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

   1 import curses
   2 import math
   3 import os
   4 import signal
   5 import time
   6
   7
   8 def set_window_geometries():
   9
  10     def set_window_size():
  11         win["size"], win["start"] = [0, 0], [0, 0]
  12         win["size"][0] = win["config"][0]
  13         if (win["config"][0] == 0):
  14             win["size"][0] = screen_size[0] - sep_size
  15         elif (win["config"][0] < 0):
  16             win["size"][0] = screen_size[0] + win["config"][0] - sep_size
  17         win["size"][1] = win["config"][1]
  18         if (win["config"][1] == 0):
  19             win["size"][1] = screen_size[1]
  20         elif (win["config"][1] < 0):
  21             win["size"][1] = screen_size[1] + win["config"][1]
  22
  23     def place_window():
  24         win_i = windows.index(win)
  25
  26         # If win is first window, it goes into the top left corner.
  27         win["start"][0] = 0 + sep_size
  28         win["start"][1] = 0
  29         if (win_i > 0):
  30
  31             # If not, get win's closest predecessor starting a new stack on the
  32             # screen top,fit win's top left to that win_top's top right corner.
  33             win_top = None
  34             for i in range(win_i - 1, -1, -1):
  35                 win_top = windows[i]
  36                 if (win_top["start"][0] == 0 + sep_size):
  37                     break
  38             win["start"][1] = win_top["start"][1] + win_top["size"][1] \
  39                 + sep_size
  40
  41             # If enough space is found below win's predecessor, fit win's top
  42             # left corner to that predecessor's bottom left corner.
  43             win_prev = windows[win_i - 1]
  44             next_free_y = win_prev["start"][0] + win_prev["size"][0] + sep_size
  45             if (win["size"][1] <= win_prev["size"][1] and
  46                     win["size"][0] <= screen_size[0] - next_free_y):
  47                 win["start"][1] = win_prev["start"][1]
  48                 win["start"][0] = next_free_y
  49
  50             # If that fails, try to fit win's top left corner to the top right
  51             # corner of its closest predecessor win_test 1) below win_top (see
  52             # above) 2) and with enough space open to its right between its
  53             # right edge and the lower edge of a win_high located directly
  54             # above win_test to fit win there (without growing further to the
  55             # right than win_high does or surpassing the screen's lower edge).
  56             else:
  57                 win_test = win_prev
  58                 win_high = None
  59                 while (win_test != win_top):
  60                     for i in range(win_i - 2, -1, -1):
  61                         win_high = windows[i]
  62                         if win_test["start"][0] > win_high["start"][0]:
  63                             break
  64                     next_free_y = win_high["start"][0] + win_high["size"][0] \
  65                         + sep_size
  66                     first_free_x = win_test["start"][1] + win_test["size"][1] \
  67                         + sep_size
  68                     last_free_x = win_high["start"][1] + win_high["size"][1]
  69                     if (win["size"][0] <= screen_size[0] - next_free_y and
  70                             win["size"][1] <= last_free_x - first_free_x):
  71                         win["start"][1] = first_free_x
  72                         win["start"][0] = next_free_y
  73                         break
  74                     win_test = win_high
  75
  76     global screen_size, stdscr
  77     curses.endwin()
  78     stdscr = curses.initscr()
  79     screen_size = stdscr.getmaxyx()
  80     for win in windows:
  81         set_window_size()
  82         place_window()
  83     cursed_main.redraw = True
  84
  85
  86 def draw_screen():
  87
  88     def healthy_addch(y, x, char, attr=0):
  89     """Bizarre workaround for <http://stackoverflow.com/questions/7063128/>."""
  90         if y == screen_size[0] - 1 and x == screen_size[1] - 1:
  91             char_before = stdscr.inch(y, x - 1)
  92             stdscr.addch(y, x - 1, char, attr)
  93             stdscr.insstr(y, x - 1, " ")
  94             stdscr.addch(y, x - 1, char_before)
  95         else:
  96             stdscr.addch(y, x, char, attr)
  97
  98     def draw_window_border_lines():
  99         for win in windows:
 100             for k in range(2):
 101                 j = win["start"][int(k == 0)] - sep_size
 102                 if (j >= 0 and j < screen_size[int(k == 0)]):
 103                     start = win["start"][k]
 104                     # start = start if start >= 0 else 0
 105                     end = win["start"][k] + win["size"][k]
 106                     end = end if end < screen_size[k] else screen_size[k]
 107                     if k:
 108                         [healthy_addch(j, i, '-') for i in range(start, end)]
 109                     else:
 110                         [healthy_addch(i, j, '|') for i in range(start, end)]
 111
 112     def draw_window_border_corners():
 113         for win in windows:
 114             up = win["start"][0] - sep_size
 115             down = win["start"][0] + win["size"][0]
 116             left = win["start"][1] - sep_size
 117             right = win["start"][1] + win["size"][1]
 118             if (up >= 0 and up < screen_size[0]):
 119                 if (left >= 0 and left < screen_size[1]):
 120                     healthy_addch(up, left, '+')
 121                 if (right >= 0 and right < screen_size[1]):
 122                     healthy_addch(up, right, '+')
 123             if (down >= 0 and down < screen_size[0]):
 124                 if (left >= 0 and left < screen_size[1]):
 125                     healthy_addch(down, left, '+')
 126                 if (right >= 0 and right < screen_size[1]):
 127                     healthy_addch(down, right, '+')
 128
 129     def draw_window_contents():
 130         def draw_winmap():
 131             stop = [0, 0]
 132             for i in range(2):
 133                 stop[i] = win["size"][i] + offset[i]
 134                 if stop[i] >= winmap_size[i]:
 135                     stop[i] = winmap_size[i]
 136             for y in range(offset[0], stop[0]):
 137                 for x in range(offset[1], stop[1]):
 138                     cell = winmap[y * winmap_size[1] + x]
 139                     y_in_screen = win["start"][0] + (y - offset[0])
 140                     x_in_screen = win["start"][1] + (x - offset[1])
 141                     if (y_in_screen < screen_size[0]
 142                             and x_in_screen < screen_size[1]):
 143                         healthy_addch(y_in_screen, x_in_screen, cell)
 144         def draw_scroll_hints():
 145             def draw_scroll_string(n_lines_outside):
 146                 hint = ' ' + str(n_lines_outside + 1) + ' more ' + unit + ' '
 147                 if len(hint) <= win["size"][ni]:
 148                     non_hint_space = win["size"][ni] - len(hint)
 149                     hint_offset = int(non_hint_space / 2)
 150                     for j in range(win["size"][ni] - non_hint_space):
 151                         pos_2 = win["start"][ni] + hint_offset + j
 152                         x, y = (pos_2, pos_1) if ni else (pos_1, pos_2)
 153                         healthy_addch(y, x, hint[j], curses.A_REVERSE)
 154             def draw_scroll_arrows(ar1, ar2):
 155                 for j in range(win["size"][ni]):
 156                     pos_2 = win["start"][ni] + j
 157                     x, y = (pos_2, pos_1) if ni else (pos_1, pos_2)
 158                     healthy_addch(y, x, ar1 if ni else ar2, curses.A_REVERSE)
 159             for i in range(2):
 160                 ni = int(i == 0)
 161                 unit = 'rows' if ni else 'columns'
 162                 if (offset[i] > 0):
 163                     pos_1 = win["start"][i]
 164                     draw_scroll_arrows('^', '<')
 165                     draw_scroll_string(offset[i])
 166                 if (winmap_size[i] > offset[i] + win["size"][i]):
 167                     pos_1 = win["start"][i] + win["size"][i] - 1
 168                     draw_scroll_arrows('v', '>')
 169                     draw_scroll_string(winmap_size[i] - offset[i]
 170                         - win["size"][i])
 171         for win in windows:
 172             offset, winmap_size, winmap = win["func"]()
 173             draw_winmap()
 174             draw_scroll_hints()
 175
 176     stdscr.clear()
 177     draw_window_border_lines()
 178     draw_window_border_corners()
 179     draw_window_contents()
 180     stdscr.refresh()
 181
 182
 183 def read_worldstate():
 184     if not os.access(io["path_worldstate"], os.F_OK):
 185         msg = "No world state file found at " + io["path_worldstate"] + "."
 186         raise SystemExit(msg)
 187     read_anew = False
 188     worldstate_file = open(io["path_worldstate"], "r")
 189     turn_string = worldstate_file.readline()
 190     if int(turn_string) != world_data["turn"]:
 191         read_anew = True
 192     if not read_anew: # In rare cases, world may change, but not turn number.
 193         mtime = os.stat(io["path_worldstate"])
 194         if mtime != read_worldstate.last_checked_mtime:
 195             read_worldstate.last_checked_mtime = mtime
 196             read_anew = True
 197     if read_anew:
 198         cursed_main.redraw = True
 199         world_data["turn"] = int(turn_string)
 200         world_data["lifepoints"] = int(worldstate_file.readline())
 201         world_data["satiation"] = int(worldstate_file.readline())
 202         world_data["inventory"] = []
 203         while True:
 204             line = worldstate_file.readline().replace("\n", "")
 205             if line == '%':
 206                 break
 207             world_data["inventory"] += [line]
 208         world_data["position"][0] = int(worldstate_file.readline())
 209         world_data["position"][1] = int(worldstate_file.readline())
 210         world_data["map_size"] = int(worldstate_file.readline())
 211     worldstate_file.close()
 212 read_worldstate.last_checked_mtime = -1
 213
 214
 215 def read_message_queue():
 216     while (len(message_queue["messages"]) > 1
 217         or (len(message_queue["messages"]) == 0
 218             and not message_queue["open_end"])):
 219         message = message_queue["messages"].pop(0)
 220         if message[0:4] == "LOG ":
 221             world_data["log"] += [message[4:]]
 222             cursed_main.redraw = True
 223
 224
 225 def cursed_main(stdscr):
 226
 227     def ping_test():
 228         half_wait_time = 5
 229         if len(new_data_from_server) > 0:
 230             ping_test.sent = False
 231         elif ping_test.wait_start + half_wait_time < time.time():
 232             if not ping_test.sent:
 233                 io["file_out"].write("PING\n")
 234                 io["file_out"].flush()
 235                 ping_test.sent = True
 236                 ping_test.wait_start = time.time()
 237             elif ping_test.sent:
 238                 raise SystemExit("Server not answering anymore.")
 239     ping_test.wait_start = 0
 240
 241     def read_into_message_queue():
 242         if new_data_from_server == "":
 243             return
 244         new_open_end = False
 245         if new_data_from_server[-1] is not "\n":
 246             new_open_end = True
 247         new_messages = new_data_from_server.splitlines()
 248         if message_queue["open_end"]:
 249             message_queue["messages"][-1] += new_messages[0]
 250             del new_messages[0]
 251         message_queue["messages"] += new_messages
 252         if new_open_end:
 253             message_queue["open_end"] = True
 254
 255     curses.noecho()
 256     curses.curs_set(False)
 257     # stdscr.keypad(True)
 258     signal.signal(signal.SIGWINCH,
 259         lambda ignore_1, ignore_2: set_window_geometries())
 260     set_window_geometries()
 261     delay = 1
 262     while True:
 263         stdscr.timeout(delay)
 264         delay = delay * 2 if delay < 1000 else delay
 265         if cursed_main.redraw:
 266             delay = 1
 267             draw_screen()
 268             cursed_main.redraw = False
 269         char = stdscr.getch()
 270         if char >= 0 and chr(char) in commands:
 271             commands[chr(char)]()
 272             cursed_main.redraw = True
 273         new_data_from_server = io["file_in"].read()
 274         ping_test()
 275         read_into_message_queue()
 276         read_worldstate()
 277         read_message_queue()
 278
 279
 280 def win_foo():
 281     winmap = ['.', 'o', '.', 'o', 'O', 'o', '.', 'o', '.', 'x', 'y', 'x']
 282     winmap_size = [4, 3]
 283     offset = [0, 0]
 284     return offset, winmap_size, winmap
 285
 286
 287 def win_inventory():
 288     winmap = ""
 289     winmap_size = [0, 0]
 290     for line in world_data["inventory"]:
 291         winmap_size[1] = winmap_size[1] if len(line) <= winmap_size[1] \
 292             else len(line)
 293     for line in world_data["inventory"]:
 294         padding_size = winmap_size[1] - len(line)
 295         winmap += line + (" " * padding_size)
 296         winmap_size[0] = winmap_size[0] + 1
 297     offset = [0, 0]
 298     return offset, winmap_size, winmap
 299
 300
 301 def win_info():
 302     winmap = "T: " + str(world_data["turn"]) \
 303         + " H: " + str(world_data["lifepoints"]) \
 304         + " S: " + str(world_data["satiation"])
 305     winmap_size = [1, len(winmap)]
 306     offset = [0, 0]
 307     return offset, winmap_size, winmap
 308
 309
 310 def win_log():
 311     win_size = next(win["size"] for win in windows if win["func"] == win_log)
 312     offset = [0, 0]
 313     winmap = ""
 314     number_of_lines = 0
 315     for line in world_data["log"]:
 316         number_of_lines += math.ceil(len(line) / win_size[1])
 317         padding_size = win_size[1] - (len(line) % win_size[1])
 318         winmap += line + (padding_size * " ")
 319     if number_of_lines < win_size[0]:
 320         winmap = (" " * win_size[1] * (win_size[0] - number_of_lines)) + winmap
 321         number_of_lines = win_size[0]
 322     elif number_of_lines > win_size[0]:
 323         offset[0] = number_of_lines - win_size[0]
 324     winmap_size = [number_of_lines, win_size[1]]
 325     return offset, winmap_size, winmap
 326
 327
 328 def command_quit():
 329     io["file_out"].write("QUIT\n")
 330     io["file_out"].flush()
 331     raise SystemExit("Received QUIT command, forwarded to server, leaving.")
 332
 333
 334 windows = [
 335     {"config": [1, 33], "func": win_info},
 336     {"config": [-7, 33], "func": win_log},
 337     {"config": [4, 16], "func": win_inventory},
 338     {"config": [4, 16], "func": win_foo},
 339     {"config": [0, -34], "func": win_foo}
 340 ]
 341 io = {
 342     "path_out": "server/in",
 343     "path_in": "server/out",
 344     "path_worldstate": "server/worldstate"
 345 }
 346 commands = {
 347     "Q": command_quit
 348 }
 349 message_queue = {
 350     "open_end": False,
 351     "messages": []
 352 }
 353 world_data = {
 354     "inventory": [],
 355     "lifepoints": -1,
 356     "log": [],
 357     "map_size": -1,
 358     "position": [-1, -1],
 359     "satiation": -1,
 360     "turn": -1
 361 }
 362 sep_size = 1  # Width of inter-window borders and title bars.
 363 stdscr = None
 364 screen_size = [0,0]
 365
 366
 367 try:
 368     if (not os.access(io["path_out"], os.F_OK)):
 369         msg = "No server input file found at " + io["path_out"] + "."
 370         raise SystemExit(msg)
 371     io["file_out"] = open(io["path_out"], "a")
 372     io["file_in"] = open(io["path_in"], "r")
 373     curses.wrapper(cursed_main)
 374 except SystemExit as exit:
 375     print("ABORTING: " + exit.args[0])
 376 except:
 377     print("SOMETHING WENT WRONG IN UNEXPECTED WAYS")
 378     raise
 379 finally:
 380     if "file_out" in io:
 381         io["file_out"].close()
 382     if "file_in" in io:
 383         io["file_in"].close()