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 draw_window_border_lines():
  89         for win in windows:
  90             for k in range(2):
  91                 j = win["start"][int(k == 0)] - sep_size
  92                 if (j >= 0 and j < screen_size[int(k == 0)]):
  93                     start = win["start"][k]
  94                     # start = start if start >= 0 else 0
  95                     end = win["start"][k] + win["size"][k]
  96                     end = end if end < screen_size[k] else screen_size[k]
  97                     if k:
  98                         [stdscr.addch(j, i, '-') for i in range(start, end)]
  99                     else:
 100                         [stdscr.addch(i, j, '|') for i in range(start, end)]
 101
 102     def draw_window_border_corners():
 103         for win in windows:
 104             up = win["start"][0] - sep_size
 105             down = win["start"][0] + win["size"][0]
 106             left = win["start"][1] - sep_size
 107             right = win["start"][1] + win["size"][1]
 108             if (up >= 0 and up < screen_size[0]):
 109                 if (left >= 0 and left < screen_size[1]):
 110                     stdscr.addch(up, left, '+')
 111                 if (right >= 0 and right < screen_size[1]):
 112                     stdscr.addch(up, right, '+')
 113             if (down >= 0 and down < screen_size[0]):
 114                 if (left >= 0 and left < screen_size[1]):
 115                     stdscr.addch(down, left, '+')
 116                 if (right >= 0 and right < screen_size[1]):
 117                     stdscr.addch(down, right, '+')
 118
 119     def draw_window_contents():
 120         def draw_winmap():
 121             stop = [0, 0]
 122             for i in range(2):
 123                 stop[i] = win["size"][i] + offset[i]
 124                 stop[i] = stop[i] if stop[i] < size[i] else size[i]
 125             for y in range(offset[0], stop[0]):
 126                 for x in range(offset[1], stop[1]):
 127                     cell = winmap[y * size[1] + x]
 128                     y_in_screen = win["start"][0] + (y - offset[0])
 129                     x_in_screen = win["start"][1] + (x - offset[1])
 130                     if (y_in_screen < screen_size[0]
 131                             and x_in_screen < screen_size[1]):
 132                         stdscr.addch(y_in_screen, x_in_screen, cell)
 133         def draw_scroll_hints():
 134             def draw_scroll_string(n_lines_outside):
 135                 hint = ' ' + str(n_lines_outside + 1) + ' more ' + unit + ' '
 136                 if len(hint) <= win["size"][ni]:
 137                     non_hint_space = win["size"][ni] - len(hint)
 138                     hint_offset = int(non_hint_space / 2)
 139                     for j in range(win["size"][ni] - non_hint_space):
 140                         pos_2 = win["start"][ni] + hint_offset + j
 141                         x, y = (pos_2, pos_1) if ni else (pos_1, pos_2)
 142                         stdscr.addch(y, x, hint[j], curses.A_REVERSE)
 143             def draw_scroll_arrows(ar1, ar2):
 144                 for j in range(win["size"][ni]):
 145                     pos_2 = win["start"][ni] + j
 146                     x, y = (pos_2, pos_1) if ni else (pos_1, pos_2)
 147                     stdscr.addch(y, x, ar1 if ni else ar2, curses.A_REVERSE)
 148             for i in range(2):
 149                 ni = int(i == 0)
 150                 unit = 'rows' if ni else 'columns'
 151                 if (offset[i] > 0):
 152                     pos_1 = win["start"][i]
 153                     draw_scroll_arrows('^', '<')
 154                     draw_scroll_string(offset[i])
 155                 if (size[i] > offset[i] + win["size"][i]):
 156                     pos_1 = win["start"][i] + win["size"][i] - 1
 157                     draw_scroll_arrows('v', '>')
 158                     draw_scroll_string(size[i] - offset[i] - win["size"][i])
 159         for win in windows:
 160             offset, size, winmap = win["func"]()
 161             draw_winmap()
 162             draw_scroll_hints()
 163
 164     stdscr.clear()
 165     draw_window_border_lines()
 166     draw_window_border_corners()
 167     draw_window_contents()
 168     stdscr.refresh()
 169
 170
 171 def read_worldstate():
 172     if not os.access(io["path_worldstate"], os.F_OK):
 173         msg = "No world state file found at " + io["path_worldstate"] + "."
 174         raise SystemExit(msg)
 175     read_anew = False
 176     worldstate_file = open(io["path_worldstate"], "r")
 177     turn_string = worldstate_file.readline()
 178     if int(turn_string) != world_data["turn"]:
 179         read_anew = True
 180     if not read_anew: # In rare cases, world may change, but not turn number.
 181         mtime = os.stat(io["path_worldstate"])
 182         if mtime != read_worldstate.last_checked_mtime:
 183             read_worldstate.last_checked_mtime = mtime
 184             read_anew = True
 185     if read_anew:
 186         cursed_main.redraw = True
 187         world_data["turn"] = int(turn_string)
 188         world_data["lifepoints"] = int(worldstate_file.readline())
 189         world_data["satiation"] = int(worldstate_file.readline())
 190     worldstate_file.close()
 191 read_worldstate.last_checked_mtime = -1
 192
 193
 194 def read_message_queue():
 195     while (len(message_queue["messages"]) > 1
 196         or (len(message_queue["messages"]) == 0
 197             and not message_queue["open_end"])):
 198         message = message_queue["messages"].pop(0)
 199         if message[0:4] == "LOG ":
 200             world_data["log"] += [message[4:]]
 201             cursed_main.redraw = True
 202
 203
 204 def cursed_main(stdscr):
 205
 206     def ping_test():
 207         half_wait_time = 5
 208         if len(new_data_from_server) > 0:
 209             ping_test.sent = False
 210         elif ping_test.wait_start + half_wait_time < time.time():
 211             if not ping_test.sent:
 212                 io["file_out"].write("PING\n")
 213                 io["file_out"].flush()
 214                 ping_test.sent = True
 215                 ping_test.wait_start = time.time()
 216             elif ping_test.sent:
 217                 raise SystemExit("Server not answering anymore.")
 218     ping_test.wait_start = 0
 219
 220     def read_into_message_queue():
 221         if new_data_from_server == "":
 222             return
 223         new_open_end = False
 224         if new_data_from_server[-1] is not "\n":
 225             new_open_end = True
 226         new_messages = new_data_from_server.splitlines()
 227         if message_queue["open_end"]:
 228             message_queue["messages"][-1] += new_messages[0]
 229             del new_messages[0]
 230         message_queue["messages"] += new_messages
 231         if new_open_end:
 232             message_queue["open_end"] = True
 233
 234     curses.noecho()
 235     curses.curs_set(False)
 236     # stdscr.keypad(True)
 237     signal.signal(signal.SIGWINCH,
 238         lambda ignore_1, ignore_2: set_window_geometries())
 239     set_window_geometries()
 240     delay = 1
 241     while True:
 242         stdscr.timeout(delay)
 243         delay = delay * 2 if delay < 1000 else delay
 244         if cursed_main.redraw:
 245             delay = 1
 246             draw_screen()
 247             cursed_main.redraw = False
 248         char = stdscr.getch()
 249         if char >= 0 and chr(char) in commands:
 250             commands[chr(char)]()
 251             cursed_main.redraw = True
 252         new_data_from_server = io["file_in"].read()
 253         ping_test()
 254         read_into_message_queue()
 255         read_worldstate()
 256         read_message_queue()
 257
 258
 259 def win_foo():
 260     winmap = ['.', 'o', '.', 'o', 'O', 'o', '.', 'o', '.', 'x', 'y', 'x']
 261     size = [4, 3]
 262     offset = [0, 0]
 263     return offset, size, winmap
 264
 265
 266 def win_info():
 267     winmap = "T: " + str(world_data["turn"]) \
 268         + " H: " + str(world_data["lifepoints"]) \
 269         + " S: " + str(world_data["satiation"])
 270     size = [1, len(winmap)]
 271     offset = [0, 0]
 272     return offset, size, winmap
 273
 274
 275 def win_log():
 276     win_size = next(win["size"] for win in windows if win["func"] == win_log)
 277     offset = [0, 0]
 278     winmap = ""
 279     number_of_lines = 0
 280     for line in world_data["log"]:
 281         number_of_lines += math.ceil(len(line) / win_size[1])
 282         padding_size = win_size[1] - (len(line) % win_size[1])
 283         winmap += line + (padding_size * " ")
 284     if number_of_lines < win_size[0]:
 285         winmap = (" " * win_size[1] * (win_size[0] - number_of_lines)) + winmap
 286         number_of_lines = win_size[0]
 287     elif number_of_lines > win_size[0]:
 288         offset[0] = number_of_lines - win_size[0]
 289     winmap_size = [number_of_lines, win_size[1]]
 290     return offset, winmap_size, winmap
 291
 292
 293 def command_quit():
 294     io["file_out"].write("QUIT\n")
 295     io["file_out"].flush()
 296     raise SystemExit("Received QUIT command, forwarded to server, leaving.")
 297
 298
 299 windows = [
 300     {"config": [1, 33], "func": win_info},
 301     {"config": [-7, 33], "func": win_log},
 302     {"config": [4, 16], "func": win_foo},
 303     {"config": [4, 16], "func": win_foo},
 304     {"config": [0, -34], "func": win_foo}
 305 ]
 306 io = {
 307     "path_out": "server/in",
 308     "path_in": "server/out",
 309     "path_worldstate": "server/worldstate"
 310 }
 311 commands = {
 312     "Q": command_quit
 313 }
 314 message_queue = {
 315     "open_end": False,
 316     "messages": []
 317 }
 318 world_data = {
 319     "lifepoints": -1,
 320     "log": [],
 321     "satiation": -1,
 322     "turn": -1
 323 }
 324 sep_size = 1  # Width of inter-window borders and title bars.
 325 stdscr = None
 326 screen_size = [0,0]
 327
 328
 329 try:
 330     if (not os.access(io["path_out"], os.F_OK)):
 331         msg = "No server input file found at " + io["path_out"] + "."
 332         raise SystemExit(msg)
 333     io["file_out"] = open(io["path_out"], "a")
 334     io["file_in"] = open(io["path_in"], "r")
 335     curses.wrapper(cursed_main)
 336 except SystemExit as exit:
 337     print("ABORTING: " + exit.args[0])
 338 except:
 339     print("SOMETHING WENT WRONG IN UNEXPECTED WAYS")
 340     raise
 341 finally:
 342     if "file_out" in io:
 343         io["file_out"].close()
 344     if "file_in" in io:
 345         io["file_in"].close()