optimise the client a bit

MultiClient.py

@@ -796,15 +796,10 @@ async def console_loop(ctx : Context):
         await snes_flush_writes(ctx)
 
 def get_item_name_from_id(code):
-    items = [k for k, i in Items.item_table.items() if type(i[3]) is int and i[3] == code]
-    return items[0] if items else 'Unknown item'
+    return Items.lookup_id_to_name.get(code, 'Unknown item')
 
 def get_location_name_from_address(address):
-    if type(address) is str:
-        return address
-
-    locs = [k for k, l in Regions.location_table.items() if type(l[0]) is int and l[0] == address]
-    return locs[0] if locs else 'Unknown location'
+    return Regions.lookup_id_to_name.get(address, 'Unknown location')
 
 async def track_locations(ctx : Context, roomid, roomdata):
     new_locations = []

Regions.py

@@ -615,3 +615,5 @@ location_table = {'Mushroom': (0x180013, 0x186338, False, 'in the woods'),
                   'Ice Palace - Prize': ([0x120A4, 0x53F5A, 0x53F5B, 0x180059, 0x180073, 0xC705], None, True, 'Ice Palace'),
                   'Misery Mire - Prize': ([0x120A2, 0x53F48, 0x53F49, 0x180057, 0x180075, 0xC703], None, True, 'Misery Mire'),
                   'Turtle Rock - Prize': ([0x120A7, 0x53F24, 0x53F25, 0x18005C, 0x180079, 0xC708], None, True, 'Turtle Rock')}
+
+lookup_id_to_name = {data[0] : name for name, data in location_table.items() if type(data[0]) == int}