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 import math  # #
  16
  17
  18 class RandomnessIO:
  19     """"Interface to libplomrogue's pseudo-randomness generator."""
  20
  21     def set_seed(self, seed):
  22         libpr.seed_rrand(1, seed)
  23
  24     def get_seed(self):
  25         return libpr.seed_rrand(0, 0)
  26
  27     def next(self):
  28         return libpr.rrand()
  29
  30     seed = property(get_seed, set_seed)
  31
  32
  33 def prep_library():
  34     """Prepare ctypes library at ./libplomrogue.so"""
  35     libpath = ("./libplomrogue.so")
  36     if not os.access(libpath, os.F_OK):
  37         raise SystemExit("No library " + libpath + ", run ./redo first?")
  38     libpr = ctypes.cdll.LoadLibrary(libpath)
  39     libpr.seed_rrand.restype = ctypes.c_uint32
  40     return libpr
  41
  42
  43 def c_pointer_to_bytearray(ba):
  44     """Return C char * pointer to ba."""
  45     type = ctypes.c_char * len(ba)
  46     return type.from_buffer(ba)
  47
  48
  49 def strong_write(file, string):
  50     """Apply write(string), then flush()."""
  51     file.write(string)
  52     file.flush()
  53
  54
  55 def setup_server_io():
  56     """Fill IO files DB with proper file( path)s. Write process IO test string.
  57
  58     Ensure IO files directory at server/. Remove any old input file if found.
  59     Set up new input file for reading, and new output file for writing. Start
  60     output file with process hash line of format PID + " " + floated UNIX time
  61     (io_db["teststring"]). Raise SystemExit if file is found at path of either
  62     record or save file plus io_db["tmp_suffix"].
  63     """
  64     def detect_atomic_leftover(path, tmp_suffix):
  65         path_tmp = path + tmp_suffix
  66         msg = "Found file '" + path_tmp + "' that may be a leftover from an " \
  67               "aborted previous attempt to write '" + path + "'. Aborting " \
  68              "until matter is resolved by removing it from its current path."
  69         if os.access(path_tmp, os.F_OK):
  70             raise SystemExit(msg)
  71     io_db["teststring"] = str(os.getpid()) + " " + str(time.time())
  72     io_db["save_wait"] = 0
  73     io_db["verbose"] = False
  74     io_db["record_chunk"] = ""
  75     os.makedirs(io_db["path_server"], exist_ok=True)
  76     io_db["file_out"] = open(io_db["path_out"], "w")
  77     strong_write(io_db["file_out"], io_db["teststring"] + "\n")
  78     if os.access(io_db["path_in"], os.F_OK):
  79         os.remove(io_db["path_in"])
  80     io_db["file_in"] = open(io_db["path_in"], "w")
  81     io_db["file_in"].close()
  82     io_db["file_in"] = open(io_db["path_in"], "r")
  83     detect_atomic_leftover(io_db["path_save"], io_db["tmp_suffix"])
  84     detect_atomic_leftover(io_db["path_record"], io_db["tmp_suffix"])
  85
  86
  87 def cleanup_server_io():
  88     """Close and (if io_db["kicked_by_rival"] false) remove files in io_db."""
  89     def helper(file_key, path_key):
  90         if file_key in io_db:
  91             io_db[file_key].close()
  92         if not io_db["kicked_by_rival"] \
  93            and os.access(io_db[path_key], os.F_OK):
  94             os.remove(io_db[path_key])
  95     helper("file_in", "path_in")
  96     helper("file_out", "path_out")
  97     helper("file_worldstate", "path_worldstate")
  98     if "file_record" in io_db:
  99         io_db["file_record"].close()
 100
 101
 102 def obey(command, prefix, replay=False, do_record=False):
 103     """Call function from commands_db mapped to command's first token.
 104
 105     Tokenize command string with shlex.split(comments=True). If replay is set,
 106     a non-meta command from the commands_db merely triggers obey() on the next
 107     command from the records file. If not, non-meta commands set
 108     io_db["worldstate_updateable"] to world_db["WORLD_EXISTS"], and, if
 109     do_record is set, are recorded to io_db["record_chunk"], and save_world()
 110     is called (and io_db["record_chunk"] written) if 15 seconds have passed
 111     since the last time it was called. The prefix string is inserted into the
 112     server's input message between its beginning 'input ' and ':'. All activity
 113     is preceded by a server_test() call. Commands that start with a lowercase
 114     letter are ignored when world_db["WORLD_ACTIVE"] is False/0.
 115     """
 116     server_test()
 117     if io_db["verbose"]:
 118         print("input " + prefix + ": " + command)
 119     try:
 120         tokens = shlex.split(command, comments=True)
 121     except ValueError as err:
 122         print("Can't tokenize command string: " + str(err) + ".")
 123         return
 124     if len(tokens) > 0 and tokens[0] in commands_db \
 125        and len(tokens) == commands_db[tokens[0]][0] + 1:
 126         if commands_db[tokens[0]][1]:
 127             commands_db[tokens[0]][2](*tokens[1:])
 128         elif tokens[0][0].islower() and not world_db["WORLD_ACTIVE"]:
 129             print("Ignoring lowercase-starting commands when world inactive.")
 130         elif replay:
 131             print("Due to replay mode, reading command as 'go on in record'.")
 132             line = io_db["file_record"].readline()
 133             if len(line) > 0:
 134                 obey(line.rstrip(), io_db["file_record"].prefix
 135                      + str(io_db["file_record"].line_n))
 136                 io_db["file_record"].line_n = io_db["file_record"].line_n + 1
 137             else:
 138                 print("Reached end of record file.")
 139         else:
 140             commands_db[tokens[0]][2](*tokens[1:])
 141             if do_record:
 142                 io_db["record_chunk"] += command + "\n"
 143                 if time.time() > io_db["save_wait"] + 15:
 144                     atomic_write(io_db["path_record"], io_db["record_chunk"],
 145                                  do_append=True)
 146                     if world_db["WORLD_ACTIVE"]:
 147                         save_world()
 148                     io_db["record_chunk"] = ""
 149                     io_db["save_wait"] = time.time()
 150             io_db["worldstate_updateable"] = world_db["WORLD_ACTIVE"]
 151     elif 0 != len(tokens):
 152         print("Invalid command/argument, or bad number of tokens.")
 153
 154
 155 def atomic_write(path, text, do_append=False, delete=True):
 156     """Atomic write of text to file at path, appended if do_append is set."""
 157     path_tmp = path + io_db["tmp_suffix"]
 158     mode = "w"
 159     if do_append:
 160         mode = "a"
 161         if os.access(path, os.F_OK):
 162             shutil.copyfile(path, path_tmp)
 163     file = open(path_tmp, mode)
 164     strong_write(file, text)
 165     file.close()
 166     if delete and os.access(path, os.F_OK):
 167         os.remove(path)
 168     os.rename(path_tmp, path)
 169
 170
 171 def save_world():
 172     """Save all commands needed to reconstruct current world state."""
 173
 174     def quote(string):
 175         string = string.replace("\u005C", '\u005C\u005C')
 176         return '"' + string.replace('"', '\u005C"') + '"'
 177
 178     def mapsetter(key):
 179         def helper(id=None):
 180             string = ""
 181             if key == "MAP" or world_db["Things"][id][key]:
 182                 map = world_db["MAP"] if key == "MAP" \
 183                                       else world_db["Things"][id][key]
 184                 length = world_db["MAP_LENGTH"]
 185                 for i in range(length):
 186                     line = map[i * length:(i * length) + length].decode()
 187                     string = string + key + " " + str(i) + " " + quote(line) \
 188                              + "\n"
 189             return string
 190         return helper
 191
 192     def memthing(id):
 193         string = ""
 194         for memthing in world_db["Things"][id]["T_MEMTHING"]:
 195             string = string + "T_MEMTHING " + str(memthing[0]) + " " + \
 196                      str(memthing[1]) + " " + str(memthing[2]) + "\n"
 197         return string
 198
 199     def helper(category, id_string, special_keys={}):
 200         string = ""
 201         for id in world_db[category]:
 202             string = string + id_string + " " + str(id) + "\n"
 203             for key in world_db[category][id]:
 204                 if not key in special_keys:
 205                     x = world_db[category][id][key]
 206                     argument = quote(x) if str == type(x) else str(x)
 207                     string = string + key + " " + argument + "\n"
 208                 elif special_keys[key]:
 209                     string = string + special_keys[key](id)
 210         return string
 211
 212     string = ""
 213     for key in world_db:
 214         if (dict != type(world_db[key])
 215             and key != "MAP" and key != "WORLD_ACTIVE"):
 216             string = string + key + " " + str(world_db[key]) + "\n"
 217     string = string + mapsetter("MAP")()
 218     string = string + helper("ThingActions", "TA_ID")
 219     string = string + helper("ThingTypes", "TT_ID", {"TT_CORPSE_ID": False})
 220     for id in world_db["ThingTypes"]:
 221         string = string + "TT_ID " + str(id) + "\n" + "TT_CORPSE_ID " + \
 222                  str(world_db["ThingTypes"][id]["TT_CORPSE_ID"]) + "\n"
 223     string = string + helper("Things", "T_ID",
 224                              {"T_CARRIES": False, "carried": False,
 225                               "T_MEMMAP": mapsetter("T_MEMMAP"),
 226                               "T_MEMTHING": memthing, "fovmap": False,
 227                               "T_MEMDEPTHMAP": mapsetter("T_MEMDEPTHMAP")})
 228     for id in world_db["Things"]:
 229         if [] != world_db["Things"][id]["T_CARRIES"]:
 230             string = string + "T_ID " + str(id) + "\n"
 231             for carried_id in world_db["Things"][id]["T_CARRIES"]:
 232                 string = string + "T_CARRIES " + str(carried_id) + "\n"
 233     string = string + "SEED_RANDOMNESS " + str(rand.seed) + "\n" + \
 234              "WORLD_ACTIVE " + str(world_db["WORLD_ACTIVE"])
 235     atomic_write(io_db["path_save"], string)
 236
 237
 238 def obey_lines_in_file(path, name, do_record=False):
 239     """Call obey() on each line of path's file, use name in input prefix."""
 240     file = open(path, "r")
 241     line_n = 1
 242     for line in file.readlines():
 243         obey(line.rstrip(), name + "file line " + str(line_n),
 244              do_record=do_record)
 245         line_n = line_n + 1
 246     file.close()
 247
 248
 249 def parse_command_line_arguments():
 250     """Return settings values read from command line arguments."""
 251     parser = argparse.ArgumentParser()
 252     parser.add_argument('-s', nargs='?', type=int, dest='replay', const=1,
 253                         action='store')
 254     parser.add_argument('-l', nargs="?", const="save", dest='savefile',
 255                         action="store")
 256     parser.add_argument('-v', dest='verbose', action='store_true')
 257     opts, unknown = parser.parse_known_args()
 258     return opts
 259
 260
 261 def server_test():
 262     """Ensure valid server out file belonging to current process.
 263
 264     This is done by comparing io_db["teststring"] to what's found at the start
 265     of the current file at io_db["path_out"]. On failure, set
 266     io_db["kicked_by_rival"] and raise SystemExit.
 267     """
 268     if not os.access(io_db["path_out"], os.F_OK):
 269         raise SystemExit("Server output file has disappeared.")
 270     file = open(io_db["path_out"], "r")
 271     test = file.readline().rstrip("\n")
 272     file.close()
 273     if test != io_db["teststring"]:
 274         io_db["kicked_by_rival"] = True
 275         msg = "Server test string in server output file does not match. This" \
 276               " indicates that the current server process has been " \
 277               "superseded by another one."
 278         raise SystemExit(msg)
 279
 280
 281 def read_command():
 282     """Return next newline-delimited command from server in file.
 283
 284     Keep building return string until a newline is encountered. Pause between
 285     unsuccessful reads, and after too much waiting, run server_test().
 286     """
 287     wait_on_fail = 0.03333
 288     max_wait = 5
 289     now = time.time()
 290     command = ""
 291     while True:
 292         add = io_db["file_in"].readline()
 293         if len(add) > 0:
 294             command = command + add
 295             if len(command) > 0 and "\n" == command[-1]:
 296                 command = command[:-1]
 297                 break
 298         else:
 299             time.sleep(wait_on_fail)
 300             if now + max_wait < time.time():
 301                 server_test()
 302                 now = time.time()
 303     return command
 304
 305
 306 def try_worldstate_update():
 307     """Write worldstate file if io_db["worldstate_updateable"] is set."""
 308     if io_db["worldstate_updateable"]:
 309
 310         def draw_visible_Things(map, run):
 311             for id in world_db["Things"]:
 312                 type = world_db["Things"][id]["T_TYPE"]
 313                 consumable = world_db["ThingTypes"][type]["TT_CONSUMABLE"]
 314                 alive = world_db["ThingTypes"][type]["TT_LIFEPOINTS"]
 315                 if (0 == run and not consumable and not alive) \
 316                    or (1 == run and consumable and not alive) \
 317                    or (2 == run and alive):
 318                     y = world_db["Things"][id]["T_POSY"]
 319                     x = world_db["Things"][id]["T_POSX"]
 320                     fovflag = world_db["Things"][0]["fovmap"][(y * length) + x]
 321                     if 'v' == chr(fovflag):
 322                         c = world_db["ThingTypes"][type]["TT_SYMBOL"]
 323                         map[(y * length) + x] = ord(c)
 324
 325         def write_map(string, map):
 326             for i in range(length):
 327                 line = map[i * length:(i * length) + length].decode()
 328                 string = string + line + "\n"
 329             return string
 330
 331         inventory = ""
 332         if [] == world_db["Things"][0]["T_CARRIES"]:
 333             inventory = "(none)\n"
 334         else:
 335             for id in world_db["Things"][0]["T_CARRIES"]:
 336                 type_id = world_db["Things"][id]["T_TYPE"]
 337                 name = world_db["ThingTypes"][type_id]["TT_NAME"]
 338                 inventory = inventory + name + "\n"
 339         # 7DRL additions:  GOD_MOOD, GOD_FAVOR
 340         string = str(world_db["TURN"]) + "\n" + \
 341                  str(world_db["GOD_MOOD"]) + "\n" + \
 342                  str(world_db["GOD_FAVOR"]) + "\n" + \
 343                  str(world_db["Things"][0]["T_LIFEPOINTS"]) + "\n" + \
 344                  str(world_db["Things"][0]["T_SATIATION"]) + "\n" + \
 345                  inventory + "%\n" + \
 346                  str(world_db["Things"][0]["T_POSY"]) + "\n" + \
 347                  str(world_db["Things"][0]["T_POSX"]) + "\n" + \
 348                  str(world_db["MAP_LENGTH"]) + "\n"
 349         length = world_db["MAP_LENGTH"]
 350         fov = bytearray(b' ' * (length ** 2))
 351         for pos in range(length ** 2):
 352             if 'v' == chr(world_db["Things"][0]["fovmap"][pos]):
 353                 fov[pos] = world_db["MAP"][pos]
 354         for i in range(3):
 355             draw_visible_Things(fov, i)
 356         string = write_map(string, fov)
 357         mem = world_db["Things"][0]["T_MEMMAP"][:]
 358         for i in range(2):
 359             for mt in world_db["Things"][0]["T_MEMTHING"]:
 360                 consumable = world_db["ThingTypes"][mt[0]]["TT_CONSUMABLE"]
 361                 if (i == 0 and not consumable) or (i == 1 and consumable):
 362                     c = world_db["ThingTypes"][mt[0]]["TT_SYMBOL"]
 363                     mem[(mt[1] * length) + mt[2]] = ord(c)
 364         string = write_map(string, mem)
 365         atomic_write(io_db["path_worldstate"], string, delete=False)
 366         strong_write(io_db["file_out"], "WORLD_UPDATED\n")
 367         io_db["worldstate_updateable"] = False
 368
 369
 370 def replay_game():
 371     """Replay game from record file.
 372
 373     Use opts.replay as breakpoint turn to which to replay automatically before
 374     switching to manual input by non-meta commands in server input file
 375     triggering further reads of record file. Ensure opts.replay is at least 1.
 376     Run try_worldstate_update() before each interactive obey()/read_command().
 377     """
 378     if opts.replay < 1:
 379         opts.replay = 1
 380     print("Replay mode. Auto-replaying up to turn " + str(opts.replay) +
 381           " (if so late a turn is to be found).")
 382     if not os.access(io_db["path_record"], os.F_OK):
 383         raise SystemExit("No record file found to replay.")
 384     io_db["file_record"] = open(io_db["path_record"], "r")
 385     io_db["file_record"].prefix = "record file line "
 386     io_db["file_record"].line_n = 1
 387     while world_db["TURN"] < opts.replay:
 388         line = io_db["file_record"].readline()
 389         if "" == line:
 390             break
 391         obey(line.rstrip(), io_db["file_record"].prefix
 392              + str(io_db["file_record"].line_n))
 393         io_db["file_record"].line_n = io_db["file_record"].line_n + 1
 394     while True:
 395         try_worldstate_update()
 396         obey(read_command(), "in file", replay=True)
 397
 398
 399 def play_game():
 400     """Play game by server input file commands. Before, load save file found.
 401
 402     If no save file is found, a new world is generated from the commands in the
 403     world config plus a 'MAKE WORLD [current Unix timestamp]'. Record this
 404     command and all that follow via the server input file. Run
 405     try_worldstate_update() before each interactive obey()/read_command().
 406     """
 407     if os.access(io_db["path_save"], os.F_OK):
 408         obey_lines_in_file(io_db["path_save"], "save")
 409     else:
 410         if not os.access(io_db["path_worldconf"], os.F_OK):
 411             msg = "No world config file from which to start a new world."
 412             raise SystemExit(msg)
 413         obey_lines_in_file(io_db["path_worldconf"], "world config ",
 414                            do_record=True)
 415         obey("MAKE_WORLD " + str(int(time.time())), "in file", do_record=True)
 416     while True:
 417         try_worldstate_update()
 418         obey(read_command(), "in file", do_record=True)
 419
 420
 421 def make_map():
 422     """(Re-)make island map.
 423
 424     Let "~" represent water, "." land, "X" trees: Build island shape randomly,
 425     start with one land cell in the middle, then go into cycle of repeatedly
 426     selecting a random sea cell and transforming it into land if it is neighbor
 427     to land. The cycle ends when a land cell is due to be created at the map's
 428     border. Then put some trees on the map (TODO: more precise algorithm desc).
 429     """
 430     # 7DRL: Also add some ":" cells, and (not surrounded by trees!) "_" altar.
 431
 432     def is_neighbor(coordinates, type):
 433         y = coordinates[0]
 434         x = coordinates[1]
 435         length = world_db["MAP_LENGTH"]
 436         ind = y % 2
 437         diag_west = x + (ind > 0)
 438         diag_east = x + (ind < (length - 1))
 439         pos = (y * length) + x
 440         if (y > 0 and diag_east
 441             and type == chr(world_db["MAP"][pos - length + ind])) \
 442            or (x < (length - 1)
 443                and type == chr(world_db["MAP"][pos + 1])) \
 444            or (y < (length - 1) and diag_east
 445                and type == chr(world_db["MAP"][pos + length + ind])) \
 446            or (y > 0 and diag_west
 447                and type == chr(world_db["MAP"][pos - length - (not ind)])) \
 448            or (x > 0
 449                and type == chr(world_db["MAP"][pos - 1])) \
 450            or (y < (length - 1) and diag_west
 451                and type == chr(world_db["MAP"][pos + length - (not ind)])):
 452             return True
 453         return False
 454
 455     world_db["MAP"] = bytearray(b'~' * (world_db["MAP_LENGTH"] ** 2))
 456     length = world_db["MAP_LENGTH"]
 457     add_half_width = (not (length % 2)) * int(length / 2)
 458     world_db["MAP"][int((length ** 2) / 2) + add_half_width] = ord(".")
 459     while (1):
 460         y = rand.next() % length
 461         x = rand.next() % length
 462         pos = (y * length) + x
 463         if "~" == chr(world_db["MAP"][pos]) and is_neighbor((y, x), "."):
 464             if y == 0 or y == (length - 1) or x == 0 or x == (length - 1):
 465                 break
 466             world_db["MAP"][pos] = ord(".")
 467     n_trees = int((length ** 2) / 16)
 468     i_trees = 0
 469     while (i_trees <= n_trees):
 470         single_allowed = rand.next() % 32
 471         y = rand.next() % length
 472         x = rand.next() % length
 473         pos = (y * length) + x
 474         if "." == chr(world_db["MAP"][pos]) \
 475           and ((not single_allowed) or is_neighbor((y, x), "X")):
 476             world_db["MAP"][pos] = ord("X")
 477             i_trees += 1
 478     # This all-too-precise replica of the original C code misses iter_limit().
 479     n_colons = int((length ** 2) / 16)  # #
 480     i_colons = 0  # #
 481     while (i_colons <= n_colons):  # #
 482         single_allowed = rand.next() % 256  # #
 483         y = rand.next() % length  # #
 484         x = rand.next() % length  # #
 485         pos = (y * length) + x  # #
 486         if ("." == chr(world_db["MAP"][pos])  # #
 487           and ((not single_allowed) or is_neighbor((y, x), ":"))):  # #
 488             world_db["MAP"][pos] = ord(":")  # #
 489             i_colons += 1  # #
 490     altar_placed = False  # #
 491     while not altar_placed:  # #
 492         y = rand.next() % length  # #
 493         x = rand.next() % length  # #
 494         pos = (y * length) + x  # #
 495         if (("." == chr(world_db["MAP"][pos]  # #
 496              or ":" == chr(world_db["MAP"][pos]))
 497             and not is_neighbor((y, x), 'X'))):  # #
 498             world_db["MAP"][pos] = ord("_")  # #
 499             world_db["altar"] = (y, x)  # #
 500             altar_placed = True  # #
 501
 502
 503 def update_map_memory(t, age_map=True):
 504     """Update t's T_MEMMAP with what's in its FOV now,age its T_MEMMEPTHMAP."""
 505
 506     def age_some_memdepthmap_on_nonfov_cells():
 507         # OUTSOURCED FOR PERFORMANCE REASONS TO libplomrogue.so:
 508         # ord_v = ord("v")
 509         # ord_0 = ord("0")
 510         # ord_9 = ord("9")
 511         # for pos in [pos for pos in range(world_db["MAP_LENGTH"] ** 2)
 512         #             if not ord_v == t["fovmap"][pos]
 513         #             if ord_0 <= t["T_MEMDEPTHMAP"][pos]
 514         #             if ord_9 > t["T_MEMDEPTHMAP"][pos]
 515         #             if not rand.next() % (2 **
 516         #                                   (t["T_MEMDEPTHMAP"][pos] - 48))]:
 517         #     t["T_MEMDEPTHMAP"][pos] += 1
 518         memdepthmap = c_pointer_to_bytearray(t["T_MEMDEPTHMAP"])
 519         fovmap = c_pointer_to_bytearray(t["fovmap"])
 520         libpr.age_some_memdepthmap_on_nonfov_cells(memdepthmap, fovmap)
 521
 522     if not t["T_MEMMAP"]:
 523         t["T_MEMMAP"] = bytearray(b' ' * (world_db["MAP_LENGTH"] ** 2))
 524     if not t["T_MEMDEPTHMAP"]:
 525         t["T_MEMDEPTHMAP"] = bytearray(b' ' * (world_db["MAP_LENGTH"] ** 2))
 526     ord_v = ord("v")
 527     ord_0 = ord("0")
 528     ord_space = ord(" ")
 529     for pos in [pos for pos in range(world_db["MAP_LENGTH"] ** 2)
 530                 if ord_v == t["fovmap"][pos]]:
 531         t["T_MEMDEPTHMAP"][pos] = ord_0
 532         if ord_space == t["T_MEMMAP"][pos]:
 533             t["T_MEMMAP"][pos] = world_db["MAP"][pos]
 534     if age_map:
 535         age_some_memdepthmap_on_nonfov_cells()
 536     t["T_MEMTHING"] = [mt for mt in t["T_MEMTHING"]
 537                        if ord_v != t["fovmap"][(mt[1] * world_db["MAP_LENGTH"])
 538                                                + mt[2]]]
 539     for id in [id for id in world_db["Things"]
 540                if not world_db["Things"][id]["carried"]]:
 541         type = world_db["Things"][id]["T_TYPE"]
 542         if not world_db["ThingTypes"][type]["TT_LIFEPOINTS"]:
 543             y = world_db["Things"][id]["T_POSY"]
 544             x = world_db["Things"][id]["T_POSX"]
 545             if ord_v == t["fovmap"][(y * world_db["MAP_LENGTH"]) + x]:
 546                 t["T_MEMTHING"].append((type, y, x))
 547
 548
 549 def set_world_inactive():
 550     """Set world_db["WORLD_ACTIVE"] to 0 and remove worldstate file."""
 551     server_test()
 552     if os.access(io_db["path_worldstate"], os.F_OK):
 553         os.remove(io_db["path_worldstate"])
 554     world_db["WORLD_ACTIVE"] = 0
 555
 556
 557 def integer_test(val_string, min, max=None):
 558     """Return val_string if possible integer >= min and <= max, else None."""
 559     try:
 560         val = int(val_string)
 561         if val < min or (max is not None and val > max):
 562             raise ValueError
 563         return val
 564     except ValueError:
 565         msg = "Ignoring: Please use integer >= " + str(min)
 566         if max is not None:
 567             msg += " and <= " + str(max)
 568         msg += "."
 569         print(msg)
 570         return None
 571
 572
 573 def setter(category, key, min, max=None):
 574     """Build setter for world_db([category + "s"][id])[key] to >=min/<=max."""
 575     if category is None:
 576         def f(val_string):
 577             val = integer_test(val_string, min, max)
 578             if None != val:
 579                 world_db[key] = val
 580     else:
 581         if category == "Thing":
 582             id_store = command_tid
 583             decorator = test_Thing_id
 584         elif category == "ThingType":
 585             id_store = command_ttid
 586             decorator = test_ThingType_id
 587         elif category == "ThingAction":
 588             id_store = command_taid
 589             decorator = test_ThingAction_id
 590
 591         @decorator
 592         def f(val_string):
 593             val = integer_test(val_string, min, max)
 594             if None != val:
 595                 world_db[category + "s"][id_store.id][key] = val
 596     return f
 597
 598
 599 def build_fov_map(t):
 600     """Build Thing's FOV map."""
 601     t["fovmap"] = bytearray(b'v' * (world_db["MAP_LENGTH"] ** 2))
 602     fovmap = c_pointer_to_bytearray(t["fovmap"])
 603     map = c_pointer_to_bytearray(world_db["MAP"])
 604     if libpr.build_fov_map(t["T_POSY"], t["T_POSX"], fovmap, map):
 605         raise RuntimeError("Malloc error in build_fov_Map().")
 606
 607
 608 def log_help():
 609     """Send quick usage info to log."""
 610     strong_write(io_db["file_out"], "LOG "
 611                  + "Use 'w'/'e'/'s'/'d'/'x'/'c' to move, and 'w' to wait.\n")
 612     strong_write(io_db["file_out"], "LOG "
 613                  + "Use 'p' to pick up objects, and 'D' to drop them.\n")
 614     strong_write(io_db["file_out"], "LOG "
 615                  + "Some objects can be used (such as: eaten) by 'u' if "
 616                  + "they are in your inventory. "
 617                  + "Use 'UP'/'DOWN' to navigate the inventory.\n")
 618     strong_write(io_db["file_out"], "LOG "
 619                  + "Use 'l' to toggle 'look' mode (move an exploration cursor "
 620                  + "instead of the player over the map).\n")
 621     strong_write(io_db["file_out"], "LOG See README file for more details.\n")
 622     strong_write(io_db["file_out"], "LOG \n")
 623
 624
 625 def decrement_lifepoints(t):
 626     """Decrement t's lifepoints by 1, and if to zero, corpse it.
 627
 628     If t is the player avatar, only blank its fovmap, so that the client may
 629     still display memory data. On non-player things, erase fovmap and memory.
 630     Dying actors drop all their things.
 631     """
 632     # 7DRL: Also decrements God's mood; deaths heavily so.
 633     # 7DRL: Return 1 if death, else 0.
 634     t["T_LIFEPOINTS"] -= 1
 635     world_db["GOD_MOOD"] -= 1  # #
 636     if 0 == t["T_LIFEPOINTS"]:
 637         sadness = world_db["ThingTypes"][t["T_TYPE"]]["TT_LIFEPOINTS"]  # #
 638         world_db["GOD_MOOD"] -= sadness  # #
 639         for id in t["T_CARRIES"]:
 640             t["T_CARRIES"].remove(id)
 641             world_db["Things"][id]["T_POSY"] = t["T_POSY"]
 642             world_db["Things"][id]["T_POSX"] = t["T_POSX"]
 643             world_db["Things"][id]["carried"] = False
 644         t["T_TYPE"] = world_db["ThingTypes"][t["T_TYPE"]]["TT_CORPSE_ID"]
 645         if world_db["Things"][0] == t:
 646             t["fovmap"] = bytearray(b' ' * (world_db["MAP_LENGTH"] ** 2))
 647             strong_write(io_db["file_out"], "LOG You die.\n")
 648             strong_write(io_db["file_out"],
 649                          "LOG See README on how to start over.\n")
 650         else:
 651             t["fovmap"] = False
 652             t["T_MEMMAP"] = False
 653             t["T_MEMDEPTHMAP"] = False
 654             t["T_MEMTHING"] = []
 655         return sadness  # #
 656     return 0  # #
 657
 658
 659 def add_gods_favor(i): # #
 660     """"Add to GOD_FAVOR, multiplied with factor growing log. with GOD_MOOD."""
 661     def favor_multiplier(i):
 662         x = 100
 663         threshold = math.e * x
 664         mood = world_db["GOD_MOOD"]
 665         if i > 0:
 666             if mood > threshold:
 667                 i = i * math.log(mood / x)
 668             elif -mood > threshold:
 669                 i = i / math.log(-mood / x)
 670         elif i < 0:
 671             if -mood > threshold:
 672                 i = i * math.log(-mood / x)
 673             if mood > threshold:
 674                 i = i / math.log(mood / x)
 675         return int(i)
 676     world_db["GOD_FAVOR"] += favor_multiplier(i)
 677
 678
 679 def mv_yx_in_dir_legal(dir, y, x):
 680     """Wrapper around libpr.mv_yx_in_dir_legal to simplify its use."""
 681     dir_c = dir.encode("ascii")[0]
 682     test = libpr.mv_yx_in_dir_legal_wrap(dir_c, y, x)
 683     if -1 == test:
 684         raise RuntimeError("Too much wrapping in mv_yx_in_dir_legal_wrap()!")
 685     return (test, libpr.result_y(), libpr.result_x())
 686
 687
 688 def enter_altar():  # #
 689      """What happens when the player enters the altar."""
 690      if world_db["GAME_WON"]:
 691         strong_write(io_db["file_out"],
 692                      "LOG You step on a soul-less slab of stone.\n")
 693         return
 694      strong_write(io_db["file_out"], "LOG YOU ENTER SACRED GROUND.\n")
 695      if world_db["GOD_FAVOR"] > 9000:
 696          world_db["GAME_WON"] = 1
 697          strong_write(io_db["file_out"], "LOG The Island God speaks to you: "
 698                       + "\"You have proven yourself worthy of my respect. "
 699                       + "You were a good citizen to the island, and sometimes "
 700                       + "a better steward to its inhabitants than me. The "
 701                       + "island shall miss you when you leave. But you have "
 702                       + "earned the right to do so. Take this "
 703                       + world_db["ThingTypes"][world_db["SLIPPERS"]]["TT_NAME"]
 704                       + " and USE it when you please. It will take you to "
 705                       + "where you came from. (But do feel free to stay here "
 706                       + "as long as you like.)\"\n")
 707          id = id_setter(-1, "Things")
 708          world_db["Things"][id] = new_Thing(world_db["SLIPPERS"],
 709                                             world_db["altar"])
 710
 711
 712 def actor_wait(t):
 713     """Make t do nothing (but loudly, if player avatar)."""
 714     if t == world_db["Things"][0]:
 715         strong_write(io_db["file_out"], "LOG You wait.\n")
 716
 717
 718 def actor_move(t):
 719     """If passable, move/collide(=attack) thing into T_ARGUMENT's direction."""
 720     # 7DRL: Player wounding (worse: killing) others will lower God's favor.
 721     # 7DRL: Player entering the altar triggers enter_altar().
 722     passable = False
 723     move_result = mv_yx_in_dir_legal(chr(t["T_ARGUMENT"]),
 724                                      t["T_POSY"], t["T_POSX"])
 725     if 1 == move_result[0]:
 726         pos = (move_result[1] * world_db["MAP_LENGTH"]) + move_result[2]
 727         passable = ("." == chr(world_db["MAP"][pos]) or
 728                     ":" == chr(world_db["MAP"][pos]) or # #
 729                     "_" == chr(world_db["MAP"][pos])) # #
 730         hitted = [id for id in world_db["Things"]
 731                   if world_db["Things"][id] != t
 732                   if world_db["Things"][id]["T_LIFEPOINTS"]
 733                   if world_db["Things"][id]["T_POSY"] == move_result[1]
 734                   if world_db["Things"][id]["T_POSX"] == move_result[2]]
 735         if len(hitted):
 736             hit_id = hitted[0]
 737             if t == world_db["Things"][0]:
 738                 hitted_type = world_db["Things"][hit_id]["T_TYPE"]
 739                 hitted_name = world_db["ThingTypes"][hitted_type]["TT_NAME"]
 740                 strong_write(io_db["file_out"], "LOG You wound " + hitted_name
 741                                                 + ".\n")
 742                 add_gods_favor(-1)  # #
 743             elif 0 == hit_id:
 744                 hitter_name = world_db["ThingTypes"][t["T_TYPE"]]["TT_NAME"]
 745                 strong_write(io_db["file_out"], "LOG " + hitter_name +
 746                                                 " wounds you.\n")
 747             test = decrement_lifepoints(world_db["Things"][hit_id])  # #(test=)
 748             if test and t == world_db["Things"][0]:  # #
 749                 add_gods_favor(-test)  # #
 750             return
 751     dir = [dir for dir in directions_db
 752            if directions_db[dir] == chr(t["T_ARGUMENT"])][0]
 753     if passable:
 754         t["T_POSY"] = move_result[1]
 755         t["T_POSX"] = move_result[2]
 756         for id in t["T_CARRIES"]:
 757             world_db["Things"][id]["T_POSY"] = move_result[1]
 758             world_db["Things"][id]["T_POSX"] = move_result[2]
 759         build_fov_map(t)
 760         if t == world_db["Things"][0]:
 761             strong_write(io_db["file_out"], "LOG You move " + dir + ".\n")
 762             if (move_result[1] == world_db["altar"][0] and  # #
 763                 move_result[2] == world_db["altar"][1]):  # #
 764                 enter_altar()  # #
 765     elif t == world_db["Things"][0]:
 766         strong_write(io_db["file_out"], "LOG You fail to move " + dir + ".\n")
 767
 768
 769 def actor_pick_up(t):
 770     """Make t pick up (topmost?) Thing from ground into inventory."""
 771     # Topmostness is actually not defined so far. Picks most nutritious Thing.
 772     # 7DRL: Non-player picking up player-dropped consumable -> GOD_FAVOR gain.
 773     used_slots = len(t["T_CARRIES"]) # #
 774     if used_slots < world_db["ThingTypes"][t["T_TYPE"]]["TT_STORAGE"]: # #
 775         ids = [id for id in world_db["Things"] if world_db["Things"][id] != t
 776                if not world_db["Things"][id]["carried"]
 777                if world_db["Things"][id]["T_POSY"] == t["T_POSY"]
 778                if world_db["Things"][id]["T_POSX"] == t["T_POSX"]]
 779         if len(ids):
 780             highest_id = ids[0]
 781             nutritious = 0
 782             for id in ids:
 783                 type = world_db["Things"][id]["T_TYPE"]
 784                 if world_db["ThingTypes"][type]["TT_CONSUMABLE"] > nutritious:
 785                     nutritious = world_db["ThingTypes"][type]["TT_CONSUMABLE"]
 786                     highest_id = id
 787             world_db["Things"][highest_id]["carried"] = True
 788             if (t != world_db["Things"][0] and  # #
 789                 world_db["Things"][highest_id]["T_PLAYERDROP"]):  # #
 790                 x = world_db["Things"][highest_id]["T_TYPE"]
 791                 score = world_db["ThingTypes"][x]["TT_CONSUMABLE"] / 32  # #
 792                 add_gods_favor(score)  # #
 793                 world_db["Things"][highest_id]["T_PLAYERDROP"] = 0  # #
 794             t["T_CARRIES"].append(highest_id)
 795             if t == world_db["Things"][0]:
 796                 strong_write(io_db["file_out"], "LOG You pick up an object.\n")
 797         elif t == world_db["Things"][0]:
 798             err = "You try to pick up an object, but there is none."
 799             strong_write(io_db["file_out"], "LOG " + err + "\n")
 800     elif t == world_db["Things"][0]: # #
 801         strong_write(io_db["file_out"], "LOG Can't pick up object: " + # #
 802                                         "No storage room to carry more.\n") # #
 803
 804
 805 def actor_drop(t):
 806     """Make t rop Thing from inventory to ground indexed by T_ARGUMENT."""
 807     # TODO: Handle case where T_ARGUMENT matches nothing.
 808     if len(t["T_CARRIES"]):
 809         id = t["T_CARRIES"][t["T_ARGUMENT"]]
 810         t["T_CARRIES"].remove(id)
 811         world_db["Things"][id]["carried"] = False
 812         if t == world_db["Things"][0]:
 813             strong_write(io_db["file_out"], "LOG You drop an object.\n")
 814             world_db["Things"][id]["T_PLAYERDROP"] = 1  # #
 815     elif t == world_db["Things"][0]:
 816         err = "You try to drop an object, but you own none."
 817         strong_write(io_db["file_out"], "LOG " + err + "\n")
 818
 819
 820 def actor_use(t):
 821     """Make t use (for now: consume) T_ARGUMENT-indexed Thing in inventory."""
 822     # TODO: Handle case where T_ARGUMENT matches nothing.
 823     # 7DLR: Handle SLIPPERS-type Thing use.
 824     if len(t["T_CARRIES"]):
 825         id = t["T_CARRIES"][t["T_ARGUMENT"]]
 826         type = world_db["Things"][id]["T_TYPE"]
 827         if type == world_db["SLIPPERS"]:  # #
 828             if t == world_db["Things"][0]:  # #
 829                 strong_write(io_db["file_out"], "LOG You use the "  # #
 830                              + world_db["ThingTypes"][type]["TT_NAME"]  # #
 831                              + ". It glows in wondrous colors, and emits "  # #
 832                              + "a sound as if from a dying cat. The "  # #
 833                              + "Island God laughs.\n")  # #
 834             t["T_LIFEPOINTS"] = 1  # #
 835             decrement_lifepoints(t)  # #
 836         elif world_db["ThingTypes"][type]["TT_CONSUMABLE"]:
 837             t["T_CARRIES"].remove(id)
 838             del world_db["Things"][id]
 839             t["T_SATIATION"] += world_db["ThingTypes"][type]["TT_CONSUMABLE"]
 840             if t == world_db["Things"][0]:
 841                 strong_write(io_db["file_out"],
 842                              "LOG You consume this object.\n")
 843         elif t == world_db["Things"][0]:
 844             strong_write(io_db["file_out"],
 845                          "LOG You try to use this object, but fail.\n")
 846     elif t == world_db["Things"][0]:
 847         strong_write(io_db["file_out"],
 848                      "LOG You try to use an object, but you own none.\n")
 849
 850
 851 def thingproliferation(t, prol_map):
 852     """To chance of 1/TT_PROLIFERATE,create  t offspring in open neighbor cell.
 853
 854     Naturally only works with TT_PROLIFERATE > 0. The neighbor cell must be be
 855     marked "." in prol_map. If there are several map cell candidates, one is
 856     selected randomly.
 857     """
 858     # 7DRL: success increments God's mood
 859     # 7DRL: Things proliferate only on ":" ground.
 860     prolscore = world_db["ThingTypes"][t["T_TYPE"]]["TT_PROLIFERATE"]
 861     if prolscore and (1 == prolscore or 1 == (rand.next() % prolscore)):
 862         candidates = []
 863         for dir in [directions_db[key] for key in directions_db]:
 864             mv_result = mv_yx_in_dir_legal(dir, t["T_POSY"], t["T_POSX"])
 865             if mv_result[0] and ord(":") == prol_map[mv_result[1]  # #
 866             # if mv_result[0] and ord(".") == prol_map[mv_result[1]
 867                                                      * world_db["MAP_LENGTH"]
 868                                                      + mv_result[2]]:
 869                 candidates.append((mv_result[1], mv_result[2]))
 870         if len(candidates):
 871             i = rand.next() % len(candidates)
 872             id = id_setter(-1, "Things")
 873             newT = new_Thing(t["T_TYPE"], (candidates[i][0], candidates[i][1]))
 874             world_db["Things"][id] = newT
 875             world_db["GOD_MOOD"] += 1  # #
 876
 877
 878 def try_healing(t):
 879     """Grow t's HP to a 1/32 chance if < HP max, satiation > 0, and waiting.
 880
 881     On success, decrease satiation score by 32.
 882     """
 883     # 7DRL: Successful heals increment God's mood.
 884     if t["T_SATIATION"] > 0 \
 885        and t["T_LIFEPOINTS"] < \
 886            world_db["ThingTypes"][t["T_TYPE"]]["TT_LIFEPOINTS"] \
 887        and 0 == (rand.next() % 31) \
 888        and t["T_COMMAND"] == [id for id in world_db["ThingActions"]
 889                               if world_db["ThingActions"][id]["TA_NAME"] ==
 890                                  "wait"][0]:
 891         t["T_LIFEPOINTS"] += 1
 892         world_db["GOD_MOOD"] += 1  # #
 893         t["T_SATIATION"] -= 32
 894         if t == world_db["Things"][0]:
 895             strong_write(io_db["file_out"], "LOG You heal.\n")
 896
 897
 898 def hunger(t):
 899     """Decrement t's satiation,dependent on it trigger lifepoint dec chance."""
 900     if t["T_SATIATION"] > -32768:
 901         t["T_SATIATION"] -= 1
 902     testbase = t["T_SATIATION"] if t["T_SATIATION"] >= 0 else -t["T_SATIATION"]
 903     if not world_db["ThingTypes"][t["T_TYPE"]]["TT_LIFEPOINTS"]:
 904         raise RuntimeError("A thing that should not hunger is hungering.")
 905     stomach = int(32767 / world_db["ThingTypes"][t["T_TYPE"]]["TT_LIFEPOINTS"])
 906     if int(int(testbase / stomach) / ((rand.next() % stomach) + 1)):
 907         if t == world_db["Things"][0]:
 908             strong_write(io_db["file_out"], "LOG You suffer from hunger.\n")
 909         decrement_lifepoints(t)
 910
 911
 912 def get_dir_to_target(t, filter):
 913     """Try to set T_COMMAND/T_ARGUMENT for move to "filter"-determined target.
 914
 915     The path-wise nearest target is chosen, via the shortest available path.
 916     Target must not be t. On succcess, return positive value, else False.
 917     Filters:
 918     "a": Thing in FOV is below a certain distance, animate, but of ThingType
 919          that is not t's, and starts out weaker than t is; build path as
 920          avoiding things of t's ThingType
 921     "f": neighbor cell (not inhabited by any animate Thing) further away from
 922          animate Thing not further than x steps away and in FOV and of a
 923          ThingType that is not t's, and starts out stronger or as strong as t
 924          is currently; or (cornered), if no such flight cell, but Thing of
 925          above criteria is too near,1 a cell closer to it, or, if less near,
 926          just wait
 927     "c": Thing in memorized map is consumable
 928     "s": memory map cell with greatest-reachable degree of unexploredness
 929     """
 930
 931     def zero_score_map_where_char_on_memdepthmap(c):
 932         # OUTSOURCED FOR PERFORMANCE REASONS TO libplomrogue.so:
 933         # for i in [i for i in range(world_db["MAP_LENGTH"] ** 2)
 934         #           if t["T_MEMDEPTHMAP"][i] == mem_depth_c[0]]:
 935         #     set_map_score(i, 0)
 936         map = c_pointer_to_bytearray(t["T_MEMDEPTHMAP"])
 937         if libpr.zero_score_map_where_char_on_memdepthmap(c, map):
 938             raise RuntimeError("No score map allocated for "
 939                                "zero_score_map_where_char_on_memdepthmap().")
 940
 941     def set_map_score(pos, score):
 942         test = libpr.set_map_score(pos, score)
 943         if test:
 944             raise RuntimeError("No score map allocated for set_map_score().")
 945
 946     def get_map_score(pos):
 947         result = libpr.get_map_score(pos)
 948         if result < 0:
 949             raise RuntimeError("No score map allocated for get_map_score().")
 950         return result
 951
 952     def seeing_thing():
 953         if t["fovmap"] and ("a" == filter or "f" == filter):
 954             for id in world_db["Things"]:
 955                 Thing = world_db["Things"][id]
 956                 if Thing != t and Thing["T_LIFEPOINTS"] and \
 957                    t["T_TYPE"] != Thing["T_TYPE"] and \
 958                    'v' == chr(t["fovmap"][(Thing["T_POSY"]
 959                                           * world_db["MAP_LENGTH"])
 960                                           + Thing["T_POSX"]]):
 961                     ThingType = world_db["ThingTypes"][Thing["T_TYPE"]]
 962                     if ("f" == filter and ThingType["TT_LIFEPOINTS"] >=
 963                                           t["T_LIFEPOINTS"]) \
 964                        or ("a" == filter and ThingType["TT_LIFEPOINTS"] <
 965                                              t["T_LIFEPOINTS"]):
 966                         return True
 967         elif t["T_MEMMAP"] and "c" == filter:
 968             for mt in t["T_MEMTHING"]:
 969                 if ' ' != chr(t["T_MEMMAP"][(mt[1] * world_db["MAP_LENGTH"])
 970                                          + mt[2]]) \
 971                    and world_db["ThingTypes"][mt[0]]["TT_CONSUMABLE"]:
 972                     return True
 973         return False
 974
 975     def set_cells_passable_on_memmap_to_65534_on_scoremap():
 976         # OUTSOURCED FOR PERFORMANCE REASONS TO libplomrogue.so:
 977         # ord_dot = ord(".")
 978         # memmap = t["T_MEMMAP"]
 979         # for i in [i for i in range(world_db["MAP_LENGTH"] ** 2)
 980         #            if ord_dot == memmap[i]]:
 981         #     set_map_score(i, 65534) # i.e. 65535-1
 982         map = c_pointer_to_bytearray(t["T_MEMMAP"])
 983         if libpr.set_cells_passable_on_memmap_to_65534_on_scoremap(map):
 984             raise RuntimeError("No score map allocated for "
 985                         "set_cells_passable_on_memmap_to_65534_on_scoremap().")
 986
 987     def init_score_map():
 988         test = libpr.init_score_map()
 989         if test:
 990             raise RuntimeError("Malloc error in init_score_map().")
 991         ord_v = ord("v")
 992         ord_blank = ord(" ")
 993         set_cells_passable_on_memmap_to_65534_on_scoremap()
 994         if "a" == filter:
 995             for id in world_db["Things"]:
 996                 Thing = world_db["Things"][id]
 997                 pos = Thing["T_POSY"] * world_db["MAP_LENGTH"] \
 998                       + Thing["T_POSX"]
 999                 if t != Thing and Thing["T_LIFEPOINTS"] and \
1000                    t["T_TYPE"] != Thing["T_TYPE"] and \
1001                    ord_v == t["fovmap"][pos] and \
1002                    t["T_LIFEPOINTS"] > \
1003                    world_db["ThingTypes"][Thing["T_TYPE"]]["TT_LIFEPOINTS"]:
1004                     set_map_score(pos, 0)
1005                 elif t["T_TYPE"] == Thing["T_TYPE"]:
1006                     set_map_score(pos, 65535)
1007         elif "f" == filter:
1008             for id in [id for id in world_db["Things"]
1009                        if world_db["Things"][id]["T_LIFEPOINTS"]]:
1010                 Thing = world_db["Things"][id]
1011                 pos = Thing["T_POSY"] * world_db["MAP_LENGTH"] \
1012                       + Thing["T_POSX"]
1013                 if t["T_TYPE"] != Thing["T_TYPE"] and \
1014                    ord_v == t["fovmap"][pos] and \
1015                    t["T_LIFEPOINTS"] <= \
1016                    world_db["ThingTypes"][Thing["T_TYPE"]]["TT_LIFEPOINTS"]:
1017                     set_map_score(pos, 0)
1018         elif "c" == filter:
1019             for mt in [mt for mt in t["T_MEMTHING"]
1020                        if ord_blank != t["T_MEMMAP"][mt[1]
1021                                                     * world_db["MAP_LENGTH"]
1022                                                     + mt[2]]
1023                        if world_db["ThingTypes"][mt[0]]["TT_CONSUMABLE"]]:
1024                 set_map_score(mt[1] * world_db["MAP_LENGTH"] + mt[2], 0)
1025         elif "s" == filter:
1026             zero_score_map_where_char_on_memdepthmap(mem_depth_c[0])
1027
1028     def rand_target_dir(neighbors, cmp, dirs):
1029         candidates = []
1030         n_candidates = 0
1031         for i in range(len(dirs)):
1032             if cmp == neighbors[i]:
1033                 candidates.append(dirs[i])
1034                 n_candidates += 1
1035         return candidates[rand.next() % n_candidates] if n_candidates else 0
1036
1037     def get_neighbor_scores(dirs, eye_pos):
1038         scores = []
1039         if libpr.ready_neighbor_scores(eye_pos):
1040             raise RuntimeError("No score map allocated for " +
1041                                "ready_neighbor_scores.()")
1042         for i in range(len(dirs)):
1043             scores.append(libpr.get_neighbor_score(i))
1044         return scores
1045
1046     def get_dir_from_neighbors():
1047         dir_to_target = False
1048         dirs = "edcxsw"
1049         eye_pos = t["T_POSY"] * world_db["MAP_LENGTH"] + t["T_POSX"]
1050         neighbors = get_neighbor_scores(dirs, eye_pos)
1051         if "f" == filter:
1052             inhabited = [world_db["Things"][id]["T_POSY"]
1053                          * world_db["MAP_LENGTH"]
1054                          + world_db["Things"][id]["T_POSX"]
1055                          for id in world_db["Things"]
1056                          if world_db["Things"][id]["T_LIFEPOINTS"]]
1057             for i in range(len(dirs)):
1058                 mv_yx_in_dir_legal(dirs[i], t["T_POSY"], t["T_POSX"])
1059                 pos_cmp = libpr.result_y() * world_db["MAP_LENGTH"] \
1060                           + libpr.result_x()
1061                 for pos in [pos for pos in inhabited if pos == pos_cmp]:
1062                     neighbors[i] = 65535
1063                     break
1064         minmax_start = 0 if "f" == filter else 65535 - 1
1065         minmax_neighbor = minmax_start
1066         for i in range(len(dirs)):
1067             if ("f" == filter and get_map_score(eye_pos) < neighbors[i] and
1068                 minmax_neighbor < neighbors[i] and 65535 != neighbors[i]) \
1069                or ("f" != filter and minmax_neighbor > neighbors[i]):
1070                 minmax_neighbor = neighbors[i]
1071         if minmax_neighbor != minmax_start:
1072             dir_to_target = rand_target_dir(neighbors, minmax_neighbor, dirs)
1073         if "f" == filter:
1074             if not dir_to_target:
1075                 if 1 == get_map_score(eye_pos):
1076                     dir_to_target = rand_target_dir(neighbors, 0, dirs)
1077                 elif 3 >= get_map_score(eye_pos):
1078                     t["T_COMMAND"] = [id for id in world_db["ThingActions"]
1079                                       if
1080                                       world_db["ThingActions"][id]["TA_NAME"]
1081                                          == "wait"][0]
1082                     return 1
1083             elif dir_to_target and 3 < get_map_score(eye_pos):
1084                 dir_to_target = 0
1085         elif "a" == filter and 10 <= get_map_score(eye_pos):
1086             dir_to_target = 0
1087         return dir_to_target
1088
1089     dir_to_target = False
1090     mem_depth_c = b' '
1091     run_i = 9 + 1 if "s" == filter else 1
1092     while run_i and not dir_to_target and ("s" == filter or seeing_thing()):
1093         run_i -= 1
1094         init_score_map()
1095         mem_depth_c = b'9' if b' ' == mem_depth_c \
1096                            else bytes([mem_depth_c[0] - 1])
1097         if libpr.dijkstra_map():
1098             raise RuntimeError("No score map allocated for dijkstra_map().")
1099         dir_to_target = get_dir_from_neighbors()
1100         libpr.free_score_map()
1101         if dir_to_target and str == type(dir_to_target):
1102             t["T_COMMAND"] = [id for id in world_db["ThingActions"]
1103                               if world_db["ThingActions"][id]["TA_NAME"]
1104                                  == "move"][0]
1105             t["T_ARGUMENT"] = ord(dir_to_target)
1106     return dir_to_target
1107
1108
1109 def standing_on_consumable(t):
1110     """Return True/False whether t is standing on a consumable."""
1111     for id in [id for id in world_db["Things"] if world_db["Things"][id] != t
1112                if world_db["Things"][id]["T_POSY"] == t["T_POSY"]
1113                if world_db["Things"][id]["T_POSX"] == t["T_POSX"]
1114                if world_db["ThingTypes"][world_db["Things"][id]["T_TYPE"]]
1115                           ["TT_CONSUMABLE"]]:
1116         return True
1117     return False
1118
1119
1120 def get_inventory_slot_to_consume(t):
1121     """Return slot Id of strongest consumable in t's inventory, else -1."""
1122     cmp_consumability = 0
1123     selection = -1
1124     i = 0
1125     for id in t["T_CARRIES"]:
1126         type = world_db["Things"][id]["T_TYPE"]
1127         if world_db["ThingTypes"][type]["TT_CONSUMABLE"] > cmp_consumability:
1128             cmp_consumability = world_db["ThingTypes"][type]["TT_CONSUMABLE"]
1129             selection = i
1130         i += 1
1131     return selection
1132
1133
1134 def ai(t):
1135     """Determine next command/argment for actor t via AI algorithms.
1136
1137     AI will look for, and move towards, enemies (animate Things not of their
1138     own ThingType); if they see none, they will consume consumables in their
1139     inventory; if there are none, they will pick up what they stand on if they
1140     stand on consumables; if they stand on none, they will move towards the
1141     next consumable they see or remember on the map; if they see or remember
1142     none, they will explore parts of the map unseen since ever or for at least
1143     one turn; if there is nothing to explore, they will simply wait.
1144     """
1145     # 7DRL add: Don't pick up or search things when inventory is full.
1146     t["T_COMMAND"] = [id for id in world_db["ThingActions"]
1147                       if world_db["ThingActions"][id]["TA_NAME"] == "wait"][0]
1148     if not get_dir_to_target(t, "f"):
1149         sel = get_inventory_slot_to_consume(t)
1150         if -1 != sel:
1151             t["T_COMMAND"] = [id for id in world_db["ThingActions"]
1152                               if world_db["ThingActions"][id]["TA_NAME"]
1153                                  == "use"][0]
1154             t["T_ARGUMENT"] = sel
1155         elif standing_on_consumable(t) \
1156              and (len(t["T_CARRIES"]) < # #
1157                  world_db["ThingTypes"][t["T_TYPE"]]["TT_STORAGE"]): # #
1158             t["T_COMMAND"] = [id for id in world_db["ThingActions"]
1159                               if world_db["ThingActions"][id]["TA_NAME"]
1160                                  == "pick_up"][0]
1161         elif (not
1162               (len(t["T_CARRIES"]) < # #
1163                 world_db["ThingTypes"][t["T_TYPE"]]["TT_STORAGE"] # #
1164                and get_dir_to_target(t, "c"))) and \
1165              (not get_dir_to_target(t, "a")):
1166             get_dir_to_target(t, "s")
1167
1168
1169 def turn_over():
1170     """Run game world and its inhabitants until new player input expected."""
1171     id = 0
1172     whilebreaker = False
1173     while world_db["Things"][0]["T_LIFEPOINTS"]:
1174         proliferable_map = world_db["MAP"][:]
1175         for id in [id for id in world_db["Things"]
1176                    if not world_db["Things"][id]["carried"]]:
1177             y = world_db["Things"][id]["T_POSY"]
1178             x = world_db["Things"][id]["T_POSX"]
1179             proliferable_map[y * world_db["MAP_LENGTH"] + x] = ord('X')
1180         for id in [id for id in world_db["Things"]]:  # Only what's from start!
1181             if not id in world_db["Things"] or \
1182                world_db["Things"][id]["carried"]:   # May have been consumed or
1183                 continue                            # picked up during turn …
1184             Thing = world_db["Things"][id]
1185             if Thing["T_LIFEPOINTS"]:
1186                 if not Thing["T_COMMAND"]:
1187                     update_map_memory(Thing)
1188                     if 0 == id:
1189                         whilebreaker = True
1190                         break
1191                     ai(Thing)
1192                 try_healing(Thing)
1193                 hunger(Thing)
1194                 if Thing["T_LIFEPOINTS"]:
1195                     Thing["T_PROGRESS"] += 1
1196                     taid = [a for a in world_db["ThingActions"]
1197                               if a == Thing["T_COMMAND"]][0]
1198                     ThingAction = world_db["ThingActions"][taid]
1199                     if Thing["T_PROGRESS"] == ThingAction["TA_EFFORT"]:
1200                         eval("actor_" + ThingAction["TA_NAME"])(Thing)
1201                         Thing["T_COMMAND"] = 0
1202                         Thing["T_PROGRESS"] = 0
1203             thingproliferation(Thing, proliferable_map)
1204         if whilebreaker:
1205             break
1206         world_db["TURN"] += 1
1207
1208
1209 def new_Thing(type, pos=(0, 0)):
1210     """Return Thing of type T_TYPE, with fovmap if alive and world active."""
1211     thing = {
1212         "T_LIFEPOINTS": world_db["ThingTypes"][type]["TT_LIFEPOINTS"],
1213         "T_ARGUMENT": 0,
1214         "T_PROGRESS": 0,
1215         "T_SATIATION": 0,
1216         "T_COMMAND": 0,
1217         "T_PLAYERDROP": 0,  # #
1218         "T_TYPE": type,
1219         "T_POSY": pos[0],
1220         "T_POSX": pos[1],
1221         "T_CARRIES": [],
1222         "carried": False,
1223         "T_MEMTHING": [],
1224         "T_MEMMAP": False,
1225         "T_MEMDEPTHMAP": False,
1226         "fovmap": False
1227     }
1228     if world_db["WORLD_ACTIVE"] and thing["T_LIFEPOINTS"]:
1229         build_fov_map(thing)
1230     return thing
1231
1232
1233 def id_setter(id, category, id_store=False, start_at_1=False):
1234     """Set ID of object of category to manipulate ID unused? Create new one.
1235
1236     The ID is stored as id_store.id (if id_store is set). If the integer of the
1237     input is valid (if start_at_1, >= 0, else >= -1), but <0 or (if start_at_1)
1238     <1, calculate new ID: lowest unused ID >=0 or (if start_at_1) >= 1. None is
1239     always returned when no new object is created, otherwise the new object's
1240     ID.
1241     """
1242     min = 0 if start_at_1 else -1
1243     if str == type(id):
1244         id = integer_test(id, min)
1245     if None != id:
1246         if id in world_db[category]:
1247             if id_store:
1248                 id_store.id = id
1249             return None
1250         else:
1251             if (start_at_1 and 0 == id) \
1252                or ((not start_at_1) and (id < 0)):
1253                 id = 0 if start_at_1 else -1
1254                 while 1:
1255                     id = id + 1
1256                     if id not in world_db[category]:
1257                         break
1258             if id_store:
1259                 id_store.id = id
1260     return id
1261
1262
1263 def command_ping():
1264     """Send PONG line to server output file."""
1265     strong_write(io_db["file_out"], "PONG\n")
1266
1267
1268 def command_quit():
1269     """Abort server process."""
1270     if None == opts.replay:
1271         if world_db["WORLD_ACTIVE"]:
1272             save_world()
1273         atomic_write(io_db["path_record"], io_db["record_chunk"], do_append=True)
1274     raise SystemExit("received QUIT command")
1275
1276
1277 def command_thingshere(str_y, str_x):
1278     """Write to out file list of Things known to player at coordinate y, x."""
1279     if world_db["WORLD_ACTIVE"]:
1280         y = integer_test(str_y, 0, 255)
1281         x = integer_test(str_x, 0, 255)
1282         length = world_db["MAP_LENGTH"]
1283         if None != y and None != x and y < length and x < length:
1284             pos = (y * world_db["MAP_LENGTH"]) + x
1285             strong_write(io_db["file_out"], "THINGS_HERE START\n")
1286             if "v" == chr(world_db["Things"][0]["fovmap"][pos]):
1287                 for id in world_db["Things"]:
1288                     if y == world_db["Things"][id]["T_POSY"] \
1289                        and x == world_db["Things"][id]["T_POSX"] \
1290                        and not world_db["Things"][id]["carried"]:
1291                         type = world_db["Things"][id]["T_TYPE"]
1292                         name = world_db["ThingTypes"][type]["TT_NAME"]
1293                         strong_write(io_db["file_out"], name + "\n")
1294             else:
1295                 for mt in world_db["Things"][0]["T_MEMTHING"]:
1296                     if y == mt[1] and x == mt[2]:
1297                         name = world_db["ThingTypes"][mt[0]]["TT_NAME"]
1298                         strong_write(io_db["file_out"], name + "\n")
1299             strong_write(io_db["file_out"], "THINGS_HERE END\n")
1300         else:
1301             print("Ignoring: Invalid map coordinates.")
1302     else:
1303         print("Ignoring: Command only works on existing worlds.")
1304
1305
1306 def play_commander(action, args=False):
1307     """Setter for player's T_COMMAND and T_ARGUMENT, then calling turn_over().
1308
1309     T_ARGUMENT is set to direction char if action=="wait",or 8-bit int if args.
1310     """
1311
1312     def set_command():
1313         id = [x for x in world_db["ThingActions"]
1314                 if world_db["ThingActions"][x]["TA_NAME"] == action][0]
1315         world_db["Things"][0]["T_COMMAND"] = id
1316         turn_over()
1317
1318     def set_command_and_argument_int(str_arg):
1319         val = integer_test(str_arg, 0, 255)
1320         if None != val:
1321             world_db["Things"][0]["T_ARGUMENT"] = val
1322             set_command()
1323
1324     def set_command_and_argument_movestring(str_arg):
1325         if str_arg in directions_db:
1326             world_db["Things"][0]["T_ARGUMENT"] = ord(directions_db[str_arg])
1327             set_command()
1328         else:
1329             print("Ignoring: Argument must be valid direction string.")
1330
1331     if action == "move":
1332         return set_command_and_argument_movestring
1333     elif args:
1334         return set_command_and_argument_int
1335     else:
1336         return set_command
1337
1338
1339 def command_seedrandomness(seed_string):
1340     """Set rand seed to int(seed_string)."""
1341     val = integer_test(seed_string, 0, 4294967295)
1342     if None != val:
1343         rand.seed = val
1344
1345
1346 def command_makeworld(seed_string):
1347     """(Re-)build game world, i.e. map, things, to a new turn 1 from seed.
1348
1349     Seed rand with seed. Do more only with a "wait" ThingAction and
1350     world["PLAYER_TYPE"] matching ThingType of TT_START_NUMBER > 0. Then,
1351     world_db["Things"] emptied, call make_map() and set
1352     world_db["WORLD_ACTIVE"], world_db["TURN"] to 1. Build new Things
1353     according to ThingTypes' TT_START_NUMBERS, with Thing of ID 0 to ThingType
1354     of ID = world["PLAYER_TYPE"]. Place Things randomly, and actors not on each
1355     other. Init player's memory map. Write "NEW_WORLD" line to out file.
1356     Call log_help().
1357     """
1358
1359     # def free_pos(plant=False):
1360     def free_pos(plant=False):  # #
1361         i = 0
1362         while 1:
1363             err = "Space to put thing on too hard to find. Map too small?"
1364             while 1:
1365                 y = rand.next() % world_db["MAP_LENGTH"]
1366                 x = rand.next() % world_db["MAP_LENGTH"]
1367                 pos = y * world_db["MAP_LENGTH"] + x;
1368                 if (not plant  # #
1369                     and "." == chr(world_db["MAP"][pos])) \
1370                    or ":" == chr(world_db["MAP"][pos]):  # #
1371                     break
1372                 i += 1
1373                 if i == 65535:
1374                     raise SystemExit(err)
1375             # Replica of C code, wrongly ignores animatedness of new Thing.
1376             pos_clear = (0 == len([id for id in world_db["Things"]
1377                                    if world_db["Things"][id]["T_LIFEPOINTS"]
1378                                    if world_db["Things"][id]["T_POSY"] == y
1379                                    if world_db["Things"][id]["T_POSX"] == x]))
1380             if pos_clear:
1381                 break
1382         return (y, x)
1383
1384     val = integer_test(seed_string, 0, 4294967295)
1385     if None == val:
1386         return
1387     rand.seed = val
1388     player_will_be_generated = False
1389     playertype = world_db["PLAYER_TYPE"]
1390     for ThingType in world_db["ThingTypes"]:
1391         if playertype == ThingType:
1392             if 0 < world_db["ThingTypes"][ThingType]["TT_START_NUMBER"]:
1393                 player_will_be_generated = True
1394             break
1395     if not player_will_be_generated:
1396         print("Ignoring: No player type with start number >0 defined.")
1397         return
1398     wait_action = False
1399     for ThingAction in world_db["ThingActions"]:
1400         if "wait" == world_db["ThingActions"][ThingAction]["TA_NAME"]:
1401             wait_action = True
1402     if not wait_action:
1403         print("Ignoring: No thing action with name 'wait' defined.")
1404         return
1405     if not world_db["SLIPPERS"] in world_db["ThingTypes"]:  # #
1406         print("Ignoring: No valid SLIPPERS set.")  # #
1407         return  # #
1408     world_db["Things"] = {}
1409     make_map()
1410     world_db["WORLD_ACTIVE"] = 1
1411     world_db["TURN"] = 1
1412     for i in range(world_db["ThingTypes"][playertype]["TT_START_NUMBER"]):
1413         id = id_setter(-1, "Things")
1414         world_db["Things"][id] = new_Thing(playertype, free_pos())
1415     if not world_db["Things"][0]["fovmap"]:
1416         empty_fovmap = bytearray(b" " * world_db["MAP_LENGTH"] ** 2)
1417         world_db["Things"][0]["fovmap"] = empty_fovmap
1418     update_map_memory(world_db["Things"][0])
1419     for type in world_db["ThingTypes"]:
1420         for i in range(world_db["ThingTypes"][type]["TT_START_NUMBER"]):
1421             if type != playertype:
1422                 id = id_setter(-1, "Things")
1423                 plantness = world_db["ThingTypes"][type]["TT_PROLIFERATE"]  # #
1424                 world_db["Things"][id] = new_Thing(type, free_pos(plantness))
1425     strong_write(io_db["file_out"], "NEW_WORLD\n")
1426     log_help()
1427
1428
1429 def command_maplength(maplength_string):
1430     """Redefine map length. Invalidate map, therefore lose all things on it."""
1431     val = integer_test(maplength_string, 1, 256)
1432     if None != val:
1433         world_db["MAP_LENGTH"] = val
1434         world_db["MAP"] = False
1435         set_world_inactive()
1436         world_db["Things"] = {}
1437         libpr.set_maplength(val)
1438
1439
1440 def command_worldactive(worldactive_string):
1441     """Toggle world_db["WORLD_ACTIVE"] if possible.
1442
1443     An active world can always be set inactive. An inactive world can only be
1444     set active with a "wait" ThingAction, and a player Thing (of ID 0), and a
1445     map. On activation, rebuild all Things' FOVs, and the player's map memory.
1446     Also call log_help().
1447     """
1448     # 7DRL: altar must be on map, and (valid) SLIPPERS must be set for world
1449     # activation.
1450     val = integer_test(worldactive_string, 0, 1)
1451     if None != val:
1452         if 0 != world_db["WORLD_ACTIVE"]:
1453             if 0 == val:
1454                 set_world_inactive()
1455             else:
1456                 print("World already active.")
1457         elif 0 == world_db["WORLD_ACTIVE"]:
1458             wait_exists = False
1459             for ThingAction in world_db["ThingActions"]:
1460                 if "wait" == world_db["ThingActions"][ThingAction]["TA_NAME"]:
1461                     wait_exists = True
1462                     break
1463             player_exists = False
1464             for Thing in world_db["Things"]:
1465                 if 0 == Thing:
1466                     player_exists = True
1467                     break
1468             valid_slippers = world_db["SLIPPERS"] in world_db["ThingTypes"]  # #
1469             altar_found = False  # #
1470             if world_db["MAP"]:  # #
1471                 pos = world_db["MAP"].find(b'_')  # #
1472                 if pos > 0:  # #
1473                     y = int(pos / world_db["MAP_LENGTH"])  # #
1474                     x = pos % world_db["MAP_LENGTH"]  # #
1475                     world_db["altar"] = (y, x)  # #
1476                     altar_found = True  # #
1477             if wait_exists and player_exists and world_db["MAP"] \
1478                 and altar_found and valid_slippers:  # #
1479                 for id in world_db["Things"]:
1480                     if world_db["Things"][id]["T_LIFEPOINTS"]:
1481                         build_fov_map(world_db["Things"][id])
1482                         if 0 == id:
1483                             update_map_memory(world_db["Things"][id], False)
1484                 if not world_db["Things"][0]["T_LIFEPOINTS"]:
1485                     empty_fovmap = bytearray(b" " * world_db["MAP_LENGTH"] ** 2)
1486                     world_db["Things"][0]["fovmap"] = empty_fovmap
1487                 world_db["WORLD_ACTIVE"] = 1
1488                 log_help()
1489             else:
1490                 print("Ignoring: Not all conditions for world activation met.")
1491
1492
1493 def command_slippers(str_int):  # #
1494     """Set SLIPPERS, but deactivate world if not in ThingTypes."""
1495     val = integer_test(str_int, 0)
1496     if None != val:
1497         world_db["SLIPPERS"] = val
1498         if world_db["WORLD_ACTIVE"] and \
1499            world_db["SLIPPERS"] not in world_db["ThingTypes"]:
1500             world_db["WORLD_ACTIVE"] = 0
1501             print("SLIPPERS matches no known ThingTypes, deactivating world.")
1502
1503
1504 def test_for_id_maker(object, category):
1505     """Return decorator testing for object having "id" attribute."""
1506     def decorator(f):
1507         def helper(*args):
1508             if hasattr(object, "id"):
1509                 f(*args)
1510             else:
1511                 print("Ignoring: No " + category +
1512                       " defined to manipulate yet.")
1513         return helper
1514     return decorator
1515
1516
1517 def command_tid(id_string):
1518     """Set ID of Thing to manipulate. ID unused? Create new one.
1519
1520     Default new Thing's type to the first available ThingType, others: zero.
1521     """
1522     id = id_setter(id_string, "Things", command_tid)
1523     if None != id:
1524         if world_db["ThingTypes"] == {}:
1525             print("Ignoring: No ThingType to settle new Thing in.")
1526             return
1527         type = list(world_db["ThingTypes"].keys())[0]
1528         world_db["Things"][id] = new_Thing(type)
1529
1530
1531 test_Thing_id = test_for_id_maker(command_tid, "Thing")
1532
1533
1534 @test_Thing_id
1535 def command_tcommand(str_int):
1536     """Set T_COMMAND of selected Thing."""
1537     val = integer_test(str_int, 0)
1538     if None != val:
1539         if 0 == val or val in world_db["ThingActions"]:
1540             world_db["Things"][command_tid.id]["T_COMMAND"] = val
1541         else:
1542             print("Ignoring: ThingAction ID belongs to no known ThingAction.")
1543
1544
1545 @test_Thing_id
1546 def command_ttype(str_int):
1547     """Set T_TYPE of selected Thing."""
1548     val = integer_test(str_int, 0)
1549     if None != val:
1550         if val in world_db["ThingTypes"]:
1551             world_db["Things"][command_tid.id]["T_TYPE"] = val
1552         else:
1553             print("Ignoring: ThingType ID belongs to no known ThingType.")
1554
1555
1556 @test_Thing_id
1557 def command_tcarries(str_int):
1558     """Append int(str_int) to T_CARRIES of selected Thing.
1559
1560     The ID int(str_int) must not be of the selected Thing, and must belong to a
1561     Thing with unset "carried" flag. Its "carried" flag will be set on owning.
1562     """
1563     val = integer_test(str_int, 0)
1564     if None != val:
1565         if val == command_tid.id:
1566             print("Ignoring: Thing cannot carry itself.")
1567         elif val in world_db["Things"] \
1568              and not world_db["Things"][val]["carried"]:
1569             world_db["Things"][command_tid.id]["T_CARRIES"].append(val)
1570             world_db["Things"][val]["carried"] = True
1571         else:
1572             print("Ignoring: Thing not available for carrying.")
1573     # Note that the whole carrying structure is different from the C version:
1574     # Carried-ness is marked by a "carried" flag, not by Things containing
1575     # Things internally.
1576
1577
1578 @test_Thing_id
1579 def command_tmemthing(str_t, str_y, str_x):
1580     """Add (int(str_t), int(str_y), int(str_x)) to selected Thing's T_MEMTHING.
1581
1582     The type must fit to an existing ThingType, and the position into the map.
1583     """
1584     type = integer_test(str_t, 0)
1585     posy = integer_test(str_y, 0, 255)
1586     posx = integer_test(str_x, 0, 255)
1587     if None != type and None != posy and None != posx:
1588         if type not in world_db["ThingTypes"] \
1589            or posy >= world_db["MAP_LENGTH"] or posx >= world_db["MAP_LENGTH"]:
1590             print("Ignoring: Illegal value for thing type or position.")
1591         else:
1592             memthing = (type, posy, posx)
1593             world_db["Things"][command_tid.id]["T_MEMTHING"].append(memthing)
1594
1595
1596 def setter_map(maptype):
1597     """Set (world or Thing's) map of maptype's int(str_int)-th line to mapline.
1598
1599     If no map of maptype exists yet, initialize it with ' ' bytes first.
1600     """
1601
1602     def valid_map_line(str_int, mapline):
1603         val = integer_test(str_int, 0, 255)
1604         if None != val:
1605             if val >= world_db["MAP_LENGTH"]:
1606                 print("Illegal value for map line number.")
1607             elif len(mapline) != world_db["MAP_LENGTH"]:
1608                 print("Map line length is unequal map width.")
1609             else:
1610                 return val
1611         return None
1612
1613     def nonThingMap_helper(str_int, mapline):
1614         val = valid_map_line(str_int, mapline)
1615         if None != val:
1616             length = world_db["MAP_LENGTH"]
1617             if not world_db["MAP"]:
1618                 map = bytearray(b' ' * (length ** 2))
1619             else:
1620                 map = world_db["MAP"]
1621             map[val * length:(val * length) + length] = mapline.encode()
1622             if not world_db["MAP"]:
1623                 world_db["MAP"] = map
1624
1625     @test_Thing_id
1626     def ThingMap_helper(str_int, mapline):
1627         val = valid_map_line(str_int, mapline)
1628         if None != val:
1629             length = world_db["MAP_LENGTH"]
1630             if not world_db["Things"][command_tid.id][maptype]:
1631                 map = bytearray(b' ' * (length ** 2))
1632             else:
1633                 map = world_db["Things"][command_tid.id][maptype]
1634             map[val * length:(val * length) + length] = mapline.encode()
1635             if not world_db["Things"][command_tid.id][maptype]:
1636                 world_db["Things"][command_tid.id][maptype] = map
1637
1638     return nonThingMap_helper if maptype == "MAP" else ThingMap_helper
1639
1640
1641 def setter_tpos(axis):
1642     """Generate setter for T_POSX or  T_POSY of selected Thing.
1643
1644     If world is active, rebuilds animate things' fovmap, player's memory map.
1645     """
1646     @test_Thing_id
1647     def helper(str_int):
1648         val = integer_test(str_int, 0, 255)
1649         if None != val:
1650             if val < world_db["MAP_LENGTH"]:
1651                 world_db["Things"][command_tid.id]["T_POS" + axis] = val
1652                 if world_db["WORLD_ACTIVE"] \
1653                    and world_db["Things"][command_tid.id]["T_LIFEPOINTS"]:
1654                     build_fov_map(world_db["Things"][command_tid.id])
1655                     if 0 == command_tid.id:
1656                         update_map_memory(world_db["Things"][command_tid.id])
1657             else:
1658                 print("Ignoring: Position is outside of map.")
1659     return helper
1660
1661
1662 def command_ttid(id_string):
1663     """Set ID of ThingType to manipulate. ID unused? Create new one.
1664
1665     Default new ThingType's TT_SYMBOL to "?", TT_CORPSE_ID to self, others: 0.
1666     """
1667     id = id_setter(id_string, "ThingTypes", command_ttid)
1668     if None != id:
1669         world_db["ThingTypes"][id] = {
1670             "TT_NAME": "(none)",
1671             "TT_CONSUMABLE": 0,
1672             "TT_LIFEPOINTS": 0,
1673             "TT_PROLIFERATE": 0,
1674             "TT_START_NUMBER": 0,
1675             "TT_STORAGE": 0, # #
1676             "TT_SYMBOL": "?",
1677             "TT_CORPSE_ID": id
1678         }
1679
1680
1681 test_ThingType_id = test_for_id_maker(command_ttid, "ThingType")
1682
1683
1684 @test_ThingType_id
1685 def command_ttname(name):
1686     """Set TT_NAME of selected ThingType."""
1687     world_db["ThingTypes"][command_ttid.id]["TT_NAME"] = name
1688
1689
1690 @test_ThingType_id
1691 def command_ttsymbol(char):
1692     """Set TT_SYMBOL of selected ThingType. """
1693     if 1 == len(char):
1694         world_db["ThingTypes"][command_ttid.id]["TT_SYMBOL"] = char
1695     else:
1696         print("Ignoring: Argument must be single character.")
1697
1698
1699 @test_ThingType_id
1700 def command_ttcorpseid(str_int):
1701     """Set TT_CORPSE_ID of selected ThingType."""
1702     val = integer_test(str_int, 0)
1703     if None != val:
1704         if val in world_db["ThingTypes"]:
1705             world_db["ThingTypes"][command_ttid.id]["TT_CORPSE_ID"] = val
1706         else:
1707             print("Ignoring: Corpse ID belongs to no known ThignType.")
1708
1709
1710 def command_taid(id_string):
1711     """Set ID of ThingAction to manipulate. ID unused? Create new one.
1712
1713     Default new ThingAction's TA_EFFORT to 1, its TA_NAME to "wait".
1714     """
1715     id = id_setter(id_string, "ThingActions", command_taid, True)
1716     if None != id:
1717         world_db["ThingActions"][id] = {
1718             "TA_EFFORT": 1,
1719             "TA_NAME": "wait"
1720         }
1721
1722
1723 test_ThingAction_id = test_for_id_maker(command_taid, "ThingAction")
1724
1725
1726 @test_ThingAction_id
1727 def command_taname(name):
1728     """Set TA_NAME of selected ThingAction.
1729
1730     The name must match a valid thing action function. If after the name
1731     setting no ThingAction with name "wait" remains, call set_world_inactive().
1732     """
1733     if name == "wait" or name == "move" or name == "use" or name == "drop" \
1734        or name == "pick_up":
1735         world_db["ThingActions"][command_taid.id]["TA_NAME"] = name
1736         if 1 == world_db["WORLD_ACTIVE"]:
1737             wait_defined = False
1738             for id in world_db["ThingActions"]:
1739                 if "wait" == world_db["ThingActions"][id]["TA_NAME"]:
1740                     wait_defined = True
1741                     break
1742             if not wait_defined:
1743                 set_world_inactive()
1744     else:
1745         print("Ignoring: Invalid action name.")
1746     # In contrast to the original,naming won't map a function to a ThingAction.
1747
1748
1749 def command_ai():
1750     """Call ai() on player Thing, then turn_over()."""
1751     ai(world_db["Things"][0])
1752     turn_over()
1753
1754
1755 """Commands database.
1756
1757 Map command start tokens to ([0]) number of expected command arguments, ([1])
1758 the command's meta-ness (i.e. is it to be written to the record file, is it to
1759 be ignored in replay mode if read from server input file), and ([2]) a function
1760 to be called on it.
1761 """
1762 commands_db = {
1763     "QUIT": (0, True, command_quit),
1764     "PING": (0, True, command_ping),
1765     "THINGS_HERE": (2, True, command_thingshere),
1766     "MAKE_WORLD": (1, False, command_makeworld),
1767     "SEED_RANDOMNESS": (1, False, command_seedrandomness),
1768     "TURN": (1, False, setter(None, "TURN", 0, 65535)),
1769     "GOD_MOOD": (1, False, setter(None, "GOD_MOOD", -32768, 32767)),  # #
1770     "GOD_FAVOR": (1, False, setter(None, "GOD_FAVOR", -32768, 32767)),  # #
1771     "PLAYER_TYPE": (1, False, setter(None, "PLAYER_TYPE", 0)),
1772     "MAP_LENGTH": (1, False, command_maplength),
1773     "WORLD_ACTIVE": (1, False, command_worldactive),
1774     "MAP": (2, False, setter_map("MAP")),
1775     "GAME_WON": (1, False, setter(None, "GAME_WON", 0, 1)),  # #
1776     "SLIPPERS": (1, False, command_slippers),  # #
1777     "TA_ID": (1, False, command_taid),
1778     "TA_EFFORT": (1, False, setter("ThingAction", "TA_EFFORT", 0, 255)),
1779     "TA_NAME": (1, False, command_taname),
1780     "TT_ID": (1, False, command_ttid),
1781     "TT_NAME": (1, False, command_ttname),
1782     "TT_SYMBOL": (1, False, command_ttsymbol),
1783     "TT_CORPSE_ID": (1, False, command_ttcorpseid),
1784     "TT_CONSUMABLE": (1, False, setter("ThingType", "TT_CONSUMABLE",
1785                                        0, 65535)),
1786     "TT_START_NUMBER": (1, False, setter("ThingType", "TT_START_NUMBER",
1787                                          0, 255)),
1788     "TT_PROLIFERATE": (1, False, setter("ThingType", "TT_PROLIFERATE",
1789                                         0, 65535)),
1790     "TT_LIFEPOINTS": (1, False, setter("ThingType", "TT_LIFEPOINTS", 0, 255)),
1791     "TT_STORAGE": (1, False, setter("ThingType", "TT_STORAGE", 0, 255)),  # #
1792     "T_ID": (1, False, command_tid),
1793     "T_ARGUMENT": (1, False, setter("Thing", "T_ARGUMENT", 0, 255)),
1794     "T_PROGRESS": (1, False, setter("Thing", "T_PROGRESS", 0, 255)),
1795     "T_LIFEPOINTS": (1, False, setter("Thing", "T_LIFEPOINTS", 0, 255)),
1796     "T_SATIATION": (1, False, setter("Thing", "T_SATIATION", -32768, 32767)),
1797     "T_COMMAND": (1, False, command_tcommand),
1798     "T_TYPE": (1, False, command_ttype),
1799     "T_CARRIES": (1, False, command_tcarries),
1800     "T_MEMMAP": (2, False, setter_map("T_MEMMAP")),
1801     "T_MEMDEPTHMAP": (2, False, setter_map("T_MEMDEPTHMAP")),
1802     "T_MEMTHING": (3, False, command_tmemthing),
1803     "T_POSY": (1, False, setter_tpos("Y")),
1804     "T_POSX": (1, False, setter_tpos("X")),
1805     "T_PLAYERDROP": (1, False, setter("Thing", "T_PLAYERDROP", 0, 1)),  # #
1806     "wait": (0, False, play_commander("wait")),
1807     "move": (1, False, play_commander("move")),
1808     "pick_up": (0, False, play_commander("pick_up")),
1809     "drop": (1, False, play_commander("drop", True)),
1810     "use": (1, False, play_commander("use", True)),
1811     "ai": (0, False, command_ai)
1812 }
1813 # TODO: Unhandled cases: (Un-)killing animates (esp. player!) with T_LIFEPOINTS.
1814
1815
1816 """World state database. With sane default values. (Randomness is in rand.)"""
1817 world_db = {
1818     "TURN": 0,
1819     "MAP_LENGTH": 64,
1820     "PLAYER_TYPE": 0,
1821     "WORLD_ACTIVE": 0,
1822     "GOD_MOOD": 0,  # #
1823     "GOD_FAVOR": 0,  # #
1824     "MAP": False,
1825     "GAME_WON": 0,  # #
1826     "SLIPPERS": 0,  # #
1827     "ThingActions": {},
1828     "ThingTypes": {},
1829     "Things": {}
1830 }
1831
1832 """Mapping of direction names to internal direction chars."""
1833 directions_db = {"east": "d", "south-east": "c", "south-west": "x",
1834                  "west": "s", "north-west": "w", "north-east": "e"}
1835
1836 """File IO database."""
1837 io_db = {
1838     "path_save": "save",
1839     "path_record": "record_save",
1840     "path_worldconf": "confserver/world",
1841     "path_server": "server/",
1842     "path_in": "server/in",
1843     "path_out": "server/out",
1844     "path_worldstate": "server/worldstate",
1845     "tmp_suffix": "_tmp",
1846     "kicked_by_rival": False,
1847     "worldstate_updateable": False
1848 }
1849
1850
1851 try:
1852     libpr = prep_library()
1853     rand = RandomnessIO()
1854     opts = parse_command_line_arguments()
1855     if opts.savefile:
1856         io_db["path_save"] = opts.savefile
1857         io_db["path_record"] = "record_" + opts.savefile
1858     setup_server_io()
1859     if opts.verbose:
1860         io_db["verbose"] = True
1861     if None != opts.replay:
1862         replay_game()
1863     else:
1864         play_game()
1865 except SystemExit as exit:
1866     print("ABORTING: " + exit.args[0])
1867 except:
1868     print("SOMETHING WENT WRONG IN UNEXPECTED WAYS")
1869     raise
1870 finally:
1871     cleanup_server_io()