Refactor.

diff --git a/server.py b/server.py
index 22cd7ec3f8ffa9a338888830a68b764549d811cb..6008346cfde27f0374e9b46817a5812c9dafcdd1 100755 (executable)
--- a/server.py
+++ b/server.py
@@ -4,16 +4,13 @@ import socketserver
 import threading
 import queue
 from parser import ArgError, Parser
+from server_.game import World, GameError
 
 
 # Avoid "Address already in use" errors.
 socketserver.TCPServer.allow_reuse_address = True
 
 
-class GameError(Exception):
-    pass
-
-
 class Server(socketserver.ThreadingTCPServer):
     """Bind together threaded IO handling server and message queue."""
 
@@ -85,104 +82,6 @@ class IO_Handler(socketserver.BaseRequestHandler):
         self.request.close()
 
 
-def move_pos(direction, pos_yx):
-    if direction == 'UP':
-        pos_yx[0] -= 1
-    elif direction == 'DOWN':
-        pos_yx[0] += 1
-    elif direction == 'RIGHT':
-        pos_yx[1] += 1
-    elif direction == 'LEFT':
-        pos_yx[1] -= 1
-
-
-class Task:
-
-    def __init__(self, thing, name, args=(), kwargs={}):
-        self.name = name
-        self.thing = thing
-        self.args = args
-        self.kwargs = kwargs
-        self.todo = 1
-
-    def check(self):
-        if self.name == 'move':
-            if len(self.args) > 0:
-                direction = self.args[0]
-            else:
-                direction = self.kwargs['direction']
-            test_pos = self.thing.position[:]
-            move_pos(direction, test_pos)
-            if test_pos[0] < 0 or test_pos[1] < 0 or \
-               test_pos[0] >= self.thing.world.map_size[0] or \
-               test_pos[1] >= self.thing.world.map_size[1]:
-                raise GameError('would move outside map bounds')
-            pos_i = test_pos[0] * self.thing.world.map_size[1] + test_pos[1]
-            map_tile = self.thing.world.map_[pos_i]
-            if map_tile != '.':
-                raise GameError('would move into illegal terrain')
-
-
-class Thing:
-
-    def __init__(self, world, type_, position):
-        self.world = world
-        self.type_ = type_
-        self.position = position
-        self.task = Task(self, 'wait')
-
-    def task_wait(self):
-        pass
-
-    def task_move(self, direction):
-        move_pos(direction, self.position)
-
-    def decide_task(self):
-        if self.position[1] > 1:
-            self.set_task('move', 'LEFT')
-        elif self.position[1] < 3:
-            self.set_task('move', 'RIGHT')
-        else:
-            self.set_task('wait')
-
-    def set_task(self, task, *args, **kwargs):
-        self.task = Task(self, task, args, kwargs)
-        self.task.check()
-
-    def proceed(self, is_AI=True):
-        """Further the thing in its tasks.
-
-        Decrements .task.todo; if it thus falls to <= 0, enacts method whose
-        name is 'task_' + self.task.name and sets .task = None. If is_AI, calls
-        .decide_task to decide a self.task.
-        """
-        self.task.todo -= 1
-        if self.task.todo <= 0:
-            task = getattr(self, 'task_' + self.task.name)
-            task(*self.task.args, **self.task.kwargs)
-            self.task = None
-        if is_AI and self.task is None:
-            self.decide_task()
-
-
-class World:
-
-    def __init__(self):
-        self.turn = 0
-        self.map_size = (5, 5)
-        self.map_ = 'xxxxx' +\
-                    'x...x' +\
-                    'x.X.x' +\
-                    'x...x' +\
-                    'xxxxx'
-        self.things = [
-            Thing(self, 'human', [3, 3]),
-            Thing(self, 'monster', [1, 1])
-        ]
-        self.player_i = 0
-        self.player = self.things[self.player_i]
-
-
 def fib(n):
     """Calculate n-th Fibonacci number. Very inefficiently."""
     if n in (1, 2):

diff --git a/server_/game.py b/server_/game.py
new file mode 100644 (file)
index 0000000..e0e63b9
--- /dev/null
+++ b/server_/game.py
@@ -0,0 +1,100 @@
+class GameError(Exception):
+    pass
+
+
+def move_pos(direction, pos_yx):
+    if direction == 'UP':
+        pos_yx[0] -= 1
+    elif direction == 'DOWN':
+        pos_yx[0] += 1
+    elif direction == 'RIGHT':
+        pos_yx[1] += 1
+    elif direction == 'LEFT':
+        pos_yx[1] -= 1
+
+
+class Task:
+
+    def __init__(self, thing, name, args=(), kwargs={}):
+        self.name = name
+        self.thing = thing
+        self.args = args
+        self.kwargs = kwargs
+        self.todo = 1
+
+    def check(self):
+        if self.name == 'move':
+            if len(self.args) > 0:
+                direction = self.args[0]
+            else:
+                direction = self.kwargs['direction']
+            test_pos = self.thing.position[:]
+            move_pos(direction, test_pos)
+            if test_pos[0] < 0 or test_pos[1] < 0 or \
+               test_pos[0] >= self.thing.world.map_size[0] or \
+               test_pos[1] >= self.thing.world.map_size[1]:
+                raise GameError('would move outside map bounds')
+            pos_i = test_pos[0] * self.thing.world.map_size[1] + test_pos[1]
+            map_tile = self.thing.world.map_[pos_i]
+            if map_tile != '.':
+                raise GameError('would move into illegal terrain')
+
+
+class Thing:
+
+    def __init__(self, world, type_, position):
+        self.world = world
+        self.type_ = type_
+        self.position = position
+        self.task = Task(self, 'wait')
+
+    def task_wait(self):
+        pass
+
+    def task_move(self, direction):
+        move_pos(direction, self.position)
+
+    def decide_task(self):
+        if self.position[1] > 1:
+            self.set_task('move', 'LEFT')
+        elif self.position[1] < 3:
+            self.set_task('move', 'RIGHT')
+        else:
+            self.set_task('wait')
+
+    def set_task(self, task, *args, **kwargs):
+        self.task = Task(self, task, args, kwargs)
+        self.task.check()
+
+    def proceed(self, is_AI=True):
+        """Further the thing in its tasks.
+
+        Decrements .task.todo; if it thus falls to <= 0, enacts method whose
+        name is 'task_' + self.task.name and sets .task = None. If is_AI, calls
+        .decide_task to decide a self.task.
+        """
+        self.task.todo -= 1
+        if self.task.todo <= 0:
+            task = getattr(self, 'task_' + self.task.name)
+            task(*self.task.args, **self.task.kwargs)
+            self.task = None
+        if is_AI and self.task is None:
+            self.decide_task()
+
+
+class World:
+
+    def __init__(self):
+        self.turn = 0
+        self.map_size = (5, 5)
+        self.map_ = 'xxxxx' +\
+                    'x...x' +\
+                    'x.X.x' +\
+                    'x...x' +\
+                    'xxxxx'
+        self.things = [
+            Thing(self, 'human', [3, 3]),
+            Thing(self, 'monster', [1, 1])
+        ]
+        self.player_i = 0
+        self.player = self.things[self.player_i]