((mv_result[1], mv_result[2]))
 744         if len(candidates):
 745             i = rand.next() % len(candidates)
 746             id = id_setter(-1, "Things")
 747             newT = new_Thing(t["T_TYPE"], (candidates[i][0], candidates[i][1]))
 748             world_db["Things"][id] = newT
 749
 750
 751 def try_healing(t):
 752     """Grow t's HP to a 1/32 chance if < HP max, satiation > 0, and waiting.
 753
 754     On success, decrease satiation score by 32.
 755     """
 756     if t["T_SATIATION"] > 0 \
 757        and t["T_LIFEPOINTS"] < \
 758         world_db["ThingTypes"][t["T_TYPE"]]["TT_LIFEPOINTS"] \
 759        and 0 == (rand.next() % 31) \
 760        and t["T_COMMAND"] == [id for id in world_db["ThingActions"]
 761                               if world_db["ThingActions"][id]["TA_NAME"] ==
 762                               "wait"][0]:
 763         t["T_LIFEPOINTS"] += 1
 764         t["T_SATIATION"] -= 32
 765         if t == world_db["Things"][0]:
 766             strong_write(io_db["file_out"], "LOG You heal.\n")
 767
 768
 769 def hunger(t):
 770     """Decrement t's satiation,dependent on it trigger lifepoint dec chance."""
 771     if t["T_SATIATION"] > -32768:
 772         t["T_SATIATION"] -= 1
 773     testbase = t["T_SATIATION"] if t["T_SATIATION"] >= 0 else -t["T_SATIATION"]
 774     if not world_db["ThingTypes"][t["T_TYPE"]]["TT_LIFEPOINTS"]:
 775         raise RuntimeError("A thing that should not hunger is hungering.")
 776     stomach = int(32767 / world_db["ThingTypes"][t["T_TYPE"]]["TT_LIFEPOINTS"])
 777     if int(int(testbase / stomach) / ((rand.next() % stomach) + 1)):
 778         if t == world_db["Things"][0]:
 779             strong_write(io_db["file_out"], "LOG You suffer from hunger.\n")
 780         decrement_lifepoints(t)
 781
 782
 783 def get_dir_to_target(t, filter):
 784     """Try to set T_COMMAND/T_ARGUMENT for move to "filter"-determined target.
 785
 786     The path-wise nearest target is chosen, via the shortest available path.
 787     Target must not be t. On succcess, return positive value, else False.
 788     Filters:
 789     "a": Thing in FOV is below a certain distance, animate, but of ThingType
 790          that is not t's, and starts out weaker than t is; build path as
 791          avoiding things of t's ThingType
 792     "f": neighbor cell (not inhabited by any animate Thing) further away from
 793          animate Thing not further than x steps away and in FOV and of a
 794          ThingType that is not t's, and starts out stronger or as strong as t
 795          is currently; or (cornered), if no such flight cell, but Thing of
 796          above criteria is too near,1 a cell closer to it, or, if less near,
 797          just wait
 798     "c": Thing in memorized map is consumable
 799     "s": memory map cell with greatest-reachable degree of unexploredness
 800     """
 801
 802     def zero_score_map_where_char_on_memdepthmap(c):
 803         # OUTSOURCED FOR PERFORMANCE REASONS TO libplomrogue.so:
 804         # for i in [i for i in range(world_db["MAP_LENGTH"] ** 2)
 805         #           if t["T_MEMDEPTHMAP"][i] == mem_depth_c[0]]:
 806         #     set_map_score(i, 0)
 807         map = c_pointer_to_bytearray(t["T_MEMDEPTHMAP"])
 808         if libpr.zero_score_map_where_char_on_memdepthmap(c, map):
 809             raise RuntimeError("No score map allocated for "
 810                                "zero_score_map_where_char_on_memdepthmap().")
 811
 812     def set_map_score(pos, score):
 813         test = libpr.set_map_score(pos, score)
 814         if test:
 815             raise RuntimeError("No score map allocated for set_map_score().")
 816
 817     def get_map_score(pos):
 818         result = libpr.get_map_score(pos)
 819         if result < 0:
 820             raise RuntimeError("No score map allocated for get_map_score().")
 821         return result
 822
 823     def seeing_thing():
 824         if t["fovmap"] and ("a" == filter or "f" == filter):
 825             for id in world_db["Things"]:
 826                 Thing = world_db["Things"][id]
 827                 if Thing != t and Thing["T_LIFEPOINTS"] and \
 828                    t["T_TYPE"] != Thing["T_TYPE"] and \
 829                    'v' == chr(t["fovmap"][(Thing["T_POSY"]
 830                                           * world_db["MAP_LENGTH"])
 831                                           + Thing["T_POSX"]]):
 832                     ThingType = world_db["ThingTypes"][Thing["T_TYPE"]]
 833                     if ("f" == filter and ThingType["TT_LIFEPOINTS"] >=
 834                         t["T_LIFEPOINTS"]) \
 835                        or ("a" == filter and ThingType["TT_LIFEPOINTS"] <
 836                             t["T_LIFEPOINTS"]):
 837                         return True
 838         elif t["T_MEMMAP"] and "c" == filter:
 839             for mt in t["T_MEMTHING"]:
 840                 if ' ' != chr(t["T_MEMMAP"][(mt[1] * world_db["MAP_LENGTH"])
 841                                             + mt[2]]) \
 842                    and world_db["ThingTypes"][mt[0]]["TT_CONSUMABLE"]:
 843                     return True
 844         return False
 845
 846     def set_cells_passable_on_memmap_to_65534_on_scoremap():
 847         # OUTSOURCED FOR PERFORMANCE REASONS TO libplomrogue.so:
 848         # ord_dot = ord(".")
 849         # memmap = t["T_MEMMAP"]
 850         # for i in [i for i in range(world_db["MAP_LENGTH"] ** 2)
 851         #            if ord_dot == memmap[i]]:
 852         #     set_map_score(i, 65534) # i.e. 65535-1
 853         map = c_pointer_to_bytearray(t["T_MEMMAP"])
 854         if libpr.set_cells_passable_on_memmap_to_65534_on_scoremap(map):
 855             raise RuntimeError("No score map allocated for set_cells_passable"
 856                                "_on_memmap_to_65534_on_scoremap().")
 857
 858     def init_score_map():
 859         test = libpr.init_score_map()
 860         if test:
 861             raise RuntimeError("Malloc error in init_score_map().")
 862         ord_v = ord("v")
 863         ord_blank = ord(" ")
 864         set_cells_passable_on_memmap_to_65534_on_scoremap()
 865         if "a" == filter:
 866             for id in world_db["Things"]:
 867                 Thing = world_db["Things"][id]
 868                 pos = Thing["T_POSY"] * world_db["MAP_LENGTH"] \
 869                     + Thing["T_POSX"]
 870                 if t != Thing and Thing["T_LIFEPOINTS"] and \
 871                    t["T_TYPE"] != Thing["T_TYPE"] and \
 872                    ord_v == t["fovmap"][pos] and \
 873                    t["T_LIFEPOINTS"] > \
 874                    world_db["ThingTypes"][Thing["T_TYPE"]]["TT_LIFEPOINTS"]:
 875                     set_map_score(pos, 0)
 876                 elif t["T_TYPE"] == Thing["T_TYPE"]:
 877                     set_map_score(pos, 65535)
 878         elif "f" == filter:
 879             for id in [id for id in world_db["Things"]
 880                        if world_db["Things"][id]["T_LIFEPOINTS"]]:
 881                 Thing = world_db["Things"][id]
 882                 pos = Thing["T_POSY"] * world_db["MAP_LENGTH"] \
 883                     + Thing["T_POSX"]
 884                 if t["T_TYPE"] != Thing["T_TYPE"] and \
 885                    ord_v == t["fovmap"][pos] and \
 886                    t["T_LIFEPOINTS"] <= \
 887                    world_db["ThingTypes"][Thing["T_TYPE"]]["TT_LIFEPOINTS"]:
 888                     set_map_score(pos, 0)
 889         elif "c" == filter:
 890             for mt in [mt for mt in t["T_MEMTHING"]
 891                        if ord_blank != t["T_MEMMAP"][mt[1]
 892                                                      * world_db["MAP_LENGTH"]
 893                                                      + mt[2]]
 894                        if world_db["ThingTypes"][mt[0]]["TT_CONSUMABLE"]]:
 895                 set_map_score(mt[1] * world_db["MAP_LENGTH"] + mt[2], 0)
 896         elif "s" == filter:
 897             zero_score_map_where_char_on_memdepthmap(mem_depth_c[0])
 898
 899     def rand_target_dir(neighbors, cmp, dirs):
 900         candidates = []
 901         n_candidates = 0
 902         for i in range(len(dirs)):
 903             if cmp == neighbors[i]:
 904                 candidates.append(dirs[i])
 905                 n_candidates += 1
 906         return candidates[rand.next() % n_candidates] if n_candidates else 0
 907
 908     def get_neighbor_scores(dirs, eye_pos):
 909         scores = []
 910         if libpr.ready_neighbor_scores(eye_pos):
 911             raise RuntimeError("No score map allocated for " +
 912                                "ready_neighbor_scores.()")
 913         for i in range(len(dirs)):
 914             scores.append(libpr.get_neighbor_score(i))
 915         return scores
 916
 917     def get_dir_from_neighbors():
 918         dir_to_target = False
 919         dirs = "edcxsw"
 920         eye_pos = t["T_POSY"] * world_db["MAP_LENGTH"] + t["T_POSX"]
 921         neighbors = get_neighbor_scores(dirs, eye_pos)
 922         if "f" == filter:
 923             inhabited = [world_db["Things"][id]["T_POSY"]
 924                          * world_db["MAP_LENGTH"]
 925                          + world_db["Things"][id]["T_POSX"]
 926                          for id in world_db["Things"]
 927                          if world_db["Things"][id]["T_LIFEPOINTS"]]
 928             for i in range(len(dirs)):
 929                 mv_yx_in_dir_legal(dirs[i], t["T_POSY"], t["T_POSX"])
 930                 pos_cmp = libpr.result_y() * world_db["MAP_LENGTH"] \
 931                     + libpr.result_x()
 932                 for pos in [pos for pos in inhabited if pos == pos_cmp]:
 933                     neighbors[i] = 65535
 934                     break
 935         minmax_start = 0 if "f" == filter else 65535 - 1
 936         minmax_neighbor = minmax_start
 937         for i in range(len(dirs)):
 938             if ("f" == filter and get_map_score(eye_pos) < neighbors[i] and
 939                 minmax_neighbor < neighbors[i] and 65535 != neighbors[i]) \
 940                or ("f" != filter and minmax_neighbor > neighbors[i]):
 941                 minmax_neighbor = neighbors[i]
 942         if minmax_neighbor != minmax_start:
 943             dir_to_target = rand_target_dir(neighbors, minmax_neighbor, dirs)
 944         if "f" == filter:
 945             if not dir_to_target:
 946                 if 1 == get_map_score(eye_pos):
 947                     dir_to_target = rand_target_dir(neighbors, 0, dirs)
 948                 elif 3 >= get_map_score(eye_pos):
 949                     t["T_COMMAND"] = [id for id in world_db["ThingActions"]
 950                                       if
 951                                       world_db["ThingActions"][id]["TA_NAME"]
 952                                       == "wait"][0]
 953                     return 1
 954             elif dir_to_target and 3 < get_map_score(eye_pos):
 955                 dir_to_target = 0
 956         elif "a" == filter and 10 <= get_map_score(eye_pos):
 957             dir_to_target = 0
 958         return dir_to_target
 959
 960     dir_to_target = False
 961     mem_depth_c = b' '
 962     run_i = 9 + 1 if "s" == filter else 1
 963     while run_i and not dir_to_target and ("s" == filter or seeing_thing()):
 964         run_i -= 1
 965         init_score_map()
 966         mem_depth_c = b'9' if b' ' == mem_depth_c \
 967             else bytes([mem_depth_c[0] - 1])
 968         if libpr.dijkstra_map():
 969             raise RuntimeError("No score map allocated for dijkstra_map().")
 970         dir_to_target = get_dir_from_neighbors()
 971         libpr.free_score_map()
 972         if dir_to_target and str == type(dir_to_target):
 973             t["T_COMMAND"] = [id for id in world_db["ThingActions"]
 974                               if world_db["ThingActions"][id]["TA_NAME"]
 975                               == "move"][0]
 976             t["T_ARGUMENT"] = ord(dir_to_target)
 977     return dir_to_target
 978
 979
 980 def standing_on_consumable(t):
 981     """Return True/False whether t is standing on a consumable."""
 982     for id in [id for id in world_db["Things"] if world_db["Things"][id] != t
 983                if world_db["Things"][id]["T_POSY"] == t["T_POSY"]
 984                if world_db["Things"][id]["T_POSX"] == t["T_POSX"]
 985                if world_db["ThingTypes"][world_db["Things"][id]["T_TYPE"]]
 986                           ["TT_CONSUMABLE"]]:
 987         return True
 988     return False
 989
 990
 991 def get_inventory_slot_to_consume(t):
 992     """Return slot Id of strongest consumable in t's inventory, else -1."""
 993     cmp_consumability = 0
 994     selection = -1
 995     i = 0
 996     for id in t["T_CARRIES"]:
 997         type = world_db["Things"][id]["T_TYPE"]
 998         if world_db["ThingTypes"][type]["TT_CONSUMABLE"] > cmp_consumability:
 999             cmp_consumability = world_db["ThingTypes"][type]["TT_CONSUMABLE"]
1000             selection = i
1001         i += 1
1002     return selection
1003
1004
1005 def ai(t):
1006     """Determine next command/argment for actor t via AI algorithms.
1007
1008     AI will look for, and move towards, enemies (animate Things not of their
1009     own ThingType); if they see none, they will consume consumables in their
1010     inventory; if there are none, they will pick up what they stand on if they
1011     stand on consumables; if they stand on none, they will move towards the
1012     next consumable they see or remember on the map; if they see or remember
1013     none, they will explore parts of the map unseen since ever or for at least
1014     one turn; if there is nothing to explore, they will simply wait.
1015     """
1016     t["T_COMMAND"] = [id for id in world_db["ThingActions"]
1017                       if world_db["ThingActions"][id]["TA_NAME"] == "wait"][0]
1018     if not get_dir_to_target(t, "f"):
1019         sel = get_inventory_slot_to_consume(t)
1020         if -1 != sel:
1021             t["T_COMMAND"] = [id for id in world_db["ThingActions"]
1022                               if world_db["ThingActions"][id]["TA_NAME"]
1023                               == "use"][0]
1024             t["T_ARGUMENT"] = sel
1025         elif standing_on_consumable(t):
1026             t["T_COMMAND"] = [id for id in world_db["ThingActions"]
1027                               if world_db["ThingActions"][id]["TA_NAME"]
1028                               == "pick_up"][0]
1029         elif (not get_dir_to_target(t, "c")) and \
1030              (not get_dir_to_target(t, "a")):
1031             get_dir_to_target(t, "s")
1032
1033
1034 def turn_over():
1035     """Run game world and its inhabitants until new player input expected."""
1036     id = 0
1037     whilebreaker = False
1038     while world_db["Things"][0]["T_LIFEPOINTS"]:
1039         proliferable_map = world_db["MAP"][:]
1040         for id in [id for id in world_db["Things"]
1041                    if not world_db["Things"][id]["carried"]]:
1042             y = world_db["Things"][id]["T_POSY"]
1043             x = world_db["Things"][id]["T_POSX"]
1044             proliferable_map[y * world_db["MAP_LENGTH"] + x] = ord('X')
1045         for id in [id for id in world_db["Things"]]:  # Only what's from start!
1046             if not id in world_db["Things"] or \
1047                world_db["Things"][id]["carried"]:   # May have been consumed or
1048                 continue                            # picked up during turn …
1049             Thing = world_db["Things"][id]
1050             if Thing["T_LIFEPOINTS"]:
1051                 if not Thing["T_COMMAND"]:
1052                     update_map_memory(Thing)
1053                     if 0 == id:
1054                         whilebreaker = True
1055                         break
1056                     ai(Thing)
1057                 try_healing(Thing)
1058                 hunger(Thing)
1059                 if Thing["T_LIFEPOINTS"]:
1060                     Thing["T_PROGRESS"] += 1
1061                     taid = [a for a in world_db["ThingActions"]
1062                               if a == Thing["T_COMMAND"]][0]
1063                     ThingAction = world_db["ThingActions"][taid]
1064                     if Thing["T_PROGRESS"] == ThingAction["TA_EFFORT"]:
1065                         eval("actor_" + ThingAction["TA_NAME"])(Thing)
1066                         Thing["T_COMMAND"] = 0
1067                         Thing["T_PROGRESS"] = 0
1068             thingproliferation(Thing, proliferable_map)
1069         if whilebreaker:
1070             break
1071         world_db["TURN"] += 1
1072
1073
1074 def new_Thing(type, pos=(0, 0)):
1075     """Return Thing of type T_TYPE, with fovmap if alive and world active."""
1076     thing = {
1077         "T_LIFEPOINTS": world_db["ThingTypes"][type]["TT_LIFEPOINTS"],
1078         "T_ARGUMENT": 0,
1079         "T_PROGRESS": 0,
1080         "T_SATIATION": 0,
1081         "T_COMMAND": 0,
1082         "T_TYPE": type,
1083         "T_POSY": pos[0],
1084         "T_POSX": pos[1],
1085         "T_CARRIES": [],
1086         "carried": False,
1087         "T_MEMTHING": [],
1088         "T_MEMMAP": False,
1089         "T_MEMDEPTHMAP": False,
1090         "fovmap": False
1091     }
1092     if world_db["WORLD_ACTIVE"] and thing["T_LIFEPOINTS"]:
1093         build_fov_map(thing)
1094     return thing
1095
1096
1097 def id_setter(id, category, id_store=False, start_at_1=False):
1098     """Set ID of object of category to manipulate ID unused? Create new one.
1099     The ID is stored as id_store.id (if id_store is set). If the integer of the
1100     input is valid (if start_at_1, >= 0, else >= -1), but <0 or (if start_at_1)
1101     <1, calculate new ID: lowest unused ID >=0 or (if start_at_1) >= 1. None is
1102     always returned when no new object is created, else the new object's ID.
1103     """
1104     min = 0 if start_at_1 else -1
1105     if str == type(id):
1106         id = integer_test(id, min)
1107     if None != id:
1108         if id in world_db[category]:
1109             if id_store:
1110                 id_store.id = id
1111             return None
1112         else:
1113             if (start_at_1 and 0 == id) \
1114                or ((not start_at_1) and (id < 0)):
1115                 id = 0 if start_at_1 else -1
1116                 while 1:
1117                     id = id + 1
1118                     if id not in world_db[category]:
1119                         break
1120             if id_store:
1121                 id_store.id = id
1122     return id
1123
1124
1125 def command_ping():
1126     """Send PONG line to server output file."""
1127     strong_write(io_db["file_out"], "PONG\n")
1128
1129
1130 def command_quit():
1131     """Abort server process."""
1132     if None == opts.replay:
1133         if world_db["WORLD_ACTIVE"]:
1134             save_world()
1135         atomic_write(io_db["path_record"], io_db["record_chunk"], do_append=True)
1136     raise SystemExit("received QUIT command")
1137
1138
1139 def command_thingshere(str_y, str_x):
1140     """Write to out file list of Things known to player at coordinate y, x."""
1141     if world_db["WORLD_ACTIVE"]:
1142         y = integer_test(str_y, 0, 255)
1143         x = integer_test(str_x, 0, 255)
1144         length = world_db["MAP_LENGTH"]
1145         if None != y and None != x and y < length and x < length:
1146             pos = (y * world_db["MAP_LENGTH"]) + x
1147             strong_write(io_db["file_out"], "THINGS_HERE START\n")
1148             if "v" == chr(world_db["Things"][0]["fovmap"][pos]):
1149                 for id in world_db["Things"]:
1150                     if y == world_db["Things"][id]["T_POSY"] \
1151                        and x == world_db["Things"][id]["T_POSX"] \
1152                        and not world_db["Things"][id]["carried"]:
1153                         type = world_db["Things"][id]["T_TYPE"]
1154                         name = world_db["ThingTypes"][type]["TT_NAME"]
1155                         strong_write(io_db["file_out"], name + "\n")
1156             else:
1157                 for mt in world_db["Things"][0]["T_MEMTHING"]:
1158                     if y == mt[1] and x == mt[2]:
1159                         name = world_db["ThingTypes"][mt[0]]["TT_NAME"]
1160                         strong_write(io_db["file_out"], name + "\n")
1161             strong_write(io_db["file_out"], "THINGS_HERE END\n")
1162         else:
1163             print("Ignoring: Invalid map coordinates.")
1164     else:
1165         print("Ignoring: Command only works on existing worlds.")
1166
1167
1168 def play_commander(action, args=False):
1169     """Setter for player's T_COMMAND and T_ARGUMENT, then calling turn_over().
1170
1171     T_ARGUMENT is set to direction char if action=="wait",or 8-bit int if args.
1172     """
1173
1174     def set_command():
1175         id = [x for x in world_db["ThingActions"]
1176               if world_db["ThingActions"][x]["TA_NAME"] == action][0]
1177         world_db["Things"][0]["T_COMMAND"] = id
1178         turn_over()
1179
1180     def set_command_and_argument_int(str_arg):
1181         val = integer_test(str_arg, 0, 255)
1182         if None != val:
1183             world_db["Things"][0]["T_ARGUMENT"] = val
1184             set_command()
1185
1186     def set_command_and_argument_movestring(str_arg):
1187         if str_arg in directions_db:
1188             world_db["Things"][0]["T_ARGUMENT"] = ord(directions_db[str_arg])
1189             set_command()
1190         else:
1191             print("Ignoring: Argument must be valid direction string.")
1192
1193     if action == "move":
1194         return set_command_and_argument_movestring
1195     elif args:
1196         return set_command_and_argument_int
1197     else:
1198         return set_command
1199
1200
1201 def command_seedrandomness(seed_string):
1202     """Set rand seed to int(seed_string)."""
1203     val = integer_test(seed_string, 0, 4294967295)
1204     if None != val:
1205         rand.seed = val
1206
1207
1208 def command_makeworld(seed_string):
1209     """(Re-)build game world, i.e. map, things, to a new turn 1 from seed.
1210
1211     Seed rand with seed. Do more only with a "wait" ThingAction and
1212     world["PLAYER_TYPE"] matching ThingType of TT_START_NUMBER > 0. Then,
1213     world_db["Things"] emptied, call make_map() and set
1214     world_db["WORLD_ACTIVE"], world_db["TURN"] to 1. Build new Things
1215     according to ThingTypes' TT_START_NUMBERS, with Thing of ID 0 to ThingType
1216     of ID = world["PLAYER_TYPE"]. Place Things randomly, and actors not on each
1217     other. Init player's memory map. Write "NEW_WORLD" line to out file.
1218     Call log_help().
1219     """
1220
1221     def free_pos():
1222         i = 0
1223         while 1:
1224             err = "Space to put thing on too hard to find. Map too small?"
1225             while 1:
1226                 y = rand.next() % world_db["MAP_LENGTH"]
1227                 x = rand.next() % world_db["MAP_LENGTH"]
1228                 if "." == chr(world_db["MAP"][y * world_db["MAP_LENGTH"] + x]):
1229                     break
1230                 i += 1
1231                 if i == 65535:
1232                     raise SystemExit(err)
1233             # Replica of C code, wrongly ignores animatedness of new Thing.
1234             pos_clear = (0 == len([id for id in world_db["Things"]
1235                                    if world_db["Things"][id]["T_LIFEPOINTS"]
1236                                    if world_db["Things"][id]["T_POSY"] == y
1237                                    if world_db["Things"][id]["T_POSX"] == x]))
1238             if pos_clear:
1239                 break
1240         return (y, x)
1241
1242     val = integer_test(seed_string, 0, 4294967295)
1243     if None == val:
1244         return
1245     rand.seed = val
1246     player_will_be_generated = False
1247     playertype = world_db["PLAYER_TYPE"]
1248     for ThingType in world_db["ThingTypes"]:
1249         if playertype == ThingType:
1250             if 0 < world_db["ThingTypes"][ThingType]["TT_START_NUMBER"]:
1251                 player_will_be_generated = True
1252             break
1253     if not player_will_be_generated:
1254         print("Ignoring: No player type with start number >0 defined.")
1255         return
1256     wait_action = False
1257     for ThingAction in world_db["ThingActions"]:
1258         if "wait" == world_db["ThingActions"][ThingAction]["TA_NAME"]:
1259             wait_action = True
1260     if not wait_action:
1261         print("Ignoring beyond SEED_MAP: " +
1262               "No thing action with name 'wait' defined.")
1263         return
1264     world_db["Things"] = {}
1265     make_map()
1266     world_db["WORLD_ACTIVE"] = 1
1267     world_db["TURN"] = 1
1268     for i in range(world_db["ThingTypes"][playertype]["TT_START_NUMBER"]):
1269         id = id_setter(-1, "Things")
1270         world_db["Things"][id] = new_Thing(playertype, free_pos())
1271     if not world_db["Things"][0]["fovmap"]:
1272         empty_fovmap = bytearray(b" " * world_db["MAP_LENGTH"] ** 2)
1273         world_db["Things"][0]["fovmap"] = empty_fovmap
1274     update_map_memory(world_db["Things"][0])
1275     for type in world_db["ThingTypes"]:
1276         for i in range(world_db["ThingTypes"][type]["TT_START_NUMBER"]):
1277             if type != playertype:
1278                 id = id_setter(-1, "Things")
1279                 world_db["Things"][id] = new_Thing(type, free_pos())
1280     strong_write(io_db["file_out"], "NEW_WORLD\n")
1281     log_help()
1282
1283
1284 def command_maplength(maplength_string):
1285     """Redefine map length. Invalidate map, therefore lose all things on it."""
1286     val = integer_test(maplength_string, 1, 256)
1287     if None != val:
1288         world_db["MAP_LENGTH"] = val
1289         world_db["MAP"] = False
1290         set_world_inactive()
1291         world_db["Things"] = {}
1292         libpr.set_maplength(val)
1293
1294
1295 def command_worldactive(worldactive_string):
1296     """Toggle world_db["WORLD_ACTIVE"] if possible.
1297
1298     An active world can always be set inactive. An inactive world can only be
1299     set active with a "wait" ThingAction, and a player Thing (of ID 0), and a
1300     map. On activation, rebuild all Things' FOVs, and the player's map memory.
1301     Also call log_help().
1302     """
1303     val = integer_test(worldactive_string, 0, 1)
1304     if None != val:
1305         if 0 != world_db["WORLD_ACTIVE"]:
1306             if 0 == val:
1307                 set_world_inactive()
1308             else:
1309                 print("World already active.")
1310         elif 0 == world_db["WORLD_ACTIVE"]:
1311             wait_exists = False
1312             for ThingAction in world_db["ThingActions"]:
1313                 if "wait" == world_db["ThingActions"][ThingAction]["TA_NAME"]:
1314                     wait_exists = True
1315                     break
1316             player_exists = False
1317             for Thing in world_db["Things"]:
1318                 if 0 == Thing:
1319                     player_exists = True
1320                     break
1321             if wait_exists and player_exists and world_db["MAP"]:
1322                 for id in world_db["Things"]:
1323                     if world_db["Things"][id]["T_LIFEPOINTS"]:
1324                         build_fov_map(world_db["Things"][id])
1325                         if 0 == id:
1326                             update_map_memory(world_db["Things"][id], False)
1327                 if not world_db["Things"][0]["T_LIFEPOINTS"]:
1328                     empty_fovmap = bytearray(b" " * world_db["MAP_LENGTH"] ** 2)
1329                     world_db["Things"][0]["fovmap"] = empty_fovmap
1330                 world_db["WORLD_ACTIVE"] = 1
1331                 log_help()
1332             else:
1333                 print("Ignoring: Not all conditions for world activation met.")
1334
1335
1336 def test_for_id_maker(object, category):
1337     """Return decorator testing for object having "id" attribute."""
1338     def decorator(f):
1339         def helper(*args):
1340             if hasattr(object, "id"):
1341                 f(*args)
1342             else:
1343                 print("Ignoring: No " + category +
1344                       " defined to manipulate yet.")
1345         return helper
1346     return decorator
1347
1348
1349 def command_tid(id_string):
1350     """Set ID of Thing to manipulate. ID unused? Create new one.
1351
1352     Default new Thing's type to the first available ThingType, others: zero.
1353     """
1354     id = id_setter(id_string, "Things", command_tid)
1355     if None != id:
1356         if world_db["ThingTypes"] == {}:
1357             print("Ignoring: No ThingType to settle new Thing in.")
1358             return
1359         type = list(world_db["ThingTypes"].keys())[0]
1360         world_db["Things"][id] = new_Thing(type)
1361
1362
1363 test_Thing_id = test_for_id_maker(command_tid, "Thing")
1364
1365
1366 @test_Thing_id
1367 def command_tcommand(str_int):
1368     """Set T_COMMAND of selected Thing."""
1369     val = integer_test(str_int, 0)
1370     if None != val:
1371         if 0 == val or val in world_db["ThingActions"]:
1372             world_db["Things"][command_tid.id]["T_COMMAND"] = val
1373         else:
1374             print("Ignoring: ThingAction ID belongs to no known ThingAction.")
1375
1376
1377 @test_Thing_id
1378 def command_ttype(str_int):
1379     """Set T_TYPE of selected Thing."""
1380     val = integer_test(str_int, 0)
1381     if None != val:
1382         if val in world_db["ThingTypes"]:
1383             world_db["Things"][command_tid.id]["T_TYPE"] = val
1384         else:
1385             print("Ignoring: ThingType ID belongs to no known ThingType.")
1386
1387
1388 @test_Thing_id
1389 def command_tcarries(str_int):
1390     """Append int(str_int) to T_CARRIES of selected Thing.
1391
1392     The ID int(str_int) must not be of the selected Thing, and must belong to a
1393     Thing with unset "carried" flag. Its "carried" flag will be set on owning.
1394     """
1395     val = integer_test(str_int, 0)
1396     if None != val:
1397         if val == command_tid.id:
1398             print("Ignoring: Thing cannot carry itself.")
1399         elif val in world_db["Things"] \
1400                 and not world_db["Things"][val]["carried"]:
1401             world_db["Things"][command_tid.id]["T_CARRIES"].append(val)
1402             world_db["Things"][val]["carried"] = True
1403         else:
1404             print("Ignoring: Thing not available for carrying.")
1405     # Note that the whole carrying structure is different from the C version:
1406     # Carried-ness is marked by a "carried" flag, not by Things containing
1407     # Things internally.
1408
1409
1410 @test_Thing_id
1411 def command_tmemthing(str_t, str_y, str_x):
1412     """Add (int(str_t), int(str_y), int(str_x)) to selected Thing's T_MEMTHING.
1413
1414     The type must fit to an existing ThingType, and the position into the map.
1415     """
1416     type = integer_test(str_t, 0)
1417     posy = integer_test(str_y, 0, 255)
1418     posx = integer_test(str_x, 0, 255)
1419     if None != type and None != posy and None != posx:
1420         if type not in world_db["ThingTypes"] \
1421            or posy >= world_db["MAP_LENGTH"] or posx >= world_db["MAP_LENGTH"]:
1422             print("Ignoring: Illegal value for thing type or position.")
1423         else:
1424             memthing = (type, posy, posx)
1425             world_db["Things"][command_tid.id]["T_MEMTHING"].append(memthing)
1426
1427
1428 def setter_map(maptype):
1429     """Set (world or Thing's) map of maptype's int(str_int)-th line to mapline.
1430
1431     If no map of maptype exists yet, initialize it with ' ' bytes first.
1432     """
1433
1434     def valid_map_line(str_int, mapline):
1435         val = integer_test(str_int, 0, 255)
1436         if None != val:
1437             if val >= world_db["MAP_LENGTH"]:
1438                 print("Illegal value for map line number.")
1439             elif len(mapline) != world_db["MAP_LENGTH"]:
1440                 print("Map line length is unequal map width.")
1441             else:
1442                 return val
1443         return None
1444
1445     def nonThingMap_helper(str_int, mapline):
1446         val = valid_map_line(str_int, mapline)
1447         if None != val:
1448             length = world_db["MAP_LENGTH"]
1449             if not world_db["MAP"]:
1450                 map = bytearray(b' ' * (length ** 2))
1451             else:
1452                 map = world_db["MAP"]
1453             map[val * length:(val * length) + length] = mapline.encode()
1454             if not world_db["MAP"]:
1455                 world_db["MAP"] = map
1456
1457     @test_Thing_id
1458     def ThingMap_helper(str_int, mapline):
1459         val = valid_map_line(str_int, mapline)
1460         if None != val:
1461             length = world_db["MAP_LENGTH"]
1462             if not world_db["Things"][command_tid.id][maptype]:
1463                 map = bytearray(b' ' * (length ** 2))
1464             else:
1465                 map = world_db["Things"][command_tid.id][maptype]
1466             map[val * length:(val * length) + length] = mapline.encode()
1467             if not world_db["Things"][command_tid.id][maptype]:
1468                 world_db["Things"][command_tid.id][maptype] = map
1469
1470     return nonThingMap_helper if maptype == "MAP" else ThingMap_helper
1471
1472
1473
1474 def setter_tpos(axis):
1475     """Generate setter for T_POSX or  T_POSY of selected Thing.
1476
1477     If world is active, rebuilds animate things' fovmap, player's memory map.
1478     """
1479     @test_Thing_id
1480     def helper(str_int):
1481         val = integer_test(str_int, 0, 255)
1482         if None != val:
1483             if val < world_db["MAP_LENGTH"]:
1484                 world_db["Things"][command_tid.id]["T_POS" + axis] = val
1485                 if world_db["WORLD_ACTIVE"] \
1486                    and world_db["Things"][command_tid.id]["T_LIFEPOINTS"]:
1487                     build_fov_map(world_db["Things"][command_tid.id])
1488                     if 0 == command_tid.id:
1489                         update_map_memory(world_db["Things"][command_tid.id])
1490             else:
1491                 print("Ignoring: Position is outside of map.")
1492     return helper
1493
1494
1495 def command_ttid(id_string):
1496     """Set ID of ThingType to manipulate. ID unused? Create new one.
1497
1498     Default new ThingType's TT_SYMBOL to "?", TT_CORPSE_ID to self, others: 0.
1499     """
1500     id = id_setter(id_string, "ThingTypes", command_ttid)
1501     if None != id:
1502         world_db["ThingTypes"][id] = {
1503             "TT_NAME": "(none)",
1504             "TT_CONSUMABLE": 0,
1505             "TT_LIFEPOINTS": 0,
1506             "TT_PROLIFERATE": 0,
1507             "TT_START_NUMBER": 0,
1508             "TT_SYMBOL": "?",
1509             "TT_CORPSE_ID": id
1510         }
1511
1512
1513 test_ThingType_id = test_for_id_maker(command_ttid, "ThingType")
1514
1515
1516 @test_ThingType_id
1517 def command_ttname(name):
1518     """Set TT_NAME of selected ThingType."""
1519     world_db["ThingTypes"][command_ttid.id]["TT_NAME"] = name
1520
1521
1522 @test_ThingType_id
1523 def command_ttsymbol(char):
1524     """Set TT_SYMBOL of selected ThingType. """
1525     if 1 == len(char):
1526         world_db["ThingTypes"][command_ttid.id]["TT_SYMBOL"] = char
1527     else:
1528         print("Ignoring: Argument must be single character.")
1529
1530
1531 @test_ThingType_id
1532 def command_ttcorpseid(str_int):
1533     """Set TT_CORPSE_ID of selected ThingType."""
1534     val = integer_test(str_int, 0)
1535     if None != val:
1536         if val in world_db["ThingTypes"]:
1537             world_db["ThingTypes"][command_ttid.id]["TT_CORPSE_ID"] = val
1538         else:
1539             print("Ignoring: Corpse ID belongs to no known ThignType.")
1540
1541
1542 def command_taid(id_string):
1543     """Set ID of ThingAction to manipulate. ID unused? Create new one.
1544
1545     Default new ThingAction's TA_EFFORT to 1, its TA_NAME to "wait".
1546     """
1547     id = id_setter(id_string, "ThingActions", command_taid, True)
1548     if None != id:
1549         world_db["ThingActions"][id] = {
1550             "TA_EFFORT": 1,
1551             "TA_NAME": "wait"
1552         }
1553
1554
1555 test_ThingAction_id = test_for_id_maker(command_taid, "ThingAction")
1556
1557
1558 @test_ThingAction_id
1559 def command_taname(name):
1560     """Set TA_NAME of selected ThingAction.
1561
1562     The name must match a valid thing action function. If after the name
1563     setting no ThingAction with name "wait" remains, call set_world_inactive().
1564     """
1565     if name == "wait" or name == "move" or name == "use" or name == "drop" \
1566        or name == "pick_up":
1567         world_db["ThingActions"][command_taid.id]["TA_NAME"] = name
1568         if 1 == world_db["WORLD_ACTIVE"]:
1569             wait_defined = False
1570             for id in world_db["ThingActions"]:
1571                 if "wait" == world_db["ThingActions"][id]["TA_NAME"]:
1572                     wait_defined = True
1573                     break
1574             if not wait_defined:
1575                 set_world_inactive()
1576     else:
1577         print("Ignoring: Invalid action name.")
1578     # In contrast to the original,naming won't map a function to a ThingAction.
1579
1580
1581 def command_ai():
1582     """Call ai() on player Thing, then turn_over()."""
1583     ai(world_db["Things"][0])
1584     turn_over()
1585
1586
1587 """Commands database.
1588
1589 Map command start tokens to ([0]) number of expected command arguments, ([1])
1590 the command's meta-ness (i.e. is it to be written to the record file, is it to
1591 be ignored in replay mode if read from server input file), and ([2]) a function
1592 to be called on it.
1593 """
1594 commands_db = {
1595     "QUIT": (0, True, command_quit),
1596     "PING": (0, True, command_ping),
1597     "THINGS_HERE": (2, True, command_thingshere),
1598     "MAKE_WORLD": (1, False, command_makeworld),
1599     "SEED_RANDOMNESS": (1, False, command_seedrandomness),
1600     "TURN": (1, False, setter(None, "TURN", 0, 65535)),
1601     "PLAYER_TYPE": (1, False, setter(None, "PLAYER_TYPE", 0)),
1602     "MAP_LENGTH": (1, False, command_maplength),
1603     "WORLD_ACTIVE": (1, False, command_worldactive),
1604     "MAP": (2, False, setter_map("MAP")),
1605     "TA_ID": (1, False, command_taid),
1606     "TA_EFFORT": (1, False, setter("ThingAction", "TA_EFFORT", 0, 255)),
1607     "TA_NAME": (1, False, command_taname),
1608     "TT_ID": (1, False, command_ttid),
1609     "TT_NAME": (1, False, command_ttname),
1610     "TT_SYMBOL": (1, False, command_ttsymbol),
1611     "TT_CORPSE_ID": (1, False, command_ttcorpseid),
1612     "TT_CONSUMABLE": (1, False, setter("ThingType", "TT_CONSUMABLE",
1613                                        0, 65535)),
1614     "TT_START_NUMBER": (1, False, setter("ThingType", "TT_START_NUMBER",
1615                                          0, 255)),
1616     "TT_PROLIFERATE": (1, False, setter("ThingType", "TT_PROLIFERATE",
1617                                         0, 255)),
1618     "TT_LIFEPOINTS": (1, False, setter("ThingType", "TT_LIFEPOINTS", 0, 255)),
1619     "T_ID": (1, False, command_tid),
1620     "T_ARGUMENT": (1, False, setter("Thing", "T_ARGUMENT", 0, 255)),
1621     "T_PROGRESS": (1, False, setter("Thing", "T_PROGRESS", 0, 255)),
1622     "T_LIFEPOINTS": (1, False, setter("Thing", "T_LIFEPOINTS", 0, 255)),
1623     "T_SATIATION": (1, False, setter("Thing", "T_SATIATION", -32768, 32767)),
1624     "T_COMMAND": (1, False, command_tcommand),
1625     "T_TYPE": (1, False, command_ttype),
1626     "T_CARRIES": (1, False, command_tcarries),
1627     "T_MEMMAP": (2, False, setter_map("T_MEMMAP")),
1628     "T_MEMDEPTHMAP": (2, False, setter_map("T_MEMDEPTHMAP")),
1629     "T_MEMTHING": (3, False, command_tmemthing),
1630     "T_POSY": (1, False, setter_tpos("Y")),
1631     "T_POSX": (1, False, setter_tpos("X")),
1632     "wait": (0, False, play_commander("wait")),
1633     "move": (1, False, play_commander("move")),
1634     "pick_up": (0, False, play_commander("pick_up")),
1635     "drop": (1, False, play_commander("drop", True)),
1636     "use": (1, False, play_commander("use", True)),
1637     "ai": (0, False, command_ai)
1638 }
1639 # TODO: Unhandled cases: (Un-)killing animates (esp. player!) with T_LIFEPOINTS.
1640
1641
1642 """World state database. With sane default values. (Randomness is in rand.)"""
1643 world_db = {
1644     "TURN": 0,
1645     "MAP_LENGTH": 64,
1646     "PLAYER_TYPE": 0,
1647     "WORLD_ACTIVE": 0,
1648     "MAP": False,
1649     "ThingActions": {},
1650     "ThingTypes": {},
1651     "Things": {}
1652 }
1653
1654 """Mapping of direction names to internal direction chars."""
1655 directions_db = {"east": "d", "south-east": "c", "south-west": "x",
1656                  "west": "s", "north-west": "w", "north-east": "e"}
1657
1658 """File IO database."""
1659 io_db = {
1660     "path_save": "save",
1661     "path_record": "record_save",
1662     "path_worldconf": "confserver/world",
1663     "path_server": "server/",
1664     "path_in": "server/in",
1665     "path_out": "server/out",
1666     "path_worldstate": "server/worldstate",
1667     "tmp_suffix": "_tmp",
1668     "kicked_by_rival": False,
1669     "worldstate_updateable": False
1670 }
1671
1672
1673 try:
1674     libpr = prep_library()
1675     rand = RandomnessIO()
1676     opts = parse_command_line_arguments()
1677     if opts.savefile:
1678         io_db["path_save"] = opts.savefile
1679         io_db["path_record"] = "record_" + opts.savefile
1680     setup_server_io()
1681     if opts.verbose:
1682         io_db["verbose"] = True
1683     if None != opts.replay:
1684         replay_game()
1685     else:
1686         play_game()
1687 except SystemExit as exit:
1688     print("ABORTING: " + exit.args[0])
1689 except:
1690     print("SOMETHING WENT WRONG IN UNEXPECTED WAYS")
1691     raise
1692 finally:
1693     cleanup_server_io()