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Enforce sane create_unfound decisions.
[plomrogue2-experiments] / new / example_client.py
index 1b1d55fb3a0a81039f6fa009224ca061d63fdbfc..19538161a5b3d575df3d80fe9cfe77c42f3b2f26 100755 (executable)
@@ -3,16 +3,16 @@ import curses
 import socket
 import threading
 from plomrogue.parser import ArgError, Parser
-from plomrogue.commands import cmd_MAP, cmd_THING_POS, cmd_PLAYER_ID
-from plomrogue.game import Game, WorldBase
-from plomrogue.mapping import MapBase
+from plomrogue.commands import cmd_PLAYER_ID, cmd_THING_HEALTH
+from plomrogue.game import GameBase
+from plomrogue.mapping import Map, MapGeometryHex, YX
 from plomrogue.io import PlomSocket
 from plomrogue.things import ThingBase
 import types
 import queue
 
 
-class Map(MapBase):
+class ClientMap(Map):
 
     def y_cut(self, map_lines, center_y, view_height):
         map_height = len(map_lines)
@@ -36,7 +36,9 @@ class Map(MapBase):
     def format_to_view(self, map_cells, center, size):
 
         def map_cells_to_lines(map_cells):
-            map_view_chars = ['0']
+            map_view_chars = []
+            if self.start_indented:
+                map_view_chars += ['0']
             x = 0
             y = 0
             for cell in map_cells:
@@ -45,92 +47,96 @@ class Map(MapBase):
                 else:
                     map_view_chars += [cell[0], cell[1]]
                 x += 1
-                if x == self.size[1]:
+                if x == self.size.x:
                     map_view_chars += ['\n']
                     x = 0
                     y += 1
-                    if y % 2 == 0:
+                    if y % 2 == int(not self.start_indented):
                         map_view_chars += ['0']
-            if y % 2 == 0:
+            if y % 2 == int(not self.start_indented):
                 map_view_chars = map_view_chars[:-1]
             map_view_chars = map_view_chars[:-1]
             return ''.join(map_view_chars).split('\n')
 
         map_lines = map_cells_to_lines(map_cells)
-        self.y_cut(map_lines, center[0], size[0])
-        map_width = self.size[1] * 2 + 1
-        self.x_cut(map_lines, center[1] * 2, size[1], map_width)
+        self.y_cut(map_lines, center[1].y, size.y)
+        map_width = self.size.x * 2 + 1
+        self.x_cut(map_lines, center[1].x * 2, size.x, map_width)
         return map_lines
 
 
-class World(WorldBase):
-
-    def __init__(self, *args, **kwargs):
-        """Extend original with local classes and empty default map.
-
-        We need the empty default map because we draw the map widget
-        on any update, even before we actually receive map data.
-        """
-        super().__init__(*args, **kwargs)
-        self.map_ = Map()
-        self.player_inventory = []
-        self.player_id = 0
-        self.pickable_items = []
-
-    def new_map(self, yx):
-        self.map_ = Map(yx)
-
-    @property
-    def player(self):
-        return self.get_thing(self.player_id)
-
-
 def cmd_LAST_PLAYER_TASK_RESULT(game, msg):
     if msg != "success":
         game.log(msg)
 cmd_LAST_PLAYER_TASK_RESULT.argtypes = 'string'
 
+
 def cmd_TURN_FINISHED(game, n):
     """Do nothing. (This may be extended later.)"""
     pass
 cmd_TURN_FINISHED.argtypes = 'int:nonneg'
 
+
 def cmd_TURN(game, n):
     """Set game.turn to n, empty game.things."""
-    game.world.turn = n
-    game.world.things = []
-    game.world.pickable_items = []
+    game.log_text = ''
+    game.turn = n
+    game.things = []
+    game.pickable_items[:] = []
 cmd_TURN.argtypes = 'int:nonneg'
 
+
+def cmd_VISIBLE_MAP(game, size, indent_first_line):
+    game.new_map(size, indent_first_line)
+cmd_VISIBLE_MAP.argtypes = 'yx_tuple:pos bool'
+
+
 def cmd_VISIBLE_MAP_LINE(game, y, terrain_line):
-    game.world.map_.set_line(y, terrain_line)
+    game.map_.set_line(y, terrain_line)
 cmd_VISIBLE_MAP_LINE.argtypes = 'int:nonneg string'
 
+
 def cmd_GAME_STATE_COMPLETE(game):
     game.tui.to_update['turn'] = True
     game.tui.to_update['map'] = True
     game.tui.to_update['inventory'] = True
 
+
 def cmd_THING_TYPE(game, i, type_):
-    t = game.world.get_thing(i)
+    t = game.get_thing(i, create_unfound=True)
     t.type_ = type_
 cmd_THING_TYPE.argtypes = 'int:nonneg string'
 
+
+def cmd_THING_POS(game, i, yx):
+    t = game.get_thing(i,create_unfound=True)
+    t.position = YX(0,0), yx
+cmd_THING_POS.argtypes = 'int:nonneg yx_tuple:nonneg'
+
+
 def cmd_PLAYER_INVENTORY(game, ids):
-    game.world.player_inventory = ids  # TODO: test whether valid IDs
+    game.player_inventory[:] = ids  # TODO: test whether valid IDs
+    game.tui.to_update['inventory'] = True
 cmd_PLAYER_INVENTORY.argtypes = 'seq:int:nonneg'
 
+
 def cmd_PICKABLE_ITEMS(game, ids):
-    game.world.pickable_items = ids
+    game.pickable_items[:] = ids
     game.tui.to_update['pickable_items'] = True
 cmd_PICKABLE_ITEMS.argtypes = 'seq:int:nonneg'
 
 
-class Game:
+class Game(GameBase):
 
-    def __init__(self):
+    def __init__(self, *args, **kwargs):
+        super().__init__(*args, **kwargs)
+        self.map_ = ClientMap()  # we need an empty default map cause we draw
+        self.offset = YX(0,0)    # the map widget even before we get a real one
+        self.player_inventory = []
+        self.player_id = 0
+        self.pickable_items = []
         self.parser = Parser(self)
-        self.world = World(self)
+        self.map_geometry = MapGeometryHex()
         self.thing_type = ThingBase
         self.commands = {'LAST_PLAYER_TASK_RESULT': cmd_LAST_PLAYER_TASK_RESULT,
                          'TURN_FINISHED': cmd_TURN_FINISHED,
@@ -139,14 +145,22 @@ class Game:
                          'PLAYER_ID': cmd_PLAYER_ID,
                          'PLAYER_INVENTORY': cmd_PLAYER_INVENTORY,
                          'GAME_STATE_COMPLETE': cmd_GAME_STATE_COMPLETE,
-                         'MAP': cmd_MAP,
+                         'VISIBLE_MAP': cmd_VISIBLE_MAP,
                          'PICKABLE_ITEMS': cmd_PICKABLE_ITEMS,
                          'THING_TYPE': cmd_THING_TYPE,
+                         'THING_HEALTH': cmd_THING_HEALTH,
                          'THING_POS': cmd_THING_POS}
         self.log_text = ''
         self.do_quit = False
         self.tui = None
 
+    def new_map(self, size, indent_first_line):
+        self.map_ = ClientMap(size, start_indented=indent_first_line)
+
+    @property
+    def player(self):
+        return self.get_thing(self.player_id, create_unfound=False)
+
     def get_command(self, command_name):
         from functools import partial
         if command_name in self.commands:
@@ -184,8 +198,8 @@ class Game:
             symbol = '@'
         elif type_ == 'monster':
             symbol = 'm'
-        elif type_ == 'item':
-            symbol = 'i'
+        elif type_ == 'food':
+            symbol = 'f'
         return symbol
 
 
@@ -204,7 +218,7 @@ class Widget:
         self.check_updates = check_updates
         self.tui = tui
         self.start = start
-        self.win = curses.newwin(1, 1, self.start[0], self.start[1])
+        self.win = curses.newwin(1, 1, self.start.y, self.start.x)
         self.size_def = size  # store for re-calling .size on SIGWINCH
         self.size = size
         self.do_update = True
@@ -213,20 +227,22 @@ class Widget:
 
     @property
     def size(self):
-        return self.win.getmaxyx()
+        return YX(*self.win.getmaxyx())
 
     @size.setter
     def size(self, size):
         """Set window size. Size be y,x tuple. If y or x None, use legal max."""
         n_lines, n_cols = size
+        getmaxyx = YX(*self.tui.stdscr.getmaxyx())
         if n_lines is None:
-            n_lines = self.tui.stdscr.getmaxyx()[0] - self.start[0]
+            n_lines = getmaxyx.y - self.start.y
         if n_cols is None:
-            n_cols = self.tui.stdscr.getmaxyx()[1] - self.start[1]
+            n_cols = getmaxyx.x - self.start.x
         self.win.resize(n_lines, n_cols)
 
     def __len__(self):
-        return self.win.getmaxyx()[0] * self.win.getmaxyx()[1]
+        getmaxyx = YX(*self.win.getmaxyx())
+        return getmaxyx.y * getmaxyx.x
 
     def safe_write(self, foo):
 
@@ -251,9 +267,9 @@ class Widget:
         else:  # workaround to <https://stackoverflow.com/q/7063128>
             cut = chars_with_attrs[:len(self) - 1]
             last_char_with_attr = chars_with_attrs[len(self) - 1]
-            self.win.addstr(self.size[0] - 1, self.size[1] - 2,
+            self.win.addstr(self.size.y - 1, self.size.x - 2,
                             last_char_with_attr[0], last_char_with_attr[1])
-            self.win.insstr(self.size[0] - 1, self.size[1] - 2, ' ')
+            self.win.insstr(self.size.y - 1, self.size.x - 2, ' ')
             self.win.move(0, 0)
             for char_with_attr in cut:
                 self.win.addstr(char_with_attr[0], char_with_attr[1])
@@ -282,13 +298,13 @@ class EditWidget(Widget):
         self.safe_write((''.join(self.tui.to_send), curses.color_pair(1)))
 
 
-class LogWidget(Widget):
+class TextLinesWidget(Widget):
 
     def draw(self):
-        line_width = self.size[1]
-        log_lines = self.tui.game.log_text.split('\n')
+        lines = self.get_text_lines()
+        line_width = self.size.x
         to_join = []
-        for line in log_lines:
+        for line in lines:
             to_pad = line_width - (len(line) % line_width)
             if to_pad == line_width:
                 to_pad = 0
@@ -296,33 +312,68 @@ class LogWidget(Widget):
         self.safe_write((''.join(to_join), curses.color_pair(3)))
 
 
+class LogWidget(TextLinesWidget):
+
+    def get_text_lines(self):
+        return self.tui.game.log_text.split('\n')
+
+
+class DescriptorWidget(TextLinesWidget):
+
+    def get_text_lines(self):
+        lines = []
+        pos_i = self.tui.game.map_.\
+                get_position_index(self.tui.examiner_position[1])
+        terrain = self.tui.game.map_.terrain[pos_i]
+        lines = [terrain]
+        for t in self.tui.game.things_at_pos(self.tui.examiner_position):
+            lines += [t.type_]
+        return lines
+
+
 class PopUpWidget(Widget):
 
     def draw(self):
         self.safe_write(self.tui.popup_text)
 
     def reconfigure(self):
-        self.visible = True
         size = (1, len(self.tui.popup_text))
         self.size = size
         self.size_def = size
-        offset_y = int((self.tui.stdscr.getmaxyx()[0] / 2) - (size[0] / 2))
-        offset_x = int((self.tui.stdscr.getmaxyx()[1] / 2) - (size[1] / 2))
-        self.start = (offset_y, offset_x)
-        self.win.mvwin(self.start[0], self.start[1])
+        getmaxyx = YX(*self.tui.stdscr.getmaxyx())
+        offset_y = int(getmaxyx.y / 2 - size.y / 2)
+        offset_x = int(getmaxyx.x / 2 - size.x / 2)
+        self.start = YX(offset_y, offset_x)
+        self.win.mvwin(self.start.y, self.start.x)
 
 
 class ItemsSelectorWidget(Widget):
 
-    def draw_item_selector(self, title, selection):
-        lines = [title]
+    def __init__(self, headline, selection, *args, **kwargs):
+        super().__init__(*args, **kwargs)
+        self.headline = headline
+        self.selection = selection
+
+    def ensure_freshness(self, *args, **kwargs):
+        # We only update pointer on non-empty selection so that the zero-ing
+        # of the selection at TURN_FINISHED etc. before pulling in a new
+        # state does not destroy any memory of previous item pointer positions.
+        if len(self.selection) > 0 and\
+           len(self.selection) < self.tui.item_pointer + 1 and\
+           self.tui.item_pointer > 0:
+            self.tui.item_pointer = max(0, len(self.selection) - 1)
+            self.tui.to_update[self.check_updates[0]] = True
+        super().ensure_freshness(*args, **kwargs)
+
+    def draw(self):
+        lines = [self.headline]
         counter = 0
-        for id_ in selection:
+        for id_ in self.selection:
             pointer = '*' if counter == self.tui.item_pointer else ' '
-            t = self.tui.game.world.get_thing(id_)
+            t = self.tui.game.get_thing(id_, create_unfound=False)
             lines += ['%s %s' % (pointer, t.type_)]
             counter += 1
-        line_width = self.size[1]
+        line_width = self.size.x
         to_join = []
         for line in lines:
             to_pad = line_width - (len(line) % line_width)
@@ -332,39 +383,32 @@ class ItemsSelectorWidget(Widget):
         self.safe_write((''.join(to_join), curses.color_pair(3)))
 
 
-class InventoryWidget(ItemsSelectorWidget):
-
-    def draw(self):
-        self.draw_item_selector('INVENTORY:',
-                                self.tui.game.world.player_inventory)
-
-class PickableItemsWidget(ItemsSelectorWidget):
-
-    def draw(self):
-        self.draw_item_selector('PICKABLE:',
-                                self.tui.game.world.pickable_items)
-
-
 class MapWidget(Widget):
 
     def draw(self):
 
         def annotated_terrain():
-            terrain_as_list = list(self.tui.game.world.map_.terrain[:])
-            for t in self.tui.game.world.things:
-                pos_i = self.tui.game.world.map_.get_position_index(t.position)
+            terrain_as_list = list(self.tui.game.map_.terrain[:])
+            for t in self.tui.game.things:
+                if t.id_ in self.tui.game.player_inventory:
+                    continue
+                pos_i = self.tui.game.map_.get_position_index(t.position[1])
                 symbol = self.tui.game.symbol_for_type(t.type_)
-                if terrain_as_list[pos_i][0] in {'i', '@', 'm'}:
+                if terrain_as_list[pos_i][0] in {'f', '@', 'm'}:
                     old_symbol = terrain_as_list[pos_i][0]
                     if old_symbol in {'@', 'm'}:
                         symbol = old_symbol
                     terrain_as_list[pos_i] = (symbol, '+')
                 else:
                     terrain_as_list[pos_i] = symbol
+            if self.tui.examiner_mode:
+                pos_i = self.tui.game.map_.\
+                        get_position_index(self.tui.examiner_position[1])
+                terrain_as_list[pos_i] = (terrain_as_list[pos_i][0], '?')
             return terrain_as_list
 
         def pad_or_cut_x(lines):
-            line_width = self.size[1]
+            line_width = self.size.x
             for y in range(len(lines)):
                 line = lines[y]
                 if line_width > len(line):
@@ -374,35 +418,39 @@ class MapWidget(Widget):
                     lines[y] = line[:line_width]
 
         def pad_y(lines):
-            if len(lines) < self.size[0]:
-                to_pad = self.size[0] - len(lines)
-                lines += to_pad * ['0' * self.size[1]]
+            if len(lines) < self.size.y:
+                to_pad = self.size.y - len(lines)
+                lines += to_pad * ['0' * self.size.x]
 
         def lines_to_colored_chars(lines):
             chars_with_attrs = []
             for c in ''.join(lines):
                 if c in {'@', 'm'}:
                     chars_with_attrs += [(c, curses.color_pair(1))]
-                elif c == 'i':
+                elif c == 'f':
                     chars_with_attrs += [(c, curses.color_pair(4))]
                 elif c == '.':
                     chars_with_attrs += [(c, curses.color_pair(2))]
                 elif c in {'x', 'X', '#'}:
                     chars_with_attrs += [(c, curses.color_pair(3))]
+                elif c == '?':
+                    chars_with_attrs += [(c, curses.color_pair(5))]
                 else:
                     chars_with_attrs += [c]
             return chars_with_attrs
 
-        if self.tui.game.world.map_.terrain == '':
+        if self.tui.game.map_.terrain == '':
             lines = []
             pad_y(lines)
             self.safe_write(''.join(lines))
             return
 
         annotated_terrain = annotated_terrain()
-        center = self.tui.game.world.player.position
-        lines = self.tui.game.world.map_.format_to_view(annotated_terrain,
-                                                        center, self.size)
+        center = self.tui.game.player.position
+        if self.tui.examiner_mode:
+            center = self.tui.examiner_position
+        lines = self.tui.game.map_.\
+                format_to_view(annotated_terrain, center, self.size)
         pad_or_cut_x(lines)
         pad_y(lines)
         self.safe_write(lines_to_colored_chars(lines))
@@ -411,7 +459,15 @@ class MapWidget(Widget):
 class TurnWidget(Widget):
 
     def draw(self):
-        self.safe_write((str(self.tui.game.world.turn), curses.color_pair(2)))
+        self.safe_write((str(self.tui.game.turn), curses.color_pair(2)))
+
+
+class HealthWidget(Widget):
+
+    def draw(self):
+        if hasattr(self.tui.game.player, 'health'):
+            self.safe_write((str(self.tui.game.player.health),
+                             curses.color_pair(2)))
 
 
 class TextLineWidget(Widget):
@@ -434,6 +490,11 @@ class TUI:
         self.parser = Parser(self.game)
         self.to_update = {}
         self.item_pointer = 0
+        self.examiner_position = (YX(0,0), YX(0, 0))
+        self.examiner_mode = False
+        self.popup_text = 'Hi bob'
+        self.to_send = []
+        self.draw_popup_if_visible = True
         curses.wrapper(self.loop)
 
     def loop(self, stdscr):
@@ -449,70 +510,191 @@ class TUI:
             trigger = widget_2.check_updates[0]
             self.to_update[trigger] = True
 
-        def pick_or_drop_menu(action_key, widget, selectables, task,
-                              bonus_command=None):
-            if len(selectables) < self.item_pointer + 1 and\
-               self.item_pointer > 0:
-                self.item_pointer = len(selectables) - 1
+        def selectables_menu(key, widget, selectables, f):
             if key == 'c':
                 switch_widgets(widget, map_widget)
             elif key == 'j':
                 self.item_pointer += 1
             elif key == 'k' and self.item_pointer > 0:
                 self.item_pointer -= 1
-            elif key == action_key and len(selectables) > 0:
-                id_ = selectables[self.item_pointer]
-                self.socket.send('TASK:%s %s' % (task, id_))
-                if bonus_command:
-                    self.socket.send(bonus_command)
-                if self.item_pointer > 0:
-                    self.item_pointer -= 1
-            else:
+            elif not f(key, selectables):
                 return
             trigger = widget.check_updates[0]
             self.to_update[trigger] = True
 
+        def pickup_menu(key):
+
+            def f(key, selectables):
+                if key == 'p' and len(selectables) > 0:
+                    id_ = selectables[self.item_pointer]
+                    self.socket.send('TASK:PICKUP %s' % id_)
+                    self.socket.send('GET_PICKABLE_ITEMS')
+                else:
+                    return False
+                return True
+
+            selectables_menu(key, pickable_items_widget,
+                             self.game.pickable_items, f)
+
+        def inventory_menu(key):
+
+            def f(key, selectables):
+                if key == 'd' and len(selectables) > 0:
+                    id_ = selectables[self.item_pointer]
+                    self.socket.send('TASK:DROP %s' % id_)
+                elif key == 'e' and len(selectables) > 0:
+                    id_ = selectables[self.item_pointer]
+                    self.socket.send('TASK:EAT %s' % id_)
+                else:
+                    return False
+                return True
+
+            selectables_menu(key, inventory_widget,
+                             self.game.player_inventory, f)
+
+        def move_examiner(direction):
+            start_pos = self.examiner_position
+            new_examine_pos = self.game.map_geometry.move(start_pos, direction,
+                                                          self.game.map_.size,
+                                                          self.game.map_.start_indented)
+            if new_examine_pos[0] == (0,0):
+                self.examiner_position = new_examine_pos
+            self.to_update['map'] = True
+
+        def switch_to_pick_or_drop(target_widget):
+            self.item_pointer = 0
+            switch_widgets(map_widget, target_widget)
+            if self.examiner_mode:
+                self.examiner_mode = False
+                switch_widgets(descriptor_widget, log_widget)
+
+        def toggle_examiner_mode():
+            if self.examiner_mode:
+                self.examiner_mode = False
+                switch_widgets(descriptor_widget, log_widget)
+            else:
+                self.examiner_mode = True
+                self.examiner_position = self.game.player.position
+                switch_widgets(log_widget, descriptor_widget)
+            self.to_update['map'] = True
+
+        def toggle_popup():
+            if popup_widget.visible:
+                popup_widget.visible = False
+                for w in top_widgets:
+                    w.ensure_freshness(True)
+            else:
+                self.to_update['popup'] = True
+                popup_widget.visible = True
+                popup_widget.reconfigure()
+                self.draw_popup_if_visible = True
+
+        def try_write_keys():
+            if len(key) == 1 and key in ASCII_printable and \
+                    len(self.to_send) < len(edit_line_widget):
+                self.to_send += [key]
+                self.to_update['edit'] = True
+            elif key == 'KEY_BACKSPACE':
+                self.to_send[:] = self.to_send[:-1]
+                self.to_update['edit'] = True
+            elif key == '\n':  # Return key
+                self.socket.send(''.join(self.to_send))
+                self.to_send[:] = []
+                self.to_update['edit'] = True
+
+        def try_examiner_keys():
+            if key == 'w':
+                move_examiner('UPLEFT')
+            elif key == 'e':
+                move_examiner('UPRIGHT')
+            elif key == 's':
+                move_examiner('LEFT')
+            elif key == 'd':
+                move_examiner('RIGHT')
+            elif key == 'x':
+                move_examiner('DOWNLEFT')
+            elif key == 'c':
+                move_examiner('DOWNRIGHT')
+
+        def try_player_move_keys():
+            if key == 'w':
+                self.socket.send('TASK:MOVE UPLEFT')
+            elif key == 'e':
+                self.socket.send('TASK:MOVE UPRIGHT')
+            elif key == 's':
+                self.socket.send('TASK:MOVE LEFT')
+            elif key == 'd':
+                self.socket.send('TASK:MOVE RIGHT')
+            elif key == 'x':
+                self.socket.send('TASK:MOVE DOWNLEFT')
+            elif key == 'c':
+                self.socket.send('TASK:MOVE DOWNRIGHT')
+
+        def init_colors():
+            curses.init_pair(1, curses.COLOR_BLACK, curses.COLOR_RED)
+            curses.init_pair(2, curses.COLOR_BLACK, curses.COLOR_GREEN)
+            curses.init_pair(3, curses.COLOR_BLACK, curses.COLOR_BLUE)
+            curses.init_pair(4, curses.COLOR_BLACK, curses.COLOR_YELLOW)
+            curses.init_pair(5, curses.COLOR_BLACK, curses.COLOR_WHITE)
+
+        # Basic curses initialization work.
         setup_screen(stdscr)
-        curses.init_pair(1, curses.COLOR_BLACK, curses.COLOR_RED)
-        curses.init_pair(2, curses.COLOR_BLACK, curses.COLOR_GREEN)
-        curses.init_pair(3, curses.COLOR_BLACK, curses.COLOR_BLUE)
-        curses.init_pair(4, curses.COLOR_BLACK, curses.COLOR_YELLOW)
         curses.curs_set(False)  # hide cursor
-        self.to_send = []
-        edit_widget = TextLineWidget('SEND:', self, (0, 0), (1, 20))
-        edit_line_widget = EditWidget(self, (0, 6), (1, 14), ['edit'])
+        init_colors()
+
+        # With screen initialized, set up widgets with their curses windows.
+        edit_widget = TextLineWidget('SEND:', self, YX(0, 0), YX(1, 20))
+        edit_line_widget = EditWidget(self, YX(0, 6), YX(1, 14), ['edit'])
         edit_widget.children += [edit_line_widget]
-        turn_widget = TextLineWidget('TURN:', self, (2, 0), (1, 20))
-        turn_widget.children += [TurnWidget(self, (2, 6), (1, 14), ['turn'])]
-        log_widget = LogWidget(self, (4, 0), (None, 20), ['log'])
-        map_widget = MapWidget(self, (0, 21), (None, None), ['map'])
-        inventory_widget = InventoryWidget(self, (0, 21), (None, None),
-                                           ['inventory'], False)
-        pickable_items_widget = PickableItemsWidget(self, (0, 21), (None, None),
-                                                    ['pickable_items'], False)
-        top_widgets = [edit_widget, turn_widget, log_widget, map_widget,
-                       inventory_widget, pickable_items_widget]
-        popup_widget = PopUpWidget(self, (0, 0), (1, 1), visible=False)
-        self.popup_text = 'Hi bob'
-        write_mode = True
+        turn_widget = TextLineWidget('TURN:', self, YX(2, 0), YX(1, 20))
+        turn_widget.children += [TurnWidget(self, YX(2, 6), YX(1, 14), ['turn'])]
+        health_widget = TextLineWidget('HEALTH:', self, YX(3, 0), YX(1, 20))
+        health_widget.children += [HealthWidget(self, YX(3, 8), YX(1, 12), ['turn'])]
+        log_widget = LogWidget(self, YX(5, 0), YX(None, 20), ['log'])
+        descriptor_widget = DescriptorWidget(self, YX(5, 0), YX(None, 20),
+                                             ['map'], False)
+        map_widget = MapWidget(self, YX(0, 21), YX(None, None), ['map'])
+        inventory_widget = ItemsSelectorWidget('INVENTORY:',
+                                               self.game.player_inventory,
+                                               self, YX(0, 21), YX(None, None),
+                                               ['inventory'], False)
+        pickable_items_widget = ItemsSelectorWidget('PICKABLE:',
+                                                    self.game.pickable_items,
+                                                    self, YX(0, 21),
+                                                    YX(None, None),
+                                                    ['pickable_items'],
+                                                    False)
+        top_widgets = [edit_widget, turn_widget, health_widget, log_widget,
+                       descriptor_widget, map_widget, inventory_widget,
+                       pickable_items_widget]
+        popup_widget = PopUpWidget(self, YX(0, 0), YX(1, 1), visible=False)
+
+        # Ensure initial window state before loop starts.
         for w in top_widgets:
             w.ensure_freshness(True)
-        draw_popup_if_visible = True
+        self.socket.send('GET_GAMESTATE')
+        write_mode = False
         while True:
+
+            # Draw screen.
             for w in top_widgets:
-                did_refresh = w.ensure_freshness()
-                draw_popup_if_visible = did_refresh | draw_popup_if_visible
-            if popup_widget.visible and draw_popup_if_visible:
+                if w.ensure_freshness():
+                    self.draw_popup_if_visible = True
+            if popup_widget.visible and self.draw_popup_if_visible:
                 popup_widget.ensure_freshness(True)
-                draw_popup_if_visible = False
+                self.draw_popup_if_visible = False
             for k in self.to_update.keys():
                 self.to_update[k] = False
+
+            # Handle input from server.
             while True:
                 try:
                     command = self.queue.get(block=False)
                 except queue.Empty:
                     break
                 self.game.handle_input(command)
+
+            # Handle keys (and resize event read as key).
             try:
                 key = self.stdscr.getkey()
                 if key == 'KEY_RESIZE':
@@ -524,57 +706,29 @@ class TUI:
                 elif key == '\t':  # Tabulator key.
                     write_mode = False if write_mode else True
                 elif write_mode:
-                    if len(key) == 1 and key in ASCII_printable and \
-                            len(self.to_send) < len(edit_line_widget):
-                        self.to_send += [key]
-                        self.to_update['edit'] = True
-                    elif key == 'KEY_BACKSPACE':
-                        self.to_send[:] = self.to_send[:-1]
-                        self.to_update['edit'] = True
-                    elif key == '\n':  # Return key
-                        self.socket.send(''.join(self.to_send))
-                        self.to_send[:] = []
-                        self.to_update['edit'] = True
+                    try_write_keys()
                 elif key == 't':
-                    if not popup_widget.visible:
-                        self.to_update['popup'] = True
-                        popup_widget.visible = True
-                        popup_widget.reconfigure()
-                        draw_popup_if_visible = True
-                    else:
-                        popup_widget.visible = False
-                        for w in top_widgets:
-                            w.ensure_freshness(True)
+                    toggle_popup()
                 elif map_widget.visible:
-                    if key == 'w':
-                        self.socket.send('TASK:MOVE UPLEFT')
-                    elif key == 'e':
-                        self.socket.send('TASK:MOVE UPRIGHT')
-                    if key == 's':
-                        self.socket.send('TASK:MOVE LEFT')
-                    elif key == 'd':
-                        self.socket.send('TASK:MOVE RIGHT')
-                    if key == 'x':
-                        self.socket.send('TASK:MOVE DOWNLEFT')
-                    elif key == 'c':
-                        self.socket.send('TASK:MOVE DOWNRIGHT')
+                    if key == '?':
+                        toggle_examiner_mode()
                     elif key == 'p':
                         self.socket.send('GET_PICKABLE_ITEMS')
-                        self.item_pointer = 0
-                        switch_widgets(map_widget, pickable_items_widget)
+                        switch_to_pick_or_drop(pickable_items_widget)
                     elif key == 'i':
-                        self.item_pointer = 0
-                        switch_widgets(map_widget, inventory_widget)
+                        switch_to_pick_or_drop(inventory_widget)
+                    elif self.examiner_mode:
+                        try_examiner_keys()
+                    else:
+                        try_player_move_keys()
                 elif pickable_items_widget.visible:
-                    pick_or_drop_menu('p', pickable_items_widget,
-                                      self.game.world.pickable_items,
-                                      'PICKUP', 'GET_PICKABLE_ITEMS')
+                    pickup_menu(key)
                 elif inventory_widget.visible:
-                    pick_or_drop_menu('d', inventory_widget,
-                                      self.game.world.player_inventory,
-                                      'DROP')
+                    inventory_menu(key)
             except curses.error:
                 pass
+
+            # Quit when server recommends it.
             if self.game.do_quit:
                 break