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 != "altar"  # #
 216             and key != "MAP" and key != "WORLD_ACTIVE"):
 217             string = string + key + " " + str(world_db[key]) + "\n"
 218     string = string + mapsetter("MAP")()
 219     string = string + helper("ThingActions", "TA_ID")
 220     string = string + helper("ThingTypes", "TT_ID", {"TT_CORPSE_ID": False})
 221     for id in world_db["ThingTypes"]:
 222         string = string + "TT_ID " + str(id) + "\n" + "TT_CORPSE_ID " + \
 223                  str(world_db["ThingTypes"][id]["TT_CORPSE_ID"]) + "\n"
 224     string = string + helper("Things", "T_ID",
 225                              {"T_CARRIES": False, "carried": False,
 226                               "T_MEMMAP": mapsetter("T_MEMMAP"),
 227                               "T_MEMTHING": memthing, "fovmap": False,
 228                               "T_MEMDEPTHMAP": mapsetter("T_MEMDEPTHMAP")})
 229     for id in world_db["Things"]:
 230         if [] != world_db["Things"][id]["T_CARRIES"]:
 231             string = string + "T_ID " + str(id) + "\n"
 232             for carried_id in world_db["Things"][id]["T_CARRIES"]:
 233                 string = string + "T_CARRIES " + str(carried_id) + "\n"
 234     string = string + "SEED_RANDOMNESS " + str(rand.seed) + "\n" + \
 235              "WORLD_ACTIVE " + str(world_db["WORLD_ACTIVE"])
 236     atomic_write(io_db["path_save"], string)
 237
 238
 239 def obey_lines_in_file(path, name, do_record=False):
 240     """Call obey() on each line of path's file, use name in input prefix."""
 241     file = open(path, "r")
 242     line_n = 1
 243     for line in file.readlines():
 244         obey(line.rstrip(), name + "file line " + str(line_n),
 245              do_record=do_record)
 246         line_n = line_n + 1
 247     file.close()
 248
 249
 250 def parse_command_line_arguments():
 251     """Return settings values read from command line arguments."""
 252     parser = argparse.ArgumentParser()
 253     parser.add_argument('-s', nargs='?', type=int, dest='replay', const=1,
 254                         action='store')
 255     parser.add_argument('-l', nargs="?", const="save", dest='savefile',
 256                         action="store")
 257     parser.add_argument('-v', dest='verbose', action='store_true')
 258     opts, unknown = parser.parse_known_args()
 259     return opts
 260
 261
 262 def server_test():
 263     """Ensure valid server out file belonging to current process.
 264
 265     This is done by comparing io_db["teststring"] to what's found at the start
 266     of the current file at io_db["path_out"]. On failure, set
 267     io_db["kicked_by_rival"] and raise SystemExit.
 268     """
 269     if not os.access(io_db["path_out"], os.F_OK):
 270         raise SystemExit("Server output file has disappeared.")
 271     file = open(io_db["path_out"], "r")
 272     test = file.readline().rstrip("\n")
 273     file.close()
 274     if test != io_db["teststring"]:
 275         io_db["kicked_by_rival"] = True
 276         msg = "Server test string in server output file does not match. This" \
 277               " indicates that the current server process has been " \
 278               "superseded by another one."
 279         raise SystemExit(msg)
 280
 281
 282 def read_command():
 283     """Return next newline-delimited command from server in file.
 284
 285     Keep building return string until a newline is encountered. Pause between
 286     unsuccessful reads, and after too much waiting, run server_test().
 287     """
 288     wait_on_fail = 0.03333
 289     max_wait = 5
 290     now = time.time()
 291     command = ""
 292     while True:
 293         add = io_db["file_in"].readline()
 294         if len(add) > 0:
 295             command = command + add
 296             if len(command) > 0 and "\n" == command[-1]:
 297                 command = command[:-1]
 298                 break
 299         else:
 300             time.sleep(wait_on_fail)
 301             if now + max_wait < time.time():
 302                 server_test()
 303                 now = time.time()
 304     return command
 305
 306
 307 def try_worldstate_update():
 308     """Write worldstate file if io_db["worldstate_updateable"] is set."""
 309     if io_db["worldstate_updateable"]:
 310
 311         def draw_visible_Things(map, run):
 312             for id in world_db["Things"]:
 313                 type = world_db["Things"][id]["T_TYPE"]
 314                 consumable = world_db["ThingTypes"][type]["TT_CONSUMABLE"]
 315                 alive = world_db["ThingTypes"][type]["TT_LIFEPOINTS"]
 316                 if (0 == run and not consumable and not alive) \
 317                    or (1 == run and consumable and not alive) \
 318                    or (2 == run and alive):
 319                     y = world_db["Things"][id]["T_POSY"]
 320                     x = world_db["Things"][id]["T_POSX"]
 321                     fovflag = world_db["Things"][0]["fovmap"][(y * length) + x]
 322                     if 'v' == chr(fovflag):
 323                         c = world_db["ThingTypes"][type]["TT_SYMBOL"]
 324                         map[(y * length) + x] = ord(c)
 325
 326         def write_map(string, map):
 327             for i in range(length):
 328                 line = map[i * length:(i * length) + length].decode()
 329                 string = string + line + "\n"
 330             return string
 331
 332         inventory = ""
 333         if [] == world_db["Things"][0]["T_CARRIES"]:
 334             inventory = "(none)\n"
 335         else:
 336             for id in world_db["Things"][0]["T_CARRIES"]:
 337                 type_id = world_db["Things"][id]["T_TYPE"]
 338                 name = world_db["ThingTypes"][type_id]["TT_NAME"]
 339                 inventory = inventory + name + "\n"
 340         # 7DRL additions:  GOD_MOOD, GOD_FAVOR
 341         string = str(world_db["TURN"]) + "\n" + \
 342                  str(world_db["GOD_MOOD"]) + "\n" + \
 343                  str(world_db["GOD_FAVOR"]) + "\n" + \
 344                  str(world_db["Things"][0]["T_LIFEPOINTS"]) + "\n" + \
 345                  str(world_db["Things"][0]["T_SATIATION"]) + "\n" + \
 346                  inventory + "%\n" + \
 347                  str(world_db["Things"][0]["T_POSY"]) + "\n" + \
 348                  str(world_db["Things"][0]["T_POSX"]) + "\n" + \
 349                  str(world_db["MAP_LENGTH"]) + "\n"
 350         length = world_db["MAP_LENGTH"]
 351         fov = bytearray(b' ' * (length ** 2))
 352         for pos in range(length ** 2):
 353             if 'v' == chr(world_db["Things"][0]["fovmap"][pos]):
 354                 fov[pos] = world_db["MAP"][pos]
 355         for i in range(3):
 356             draw_visible_Things(fov, i)
 357         string = write_map(string, fov)
 358         mem = world_db["Things"][0]["T_MEMMAP"][:]
 359         for i in range(2):
 360             for mt in world_db["Things"][0]["T_MEMTHING"]:
 361                 consumable = world_db["ThingTypes"][mt[0]]["TT_CONSUMABLE"]
 362                 if (i == 0 and not consumable) or (i == 1 and consumable):
 363                     c = world_db["ThingTypes"][mt[0]]["TT_SYMBOL"]
 364                     mem[(mt[1] * length) + mt[2]] = ord(c)
 365         string = write_map(string, mem)
 366         atomic_write(io_db["path_worldstate"], string, delete=False)
 367         strong_write(io_db["file_out"], "WORLD_UPDATED\n")
 368         io_db["worldstate_updateable"] = False
 369
 370
 371 def replay_game():
 372     """Replay game from record file.
 373
 374     Use opts.replay as breakpoint turn to which to replay automatically before
 375     switching to manual input by non-meta commands in server input file
 376     triggering further reads of record file. Ensure opts.replay is at least 1.
 377     Run try_worldstate_update() before each interactive obey()/read_command().
 378     """
 379     if opts.replay < 1:
 380         opts.replay = 1
 381     print("Replay mode. Auto-replaying up to turn " + str(opts.replay) +
 382           " (if so late a turn is to be found).")
 383     if not os.access(io_db["path_record"], os.F_OK):
 384         raise SystemExit("No record file found to replay.")
 385     io_db["file_record"] = open(io_db["path_record"], "r")
 386     io_db["file_record"].prefix = "record file line "
 387     io_db["file_record"].line_n = 1
 388     while world_db["TURN"] < opts.replay:
 389         line = io_db["file_record"].readline()
 390         if "" == line:
 391             break
 392         obey(line.rstrip(), io_db["file_record"].prefix
 393              + str(io_db["file_record"].line_n))
 394         io_db["file_record"].line_n = io_db["file_record"].line_n + 1
 395     while True:
 396         try_worldstate_update()
 397         obey(read_command(), "in file", replay=True)
 398
 399
 400 def play_game():
 401     """Play game by server input file commands. Before, load save file found.
 402
 403     If no save file is found, a new world is generated from the commands in the
 404     world config plus a 'MAKE WORLD [current Unix timestamp]'. Record this
 405     command and all that follow via the server input file. Run
 406     try_worldstate_update() before each interactive obey()/read_command().
 407     """
 408     if os.access(io_db["path_save"], os.F_OK):
 409         obey_lines_in_file(io_db["path_save"], "save")
 410     else:
 411         if not os.access(io_db["path_worldconf"], os.F_OK):
 412             msg = "No world config file from which to start a new world."
 413             raise SystemExit(msg)
 414         obey_lines_in_file(io_db["path_worldconf"], "world config ",
 415                            do_record=True)
 416         obey("MAKE_WORLD " + str(int(time.time())), "in file", do_record=True)
 417     while True:
 418         try_worldstate_update()
 419         obey(read_command(), "in file", do_record=True)
 420
 421
 422 def make_map():
 423     """(Re-)make island map.
 424
 425     Let "~" represent water, "." land, "X" trees: Build island shape randomly,
 426     start with one land cell in the middle, then go into cycle of repeatedly
 427     selecting a random sea cell and transforming it into land if it is neighbor
 428     to land. The cycle ends when a land cell is due to be created at the map's
 429     border. Then put some trees on the map (TODO: more precise algorithm desc).
 430     """
 431     # 7DRL: Also add some ":" cells, and (not surrounded by trees!) "_" altar.
 432
 433     def is_neighbor(coordinates, type):
 434         y = coordinates[0]
 435         x = coordinates[1]
 436         length = world_db["MAP_LENGTH"]
 437         ind = y % 2
 438         diag_west = x + (ind > 0)
 439         diag_east = x + (ind < (length - 1))
 440         pos = (y * length) + x
 441         if (y > 0 and diag_east
 442             and type == chr(world_db["MAP"][pos - length + ind])) \
 443            or (x < (length - 1)
 444                and type == chr(world_db["MAP"][pos + 1])) \
 445            or (y < (length - 1) and diag_east
 446                and type == chr(world_db["MAP"][pos + length + ind])) \
 447            or (y > 0 and diag_west
 448                and type == chr(world_db["MAP"][pos - length - (not ind)])) \
 449            or (x > 0
 450                and type == chr(world_db["MAP"][pos - 1])) \
 451            or (y < (length - 1) and diag_west
 452                and type == chr(world_db["MAP"][pos + length - (not ind)])):
 453             return True
 454         return False
 455
 456     world_db["MAP"] = bytearray(b'~' * (world_db["MAP_LENGTH"] ** 2))
 457     length = world_db["MAP_LENGTH"]
 458     add_half_width = (not (length % 2)) * int(length / 2)
 459     world_db["MAP"][int((length ** 2) / 2) + add_half_width] = ord(".")
 460     while (1):
 461         y = rand.next() % length
 462         x = rand.next() % length
 463         pos = (y * length) + x
 464         if "~" == chr(world_db["MAP"][pos]) and is_neighbor((y, x), "."):
 465             if y == 0 or y == (length - 1) or x == 0 or x == (length - 1):
 466                 break
 467             world_db["MAP"][pos] = ord(".")
 468     n_trees = int((length ** 2) / 16)
 469     i_trees = 0
 470     while (i_trees <= n_trees):
 471         single_allowed = rand.next() % 32
 472         y = rand.next() % length
 473         x = rand.next() % length
 474         pos = (y * length) + x
 475         if "." == chr(world_db["MAP"][pos]) \
 476           and ((not single_allowed) or is_neighbor((y, x), "X")):
 477             world_db["MAP"][pos] = ord("X")
 478             i_trees += 1
 479     # This all-too-precise replica of the original C code misses iter_limit().
 480     n_colons = int((length ** 2) / 16)  # #
 481     i_colons = 0  # #
 482     while (i_colons <= n_colons):  # #
 483         single_allowed = rand.next() % 256  # #
 484         y = rand.next() % length  # #
 485         x = rand.next() % length  # #
 486         pos = (y * length) + x  # #
 487         if ("." == chr(world_db["MAP"][pos])  # #
 488           and ((not single_allowed) or is_neighbor((y, x), ":"))):  # #
 489             world_db["MAP"][pos] = ord(":")  # #
 490             i_colons += 1  # #
 491     altar_placed = False  # #
 492     while not altar_placed:  # #
 493         y = rand.next() % length  # #
 494         x = rand.next() % length  # #
 495         pos = (y * length) + x  # #
 496         if (("." == chr(world_db["MAP"][pos]  # #
 497              or ":" == chr(world_db["MAP"][pos]))
 498             and not is_neighbor((y, x), 'X'))):  # #
 499             world_db["MAP"][pos] = ord("_")  # #
 500             world_db["altar"] = (y, x)  # #
 501             altar_placed = True  # #
 502
 503
 504 def update_map_memory(t, age_map=True):
 505     """Update t's T_MEMMAP with what's in its FOV now,age its T_MEMMEPTHMAP."""
 506
 507     def age_some_memdepthmap_on_nonfov_cells():
 508         # OUTSOURCED FOR PERFORMANCE REASONS TO libplomrogue.so:
 509         # ord_v = ord("v")
 510         # ord_0 = ord("0")
 511         # ord_9 = ord("9")
 512         # for pos in [pos for pos in range(world_db["MAP_LENGTH"] ** 2)
 513         #             if not ord_v == t["fovmap"][pos]
 514         #             if ord_0 <= t["T_MEMDEPTHMAP"][pos]
 515         #             if ord_9 > t["T_MEMDEPTHMAP"][pos]
 516         #             if not rand.next() % (2 **
 517         #                                   (t["T_MEMDEPTHMAP"][pos] - 48))]:
 518         #     t["T_MEMDEPTHMAP"][pos] += 1
 519         memdepthmap = c_pointer_to_bytearray(t["T_MEMDEPTHMAP"])
 520         fovmap = c_pointer_to_bytearray(t["fovmap"])
 521         libpr.age_some_memdepthmap_on_nonfov_cells(memdepthmap, fovmap)
 522
 523     if not t["T_MEMMAP"]:
 524         t["T_MEMMAP"] = bytearray(b' ' * (world_db["MAP_LENGTH"] ** 2))
 525     if not t["T_MEMDEPTHMAP"]:
 526         t["T_MEMDEPTHMAP"] = bytearray(b' ' * (world_db["MAP_LENGTH"] ** 2))
 527     ord_v = ord("v")
 528     ord_0 = ord("0")
 529     ord_space = ord(" ")
 530     for pos in [pos for pos in range(world_db["MAP_LENGTH"] ** 2)
 531                 if ord_v == t["fovmap"][pos]]:
 532         t["T_MEMDEPTHMAP"][pos] = ord_0
 533         if ord_space == t["T_MEMMAP"][pos]:
 534             t["T_MEMMAP"][pos] = world_db["MAP"][pos]
 535     if age_map:
 536         age_some_memdepthmap_on_nonfov_cells()
 537     t["T_MEMTHING"] = [mt for mt in t["T_MEMTHING"]
 538                        if ord_v != t["fovmap"][(mt[1] * world_db["MAP_LENGTH"])
 539                                                + mt[2]]]
 540     for id in [id for id in world_db["Things"]
 541                if not world_db["Things"][id]["carried"]]:
 542         type = world_db["Things"][id]["T_TYPE"]
 543         if not world_db["ThingTypes"][type]["TT_LIFEPOINTS"]:
 544             y = world_db["Things"][id]["T_POSY"]
 545             x = world_db["Things"][id]["T_POSX"]
 546             if ord_v == t["fovmap"][(y * world_db["MAP_LENGTH"]) + x]:
 547                 t["T_MEMTHING"].append((type, y, x))
 548
 549
 550 def set_world_inactive():
 551     """Set world_db["WORLD_ACTIVE"] to 0 and remove worldstate file."""
 552     server_test()
 553     if os.access(io_db["path_worldstate"], os.F_OK):
 554         os.remove(io_db["path_worldstate"])
 555     world_db["WORLD_ACTIVE"] = 0
 556
 557
 558 def integer_test(val_string, min, max=None):
 559     """Return val_string if possible integer >= min and <= max, else None."""
 560     try:
 561         val = int(val_string)
 562         if val < min or (max is not None and val > max):
 563             raise ValueError
 564         return val
 565     except ValueError:
 566         msg = "Ignoring: Please use integer >= " + str(min)
 567         if max is not None:
 568             msg += " and <= " + str(max)
 569         msg += "."
 570         print(msg)
 571         return None
 572
 573
 574 def setter(category, key, min, max=None):
 575     """Build setter for world_db([category + "s"][id])[key] to >=min/<=max."""
 576     if category is None:
 577         def f(val_string):
 578             val = integer_test(val_string, min, max)
 579             if None != val:
 580                 world_db[key] = val
 581     else:
 582         if category == "Thing":
 583             id_store = command_tid
 584             decorator = test_Thing_id
 585         elif category == "ThingType":
 586             id_store = command_ttid
 587             decorator = test_ThingType_id
 588         elif category == "ThingAction":
 589             id_store = command_taid
 590             decorator = test_ThingAction_id
 591
 592         @decorator
 593         def f(val_string):
 594             val = integer_test(val_string, min, max)
 595             if None != val:
 596                 world_db[category + "s"][id_store.id][key] = val
 597     return f
 598
 599
 600 def build_fov_map(t):
 601     """Build Thing's FOV map."""
 602     t["fovmap"] = bytearray(b'v' * (world_db["MAP_LENGTH"] ** 2))
 603     fovmap = c_pointer_to_bytearray(t["fovmap"])
 604     map = c_pointer_to_bytearray(world_db["MAP"])
 605     if libpr.build_fov_map(t["T_POSY"], t["T_POSX"], fovmap, map):
 606         raise RuntimeError("Malloc error in build_fov_Map().")
 607
 608
 609 def log_help():
 610     """Send quick usage info to log."""
 611     strong_write(io_db["file_out"], "LOG "
 612                  + "Use 'w'/'e'/'s'/'d'/'x'/'c' to move, and 'w' to wait.\n")
 613     strong_write(io_db["file_out"], "LOG "
 614                  + "Use 'p' to pick up objects, and 'D' to drop them.\n")
 615     strong_write(io_db["file_out"], "LOG "
 616                  + "Some objects can be used (such as: eaten) by 'u' if "
 617                  + "they are in your inventory. "
 618                  + "Use 'UP'/'DOWN' to navigate the inventory.\n")
 619     strong_write(io_db["file_out"], "LOG "
 620                  + "Use 'l' to toggle 'look' mode (move an exploration cursor "
 621                  + "instead of the player over the map).\n")
 622     strong_write(io_db["file_out"], "LOG See README file for more details.\n")
 623     strong_write(io_db["file_out"], "LOG \n")
 624
 625
 626 def decrement_lifepoints(t):
 627     """Decrement t's lifepoints by 1, and if to zero, corpse it.
 628
 629     If t is the player avatar, only blank its fovmap, so that the client may
 630     still display memory data. On non-player things, erase fovmap and memory.
 631     Dying actors drop all their things.
 632     """
 633     # 7DRL: Also decrements God's mood; deaths heavily so.
 634     # 7DRL: Return 1 if death, else 0.
 635     t["T_LIFEPOINTS"] -= 1
 636     world_db["GOD_MOOD"] -= 1  # #
 637     if 0 == t["T_LIFEPOINTS"]:
 638         sadness = world_db["ThingTypes"][t["T_TYPE"]]["TT_LIFEPOINTS"]  # #
 639         world_db["GOD_MOOD"] -= sadness  # #
 640         for id in t["T_CARRIES"]:
 641             t["T_CARRIES"].remove(id)
 642             world_db["Things"][id]["T_POSY"] = t["T_POSY"]
 643             world_db["Things"][id]["T_POSX"] = t["T_POSX"]
 644             world_db["Things"][id]["carried"] = False
 645         t["T_TYPE"] = world_db["ThingTypes"][t["T_TYPE"]]["TT_CORPSE_ID"]
 646         if world_db["Things"][0] == t:
 647             t["fovmap"] = bytearray(b' ' * (world_db["MAP_LENGTH"] ** 2))
 648             strong_write(io_db["file_out"], "LOG You die.\n")
 649             strong_write(io_db["file_out"],
 650                          "LOG See README on how to start over.\n")
 651         else:
 652             t["fovmap"] = False
 653             t["T_MEMMAP"] = False
 654             t["T_MEMDEPTHMAP"] = False
 655             t["T_MEMTHING"] = []
 656         return sadness  # #
 657     return 0  # #
 658
 659
 660 def add_gods_favor(i): # #
 661     """"Add to GOD_FAVOR, multiplied with factor growing log. with GOD_MOOD."""
 662     def favor_multiplier(i):
 663         x = 100
 664         threshold = math.e * x
 665         mood = world_db["GOD_MOOD"]
 666         if i > 0:
 667             if mood > threshold:
 668                 i = i * math.log(mood / x)
 669             elif -mood > threshold:
 670                 i = i / math.log(-mood / x)
 671         elif i < 0:
 672             if -mood > threshold:
 673                 i = i * math.log(-mood / x)
 674             if mood > threshold:
 675                 i = i / math.log(mood / x)
 676         return int(i)
 677     world_db["GOD_FAVOR"] += favor_multiplier(i)
 678
 679
 680 def mv_yx_in_dir_legal(dir, y, x):
 681     """Wrapper around libpr.mv_yx_in_dir_legal to simplify its use."""
 682     dir_c = dir.encode("ascii")[0]
 683     test = libpr.mv_yx_in_dir_legal_wrap(dir_c, y, x)
 684     if -1 == test:
 685         raise RuntimeError("Too much wrapping in mv_yx_in_dir_legal_wrap()!")
 686     return (test, libpr.result_y(), libpr.result_x())
 687
 688
 689 def enter_altar():  # #
 690      """What happens when the player enters the altar."""
 691      if world_db["GAME_WON"]:
 692         strong_write(io_db["file_out"],
 693                      "LOG You step on a soul-less slab of stone.\n")
 694         return
 695      strong_write(io_db["file_out"], "LOG YOU ENTER SACRED GROUND.\n")
 696      if world_db["GOD_FAVOR"] > 9000:
 697          world_db["GAME_WON"] = 1
 698          strong_write(io_db["file_out"], "LOG The Island God speaks to you: "
 699                       + "\"You have proven yourself worthy of my respect. "
 700                       + "You were a good citizen to the island, and sometimes "
 701                       + "a better steward to its inhabitants than me. The "
 702                       + "island shall miss you when you leave. But you have "
 703                       + "earned the right to do so. Take this "
 704                       + world_db["ThingTypes"][world_db["SLIPPERS"]]["TT_NAME"]
 705                       + " and USE it when you please. It will take you to "
 706                       + "where you came from. (But do feel free to stay here "
 707                       + "as long as you like.)\"\n")
 708          id = id_setter(-1, "Things")
 709          world_db["Things"][id] = new_Thing(world_db["SLIPPERS"],
 710                                             world_db["altar"])
 711
 712
 713 def actor_wait(t):
 714     """Make t do nothing (but loudly, if player avatar)."""
 715     if t == world_db["Things"][0]:
 716         strong_write(io_db["file_out"], "LOG You wait.\n")
 717
 718
 719 def actor_move(t):
 720     """If passable, move/collide(=attack) thing into T_ARGUMENT's direction."""
 721     # 7DRL: Player wounding (worse: killing) others will lower God's favor.
 722     # 7DRL: Player entering the altar triggers enter_altar().
 723     passable = False
 724     move_result = mv_yx_in_dir_legal(chr(t["T_ARGUMENT"]),
 725                                      t["T_POSY"], t["T_POSX"])
 726     if 1 == move_result[0]:
 727         pos = (move_result[1] * world_db["MAP_LENGTH"]) + move_result[2]
 728         passable = ("." == chr(world_db["MAP"][pos]) or
 729                     ":" == chr(world_db["MAP"][pos]) or # #
 730                     "_" == chr(world_db["MAP"][pos])) # #
 731         hitted = [id for id in world_db["Things"]
 732                   if world_db["Things"][id] != t
 733                   if world_db["Things"][id]["T_LIFEPOINTS"]
 734                   if world_db["Things"][id]["T_POSY"] == move_result[1]
 735                   if world_db["Things"][id]["T_POSX"] == move_result[2]]
 736         if len(hitted):
 737             hit_id = hitted[0]
 738             if t == world_db["Things"][0]:
 739                 hitted_type = world_db["Things"][hit_id]["T_TYPE"]
 740                 hitted_name = world_db["ThingTypes"][hitted_type]["TT_NAME"]
 741                 strong_write(io_db["file_out"], "LOG You wound " + hitted_name
 742                                                 + ".\n")
 743                 add_gods_favor(-1)  # #
 744             elif 0 == hit_id:
 745                 hitter_name = world_db["ThingTypes"][t["T_TYPE"]]["TT_NAME"]
 746                 strong_write(io_db["file_out"], "LOG " + hitter_name +
 747                                                 " wounds you.\n")
 748             test = decrement_lifepoints(world_db["Things"][hit_id])  # #(test=)
 749             if test and t == world_db["Things"][0]:  # #
 750                 add_gods_favor(-test)  # #
 751             return
 752     dir = [dir for dir in directions_db
 753            if directions_db[dir] == chr(t["T_ARGUMENT"])][0]
 754     if passable:
 755         t["T_POSY"] = move_result[1]
 756         t["T_POSX"] = move_result[2]
 757         for id in t["T_CARRIES"]:
 758             world_db["Things"][id]["T_POSY"] = move_result[1]
 759             world_db["Things"][id]["T_POSX"] = move_result[2]
 760         build_fov_map(t)
 761         if t == world_db["Things"][0]:
 762             strong_write(io_db["file_out"], "LOG You move " + dir + ".\n")
 763             if (move_result[1] == world_db["altar"][0] and  # #
 764                 move_result[2] == world_db["altar"][1]):  # #
 765                 enter_altar()  # #
 766     elif t == world_db["Things"][0]:
 767         strong_write(io_db["file_out"], "LOG You fail to move " + dir + ".\n")
 768
 769
 770 def actor_pick_up(t):
 771     """Make t pick up (topmost?) Thing from ground into inventory."""
 772     # Topmostness is actually not defined so far. Picks most nutritious Thing.
 773     # 7DRL: Non-player picking up player-dropped consumable -> GOD_FAVOR gain.
 774     used_slots = len(t["T_CARRIES"]) # #
 775     if used_slots < world_db["ThingTypes"][t["T_TYPE"]]["TT_STORAGE"]: # #
 776         ids = [id for id in world_db["Things"] if world_db["Things"][id] != t
 777                if not world_db["Things"][id]["carried"]
 778                if world_db["Things"][id]["T_POSY"] == t["T_POSY"]
 779                if world_db["Things"][id]["T_POSX"] == t["T_POSX"]]
 780         if len(ids):
 781             highest_id = ids[0]
 782             nutritious = 0
 783             for id in ids:
 784                 type = world_db["Things"][id]["T_TYPE"]
 785                 if world_db["ThingTypes"][type]["TT_CONSUMABLE"] > nutritious:
 786                     nutritious = world_db["ThingTypes"][type]["TT_CONSUMABLE"]
 787                     highest_id = id
 788             world_db["Things"][highest_id]["carried"] = True
 789             if (t != world_db["Things"][0] and  # #
 790                 world_db["Things"][highest_id]["T_PLAYERDROP"]):  # #
 791                 x = world_db["Things"][highest_id]["T_TYPE"]
 792                 score = world_db["ThingTypes"][x]["TT_CONSUMABLE"] / 32  # #
 793                 add_gods_favor(score)  # #
 794                 world_db["Things"][highest_id]["T_PLAYERDROP"] = 0  # #
 795             t["T_CARRIES"].append(highest_id)
 796             if t == world_db["Things"][0]:
 797                 strong_write(io_db["file_out"], "LOG You pick up an object.\n")
 798         elif t == world_db["Things"][0]:
 799             err = "You try to pick up an object, but there is none."
 800             strong_write(io_db["file_out"], "LOG " + err + "\n")
 801     elif t == world_db["Things"][0]: # #
 802         strong_write(io_db["file_out"], "LOG Can't pick up object: " + # #
 803                                         "No storage room to carry more.\n") # #
 804
 805
 806 def actor_drop(t):
 807     """Make t rop Thing from inventory to ground indexed by T_ARGUMENT."""
 808     # TODO: Handle case where T_ARGUMENT matches nothing.
 809     if len(t["T_CARRIES"]):
 810         id = t["T_CARRIES"][t["T_ARGUMENT"]]
 811         t["T_CARRIES"].remove(id)
 812         world_db["Things"][id]["carried"] = False
 813         if t == world_db["Things"][0]:
 814             strong_write(io_db["file_out"], "LOG You drop an object.\n")
 815             world_db["Things"][id]["T_PLAYERDROP"] = 1  # #
 816     elif t == world_db["Things"][0]:
 817         err = "You try to drop an object, but you own none."
 818         strong_write(io_db["file_out"], "LOG " + err + "\n")
 819
 820
 821 def actor_use(t):
 822     """Make t use (for now: consume) T_ARGUMENT-indexed Thing in inventory."""
 823     # TODO: Handle case where T_ARGUMENT matches nothing.
 824     # 7DLR: Handle SLIPPERS-type Thing use.
 825     if len(t["T_CARRIES"]):
 826         id = t["T_CARRIES"][t["T_ARGUMENT"]]
 827         type = world_db["Things"][id]["T_TYPE"]
 828         if type == world_db["SLIPPERS"]:  # #
 829             if t == world_db["Things"][0]:  # #
 830                 strong_write(io_db["file_out"], "LOG You use the "  # #
 831                              + world_db["ThingTypes"][type]["TT_NAME"]  # #
 832                              + ". It glows in wondrous colors, and emits "  # #
 833                              + "a sound as if from a dying cat. The "  # #
 834                              + "Island God laughs.\n")  # #
 835             t["T_LIFEPOINTS"] = 1  # #
 836             decrement_lifepoints(t)  # #
 837         elif world_db["ThingTypes"][type]["TT_CONSUMABLE"]:
 838             t["T_CARRIES"].remove(id)
 839             del world_db["Things"][id]
 840             t["T_SATIATION"] += world_db["ThingTypes"][type]["TT_CONSUMABLE"]
 841             if t == world_db["Things"][0]:
 842                 strong_write(io_db["file_out"],
 843                              "LOG You consume this object.\n")
 844         elif t == world_db["Things"][0]:
 845             strong_write(io_db["file_out"],
 846                          "LOG You try to use this object, but fail.\n")
 847     elif t == world_db["Things"][0]:
 848         strong_write(io_db["file_out"],
 849                      "LOG You try to use an object, but you own none.\n")
 850
 851
 852 def thingproliferation(t, prol_map):
 853     """To chance of 1/TT_PROLIFERATE,create  t offspring in open neighbor cell.
 854
 855     Naturally only works with TT_PROLIFERATE > 0. The neighbor cell must be be
 856     marked "." in prol_map. If there are several map cell candidates, one is
 857     selected randomly.
 858     """
 859     # 7DRL: success increments God's mood
 860     # 7DRL: Things proliferate only on ":" ground.
 861     prolscore = world_db["ThingTypes"][t["T_TYPE"]]["TT_PROLIFERATE"]
 862     if prolscore and (1 == prolscore or 1 == (rand.next() % prolscore)):
 863         candidates = []
 864         for dir in [directions_db[key] for key in directions_db]:
 865             mv_result = mv_yx_in_dir_legal(dir, t["T_POSY"], t["T_POSX"])
 866             if mv_result[0] and ord(":") == prol_map[mv_result[1]  # #
 867             # if mv_result[0] and ord(".") == prol_map[mv_result[1]
 868                                                      * world_db["MAP_LENGTH"]
 869                                                      + mv_result[2]]:
 870                 candidates.append((mv_result[1], mv_result[2]))
 871         if len(candidates):
 872             i = rand.next() % len(candidates)
 873             id = id_setter(-1, "Things")
 874             newT = new_Thing(t["T_TYPE"], (candidates[i][0], candidates[i][1]))
 875             world_db["Things"][id] = newT
 876             world_db["GOD_MOOD"] += 1  # #
 877
 878
 879 def try_healing(t):
 880     """Grow t's HP to a 1/32 chance if < HP max, satiation > 0, and waiting.
 881
 882     On success, decrease satiation score by 32.
 883     """
 884     # 7DRL: Successful heals increment God's mood.
 885     if t["T_SATIATION"] > 0 \
 886        and t["T_LIFEPOINTS"] < \
 887            world_db["ThingTypes"][t["T_TYPE"]]["TT_LIFEPOINTS"] \
 888        and 0 == (rand.next() % 31) \
 889        and t["T_COMMAND"] == [id for id in world_db["ThingActions"]
 890                               if world_db["ThingActions"][id]["TA_NAME"] ==
 891                                  "wait"][0]:
 892         t["T_LIFEPOINTS"] += 1
 893         world_db["GOD_MOOD"] += 1  # #
 894         t["T_SATIATION"] -= 32
 895         if t == world_db["Things"][0]:
 896             strong_write(io_db["file_out"], "LOG You heal.\n")
 897
 898
 899 def hunger(t):
 900     """Decrement t's satiation,dependent on it trigger lifepoint dec chance."""
 901     if t["T_SATIATION"] > -32768:
 902         t["T_SATIATION"] -= 1
 903     testbase = t["T_SATIATION"] if t["T_SATIATION"] >= 0 else -t["T_SATIATION"]
 904     if not world_db["ThingTypes"][t["T_TYPE"]]["TT_LIFEPOINTS"]:
 905         raise RuntimeError("A thing that should not hunger is hungering.")
 906     stomach = int(32767 / world_db["ThingTypes"][t["T_TYPE"]]["TT_LIFEPOINTS"])
 907     if int(int(testbase / stomach) / ((rand.next() % stomach) + 1)):
 908         if t == world_db["Things"][0]:
 909             strong_write(io_db["file_out"], "LOG You suffer from hunger.\n")
 910         decrement_lifepoints(t)
 911
 912
 913 def get_dir_to_target(t, filter):
 914     """Try to set T_COMMAND/T_ARGUMENT for move to "filter"-determined target.
 915
 916     The path-wise nearest target is chosen, via the shortest available path.
 917     Target must not be t. On succcess, return positive value, else False.
 918     Filters:
 919     "a": Thing in FOV is below a certain distance, animate, but of ThingType
 920          that is not t's, and starts out weaker than t is; build path as
 921          avoiding things of t's ThingType
 922     "f": neighbor cell (not inhabited by any animate Thing) further away from
 923          animate Thing not further than x steps away and in FOV and of a
 924          ThingType that is not t's, and starts out stronger or as strong as t
 925          is currently; or (cornered), if no such flight cell, but Thing of
 926          above criteria is too near,1 a cell closer to it, or, if less near,
 927          just wait
 928     "c": Thing in memorized map is consumable
 929     "s": memory map cell with greatest-reachable degree of unexploredness
 930     """
 931
 932     def zero_score_map_where_char_on_memdepthmap(c):
 933         # OUTSOURCED FOR PERFORMANCE REASONS TO libplomrogue.so:
 934         # for i in [i for i in range(world_db["MAP_LENGTH"] ** 2)
 935         #           if t["T_MEMDEPTHMAP"][i] == mem_depth_c[0]]:
 936         #     set_map_score(i, 0)
 937         map = c_pointer_to_bytearray(t["T_MEMDEPTHMAP"])
 938         if libpr.zero_score_map_where_char_on_memdepthmap(c, map):
 939             raise RuntimeError("No score map allocated for "
 940                                "zero_score_map_where_char_on_memdepthmap().")
 941
 942     def set_map_score(pos, score):
 943         test = libpr.set_map_score(pos, score)
 944         if test:
 945             raise RuntimeError("No score map allocated for set_map_score().")
 946
 947     def get_map_score(pos):
 948         result = libpr.get_map_score(pos)
 949         if result < 0:
 950             raise RuntimeError("No score map allocated for get_map_score().")
 951         return result
 952
 953     def seeing_thing():
 954         if t["fovmap"] and ("a" == filter or "f" == filter):
 955             for id in world_db["Things"]:
 956                 Thing = world_db["Things"][id]
 957                 if Thing != t and Thing["T_LIFEPOINTS"] and \
 958                    t["T_TYPE"] != Thing["T_TYPE"] and \
 959                    'v' == chr(t["fovmap"][(Thing["T_POSY"]
 960                                           * world_db["MAP_LENGTH"])
 961                                           + Thing["T_POSX"]]):
 962                     ThingType = world_db["ThingTypes"][Thing["T_TYPE"]]
 963                     if ("f" == filter and ThingType["TT_LIFEPOINTS"] >=
 964                                           t["T_LIFEPOINTS"]) \
 965                        or ("a" == filter and ThingType["TT_LIFEPOINTS"] <
 966                                              t["T_LIFEPOINTS"]):
 967                         return True
 968         elif t["T_MEMMAP"] and "c" == filter:
 969             for mt in t["T_MEMTHING"]:
 970                 if ' ' != chr(t["T_MEMMAP"][(mt[1] * world_db["MAP_LENGTH"])
 971                                          + mt[2]]) \
 972                    and world_db["ThingTypes"][mt[0]]["TT_CONSUMABLE"]:
 973                     return True
 974         return False
 975
 976     def set_cells_passable_on_memmap_to_65534_on_scoremap():
 977         # OUTSOURCED FOR PERFORMANCE REASONS TO libplomrogue.so:
 978         # ord_dot = ord(".")
 979         # memmap = t["T_MEMMAP"]
 980         # for i in [i for i in range(world_db["MAP_LENGTH"] ** 2)
 981         #            if ord_dot == memmap[i]]:
 982         #     set_map_score(i, 65534) # i.e. 65535-1
 983         map = c_pointer_to_bytearray(t["T_MEMMAP"])
 984         if libpr.set_cells_passable_on_memmap_to_65534_on_scoremap(map):
 985             raise RuntimeError("No score map allocated for "
 986                         "set_cells_passable_on_memmap_to_65534_on_scoremap().")
 987
 988     def init_score_map():
 989         test = libpr.init_score_map()
 990         if test:
 991             raise RuntimeError("Malloc error in init_score_map().")
 992         ord_v = ord("v")
 993         ord_blank = ord(" ")
 994         set_cells_passable_on_memmap_to_65534_on_scoremap()
 995         if "a" == filter:
 996             for id in world_db["Things"]:
 997                 Thing = world_db["Things"][id]
 998                 pos = Thing["T_POSY"] * world_db["MAP_LENGTH"] \
 999                       + Thing["T_POSX"]
1000                 if t != Thing and Thing["T_LIFEPOINTS"] and \
1001                    t["T_TYPE"] != Thing["T_TYPE"] and \
1002                    ord_v == t["fovmap"][pos] and \
1003                    t["T_LIFEPOINTS"] > \
1004                    world_db["ThingTypes"][Thing["T_TYPE"]]["TT_LIFEPOINTS"]:
1005                     set_map_score(pos, 0)
1006                 elif t["T_TYPE"] == Thing["T_TYPE"]:
1007                     set_map_score(pos, 65535)
1008         elif "f" == filter:
1009             for id in [id for id in world_db["Things"]
1010                        if world_db["Things"][id]["T_LIFEPOINTS"]]:
1011                 Thing = world_db["Things"][id]
1012                 pos = Thing["T_POSY"] * world_db["MAP_LENGTH"] \
1013                       + Thing["T_POSX"]
1014                 if t["T_TYPE"] != Thing["T_TYPE"] and \
1015                    ord_v == t["fovmap"][pos] and \
1016                    t["T_LIFEPOINTS"] <= \
1017                    world_db["ThingTypes"][Thing["T_TYPE"]]["TT_LIFEPOINTS"]:
1018                     set_map_score(pos, 0)
1019         elif "c" == filter:
1020             for mt in [mt for mt in t["T_MEMTHING"]
1021                        if ord_blank != t["T_MEMMAP"][mt[1]
1022                                                     * world_db["MAP_LENGTH"]
1023                                                     + mt[2]]
1024                        if world_db["ThingTypes"][mt[0]]["TT_CONSUMABLE"]]:
1025                 set_map_score(mt[1] * world_db["MAP_LENGTH"] + mt[2], 0)
1026         elif "s" == filter:
1027             zero_score_map_where_char_on_memdepthmap(mem_depth_c[0])
1028
1029     def rand_target_dir(neighbors, cmp, dirs):
1030         candidates = []
1031         n_candidates = 0
1032         for i in range(len(dirs)):
1033             if cmp == neighbors[i]:
1034                 candidates.append(dirs[i])
1035                 n_candidates += 1
1036         return candidates[rand.next() % n_candidates] if n_candidates else 0
1037
1038     def get_neighbor_scores(dirs, eye_pos):
1039         scores = []
1040         if libpr.ready_neighbor_scores(eye_pos):
1041             raise RuntimeError("No score map allocated for " +
1042                                "ready_neighbor_scores.()")
1043         for i in range(len(dirs)):
1044             scores.append(libpr.get_neighbor_score(i))
1045         return scores
1046
1047     def get_dir_from_neighbors():
1048         dir_to_target = False
1049         dirs = "edcxsw"
1050         eye_pos = t["T_POSY"] * world_db["MAP_LENGTH"] + t["T_POSX"]
1051         neighbors = get_neighbor_scores(dirs, eye_pos)
1052         if "f" == filter:
1053             inhabited = [world_db["Things"][id]["T_POSY"]
1054                          * world_db["MAP_LENGTH"]
1055                          + world_db["Things"][id]["T_POSX"]
1056                          for id in world_db["Things"]
1057                          if world_db["Things"][id]["T_LIFEPOINTS"]]
1058             for i in range(len(dirs)):
1059                 mv_yx_in_dir_legal(dirs[i], t["T_POSY"], t["T_POSX"])
1060                 pos_cmp = libpr.result_y() * world_db["MAP_LENGTH"] \
1061                           + libpr.result_x()
1062                 for pos in [pos for pos in inhabited if pos == pos_cmp]:
1063                     neighbors[i] = 65535
1064                     break
1065         minmax_start = 0 if "f" == filter else 65535 - 1
1066         minmax_neighbor = minmax_start
1067         for i in range(len(dirs)):
1068             if ("f" == filter and get_map_score(eye_pos) < neighbors[i] and
1069                 minmax_neighbor < neighbors[i] and 65535 != neighbors[i]) \
1070                or ("f" != filter and minmax_neighbor > neighbors[i]):
1071                 minmax_neighbor = neighbors[i]
1072         if minmax_neighbor != minmax_start:
1073             dir_to_target = rand_target_dir(neighbors, minmax_neighbor, dirs)
1074         if "f" == filter:
1075             if not dir_to_target:
1076                 if 1 == get_map_score(eye_pos):
1077                     dir_to_target = rand_target_dir(neighbors, 0, dirs)
1078                 elif 3 >= get_map_score(eye_pos):
1079                     t["T_COMMAND"] = [id for id in world_db["ThingActions"]
1080                                       if
1081                                       world_db["ThingActions"][id]["TA_NAME"]
1082                                          == "wait"][0]
1083                     return 1
1084             elif dir_to_target and 3 < get_map_score(eye_pos):
1085                 dir_to_target = 0
1086         elif "a" == filter and 10 <= get_map_score(eye_pos):
1087             dir_to_target = 0
1088         return dir_to_target
1089
1090     dir_to_target = False
1091     mem_depth_c = b' '
1092     run_i = 9 + 1 if "s" == filter else 1
1093     while run_i and not dir_to_target and ("s" == filter or seeing_thing()):
1094         run_i -= 1
1095         init_score_map()
1096         mem_depth_c = b'9' if b' ' == mem_depth_c \
1097                            else bytes([mem_depth_c[0] - 1])
1098         if libpr.dijkstra_map():
1099             raise RuntimeError("No score map allocated for dijkstra_map().")
1100         dir_to_target = get_dir_from_neighbors()
1101         libpr.free_score_map()
1102         if dir_to_target and str == type(dir_to_target):
1103             t["T_COMMAND"] = [id for id in world_db["ThingActions"]
1104                               if world_db["ThingActions"][id]["TA_NAME"]
1105                                  == "move"][0]
1106             t["T_ARGUMENT"] = ord(dir_to_target)
1107     return dir_to_target
1108
1109
1110 def standing_on_consumable(t):
1111     """Return True/False whether t is standing on a consumable."""
1112     for id in [id for id in world_db["Things"] if world_db["Things"][id] != t
1113                if world_db["Things"][id]["T_POSY"] == t["T_POSY"]
1114                if world_db["Things"][id]["T_POSX"] == t["T_POSX"]
1115                if world_db["ThingTypes"][world_db["Things"][id]["T_TYPE"]]
1116                           ["TT_CONSUMABLE"]]:
1117         return True
1118     return False
1119
1120
1121 def get_inventory_slot_to_consume(t):
1122     """Return slot Id of strongest consumable in t's inventory, else -1."""
1123     cmp_consumability = 0
1124     selection = -1
1125     i = 0
1126     for id in t["T_CARRIES"]:
1127         type = world_db["Things"][id]["T_TYPE"]
1128         if world_db["ThingTypes"][type]["TT_CONSUMABLE"] > cmp_consumability:
1129             cmp_consumability = world_db["ThingTypes"][type]["TT_CONSUMABLE"]
1130             selection = i
1131         i += 1
1132     return selection
1133
1134
1135 def ai(t):
1136     """Determine next command/argment for actor t via AI algorithms.
1137
1138     AI will look for, and move towards, enemies (animate Things not of their
1139     own ThingType); if they see none, they will consume consumables in their
1140     inventory; if there are none, they will pick up what they stand on if they
1141     stand on consumables; if they stand on none, they will move towards the
1142     next consumable they see or remember on the map; if they see or remember
1143     none, they will explore parts of the map unseen since ever or for at least
1144     one turn; if there is nothing to explore, they will simply wait.
1145     """
1146     # 7DRL add: Don't pick up or search things when inventory is full.
1147     t["T_COMMAND"] = [id for id in world_db["ThingActions"]
1148                       if world_db["ThingActions"][id]["TA_NAME"] == "wait"][0]
1149     if not get_dir_to_target(t, "f"):
1150         sel = get_inventory_slot_to_consume(t)
1151         if -1 != sel:
1152             t["T_COMMAND"] = [id for id in world_db["ThingActions"]
1153                               if world_db["ThingActions"][id]["TA_NAME"]
1154                                  == "use"][0]
1155             t["T_ARGUMENT"] = sel
1156         elif standing_on_consumable(t) \
1157              and (len(t["T_CARRIES"]) < # #
1158                  world_db["ThingTypes"][t["T_TYPE"]]["TT_STORAGE"]): # #
1159             t["T_COMMAND"] = [id for id in world_db["ThingActions"]
1160                               if world_db["ThingActions"][id]["TA_NAME"]
1161                                  == "pick_up"][0]
1162         elif (not
1163               (len(t["T_CARRIES"]) < # #
1164                 world_db["ThingTypes"][t["T_TYPE"]]["TT_STORAGE"] # #
1165                and get_dir_to_target(t, "c"))) and \
1166              (not get_dir_to_target(t, "a")):
1167             get_dir_to_target(t, "s")
1168
1169
1170 def turn_over():
1171     """Run game world and its inhabitants until new player input expected."""
1172     id = 0
1173     whilebreaker = False
1174     while world_db["Things"][0]["T_LIFEPOINTS"]:
1175         proliferable_map = world_db["MAP"][:]
1176         for id in [id for id in world_db["Things"]
1177                    if not world_db["Things"][id]["carried"]]:
1178             y = world_db["Things"][id]["T_POSY"]
1179             x = world_db["Things"][id]["T_POSX"]
1180             proliferable_map[y * world_db["MAP_LENGTH"] + x] = ord('X')
1181         for id in [id for id in world_db["Things"]]:  # Only what's from start!
1182             if not id in world_db["Things"] or \
1183                world_db["Things"][id]["carried"]:   # May have been consumed or
1184                 continue                            # picked up during turn …
1185             Thing = world_db["Things"][id]
1186             if Thing["T_LIFEPOINTS"]:
1187                 if not Thing["T_COMMAND"]:
1188                     update_map_memory(Thing)
1189                     if 0 == id:
1190                         whilebreaker = True
1191                         break
1192                     ai(Thing)
1193                 try_healing(Thing)
1194                 hunger(Thing)
1195                 if Thing["T_LIFEPOINTS"]:
1196                     Thing["T_PROGRESS"] += 1
1197                     taid = [a for a in world_db["ThingActions"]
1198                               if a == Thing["T_COMMAND"]][0]
1199                     ThingAction = world_db["ThingActions"][taid]
1200                     if Thing["T_PROGRESS"] == ThingAction["TA_EFFORT"]:
1201                         eval("actor_" + ThingAction["TA_NAME"])(Thing)
1202                         Thing["T_COMMAND"] = 0
1203                         Thing["T_PROGRESS"] = 0
1204             thingproliferation(Thing, proliferable_map)
1205         if whilebreaker:
1206             break
1207         world_db["TURN"] += 1
1208
1209
1210 def new_Thing(type, pos=(0, 0)):
1211     """Return Thing of type T_TYPE, with fovmap if alive and world active."""
1212     thing = {
1213         "T_LIFEPOINTS": world_db["ThingTypes"][type]["TT_LIFEPOINTS"],
1214         "T_ARGUMENT": 0,
1215         "T_PROGRESS": 0,
1216         "T_SATIATION": 0,
1217         "T_COMMAND": 0,
1218         "T_PLAYERDROP": 0,  # #
1219         "T_TYPE": type,
1220         "T_POSY": pos[0],
1221         "T_POSX": pos[1],
1222         "T_CARRIES": [],
1223         "carried": False,
1224         "T_MEMTHING": [],
1225         "T_MEMMAP": False,
1226         "T_MEMDEPTHMAP": False,
1227         "fovmap": False
1228     }
1229     if world_db["WORLD_ACTIVE"] and thing["T_LIFEPOINTS"]:
1230         build_fov_map(thing)
1231     return thing
1232
1233
1234 def id_setter(id, category, id_store=False, start_at_1=False):
1235     """Set ID of object of category to manipulate ID unused? Create new one.
1236
1237     The ID is stored as id_store.id (if id_store is set). If the integer of the
1238     input is valid (if start_at_1, >= 0, else >= -1), but <0 or (if start_at_1)
1239     <1, calculate new ID: lowest unused ID >=0 or (if start_at_1) >= 1. None is
1240     always returned when no new object is created, otherwise the new object's
1241     ID.
1242     """
1243     min = 0 if start_at_1 else -1
1244     if str == type(id):
1245         id = integer_test(id, min)
1246     if None != id:
1247         if id in world_db[category]:
1248             if id_store:
1249                 id_store.id = id
1250             return None
1251         else:
1252             if (start_at_1 and 0 == id) \
1253                or ((not start_at_1) and (id < 0)):
1254                 id = 0 if start_at_1 else -1
1255                 while 1:
1256                     id = id + 1
1257                     if id not in world_db[category]:
1258                         break
1259             if id_store:
1260                 id_store.id = id
1261     return id
1262
1263
1264 def command_ping():
1265     """Send PONG line to server output file."""
1266     strong_write(io_db["file_out"], "PONG\n")
1267
1268
1269 def command_quit():
1270     """Abort server process."""
1271     if None == opts.replay:
1272         if world_db["WORLD_ACTIVE"]:
1273             save_world()
1274         atomic_write(io_db["path_record"], io_db["record_chunk"], do_append=True)
1275     raise SystemExit("received QUIT command")
1276
1277
1278 def command_thingshere(str_y, str_x):
1279     """Write to out file list of Things known to player at coordinate y, x."""
1280     if world_db["WORLD_ACTIVE"]:
1281         y = integer_test(str_y, 0, 255)
1282         x = integer_test(str_x, 0, 255)
1283         length = world_db["MAP_LENGTH"]
1284         if None != y and None != x and y < length and x < length:
1285             pos = (y * world_db["MAP_LENGTH"]) + x
1286             strong_write(io_db["file_out"], "THINGS_HERE START\n")
1287             if "v" == chr(world_db["Things"][0]["fovmap"][pos]):
1288                 for id in world_db["Things"]:
1289                     if y == world_db["Things"][id]["T_POSY"] \
1290                        and x == world_db["Things"][id]["T_POSX"] \
1291                        and not world_db["Things"][id]["carried"]:
1292                         type = world_db["Things"][id]["T_TYPE"]
1293                         name = world_db["ThingTypes"][type]["TT_NAME"]
1294                         strong_write(io_db["file_out"], name + "\n")
1295             else:
1296                 for mt in world_db["Things"][0]["T_MEMTHING"]:
1297                     if y == mt[1] and x == mt[2]:
1298                         name = world_db["ThingTypes"][mt[0]]["TT_NAME"]
1299                         strong_write(io_db["file_out"], name + "\n")
1300             strong_write(io_db["file_out"], "THINGS_HERE END\n")
1301         else:
1302             print("Ignoring: Invalid map coordinates.")
1303     else:
1304         print("Ignoring: Command only works on existing worlds.")
1305
1306
1307 def play_commander(action, args=False):
1308     """Setter for player's T_COMMAND and T_ARGUMENT, then calling turn_over().
1309
1310     T_ARGUMENT is set to direction char if action=="wait",or 8-bit int if args.
1311     """
1312
1313     def set_command():
1314         id = [x for x in world_db["ThingActions"]
1315                 if world_db["ThingActions"][x]["TA_NAME"] == action][0]
1316         world_db["Things"][0]["T_COMMAND"] = id
1317         turn_over()
1318
1319     def set_command_and_argument_int(str_arg):
1320         val = integer_test(str_arg, 0, 255)
1321         if None != val:
1322             world_db["Things"][0]["T_ARGUMENT"] = val
1323             set_command()
1324
1325     def set_command_and_argument_movestring(str_arg):
1326         if str_arg in directions_db:
1327             world_db["Things"][0]["T_ARGUMENT"] = ord(directions_db[str_arg])
1328             set_command()
1329         else:
1330             print("Ignoring: Argument must be valid direction string.")
1331
1332     if action == "move":
1333         return set_command_and_argument_movestring
1334     elif args:
1335         return set_command_and_argument_int
1336     else:
1337         return set_command
1338
1339
1340 def command_seedrandomness(seed_string):
1341     """Set rand seed to int(seed_string)."""
1342     val = integer_test(seed_string, 0, 4294967295)
1343     if None != val:
1344         rand.seed = val
1345
1346
1347 def command_makeworld(seed_string):
1348     """(Re-)build game world, i.e. map, things, to a new turn 1 from seed.
1349
1350     Seed rand with seed. Do more only with a "wait" ThingAction and
1351     world["PLAYER_TYPE"] matching ThingType of TT_START_NUMBER > 0. Then,
1352     world_db["Things"] emptied, call make_map() and set
1353     world_db["WORLD_ACTIVE"], world_db["TURN"] to 1. Build new Things
1354     according to ThingTypes' TT_START_NUMBERS, with Thing of ID 0 to ThingType
1355     of ID = world["PLAYER_TYPE"]. Place Things randomly, and actors not on each
1356     other. Init player's memory map. Write "NEW_WORLD" line to out file.
1357     Call log_help().
1358     """
1359
1360     # def free_pos(plant=False):
1361     def free_pos(plant=False):  # #
1362         i = 0
1363         while 1:
1364             err = "Space to put thing on too hard to find. Map too small?"
1365             while 1:
1366                 y = rand.next() % world_db["MAP_LENGTH"]
1367                 x = rand.next() % world_db["MAP_LENGTH"]
1368                 pos = y * world_db["MAP_LENGTH"] + x;
1369                 if (not plant  # #
1370                     and "." == chr(world_db["MAP"][pos])) \
1371                    or ":" == chr(world_db["MAP"][pos]):  # #
1372                     break
1373                 i += 1
1374                 if i == 65535:
1375                     raise SystemExit(err)
1376             # Replica of C code, wrongly ignores animatedness of new Thing.
1377             pos_clear = (0 == len([id for id in world_db["Things"]
1378                                    if world_db["Things"][id]["T_LIFEPOINTS"]
1379                                    if world_db["Things"][id]["T_POSY"] == y
1380                                    if world_db["Things"][id]["T_POSX"] == x]))
1381             if pos_clear:
1382                 break
1383         return (y, x)
1384
1385     val = integer_test(seed_string, 0, 4294967295)
1386     if None == val:
1387         return
1388     rand.seed = val
1389     player_will_be_generated = False
1390     playertype = world_db["PLAYER_TYPE"]
1391     for ThingType in world_db["ThingTypes"]:
1392         if playertype == ThingType:
1393             if 0 < world_db["ThingTypes"][ThingType]["TT_START_NUMBER"]:
1394                 player_will_be_generated = True
1395             break
1396     if not player_will_be_generated:
1397         print("Ignoring: No player type with start number >0 defined.")
1398         return
1399     wait_action = False
1400     for ThingAction in world_db["ThingActions"]:
1401         if "wait" == world_db["ThingActions"][ThingAction]["TA_NAME"]:
1402             wait_action = True
1403     if not wait_action:
1404         print("Ignoring: No thing action with name 'wait' defined.")
1405         return
1406     if not world_db["SLIPPERS"] in world_db["ThingTypes"]:  # #
1407         print("Ignoring: No valid SLIPPERS set.")  # #
1408         return  # #
1409     world_db["Things"] = {}
1410     make_map()
1411     world_db["WORLD_ACTIVE"] = 1
1412     world_db["TURN"] = 1
1413     for i in range(world_db["ThingTypes"][playertype]["TT_START_NUMBER"]):
1414         id = id_setter(-1, "Things")
1415         world_db["Things"][id] = new_Thing(playertype, free_pos())
1416     if not world_db["Things"][0]["fovmap"]:
1417         empty_fovmap = bytearray(b" " * world_db["MAP_LENGTH"] ** 2)
1418         world_db["Things"][0]["fovmap"] = empty_fovmap
1419     update_map_memory(world_db["Things"][0])
1420     for type in world_db["ThingTypes"]:
1421         for i in range(world_db["ThingTypes"][type]["TT_START_NUMBER"]):
1422             if type != playertype:
1423                 id = id_setter(-1, "Things")
1424                 plantness = world_db["ThingTypes"][type]["TT_PROLIFERATE"]  # #
1425                 world_db["Things"][id] = new_Thing(type, free_pos(plantness))
1426     strong_write(io_db["file_out"], "NEW_WORLD\n")
1427     log_help()
1428
1429
1430 def command_maplength(maplength_string):
1431     """Redefine map length. Invalidate map, therefore lose all things on it."""
1432     val = integer_test(maplength_string, 1, 256)
1433     if None != val:
1434         world_db["MAP_LENGTH"] = val
1435         world_db["MAP"] = False
1436         set_world_inactive()
1437         world_db["Things"] = {}
1438         libpr.set_maplength(val)
1439
1440
1441 def command_worldactive(worldactive_string):
1442     """Toggle world_db["WORLD_ACTIVE"] if possible.
1443
1444     An active world can always be set inactive. An inactive world can only be
1445     set active with a "wait" ThingAction, and a player Thing (of ID 0), and a
1446     map. On activation, rebuild all Things' FOVs, and the player's map memory.
1447     Also call log_help().
1448     """
1449     # 7DRL: altar must be on map, and (valid) SLIPPERS must be set for world
1450     # activation.
1451     val = integer_test(worldactive_string, 0, 1)
1452     if None != val:
1453         if 0 != world_db["WORLD_ACTIVE"]:
1454             if 0 == val:
1455                 set_world_inactive()
1456             else:
1457                 print("World already active.")
1458         elif 0 == world_db["WORLD_ACTIVE"]:
1459             wait_exists = False
1460             for ThingAction in world_db["ThingActions"]:
1461                 if "wait" == world_db["ThingActions"][ThingAction]["TA_NAME"]:
1462                     wait_exists = True
1463                     break
1464             player_exists = False
1465             for Thing in world_db["Things"]:
1466                 if 0 == Thing:
1467                     player_exists = True
1468                     break
1469             valid_slippers = world_db["SLIPPERS"] in world_db["ThingTypes"]  # #
1470             altar_found = False  # #
1471             if world_db["MAP"]:  # #
1472                 pos = world_db["MAP"].find(b'_')  # #
1473                 if pos > 0:  # #
1474                     y = int(pos / world_db["MAP_LENGTH"])  # #
1475                     x = pos % world_db["MAP_LENGTH"]  # #
1476                     world_db["altar"] = (y, x)  # #
1477                     altar_found = True  # #
1478             if wait_exists and player_exists and world_db["MAP"] \
1479                 and altar_found and valid_slippers:  # #
1480                 for id in world_db["Things"]:
1481                     if world_db["Things"][id]["T_LIFEPOINTS"]:
1482                         build_fov_map(world_db["Things"][id])
1483                         if 0 == id:
1484                             update_map_memory(world_db["Things"][id], False)
1485                 if not world_db["Things"][0]["T_LIFEPOINTS"]:
1486                     empty_fovmap = bytearray(b" " * world_db["MAP_LENGTH"] ** 2)
1487                     world_db["Things"][0]["fovmap"] = empty_fovmap
1488                 world_db["WORLD_ACTIVE"] = 1
1489                 log_help()
1490             else:
1491                 print("Ignoring: Not all conditions for world activation met.")
1492
1493
1494 def command_slippers(str_int):  # #
1495     """Set SLIPPERS, but deactivate world if not in ThingTypes."""
1496     val = integer_test(str_int, 0)
1497     if None != val:
1498         world_db["SLIPPERS"] = val
1499         if world_db["WORLD_ACTIVE"] and \
1500            world_db["SLIPPERS"] not in world_db["ThingTypes"]:
1501             world_db["WORLD_ACTIVE"] = 0
1502             print("SLIPPERS matches no known ThingTypes, deactivating world.")
1503
1504
1505 def test_for_id_maker(object, category):
1506     """Return decorator testing for object having "id" attribute."""
1507     def decorator(f):
1508         def helper(*args):
1509             if hasattr(object, "id"):
1510                 f(*args)
1511             else:
1512                 print("Ignoring: No " + category +
1513                       " defined to manipulate yet.")
1514         return helper
1515     return decorator
1516
1517
1518 def command_tid(id_string):
1519     """Set ID of Thing to manipulate. ID unused? Create new one.
1520
1521     Default new Thing's type to the first available ThingType, others: zero.
1522     """
1523     id = id_setter(id_string, "Things", command_tid)
1524     if None != id:
1525         if world_db["ThingTypes"] == {}:
1526             print("Ignoring: No ThingType to settle new Thing in.")
1527             return
1528         type = list(world_db["ThingTypes"].keys())[0]
1529         world_db["Things"][id] = new_Thing(type)
1530
1531
1532 test_Thing_id = test_for_id_maker(command_tid, "Thing")
1533
1534
1535 @test_Thing_id
1536 def command_tcommand(str_int):
1537     """Set T_COMMAND of selected Thing."""
1538     val = integer_test(str_int, 0)
1539     if None != val:
1540         if 0 == val or val in world_db["ThingActions"]:
1541             world_db["Things"][command_tid.id]["T_COMMAND"] = val
1542         else:
1543             print("Ignoring: ThingAction ID belongs to no known ThingAction.")
1544
1545
1546 @test_Thing_id
1547 def command_ttype(str_int):
1548     """Set T_TYPE of selected Thing."""
1549     val = integer_test(str_int, 0)
1550     if None != val:
1551         if val in world_db["ThingTypes"]:
1552             world_db["Things"][command_tid.id]["T_TYPE"] = val
1553         else:
1554             print("Ignoring: ThingType ID belongs to no known ThingType.")
1555
1556
1557 @test_Thing_id
1558 def command_tcarries(str_int):
1559     """Append int(str_int) to T_CARRIES of selected Thing.
1560
1561     The ID int(str_int) must not be of the selected Thing, and must belong to a
1562     Thing with unset "carried" flag. Its "carried" flag will be set on owning.
1563     """
1564     val = integer_test(str_int, 0)
1565     if None != val:
1566         if val == command_tid.id:
1567             print("Ignoring: Thing cannot carry itself.")
1568         elif val in world_db["Things"] \
1569              and not world_db["Things"][val]["carried"]:
1570             world_db["Things"][command_tid.id]["T_CARRIES"].append(val)
1571             world_db["Things"][val]["carried"] = True
1572         else:
1573             print("Ignoring: Thing not available for carrying.")
1574     # Note that the whole carrying structure is different from the C version:
1575     # Carried-ness is marked by a "carried" flag, not by Things containing
1576     # Things internally.
1577
1578
1579 @test_Thing_id
1580 def command_tmemthing(str_t, str_y, str_x):
1581     """Add (int(str_t), int(str_y), int(str_x)) to selected Thing's T_MEMTHING.
1582
1583     The type must fit to an existing ThingType, and the position into the map.
1584     """
1585     type = integer_test(str_t, 0)
1586     posy = integer_test(str_y, 0, 255)
1587     posx = integer_test(str_x, 0, 255)
1588     if None != type and None != posy and None != posx:
1589         if type not in world_db["ThingTypes"] \
1590            or posy >= world_db["MAP_LENGTH"] or posx >= world_db["MAP_LENGTH"]:
1591             print("Ignoring: Illegal value for thing type or position.")
1592         else:
1593             memthing = (type, posy, posx)
1594             world_db["Things"][command_tid.id]["T_MEMTHING"].append(memthing)
1595
1596
1597 def setter_map(maptype):
1598     """Set (world or Thing's) map of maptype's int(str_int)-th line to mapline.
1599
1600     If no map of maptype exists yet, initialize it with ' ' bytes first.
1601     """
1602
1603     def valid_map_line(str_int, mapline):
1604         val = integer_test(str_int, 0, 255)
1605         if None != val:
1606             if val >= world_db["MAP_LENGTH"]:
1607                 print("Illegal value for map line number.")
1608             elif len(mapline) != world_db["MAP_LENGTH"]:
1609                 print("Map line length is unequal map width.")
1610             else:
1611                 return val
1612         return None
1613
1614     def nonThingMap_helper(str_int, mapline):
1615         val = valid_map_line(str_int, mapline)
1616         if None != val:
1617             length = world_db["MAP_LENGTH"]
1618             if not world_db["MAP"]:
1619                 map = bytearray(b' ' * (length ** 2))
1620             else:
1621                 map = world_db["MAP"]
1622             map[val * length:(val * length) + length] = mapline.encode()
1623             if not world_db["MAP"]:
1624                 world_db["MAP"] = map
1625
1626     @test_Thing_id
1627     def ThingMap_helper(str_int, mapline):
1628         val = valid_map_line(str_int, mapline)
1629         if None != val:
1630             length = world_db["MAP_LENGTH"]
1631             if not world_db["Things"][command_tid.id][maptype]:
1632                 map = bytearray(b' ' * (length ** 2))
1633             else:
1634                 map = world_db["Things"][command_tid.id][maptype]
1635             map[val * length:(val * length) + length] = mapline.encode()
1636             if not world_db["Things"][command_tid.id][maptype]:
1637                 world_db["Things"][command_tid.id][maptype] = map
1638
1639     return nonThingMap_helper if maptype == "MAP" else ThingMap_helper
1640
1641
1642 def setter_tpos(axis):
1643     """Generate setter for T_POSX or  T_POSY of selected Thing.
1644
1645     If world is active, rebuilds animate things' fovmap, player's memory map.
1646     """
1647     @test_Thing_id
1648     def helper(str_int):
1649         val = integer_test(str_int, 0, 255)
1650         if None != val:
1651             if val < world_db["MAP_LENGTH"]:
1652                 world_db["Things"][command_tid.id]["T_POS" + axis] = val
1653                 if world_db["WORLD_ACTIVE"] \
1654                    and world_db["Things"][command_tid.id]["T_LIFEPOINTS"]:
1655                     build_fov_map(world_db["Things"][command_tid.id])
1656                     if 0 == command_tid.id:
1657                         update_map_memory(world_db["Things"][command_tid.id])
1658             else:
1659                 print("Ignoring: Position is outside of map.")
1660     return helper
1661
1662
1663 def command_ttid(id_string):
1664     """Set ID of ThingType to manipulate. ID unused? Create new one.
1665
1666     Default new ThingType's TT_SYMBOL to "?", TT_CORPSE_ID to self, others: 0.
1667     """
1668     id = id_setter(id_string, "ThingTypes", command_ttid)
1669     if None != id:
1670         world_db["ThingTypes"][id] = {
1671             "TT_NAME": "(none)",
1672             "TT_CONSUMABLE": 0,
1673             "TT_LIFEPOINTS": 0,
1674             "TT_PROLIFERATE": 0,
1675             "TT_START_NUMBER": 0,
1676             "TT_STORAGE": 0, # #
1677             "TT_SYMBOL": "?",
1678             "TT_CORPSE_ID": id
1679         }
1680
1681
1682 test_ThingType_id = test_for_id_maker(command_ttid, "ThingType")
1683
1684
1685 @test_ThingType_id
1686 def command_ttname(name):
1687     """Set TT_NAME of selected ThingType."""
1688     world_db["ThingTypes"][command_ttid.id]["TT_NAME"] = name
1689
1690
1691 @test_ThingType_id
1692 def command_ttsymbol(char):
1693     """Set TT_SYMBOL of selected ThingType. """
1694     if 1 == len(char):
1695         world_db["ThingTypes"][command_ttid.id]["TT_SYMBOL"] = char
1696     else:
1697         print("Ignoring: Argument must be single character.")
1698
1699
1700 @test_ThingType_id
1701 def command_ttcorpseid(str_int):
1702     """Set TT_CORPSE_ID of selected ThingType."""
1703     val = integer_test(str_int, 0)
1704     if None != val:
1705         if val in world_db["ThingTypes"]:
1706             world_db["ThingTypes"][command_ttid.id]["TT_CORPSE_ID"] = val
1707         else:
1708             print("Ignoring: Corpse ID belongs to no known ThignType.")
1709
1710
1711 def command_taid(id_string):
1712     """Set ID of ThingAction to manipulate. ID unused? Create new one.
1713
1714     Default new ThingAction's TA_EFFORT to 1, its TA_NAME to "wait".
1715     """
1716     id = id_setter(id_string, "ThingActions", command_taid, True)
1717     if None != id:
1718         world_db["ThingActions"][id] = {
1719             "TA_EFFORT": 1,
1720             "TA_NAME": "wait"
1721         }
1722
1723
1724 test_ThingAction_id = test_for_id_maker(command_taid, "ThingAction")
1725
1726
1727 @test_ThingAction_id
1728 def command_taname(name):
1729     """Set TA_NAME of selected ThingAction.
1730
1731     The name must match a valid thing action function. If after the name
1732     setting no ThingAction with name "wait" remains, call set_world_inactive().
1733     """
1734     if name == "wait" or name == "move" or name == "use" or name == "drop" \
1735        or name == "pick_up":
1736         world_db["ThingActions"][command_taid.id]["TA_NAME"] = name
1737         if 1 == world_db["WORLD_ACTIVE"]:
1738             wait_defined = False
1739             for id in world_db["ThingActions"]:
1740                 if "wait" == world_db["ThingActions"][id]["TA_NAME"]:
1741                     wait_defined = True
1742                     break
1743             if not wait_defined:
1744                 set_world_inactive()
1745     else:
1746         print("Ignoring: Invalid action name.")
1747     # In contrast to the original,naming won't map a function to a ThingAction.
1748
1749
1750 def command_ai():
1751     """Call ai() on player Thing, then turn_over()."""
1752     ai(world_db["Things"][0])
1753     turn_over()
1754
1755
1756 """Commands database.
1757
1758 Map command start tokens to ([0]) number of expected command arguments, ([1])
1759 the command's meta-ness (i.e. is it to be written to the record file, is it to
1760 be ignored in replay mode if read from server input file), and ([2]) a function
1761 to be called on it.
1762 """
1763 commands_db = {
1764     "QUIT": (0, True, command_quit),
1765     "PING": (0, True, command_ping),
1766     "THINGS_HERE": (2, True, command_thingshere),
1767     "MAKE_WORLD": (1, False, command_makeworld),
1768     "SEED_RANDOMNESS": (1, False, command_seedrandomness),
1769     "TURN": (1, False, setter(None, "TURN", 0, 65535)),
1770     "GOD_MOOD": (1, False, setter(None, "GOD_MOOD", -32768, 32767)),  # #
1771     "GOD_FAVOR": (1, False, setter(None, "GOD_FAVOR", -32768, 32767)),  # #
1772     "PLAYER_TYPE": (1, False, setter(None, "PLAYER_TYPE", 0)),
1773     "MAP_LENGTH": (1, False, command_maplength),
1774     "WORLD_ACTIVE": (1, False, command_worldactive),
1775     "MAP": (2, False, setter_map("MAP")),
1776     "GAME_WON": (1, False, setter(None, "GAME_WON", 0, 1)),  # #
1777     "SLIPPERS": (1, False, command_slippers),  # #
1778     "TA_ID": (1, False, command_taid),
1779     "TA_EFFORT": (1, False, setter("ThingAction", "TA_EFFORT", 0, 255)),
1780     "TA_NAME": (1, False, command_taname),
1781     "TT_ID": (1, False, command_ttid),
1782     "TT_NAME": (1, False, command_ttname),
1783     "TT_SYMBOL": (1, False, command_ttsymbol),
1784     "TT_CORPSE_ID": (1, False, command_ttcorpseid),
1785     "TT_CONSUMABLE": (1, False, setter("ThingType", "TT_CONSUMABLE",
1786                                        0, 65535)),
1787     "TT_START_NUMBER": (1, False, setter("ThingType", "TT_START_NUMBER",
1788                                          0, 255)),
1789     "TT_PROLIFERATE": (1, False, setter("ThingType", "TT_PROLIFERATE",
1790                                         0, 65535)),
1791     "TT_LIFEPOINTS": (1, False, setter("ThingType", "TT_LIFEPOINTS", 0, 255)),
1792     "TT_STORAGE": (1, False, setter("ThingType", "TT_STORAGE", 0, 255)),  # #
1793     "T_ID": (1, False, command_tid),
1794     "T_ARGUMENT": (1, False, setter("Thing", "T_ARGUMENT", 0, 255)),
1795     "T_PROGRESS": (1, False, setter("Thing", "T_PROGRESS", 0, 255)),
1796     "T_LIFEPOINTS": (1, False, setter("Thing", "T_LIFEPOINTS", 0, 255)),
1797     "T_SATIATION": (1, False, setter("Thing", "T_SATIATION", -32768, 32767)),
1798     "T_COMMAND": (1, False, command_tcommand),
1799     "T_TYPE": (1, False, command_ttype),
1800     "T_CARRIES": (1, False, command_tcarries),
1801     "T_MEMMAP": (2, False, setter_map("T_MEMMAP")),
1802     "T_MEMDEPTHMAP": (2, False, setter_map("T_MEMDEPTHMAP")),
1803     "T_MEMTHING": (3, False, command_tmemthing),
1804     "T_POSY": (1, False, setter_tpos("Y")),
1805     "T_POSX": (1, False, setter_tpos("X")),
1806     "T_PLAYERDROP": (1, False, setter("Thing", "T_PLAYERDROP", 0, 1)),  # #
1807     "wait": (0, False, play_commander("wait")),
1808     "move": (1, False, play_commander("move")),
1809     "pick_up": (0, False, play_commander("pick_up")),
1810     "drop": (1, False, play_commander("drop", True)),
1811     "use": (1, False, play_commander("use", True)),
1812     "ai": (0, False, command_ai)
1813 }
1814 # TODO: Unhandled cases: (Un-)killing animates (esp. player!) with T_LIFEPOINTS.
1815
1816
1817 """World state database. With sane default values. (Randomness is in rand.)"""
1818 world_db = {
1819     "TURN": 0,
1820     "MAP_LENGTH": 64,
1821     "PLAYER_TYPE": 0,
1822     "WORLD_ACTIVE": 0,
1823     "GOD_MOOD": 0,  # #
1824     "GOD_FAVOR": 0,  # #
1825     "MAP": False,
1826     "GAME_WON": 0,  # #
1827     "SLIPPERS": 0,  # #
1828     "ThingActions": {},
1829     "ThingTypes": {},
1830     "Things": {}
1831 }
1832
1833 """Mapping of direction names to internal direction chars."""
1834 directions_db = {"east": "d", "south-east": "c", "south-west": "x",
1835                  "west": "s", "north-west": "w", "north-east": "e"}
1836
1837 """File IO database."""
1838 io_db = {
1839     "path_save": "save",
1840     "path_record": "record_save",
1841     "path_worldconf": "confserver/world",
1842     "path_server": "server/",
1843     "path_in": "server/in",
1844     "path_out": "server/out",
1845     "path_worldstate": "server/worldstate",
1846     "tmp_suffix": "_tmp",
1847     "kicked_by_rival": False,
1848     "worldstate_updateable": False
1849 }
1850
1851
1852 try:
1853     libpr = prep_library()
1854     rand = RandomnessIO()
1855     opts = parse_command_line_arguments()
1856     if opts.savefile:
1857         io_db["path_save"] = opts.savefile
1858         io_db["path_record"] = "record_" + opts.savefile
1859     setup_server_io()
1860     if opts.verbose:
1861         io_db["verbose"] = True
1862     if None != opts.replay:
1863         replay_game()
1864     else:
1865         play_game()
1866 except SystemExit as exit:
1867     print("ABORTING: " + exit.args[0])
1868 except:
1869     print("SOMETHING WENT WRONG IN UNEXPECTED WAYS")
1870     raise
1871 finally:
1872     cleanup_server_io()