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

   1 import argparse
   2 import errno
   3 import os
   4 import shlex
   5 import shutil
   6 import time
   7 import ctypes
   8
   9
  10 class RandomnessIO:
  11     """"Interface to libplomrogue's pseudo-randomness generator."""
  12
  13     def set_seed(self, seed):
  14         libpr.seed_rrand(1, seed)
  15
  16     def get_seed(self):
  17         return libpr.seed_rrand(0, 0)
  18
  19     def next(self):
  20         return libpr.rrand()
  21
  22     seed = property(get_seed, set_seed)
  23
  24
  25 def prep_library():
  26     """Prepare ctypes library at ./libplomrogue.so"""
  27     libpath = ("./libplomrogue.so")
  28     if not os.access(libpath, os.F_OK):
  29         raise SystemExit("No library " + libpath + ", run ./compile.sh first?")
  30     libpr = ctypes.cdll.LoadLibrary(libpath)
  31     libpr.seed_rrand.argtypes = [ctypes.c_uint8, ctypes.c_uint32]
  32     libpr.seed_rrand.restype = ctypes.c_uint32
  33     libpr.rrand.argtypes = []
  34     libpr.rrand.restype = ctypes.c_uint16
  35     libpr.set_maplength.argtypes = [ctypes.c_uint16]
  36     libpr.mv_yx_in_dir_legal_wrap.argtypes = [ctypes.c_char, ctypes.c_uint8,
  37                                               ctypes.c_uint8]
  38     libpr.mv_yx_in_dir_legal_wrap.restype = ctypes.c_uint8
  39     libpr.result_y.restype = ctypes.c_uint8
  40     libpr.result_x.restype = ctypes.c_uint8
  41     libpr.set_maplength(world_db["MAP_LENGTH"])
  42     libpr.build_fov_map.argtypes = [ctypes.c_uint8, ctypes.c_uint8,
  43                                     ctypes.c_char_p, ctypes.c_char_p]
  44     libpr.build_fov_map.restype = ctypes.c_uint8
  45     return libpr
  46
  47
  48 def strong_write(file, string):
  49     """Apply write(string), flush(), and os.fsync() to file."""
  50     file.write(string)
  51     file.flush()
  52     os.fsync(file)
  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     os.makedirs(io_db["path_server"], exist_ok=True)
  73     io_db["file_out"] = open(io_db["path_out"], "w")
  74     strong_write(io_db["file_out"], io_db["teststring"] + "\n")
  75     if os.access(io_db["path_in"], os.F_OK):
  76         os.remove(io_db["path_in"])
  77     io_db["file_in"] = open(io_db["path_in"], "w")
  78     io_db["file_in"].close()
  79     io_db["file_in"] = open(io_db["path_in"], "r")
  80     detect_atomic_leftover(io_db["path_save"], io_db["tmp_suffix"])
  81     detect_atomic_leftover(io_db["path_record"], io_db["tmp_suffix"])
  82
  83
  84 def cleanup_server_io():
  85     """Close and (if io_db["kicked_by_rival"] false) remove files in io_db."""
  86     def helper(file_key, path_key):
  87         if file_key in io_db:
  88             io_db[file_key].close()
  89             if not io_db["kicked_by_rival"] \
  90                and os.access(io_db[path_key], os.F_OK):
  91                 os.remove(io_db[path_key])
  92     helper("file_out", "path_out")
  93     helper("file_in", "path_in")
  94     helper("file_worldstate", "path_worldstate")
  95     if "file_record" in io_db:
  96         io_db["file_record"].close()
  97
  98
  99 def obey(command, prefix, replay=False, do_record=False):
 100     """Call function from commands_db mapped to command's first token.
 101
 102     Tokenize command string with shlex.split(comments=True). If replay is set,
 103     a non-meta command from the commands_db merely triggers obey() on the next
 104     command from the records file. If not, non-meta commands set
 105     io_db["worldstate_updateable"] to world_db["WORLD_EXISTS"], and, if
 106     do_record is set, are recorded via record(), and save_world() is called.
 107     The prefix string is inserted into the server's input message between its
 108     beginning 'input ' & ':'. All activity is preceded by a server_test() call.
 109     """
 110     server_test()
 111     print("input " + prefix + ": " + command)
 112     try:
 113         tokens = shlex.split(command, comments=True)
 114     except ValueError as err:
 115         print("Can't tokenize command string: " + str(err) + ".")
 116         return
 117     if len(tokens) > 0 and tokens[0] in commands_db \
 118        and len(tokens) == commands_db[tokens[0]][0] + 1:
 119         if commands_db[tokens[0]][1]:
 120             commands_db[tokens[0]][2](*tokens[1:])
 121         elif replay:
 122             print("Due to replay mode, reading command as 'go on in record'.")
 123             line = io_db["file_record"].readline()
 124             if len(line) > 0:
 125                 obey(line.rstrip(), io_db["file_record"].prefix
 126                      + str(io_db["file_record"].line_n))
 127                 io_db["file_record"].line_n = io_db["file_record"].line_n + 1
 128             else:
 129                 print("Reached end of record file.")
 130         else:
 131             commands_db[tokens[0]][2](*tokens[1:])
 132             if do_record:
 133                 record(command)
 134                 save_world()
 135             io_db["worldstate_updateable"] = world_db["WORLD_ACTIVE"]
 136     elif 0 != len(tokens):
 137         print("Invalid command/argument, or bad number of tokens.")
 138
 139
 140 def atomic_write(path, text, do_append=False):
 141     """Atomic write of text to file at path, appended if do_append is set."""
 142     path_tmp = path + io_db["tmp_suffix"]
 143     mode = "w"
 144     if do_append:
 145         mode = "a"
 146         if os.access(path, os.F_OK):
 147             shutil.copyfile(path, path_tmp)
 148     file = open(path_tmp, mode)
 149     strong_write(file, text)
 150     file.close()
 151     if os.access(path, os.F_OK):
 152         os.remove(path)
 153     os.rename(path_tmp, path)
 154
 155
 156 def record(command):
 157     """Append command string plus newline to record file. (Atomic.)"""
 158     # This misses some optimizations from the original record(), namely only
 159     # finishing the atomic write with expensive flush() and fsync() every 15
 160     # seconds unless explicitely forced. Implement as needed.
 161     atomic_write(io_db["path_record"], command + "\n", do_append=True)
 162
 163
 164 def save_world():
 165     """Save all commands needed to reconstruct current world state."""
 166     # TODO: Misses same optimizations as record() from the original record().
 167
 168     def quote(string):
 169         string = string.replace("\u005C", '\u005C\u005C')
 170         return '"' + string.replace('"', '\u005C"') + '"'
 171
 172     def mapsetter(key):
 173         def helper(id):
 174             string = ""
 175             if world_db["Things"][id][key]:
 176                 map = world_db["Things"][id][key]
 177                 length = world_db["MAP_LENGTH"]
 178                 for i in range(length):
 179                     line = map[i * length:(i * length) + length].decode()
 180                     string = string + key + " " + str(i) + " " + quote(line) \
 181                              + "\n"
 182             return string
 183         return helper
 184
 185     def memthing(id):
 186         string = ""
 187         for memthing in world_db["Things"][id]["T_MEMTHING"]:
 188             string = string + "T_MEMTHING " + str(memthing[0]) + " " + \
 189                      str(memthing[1]) + " " + str(memthing[2]) + "\n"
 190         return string
 191
 192     def helper(category, id_string, special_keys={}):
 193         string = ""
 194         for id in world_db[category]:
 195             string = string + id_string + " " + str(id) + "\n"
 196             for key in world_db[category][id]:
 197                 if not key in special_keys:
 198                     x = world_db[category][id][key]
 199                     argument = quote(x) if str == type(x) else str(x)
 200                     string = string + key + " " + argument + "\n"
 201                 elif special_keys[key]:
 202                     string = string + special_keys[key](id)
 203         return string
 204
 205     string = ""
 206     for key in world_db:
 207         if dict != type(world_db[key]) and key != "MAP":
 208             string = string + key + " " + str(world_db[key]) + "\n"
 209     string = string + helper("ThingActions", "TA_ID")
 210     string = string + helper("ThingTypes", "TT_ID", {"TT_CORPSE_ID": False})
 211     for id in world_db["ThingTypes"]:
 212         string = string + "TT_ID " + str(id) + "\n" + "TT_CORPSE_ID " + \
 213                  str(world_db["ThingTypes"][id]["TT_CORPSE_ID"]) + "\n"
 214     string = string + helper("Things", "T_ID",
 215                              {"T_CARRIES": False, "carried": False,
 216                               "T_MEMMAP": mapsetter("T_MEMMAP"),
 217                               "T_MEMTHING": memthing, "fovmap": False,
 218                               "T_MEMDEPTHMAP": mapsetter("T_MEMDEPTHMAP")})
 219     for id in world_db["Things"]:
 220         if [] != world_db["Things"][id]["T_CARRIES"]:
 221             string = string + "T_ID " + str(id) + "\n"
 222             for carried_id in world_db["Things"][id]["T_CARRIES"]:
 223                 string = string + "T_CARRIES " + str(carried_id) + "\n"
 224     string = string + "SEED_RANDOMNESS " + str(rand.seed) + "\n" + \
 225              "WORLD_ACTIVE " + str(world_db["WORLD_ACTIVE"])
 226     atomic_write(io_db["path_save"], string)
 227
 228
 229 def obey_lines_in_file(path, name, do_record=False):
 230     """Call obey() on each line of path's file, use name in input prefix."""
 231     file = open(path, "r")
 232     line_n = 1
 233     for line in file.readlines():
 234         obey(line.rstrip(), name + "file line " + str(line_n),
 235              do_record=do_record)
 236         line_n = line_n + 1
 237     file.close()
 238
 239
 240 def parse_command_line_arguments():
 241     """Return settings values read from command line arguments."""
 242     parser = argparse.ArgumentParser()
 243     parser.add_argument('-s', nargs='?', type=int, dest='replay', const=1,
 244                         action='store')
 245     opts, unknown = parser.parse_known_args()
 246     return opts
 247
 248
 249 def server_test():
 250     """Ensure valid server out file belonging to current process.
 251
 252     This is done by comparing io_db["teststring"] to what's found at the start
 253     of the current file at io_db["path_out"]. On failure, set
 254     io_db["kicked_by_rival"] and raise SystemExit.
 255     """
 256     if not os.access(io_db["path_out"], os.F_OK):
 257         raise SystemExit("Server output file has disappeared.")
 258     file = open(io_db["path_out"], "r")
 259     test = file.readline().rstrip("\n")
 260     file.close()
 261     if test != io_db["teststring"]:
 262         io_db["kicked_by_rival"] = True
 263         msg = "Server test string in server output file does not match. This" \
 264               " indicates that the current server process has been " \
 265               "superseded by another one."
 266         raise SystemExit(msg)
 267
 268
 269 def read_command():
 270     """Return next newline-delimited command from server in file.
 271
 272     Keep building return string until a newline is encountered. Pause between
 273     unsuccessful reads, and after too much waiting, run server_test().
 274     """
 275     wait_on_fail = 0.03333
 276     max_wait = 5
 277     now = time.time()
 278     command = ""
 279     while True:
 280         add = io_db["file_in"].readline()
 281         if len(add) > 0:
 282             command = command + add
 283             if len(command) > 0 and "\n" == command[-1]:
 284                 command = command[:-1]
 285                 break
 286         else:
 287             time.sleep(wait_on_fail)
 288             if now + max_wait < time.time():
 289                 server_test()
 290                 now = time.time()
 291     return command
 292
 293
 294 def try_worldstate_update():
 295     """Write worldstate file if io_db["worldstate_updateable"] is set."""
 296     if io_db["worldstate_updateable"]:
 297
 298         def draw_visible_Things(map, run):
 299             for id in world_db["Things"]:
 300                 type = world_db["Things"][id]["T_TYPE"]
 301                 consumable = world_db["ThingTypes"][type]["TT_CONSUMABLE"]
 302                 alive = world_db["ThingTypes"][type]["TT_LIFEPOINTS"]
 303                 if (0 == run and not consumable and not alive) \
 304                    or (1 == run and consumable and not alive) \
 305                    or (2 == run and alive):
 306                     y = world_db["Things"][id]["T_POSY"]
 307                     x = world_db["Things"][id]["T_POSX"]
 308                     fovflag = world_db["Things"][0]["fovmap"][(y * length) + x]
 309                     if 'v' == chr(fovflag):
 310                         c = world_db["ThingTypes"][type]["TT_SYMBOL"]
 311                         map[(y * length) + x] = ord(c)
 312
 313         def write_map(string, map):
 314             for i in range(length):
 315                 line = map[i * length:(i * length) + length].decode()
 316                 string = string + line + "\n"
 317             return string
 318
 319         inventory = ""
 320         if [] == world_db["Things"][0]["T_CARRIES"]:
 321             inventory = "(none)\n"
 322         else:
 323             for id in world_db["Things"][0]["T_CARRIES"]:
 324                 type_id = world_db["Things"][id]["T_TYPE"]
 325                 name = world_db["ThingTypes"][type_id]["TT_NAME"]
 326                 inventory = inventory + name + "\n"
 327         string = str(world_db["TURN"]) + "\n" + \
 328                  str(world_db["Things"][0]["T_LIFEPOINTS"]) + "\n" + \
 329                  str(world_db["Things"][0]["T_SATIATION"]) + "\n" + \
 330                  inventory + "%\n" + \
 331                  str(world_db["Things"][0]["T_POSY"]) + "\n" + \
 332                  str(world_db["Things"][0]["T_POSX"]) + "\n" + \
 333                  str(world_db["MAP_LENGTH"]) + "\n"
 334         length = world_db["MAP_LENGTH"]
 335         fov = bytearray(b' ' * (length ** 2))
 336         for pos in range(length ** 2):
 337             if 'v' == chr(world_db["Things"][0]["fovmap"][pos]):
 338                 fov[pos] = world_db["MAP"][pos]
 339         for i in range(3):
 340             draw_visible_Things(fov, i)
 341         string = write_map(string, fov)
 342         mem = world_db["Things"][0]["T_MEMMAP"][:]
 343         for i in range(2):
 344             for mt in world_db["Things"][0]["T_MEMTHING"]:
 345                 consumable = world_db["ThingTypes"][mt[0]]["TT_CONSUMABLE"]
 346                 if (i == 0 and not consumable) or (i == 1 and consumable):
 347                     c = world_db["ThingTypes"][mt[0]]["TT_SYMBOL"]
 348                     mem[(mt[1] * length) + mt[2]] = ord(c)
 349         string = write_map(string, mem)
 350         atomic_write(io_db["path_worldstate"], string)
 351         strong_write(io_db["file_out"], "WORLD_UPDATED\n")
 352         io_db["worldstate_updateable"] = False
 353
 354
 355 def replay_game():
 356     """Replay game from record file.
 357
 358     Use opts.replay as breakpoint turn to which to replay automatically before
 359     switching to manual input by non-meta commands in server input file
 360     triggering further reads of record file. Ensure opts.replay is at least 1.
 361     Run try_worldstate_update() before each interactive obey()/read_command().
 362     """
 363     if opts.replay < 1:
 364         opts.replay = 1
 365     print("Replay mode. Auto-replaying up to turn " + str(opts.replay) +
 366           " (if so late a turn is to be found).")
 367     if not os.access(io_db["path_record"], os.F_OK):
 368         raise SystemExit("No record file found to replay.")
 369     io_db["file_record"] = open(io_db["path_record"], "r")
 370     io_db["file_record"].prefix = "record file line "
 371     io_db["file_record"].line_n = 1
 372     while world_db["TURN"] < opts.replay:
 373         line = io_db["file_record"].readline()
 374         if "" == line:
 375             break
 376         obey(line.rstrip(), io_db["file_record"].prefix
 377              + str(io_db["file_record"].line_n))
 378         io_db["file_record"].line_n = io_db["file_record"].line_n + 1
 379     while True:
 380         try_worldstate_update()
 381         obey(read_command(), "in file", replay=True)
 382
 383
 384 def play_game():
 385     """Play game by server input file commands. Before, load save file found.
 386
 387     If no save file is found, a new world is generated from the commands in the
 388     world config plus a 'MAKE WORLD [current Unix timestamp]'. Record this
 389     command and all that follow via the server input file. Run
 390     try_worldstate_update() before each interactive obey()/read_command().
 391     """
 392     if os.access(io_db["path_save"], os.F_OK):
 393         obey_lines_in_file(io_db["path_save"], "save")
 394     else:
 395         if not os.access(io_db["path_worldconf"], os.F_OK):
 396             msg = "No world config file from which to start a new world."
 397             raise SystemExit(msg)
 398         obey_lines_in_file(io_db["path_worldconf"], "world config ",
 399                            do_record=True)
 400         obey("MAKE_WORLD " + str(int(time.time())), "in file", do_record=True)
 401     while True:
 402         try_worldstate_update()
 403         obey(read_command(), "in file", do_record=True)
 404
 405
 406 def remake_map():
 407     """(Re-)make island map.
 408
 409     Let "~" represent water, "." land, "X" trees: Build island shape randomly,
 410     start with one land cell in the middle, then go into cycle of repeatedly
 411     selecting a random sea cell and transforming it into land if it is neighbor
 412     to land. The cycle ends when a land cell is due to be created at the map's
 413     border. Then put some trees on the map (TODO: more precise algorithm desc).
 414     """
 415     def is_neighbor(coordinates, type):
 416         y = coordinates[0]
 417         x = coordinates[1]
 418         length = world_db["MAP_LENGTH"]
 419         ind = y % 2
 420         diag_west = x + (ind > 0)
 421         diag_east = x + (ind < (length - 1))
 422         pos = (y * length) + x
 423         if (y > 0 and diag_east
 424             and type == chr(world_db["MAP"][pos - length + ind])) \
 425            or (x < (length - 1)
 426                and type == chr(world_db["MAP"][pos + 1])) \
 427            or (y < (length - 1) and diag_east
 428                and type == chr(world_db["MAP"][pos + length + ind])) \
 429            or (y > 0 and diag_west
 430                and type == chr(world_db["MAP"][pos - length - (not ind)])) \
 431            or (x > 0
 432                and type == chr(world_db["MAP"][pos - 1])) \
 433            or (y < (length - 1) and diag_west
 434                and type == chr(world_db["MAP"][pos + length - (not ind)])):
 435             return True
 436         return False
 437     store_seed = rand.seed
 438     world_db["MAP"] = bytearray(b'~' * (world_db["MAP_LENGTH"] ** 2))
 439     length = world_db["MAP_LENGTH"]
 440     add_half_width = (not (length % 2)) * int(length / 2)
 441     world_db["MAP"][int((length ** 2) / 2) + add_half_width] = ord(".")
 442     while (1):
 443         y = rand.next() % length
 444         x = rand.next() % length
 445         pos = (y * length) + x
 446         if "~" == chr(world_db["MAP"][pos]) and is_neighbor((y, x), "."):
 447             if y == 0 or y == (length - 1) or x == 0 or x == (length - 1):
 448                 break
 449             world_db["MAP"][pos] = ord(".")
 450     n_trees = int((length ** 2) / 16)
 451     i_trees = 0
 452     while (i_trees <= n_trees):
 453         single_allowed = rand.next() % 32
 454         y = rand.next() % length
 455         x = rand.next() % length
 456         pos = (y * length) + x
 457         if "." == chr(world_db["MAP"][pos]) \
 458           and ((not single_allowed) or is_neighbor((y, x), "X")):
 459             world_db["MAP"][pos] = ord("X")
 460             i_trees += 1
 461     rand.seed = store_seed
 462     # This all-too-precise replica of the original C code misses iter_limit().
 463
 464
 465 def update_map_memory(t):
 466     """Update t's T_MEMMAP with what's in its FOV now,age its T_MEMMEPTHMAP."""
 467     if not t["T_MEMMAP"]:
 468         t["T_MEMMAP"] = bytearray(b' ' * (world_db["MAP_LENGTH"] ** 2))
 469     if not t["T_MEMDEPTHMAP"]:
 470         t["T_MEMDEPTHMAP"] = bytearray(b' ' * (world_db["MAP_LENGTH"] ** 2))
 471     for pos in range(world_db["MAP_LENGTH"] ** 2):
 472         if "v" == chr(t["fovmap"][pos]):
 473             t["T_MEMDEPTHMAP"][pos] = ord("0")
 474             if " " == chr(t["T_MEMMAP"][pos]):
 475                 t["T_MEMMAP"][pos] = world_db["MAP"][pos]
 476             continue
 477         if ord('0') <= t["T_MEMDEPTHMAP"][pos] \
 478            and ord('9') >= t["T_MEMDEPTHMAP"][pos] \
 479            and not rand.next() % (2 ** (t["T_MEMDEPTHMAP"][pos] - 48)):
 480             t["T_MEMDEPTHMAP"][pos] += 1
 481     for mt in [mt for mt in t["T_MEMTHING"]
 482                if "v" == chr(t["fovmap"][(mt[1] * world_db["MAP_LENGTH"])
 483                                          + mt[2]])]:
 484             t["T_MEMTHING"].remove(mt)
 485     for id in world_db["Things"]:
 486         type = world_db["Things"][id]["T_TYPE"]
 487         if not world_db["ThingTypes"][type]["TT_LIFEPOINTS"]:
 488             y = world_db["Things"][id]["T_POSY"]
 489             x = world_db["Things"][id]["T_POSX"]
 490             if "v" == chr(t["fovmap"][(y * world_db["MAP_LENGTH"]) + x]):
 491                 t["T_MEMTHING"].append((type, y, x))
 492
 493
 494 def set_world_inactive():
 495     """Set world_db["WORLD_ACTIVE"] to 0 and remove worldstate file."""
 496     server_test()
 497     if os.access(io_db["path_worldstate"], os.F_OK):
 498         os.remove(io_db["path_worldstate"])
 499     world_db["WORLD_ACTIVE"] = 0
 500
 501
 502 def integer_test(val_string, min, max):
 503     """Return val_string if possible integer >= min and <= max, else None."""
 504     try:
 505         val = int(val_string)
 506         if val < min or val > max:
 507             raise ValueError
 508         return val
 509     except ValueError:
 510         print("Ignoring: Please use integer >= " + str(min) + " and <= " +
 511               str(max) + ".")
 512         return None
 513
 514
 515 def setter(category, key, min, max):
 516     """Build setter for world_db([category + "s"][id])[key] to >=min/<=max."""
 517     if category is None:
 518         def f(val_string):
 519             val = integer_test(val_string, min, max)
 520             if None != val:
 521                 world_db[key] = val
 522     else:
 523         if category == "Thing":
 524             id_store = command_tid
 525             decorator = test_Thing_id
 526         elif category == "ThingType":
 527             id_store = command_ttid
 528             decorator = test_ThingType_id
 529         elif category == "ThingAction":
 530             id_store = command_taid
 531             decorator = test_ThingAction_id
 532
 533         @decorator
 534         def f(val_string):
 535             val = integer_test(val_string, min, max)
 536             if None != val:
 537                 world_db[category + "s"][id_store.id][key] = val
 538     return f
 539
 540
 541 def build_fov_map(t):
 542     """Build Thing's FOV map."""
 543     t["fovmap"] = bytearray(b'v' * (world_db["MAP_LENGTH"] ** 2))
 544     maptype = ctypes.c_char * len(world_db["MAP"])
 545     test = libpr.build_fov_map(t["T_POSY"], t["T_POSX"],
 546                                maptype.from_buffer(t["fovmap"]),
 547                                maptype.from_buffer(world_db["MAP"]))
 548     if test:
 549         raise RuntimeError("Malloc error in build_fov_Map().")
 550
 551
 552 def decrement_lifepoints(t):
 553     """Decrement t's lifepoints by 1, and if to zero, corpse it.
 554
 555     If t is the player avatar, only blank its fovmap, so that the client may
 556     still display memory data. On non-player things, erase fovmap and memory.
 557     """
 558     t["T_LIFEPOINTS"] -= 1
 559     if 0 == t["T_LIFEPOINTS"]:
 560         t["T_TYPE"] = world_db["ThingTypes"][t["T_TYPE"]]["TT_CORPSE_ID"]
 561         if world_db["Things"][0] == t:
 562             t["fovmap"] = bytearray(b' ' * (world_db["MAP_LENGTH"] ** 2))
 563             strong_write(io_db["file_out"], "LOG You die.\n")
 564         else:
 565             t["fovmap"] = False
 566             t["T_MEMMAP"] = False
 567             t["T_MEMDEPTHMAP"] = False
 568             t["T_MEMTHING"] = []
 569             strong_write(io_db["file_out"], "LOG It dies.\n")
 570
 571
 572 def mv_yx_in_dir_legal(dir, y, x):
 573     """Wrapper around libpr.mv_yx_in_dir_legal to simplify its use."""
 574     dir_c = dir.encode("ascii")[0]
 575     test = libpr.mv_yx_in_dir_legal_wrap(dir_c, y, x)
 576     if -1 == test:
 577         raise RuntimeError("Too much wrapping in mv_yx_in_dir_legal_wrap()!")
 578     return (test, libpr.result_y(), libpr.result_x())
 579
 580
 581 def actor_wait(t):
 582     """Make t do nothing (but loudly, if player avatar)."""
 583     if t == world_db["Things"][0]:
 584         strong_write(io_db["file_out"], "LOG You wait.\n")
 585
 586
 587 def actor_move(t):
 588     """If passable, move/collide(=attack) thing into T_ARGUMENT's direction."""
 589     passable = False
 590     move_result = mv_yx_in_dir_legal(t["T_ARGUMENT"], t["T_POSY"], t["T_POSX"])
 591     if 1 == move_result[0]:
 592         pos = (move_result[1] * world_db["MAP_LENGTH"]) + move_result[2]
 593         passable = "." == chr(world_db["MAP"][pos])
 594         hitted = [id for id in world_db["Things"]
 595                   if world_db["Things"][id] != t
 596                   if world_db["Things"][id]["T_LIFEPOINTS"]
 597                   if world_db["Things"][id]["T_POSY"] == move_result[1]
 598                   if world_db["Things"][id]["T_POSX"] == move_result[2]]
 599         if len(hitted):
 600             hit_id = hitted[0]
 601             hitter_name = world_db["ThingTypes"][t["T_TYPE"]]["TT_NAME"]
 602             hitter = "You" if t == world_db["Things"][0] else hitter_name
 603             hitted_type = world_db["Things"][hit_id]["T_TYPE"]
 604             hitted_name = world_db["ThingTypes"][hitted_type]["TT_NAME"]
 605             hitted = "you" if hit_id == 0 else hitted_name
 606             verb = " wound " if hitter == "You" else " wounds "
 607             strong_write(io_db["file_out"], "LOG " + hitter + verb + hitted + \
 608                                             ".\n")
 609             decrement_lifepoints(world_db["Things"][hit_id])
 610             return
 611     dir = [dir for dir in directions_db
 612            if directions_db[dir] == t["T_ARGUMENT"]][0]
 613     if passable:
 614         t["T_POSY"] = move_result[1]
 615         t["T_POSX"] = move_result[2]
 616         for id in t["T_CARRIES"]:
 617             world_db["Things"][id]["T_POSY"] = move_result[1]
 618             world_db["Things"][id]["T_POSX"] = move_result[2]
 619         build_fov_map(t)
 620         strong_write(io_db["file_out"], "LOG You move " + dir + ".\n")
 621     else:
 622         strong_write(io_db["file_out"], "LOG You fail to move " + dir + ".\n")
 623
 624
 625 def actor_pick_up(t):
 626     """Make t pick up (topmost?) Thing from ground into inventory."""
 627     # Topmostness is actually not defined so far.
 628     ids = [id for id in world_db["Things"] if world_db["Things"][id] != t
 629            if not world_db["Things"][id]["carried"]
 630            if world_db["Things"][id]["T_POSY"] == t["T_POSY"]
 631            if world_db["Things"][id]["T_POSX"] == t["T_POSX"]]
 632     if len(ids):
 633         world_db["Things"][ids[0]]["carried"] = True
 634         t["T_CARRIES"].append(ids[0])
 635         if t == world_db["Things"][0]:
 636             strong_write(io_db["file_out"], "LOG You pick up an object.\n")
 637     elif t == world_db["Things"][0]:
 638         err = "You try to pick up an object, but there is none."
 639         strong_write(io_db["file_out"], "LOG " + err + "\n")
 640
 641
 642 def actor_drop(t):
 643     """Make t rop Thing from inventory to ground indexed by T_ARGUMENT."""
 644     # TODO: Handle case where T_ARGUMENT matches nothing.
 645     if len(t["T_CARRIES"]):
 646         id = t["T_CARRIES"][t["T_ARGUMENT"]]
 647         t["T_CARRIES"].remove(id)
 648         world_db["Things"][id]["carried"] = False
 649         if t == world_db["Things"][0]:
 650             strong_write(io_db["file_out"], "LOG You drop an object.\n")
 651     elif t == world_db["Things"][0]:
 652         err = "You try to drop an object, but you own none."
 653         strong_write(io_db["file_out"], "LOG " + err + "\n")
 654
 655
 656 def actor_use(t):
 657     """Make t use (for now: consume) T_ARGUMENT-indexed Thing in inventory."""
 658     # Original wrongly featured lifepoints increase through consumable!
 659     # TODO: Handle case where T_ARGUMENT matches nothing.
 660     if len(t["T_CARRIES"]):
 661         id = t["T_CARRIES"][t["T_ARGUMENT"]]
 662         type = world_db["Things"][id]["T_TYPE"]
 663         if world_db["ThingTypes"][type]["TT_CONSUMABLE"]:
 664             t["T_CARRIES"].remove(id)
 665             del world_db["Things"][id]
 666             t["T_SATIATION"] += world_db["ThingTypes"][type]["TT_CONSUMABLE"]
 667             strong_write(io_db["file_out"], "LOG You consume this object.\n")
 668         else:
 669             strong_write(io_db["file_out"], "LOG You try to use this object," +
 670                                             "but fail.\n")
 671     else:
 672         strong_write(io_db["file_out"], "LOG You try to use an object, but " +
 673                                         "you own none.\n")
 674
 675
 676 def thingproliferation(t):
 677     """To chance of 1/TT_PROLIFERATE, create t offspring in neighbor cell.
 678
 679     Naturally only works with TT_PROLIFERATE > 0. The neighbor cell must be
 680     passable and not be inhabited by a Thing of the same type, or, if Thing is
 681     animate, any other animate Thing. If there are several map cell candidates,
 682     one is selected randomly.
 683     """
 684     def test_cell(t, y, x):
 685         if "." == chr(world_db["MAP"][(y * world_db["MAP_LENGTH"]) + x]):
 686             for id in [id for id in world_db["Things"]
 687                        if y == world_db["Things"][id]["T_POSY"]
 688                        if x == world_db["Things"][id]["T_POSX"]
 689                        if (t["T_TYPE"] == world_db["Things"][id]["T_TYPE"])
 690                        or (t["T_LIFEPOINTS"] and
 691                            world_db["Things"][id]["T_LIFEPOINTS"])]:
 692                 return False
 693             return True
 694         return False
 695     prolscore = world_db["ThingTypes"][t["T_TYPE"]]["TT_PROLIFERATE"]
 696     if prolscore and (1 == prolscore or 1 == (rand.next() % prolscore)):
 697         candidates = []
 698         for dir in [directions_db[key] for key in directions_db]:
 699             mv_result = mv_yx_in_dir_legal(dir, t["T_POSY"], t["T_POSX"])
 700             if mv_result[0] and test_cell(t, mv_result[1], mv_result[2]):
 701                 candidates.append((mv_result[1], mv_result[2]))
 702         if len(candidates):
 703             i = rand.next() % len(candidates)
 704             id = id_setter(-1, "Things")
 705             newT = new_Thing(t["T_TYPE"], (candidates[i][0], candidates[i][1]))
 706             world_db["Things"][id] = newT
 707
 708
 709 def hunger(t):
 710     """Decrement t's satiation, dependent on it trigger lifepoint dec chance."""
 711     if t["T_SATIATION"] > -32768:
 712         t["T_SATIATION"] -= 1
 713     testbase = t["T_SATIATION"] if t["T_SATIATION"] >= 0 else -t["T_SATIATION"]
 714     if not world_db["ThingTypes"][t["T_TYPE"]]["TT_LIFEPOINTS"]:
 715         raise RuntimeError("A thing that should not hunger is hungering.")
 716     stomach = int(32767 / world_db["ThingTypes"][t["T_TYPE"]]["TT_LIFEPOINTS"])
 717     if int(int(testbase / stomach) / ((rand.next() % stomach) + 1)):
 718         if t == world_db["Things"][0]:
 719             strong_write(io_db["file_out"], "LOG You suffer from hunger.\n")
 720         else:
 721             name = world_db["ThingTypes"][t["T_TYPE"]]["TT_NAME"]
 722             strong_write(io_db["file_out"], "LOG " + name + \
 723                                             " suffers from hunger.\n")
 724         decrement_lifepoints(t)
 725
 726
 727 def turn_over():
 728     """Run game world and its inhabitants until new player input expected."""
 729     id = 0
 730     whilebreaker = False
 731     while world_db["Things"][0]["T_LIFEPOINTS"]:
 732         for id in [id for id in world_db["Things"]]:
 733             Thing = world_db["Things"][id]
 734             if Thing["T_LIFEPOINTS"]:
 735                 if not Thing["T_COMMAND"]:
 736                     update_map_memory(Thing)
 737                     if 0 == id:
 738                         whilebreaker = True
 739                         break
 740                     # DUMMY: ai(thing)
 741                     Thing["T_COMMAND"] = 1
 742                 # DUMMY: try_healing
 743                 Thing["T_PROGRESS"] += 1
 744                 taid = [a for a in world_db["ThingActions"]
 745                           if a == Thing["T_COMMAND"]][0]
 746                 ThingAction = world_db["ThingActions"][taid]
 747                 if Thing["T_PROGRESS"] == ThingAction["TA_EFFORT"]:
 748                     eval("actor_" + ThingAction["TA_NAME"])(Thing)
 749                     Thing["T_COMMAND"] = 0
 750                     Thing["T_PROGRESS"] = 0
 751                 hunger(Thing)
 752             thingproliferation(Thing)
 753         if whilebreaker:
 754             break
 755         world_db["TURN"] += 1
 756
 757
 758 def new_Thing(type, pos=(0,0)):
 759     """Return Thing of type T_TYPE, with fovmap if alive and world active."""
 760     thing = {
 761         "T_LIFEPOINTS": world_db["ThingTypes"][type]["TT_LIFEPOINTS"],
 762         "T_ARGUMENT": 0,
 763         "T_PROGRESS": 0,
 764         "T_SATIATION": 0,
 765         "T_COMMAND": 0,
 766         "T_TYPE": type,
 767         "T_POSY": pos[0],
 768         "T_POSX": pos[1],
 769         "T_CARRIES": [],
 770         "carried": False,
 771         "T_MEMTHING": [],
 772         "T_MEMMAP": False,
 773         "T_MEMDEPTHMAP": False,
 774         "fovmap": False
 775     }
 776     if world_db["WORLD_ACTIVE"] and thing["T_LIFEPOINTS"]:
 777         build_fov_map(thing)
 778     return thing
 779
 780
 781 def id_setter(id, category, id_store=False, start_at_1=False):
 782     """Set ID of object of category to manipulate ID unused? Create new one.
 783
 784     The ID is stored as id_store.id (if id_store is set). If the integer of the
 785     input is valid (if start_at_1, >= 0 and <= 255, else >= -32768 and <=
 786     32767), but <0 or (if start_at_1) <1, calculate new ID: lowest unused ID
 787     >=0 or (if start_at_1) >= 1, and <= 255. None is always returned when no
 788     new object is created, otherwise the new object's ID.
 789     """
 790     min = 0 if start_at_1 else -32768
 791     max = 255 if start_at_1 else 32767
 792     if str == type(id):
 793         id = integer_test(id, min, max)
 794     if None != id:
 795         if id in world_db[category]:
 796             if id_store:
 797                 id_store.id = id
 798             return None
 799         else:
 800             if (start_at_1 and 0 == id) \
 801                or ((not start_at_1) and (id < 0 or id > 255)):
 802                 id = -1
 803                 while 1:
 804                     id = id + 1
 805                     if id not in world_db[category]:
 806                         break
 807                 if id > 255:
 808                     print("Ignoring: "
 809                           "No unused ID available to add to ID list.")
 810                     return None
 811             if id_store:
 812                 id_store.id = id
 813     return id
 814
 815
 816 def command_ping():
 817     """Send PONG line to server output file."""
 818     strong_write(io_db["file_out"], "PONG\n")
 819
 820
 821 def command_quit():
 822     """Abort server process."""
 823     raise SystemExit("received QUIT command")
 824
 825
 826 def command_thingshere(str_y, str_x):
 827     """Write to out file list of Things known to player at coordinate y, x."""
 828     def write_thing_if_here():
 829         if y == world_db["Things"][id]["T_POSY"] \
 830            and x == world_db["Things"][id]["T_POSX"] \
 831            and not world_db["Things"][id]["carried"]:
 832             type = world_db["Things"][id]["T_TYPE"]
 833             name = world_db["ThingTypes"][type]["TT_NAME"]
 834             strong_write(io_db["file_out"], name + "\n")
 835     if world_db["WORLD_ACTIVE"]:
 836         y = integer_test(str_y, 0, 255)
 837         x = integer_test(str_x, 0, 255)
 838         length = world_db["MAP_LENGTH"]
 839         if None != y and None != x and y < length and x < length:
 840             pos = (y * world_db["MAP_LENGTH"]) + x
 841             strong_write(io_db["file_out"], "THINGS_HERE START\n")
 842             if "v" == chr(world_db["Things"][0]["fovmap"][pos]):
 843                 for id in world_db["Things"]:
 844                     write_thing_if_here()
 845             else:
 846                 for id in world_db["Things"][0]["T_MEMTHING"]:
 847                     write_thing_if_here()
 848             strong_write(io_db["file_out"], "THINGS_HERE END\n")
 849         else:
 850             print("Ignoring: Invalid map coordinates.")
 851     else:
 852         print("Ignoring: Command only works on existing worlds.")
 853
 854
 855 def play_commander(action, args=False):
 856     """Setter for player's T_COMMAND and T_ARGUMENT, then calling turn_over().
 857
 858     T_ARGUMENT is set to direction char if action=="wait",or 8-bit int if args.
 859     """
 860
 861     def set_command():
 862         id = [x for x in world_db["ThingActions"]
 863                 if world_db["ThingActions"][x]["TA_NAME"] == action][0]
 864         world_db["Things"][0]["T_COMMAND"] = id
 865         turn_over()
 866
 867     def set_command_and_argument_int(str_arg):
 868         val = integer_test(str_arg, 0, 255)
 869         if None != val:
 870             world_db["Things"][0]["T_ARGUMENT"] = val
 871             set_command()
 872
 873     def set_command_and_argument_movestring(str_arg):
 874         if str_arg in directions_db:
 875             world_db["Things"][0]["T_ARGUMENT"] = directions_db[str_arg]
 876             set_command()
 877         else:
 878             print("Ignoring: Argument must be valid direction string.")
 879
 880     if action == "move":
 881         return set_command_and_argument_movestring
 882     elif args:
 883         return set_command_and_argument_int
 884     else:
 885         return set_command
 886
 887
 888 def command_seedrandomness(seed_string):
 889     """Set rand seed to int(seed_string)."""
 890     val = integer_test(seed_string, 0, 4294967295)
 891     if None != val:
 892         rand.seed = val
 893
 894
 895 def command_seedmap(seed_string):
 896     """Set world_db["SEED_MAP"] to int(seed_string), then (re-)make map."""
 897     setter(None, "SEED_MAP", 0, 4294967295)(seed_string)
 898     remake_map()
 899
 900
 901 def command_makeworld(seed_string):
 902     """(Re-)build game world, i.e. map, things, to a new turn 1 from seed.
 903
 904     Seed rand with seed, fill it into world_db["SEED_MAP"]. Do more only with a
 905     "wait" ThingAction and world["PLAYER_TYPE"] matching ThingType of
 906     TT_START_NUMBER > 0. Then, world_db["Things"] emptied, call remake_map()
 907     and set world_db["WORLD_ACTIVE"], world_db["TURN"] to 1. Build new Things
 908     according to ThingTypes' TT_START_NUMBERS, with Thing of ID 0 to ThingType
 909     of ID = world["PLAYER_TYPE"]. Place Things randomly, and actors not on each
 910     other. Init player's memory map. Write "NEW_WORLD" line to out file.
 911     """
 912
 913     def free_pos():
 914         i = 0
 915         while 1:
 916             err = "Space to put thing on too hard to find. Map too small?"
 917             while 1:
 918                 y = rand.next() % world_db["MAP_LENGTH"]
 919                 x = rand.next() % world_db["MAP_LENGTH"]
 920                 if "." == chr(world_db["MAP"][y * world_db["MAP_LENGTH"] + x]):
 921                     break
 922                 i += 1
 923                 if i == 65535:
 924                     raise SystemExit(err)
 925             # Replica of C code, wrongly ignores animatedness of new Thing.
 926             pos_clear = (0 == len([id for id in world_db["Things"]
 927                                    if world_db["Things"][id]["T_LIFEPOINTS"]
 928                                    if world_db["Things"][id]["T_POSY"] == y
 929                                    if world_db["Things"][id]["T_POSX"] == x]))
 930             if pos_clear:
 931                 break
 932         return (y, x)
 933
 934     val = integer_test(seed_string, 0, 4294967295)
 935     if None == val:
 936         return
 937     rand.seed = val
 938     world_db["SEED_MAP"] = val
 939     player_will_be_generated = False
 940     playertype = world_db["PLAYER_TYPE"]
 941     for ThingType in world_db["ThingTypes"]:
 942         if playertype == ThingType:
 943             if 0 < world_db["ThingTypes"][ThingType]["TT_START_NUMBER"]:
 944                 player_will_be_generated = True
 945             break
 946     if not player_will_be_generated:
 947         print("Ignoring beyond SEED_MAP: " +
 948               "No player type with start number >0 defined.")
 949         return
 950     wait_action = False
 951     for ThingAction in world_db["ThingActions"]:
 952         if "wait" == world_db["ThingActions"][ThingAction]["TA_NAME"]:
 953             wait_action = True
 954     if not wait_action:
 955         print("Ignoring beyond SEED_MAP: " +
 956               "No thing action with name 'wait' defined.")
 957         return
 958     world_db["Things"] = {}
 959     remake_map()
 960     world_db["WORLD_ACTIVE"] = 1
 961     world_db["TURN"] = 1
 962     for i in range(world_db["ThingTypes"][playertype]["TT_START_NUMBER"]):
 963         id = id_setter(-1, "Things")
 964         world_db["Things"][id] = new_Thing(playertype, free_pos())
 965     update_map_memory(world_db["Things"][0])
 966     for type in world_db["ThingTypes"]:
 967         for i in range(world_db["ThingTypes"][type]["TT_START_NUMBER"]):
 968             if type != playertype:
 969                 id = id_setter(-1, "Things")
 970                 world_db["Things"][id] = new_Thing(type, free_pos())
 971     strong_write(io_db["file_out"], "NEW_WORLD\n")
 972
 973
 974 def command_maplength(maplength_string):
 975     """Redefine map length. Invalidate map, therefore lose all things on it."""
 976     val = integer_test(maplength_string, 1, 256)
 977     if None != val:
 978         world_db["MAP_LENGTH"] = val
 979         set_world_inactive()
 980         world_db["Things"] = {}
 981         libpr.set_maplength(val)
 982
 983
 984 def command_worldactive(worldactive_string):
 985     """Toggle world_db["WORLD_ACTIVE"] if possible.
 986
 987     An active world can always be set inactive. An inactive world can only be
 988     set active with a "wait" ThingAction, and a player Thing (of ID 0). On
 989     activation, rebuild all Things' FOVs, and the player's map memory.
 990     """
 991     # In original version, map existence was also tested (unnecessarily?).
 992     val = integer_test(worldactive_string, 0, 1)
 993     if val:
 994         if 0 != world_db["WORLD_ACTIVE"]:
 995             if 0 == val:
 996                 set_world_inactive()
 997             else:
 998                 print("World already active.")
 999         elif 0 == world_db["WORLD_ACTIVE"]:
1000             wait_exists = False
1001             for ThingAction in world_db["ThingActions"]:
1002                 if "wait" == world_db["ThingActions"][ThingAction]["TA_NAME"]:
1003                     wait_exists = True
1004                     break
1005             player_exists = False
1006             for Thing in world_db["Things"]:
1007                 if 0 == Thing:
1008                     player_exists = True
1009                     break
1010             if wait_exists and player_exists:
1011                 for id in world_db["Things"]:
1012                     if world_db["Things"][id]["T_LIFEPOINTS"]:
1013                         build_fov_map(world_db["Things"][id])
1014                         if 0 == id:
1015                             update_map_memory(world_db["Things"][id])
1016                 world_db["WORLD_ACTIVE"] = 1
1017
1018
1019 def test_for_id_maker(object, category):
1020     """Return decorator testing for object having "id" attribute."""
1021     def decorator(f):
1022         def helper(*args):
1023             if hasattr(object, "id"):
1024                 f(*args)
1025             else:
1026                 print("Ignoring: No " + category +
1027                       " defined to manipulate yet.")
1028         return helper
1029     return decorator
1030
1031
1032 def command_tid(id_string):
1033     """Set ID of Thing to manipulate. ID unused? Create new one.
1034
1035     Default new Thing's type to the first available ThingType, others: zero.
1036     """
1037     id = id_setter(id_string, "Things", command_tid)
1038     if None != id:
1039         if world_db["ThingTypes"] == {}:
1040             print("Ignoring: No ThingType to settle new Thing in.")
1041             return
1042         type = list(world_db["ThingTypes"].keys())[0]
1043         world_db["Things"][id] = new_Thing(type)
1044
1045
1046 test_Thing_id = test_for_id_maker(command_tid, "Thing")
1047
1048
1049 @test_Thing_id
1050 def command_tcommand(str_int):
1051     """Set T_COMMAND of selected Thing."""
1052     val = integer_test(str_int, 0, 255)
1053     if None != val:
1054         if 0 == val or val in world_db["ThingActions"]:
1055             world_db["Things"][command_tid.id]["T_COMMAND"] = val
1056         else:
1057             print("Ignoring: ThingAction ID belongs to no known ThingAction.")
1058
1059
1060 @test_Thing_id
1061 def command_ttype(str_int):
1062     """Set T_TYPE of selected Thing."""
1063     val = integer_test(str_int, 0, 255)
1064     if None != val:
1065         if val in world_db["ThingTypes"]:
1066             world_db["Things"][command_tid.id]["T_TYPE"] = val
1067         else:
1068             print("Ignoring: ThingType ID belongs to no known ThingType.")
1069
1070
1071 @test_Thing_id
1072 def command_tcarries(str_int):
1073     """Append int(str_int) to T_CARRIES of selected Thing.
1074
1075     The ID int(str_int) must not be of the selected Thing, and must belong to a
1076     Thing with unset "carried" flag. Its "carried" flag will be set on owning.
1077     """
1078     val = integer_test(str_int, 0, 255)
1079     if None != val:
1080         if val == command_tid.id:
1081             print("Ignoring: Thing cannot carry itself.")
1082         elif val in world_db["Things"] \
1083              and not world_db["Things"][val]["carried"]:
1084             world_db["Things"][command_tid.id]["T_CARRIES"].append(val)
1085             world_db["Things"][val]["carried"] = True
1086         else:
1087             print("Ignoring: Thing not available for carrying.")
1088     # Note that the whole carrying structure is different from the C version:
1089     # Carried-ness is marked by a "carried" flag, not by Things containing
1090     # Things internally.
1091
1092
1093 @test_Thing_id
1094 def command_tmemthing(str_t, str_y, str_x):
1095     """Add (int(str_t), int(str_y), int(str_x)) to selected Thing's T_MEMTHING.
1096
1097     The type must fit to an existing ThingType, and the position into the map.
1098     """
1099     type = integer_test(str_t, 0, 255)
1100     posy = integer_test(str_y, 0, 255)
1101     posx = integer_test(str_x, 0, 255)
1102     if None != type and None != posy and None != posx:
1103         if type not in world_db["ThingTypes"] \
1104            or posy >= world_db["MAP_LENGTH"] or posx >= world_db["MAP_LENGTH"]:
1105             print("Ignoring: Illegal value for thing type or position.")
1106         else:
1107             memthing = (type, posy, posx)
1108             world_db["Things"][command_tid.id]["T_MEMTHING"].append(memthing)
1109
1110
1111 def setter_map(maptype):
1112     """Set selected Thing's map of maptype's int(str_int)-th line to mapline.
1113
1114     If Thing has no map of maptype yet, initialize it with ' ' bytes first.
1115     """
1116     @test_Thing_id
1117     def helper(str_int, mapline):
1118         val = integer_test(str_int, 0, 255)
1119         if None != val:
1120             if val >= world_db["MAP_LENGTH"]:
1121                 print("Illegal value for map line number.")
1122             elif len(mapline) != world_db["MAP_LENGTH"]:
1123                 print("Map line length is unequal map width.")
1124             else:
1125                 length = world_db["MAP_LENGTH"]
1126                 map = None
1127                 if not world_db["Things"][command_tid.id][maptype]:
1128                     map = bytearray(b' ' * (length ** 2))
1129                 else:
1130                     map = world_db["Things"][command_tid.id][maptype]
1131                 map[val * length:(val * length) + length] = mapline.encode()
1132                 world_db["Things"][command_tid.id][maptype] = map
1133     return helper
1134
1135
1136 def setter_tpos(axis):
1137     """Generate setter for T_POSX or  T_POSY of selected Thing.
1138
1139     If world is active, rebuilds animate things' fovmap, player's memory map.
1140     """
1141     @test_Thing_id
1142     def helper(str_int):
1143         val = integer_test(str_int, 0, 255)
1144         if None != val:
1145             if val < world_db["MAP_LENGTH"]:
1146                 world_db["Things"][command_tid.id]["T_POS" + axis] = val
1147                 if world_db["WORLD_ACTIVE"] \
1148                    and world_db["Things"][command_tid.id]["T_LIFEPOINTS"]:
1149                     build_fov_map(world_db["Things"][command_tid.id])
1150                     if 0 == command_tid.id:
1151                         update_map_memory(world_db["Things"][command_tid.id])
1152             else:
1153                 print("Ignoring: Position is outside of map.")
1154     return helper
1155
1156
1157 def command_ttid(id_string):
1158     """Set ID of ThingType to manipulate. ID unused? Create new one.
1159
1160     Default new ThingType's TT_SYMBOL to "?", TT_CORPSE_ID to self, others: 0.
1161     """
1162     id = id_setter(id_string, "ThingTypes", command_ttid)
1163     if None != id:
1164         world_db["ThingTypes"][id] = {
1165             "TT_NAME": "(none)",
1166             "TT_CONSUMABLE": 0,
1167             "TT_LIFEPOINTS": 0,
1168             "TT_PROLIFERATE": 0,
1169             "TT_START_NUMBER": 0,
1170             "TT_SYMBOL": "?",
1171             "TT_CORPSE_ID": id
1172         }
1173
1174
1175 test_ThingType_id = test_for_id_maker(command_ttid, "ThingType")
1176
1177
1178 @test_ThingType_id
1179 def command_ttname(name):
1180     """Set TT_NAME of selected ThingType."""
1181     world_db["ThingTypes"][command_ttid.id]["TT_NAME"] = name
1182
1183
1184 @test_ThingType_id
1185 def command_ttsymbol(char):
1186     """Set TT_SYMBOL of selected ThingType. """
1187     if 1 == len(char):
1188         world_db["ThingTypes"][command_ttid.id]["TT_SYMBOL"] = char
1189     else:
1190         print("Ignoring: Argument must be single character.")
1191
1192
1193 @test_ThingType_id
1194 def command_ttcorpseid(str_int):
1195     """Set TT_CORPSE_ID of selected ThingType."""
1196     val = integer_test(str_int, 0, 255)
1197     if None != val:
1198         if val in world_db["ThingTypes"]:
1199             world_db["ThingTypes"][command_ttid.id]["TT_CORPSE_ID"] = val
1200         else:
1201             print("Ignoring: Corpse ID belongs to no known ThignType.")
1202
1203
1204 def command_taid(id_string):
1205     """Set ID of ThingAction to manipulate. ID unused? Create new one.
1206
1207     Default new ThingAction's TA_EFFORT to 1, its TA_NAME to "wait".
1208     """
1209     id = id_setter(id_string, "ThingActions", command_taid, True)
1210     if None != id:
1211         world_db["ThingActions"][id] = {
1212             "TA_EFFORT": 1,
1213             "TA_NAME": "wait"
1214         }
1215
1216
1217 test_ThingAction_id = test_for_id_maker(command_taid, "ThingAction")
1218
1219
1220 @test_ThingAction_id
1221 def command_taname(name):
1222     """Set TA_NAME of selected ThingAction.
1223
1224     The name must match a valid thing action function. If after the name
1225     setting no ThingAction with name "wait" remains, call set_world_inactive().
1226     """
1227     if name == "wait" or name == "move" or name == "use" or name == "drop" \
1228        or name == "pick_up":
1229         world_db["ThingActions"][command_taid.id]["TA_NAME"] = name
1230         if 1 == world_db["WORLD_ACTIVE"]:
1231             wait_defined = False
1232             for id in world_db["ThingActions"]:
1233                 if "wait" == world_db["ThingActions"][id]["TA_NAME"]:
1234                     wait_defined = True
1235                     break
1236             if not wait_defined:
1237                 set_world_inactive()
1238     else:
1239         print("Ignoring: Invalid action name.")
1240     # In contrast to the original,naming won't map a function to a ThingAction.
1241
1242
1243 """Commands database.
1244
1245 Map command start tokens to ([0]) number of expected command arguments, ([1])
1246 the command's meta-ness (i.e. is it to be written to the record file, is it to
1247 be ignored in replay mode if read from server input file), and ([2]) a function
1248 to be called on it.
1249 """
1250 commands_db = {
1251     "QUIT": (0, True, command_quit),
1252     "PING": (0, True, command_ping),
1253     "THINGS_HERE": (2, True, command_thingshere),
1254     "MAKE_WORLD": (1, False, command_makeworld),
1255     "SEED_MAP": (1, False, command_seedmap),
1256     "SEED_RANDOMNESS": (1, False, command_seedrandomness),
1257     "TURN": (1, False, setter(None, "TURN", 0, 65535)),
1258     "PLAYER_TYPE": (1, False, setter(None, "PLAYER_TYPE", 0, 255)),
1259     "MAP_LENGTH": (1, False, command_maplength),
1260     "WORLD_ACTIVE": (1, False, command_worldactive),
1261     "TA_ID": (1, False, command_taid),
1262     "TA_EFFORT": (1, False, setter("ThingAction", "TA_EFFORT", 0, 255)),
1263     "TA_NAME": (1, False, command_taname),
1264     "TT_ID": (1, False, command_ttid),
1265     "TT_NAME": (1, False, command_ttname),
1266     "TT_SYMBOL": (1, False, command_ttsymbol),
1267     "TT_CORPSE_ID": (1, False, command_ttcorpseid),
1268     "TT_CONSUMABLE": (1, False, setter("ThingType", "TT_CONSUMABLE",
1269                                        0, 65535)),
1270     "TT_START_NUMBER": (1, False, setter("ThingType", "TT_START_NUMBER",
1271                                          0, 255)),
1272     "TT_PROLIFERATE": (1, False, setter("ThingType", "TT_PROLIFERATE",
1273                                         0, 255)),
1274     "TT_LIFEPOINTS": (1, False, setter("ThingType", "TT_LIFEPOINTS", 0, 255)),
1275     "T_ID": (1, False, command_tid),
1276     "T_ARGUMENT": (1, False, setter("Thing", "T_ARGUMENT", 0, 255)),
1277     "T_PROGRESS": (1, False, setter("Thing", "T_PROGRESS", 0, 255)),
1278     "T_LIFEPOINTS": (1, False, setter("Thing", "T_LIFEPOINTS", 0, 255)),
1279     "T_SATIATION": (1, False, setter("Thing", "T_SATIATION", -32768, 32767)),
1280     "T_COMMAND": (1, False, command_tcommand),
1281     "T_TYPE": (1, False, command_ttype),
1282     "T_CARRIES": (1, False, command_tcarries),
1283     "T_MEMMAP": (2, False, setter_map("T_MEMMAP")),
1284     "T_MEMDEPTHMAP": (2, False, setter_map("T_MEMDEPTHMAP")),
1285     "T_MEMTHING": (3, False, command_tmemthing),
1286     "T_POSY": (1, False, setter_tpos("Y")),
1287     "T_POSX": (1, False, setter_tpos("X")),
1288     "wait": (0, False, play_commander("wait")),
1289     "move": (1, False, play_commander("move")),
1290     "pick_up": (0, False, play_commander("pick_up")),
1291     "drop": (1, False, play_commander("drop", True)),
1292     "use": (1, False, play_commander("use", True)),
1293 }
1294
1295
1296 """World state database. With sane default values. (Randomness is in rand.)"""
1297 world_db = {
1298     "TURN": 0,
1299     "SEED_MAP": 0,
1300     "PLAYER_TYPE": 0,
1301     "MAP_LENGTH": 64,
1302     "WORLD_ACTIVE": 0,
1303     "ThingActions": {},
1304     "ThingTypes": {},
1305     "Things": {}
1306 }
1307
1308 """Mapping of direction names to internal direction chars."""
1309 directions_db = {"east": "d", "south-east": "c", "south-west": "x",
1310                  "west": "s", "north-west": "w", "north-east": "e"}
1311
1312 """File IO database."""
1313 io_db = {
1314     "path_save": "save",
1315     "path_record": "record",
1316     "path_worldconf": "confserver/world",
1317     "path_server": "server/",
1318     "path_in": "server/in",
1319     "path_out": "server/out",
1320     "path_worldstate": "server/worldstate",
1321     "tmp_suffix": "_tmp",
1322     "kicked_by_rival": False,
1323     "worldstate_updateable": False
1324 }
1325
1326
1327 try:
1328     libpr = prep_library()
1329     rand = RandomnessIO()
1330     opts = parse_command_line_arguments()
1331     setup_server_io()
1332     if None != opts.replay:
1333         replay_game()
1334     else:
1335         play_game()
1336 except SystemExit as exit:
1337     print("ABORTING: " + exit.args[0])
1338 except:
1339     print("SOMETHING WENT WRONG IN UNEXPECTED WAYS")
1340     raise
1341 finally:
1342     cleanup_server_io()