From de49aa72249f2fded44e53831f5680d9a48d7f5b Mon Sep 17 00:00:00 2001
From: Jeremy Thurgood <firxen@gmail.com>
Date: Wed, 14 May 2014 23:00:12 +0200
Subject: [PATCH] Shift board locations.

---
 data/location_decks/test.yaml |  6 ++++-
 naja/actions.py               |  8 +++++++
 naja/gameboard.py             | 43 +++++++++++++++++++++++++++++++++++
 3 files changed, 56 insertions(+), 1 deletion(-)

diff --git a/data/location_decks/test.yaml b/data/location_decks/test.yaml
index e64c10d..b577ba3 100644
--- a/data/location_decks/test.yaml
+++ b/data/location_decks/test.yaml
@@ -39,4 +39,8 @@ cards:
     - *ACQUIRE-WIN-TOKEN
   - actions:
     - *GAIN-HEALTH-DEFAULT
-    - *TOGGLE-BITS-C
\ No newline at end of file
+    - *TOGGLE-BITS-C
+  - actions:
+    - action_class: 'ShiftLocations'
+      required_bits: [CYAN, MAGENTA]
+      data: {'direction': NORTH}
diff --git a/naja/actions.py b/naja/actions.py
index f62b463..9c4e8f3 100644
--- a/naja/actions.py
+++ b/naja/actions.py
@@ -96,3 +96,11 @@ class GainHealthAndClearBitsOrMSB(LocationAction):
         board.gain_health()
         if not self.check_and_clear_MSB(board.player):
             board.player.bits.clear_bits(location.bitwise_operand)
+
+
+class ShiftLocations(LocationAction):
+    # TODO: Direction parameter in TEXT.
+    TEXT = "Shift board locations."
+
+    def perform_action(self, board, location):
+        board.shift_locations(self.data['direction'])
diff --git a/naja/gameboard.py b/naja/gameboard.py
index dd0861e..7e8f273 100644
--- a/naja/gameboard.py
+++ b/naja/gameboard.py
@@ -104,6 +104,49 @@ class GameBoard(object):
         location = LocationCard.new_location(choice(self.locations).copy())
         self.board_locations[position] = location
 
+    def shift_locations(self, direction):
+        px, py = self.player.position
+        shifted_locations = {}
+        # TODO: Make this less horrible. Also test it.
+        if BITS[direction] == BITS.NORTH:
+            for y in range(5):
+                if y == py:
+                    continue
+                new_y = y - 1
+                if new_y == py:
+                    new_y -= 1
+                new_y %= 5
+                shifted_locations[(px, new_y)] = self.board_locations[(px, y)]
+        elif BITS[direction] == BITS.SOUTH:
+            for y in range(5):
+                if y == py:
+                    continue
+                new_y = y + 1
+                if new_y == py:
+                    new_y += 1
+                new_y %= 5
+                shifted_locations[(px, new_y)] = self.board_locations[(px, y)]
+        elif BITS[direction] == BITS.EAST:
+            for x in range(5):
+                if x == px:
+                    continue
+                new_x = x + 1
+                if new_x == px:
+                    new_x += 1
+                new_x %= 5
+                shifted_locations[(new_x, py)] = self.board_locations[(x, py)]
+        elif BITS[direction] == BITS.WEST:
+            for x in range(5):
+                if x == px:
+                    continue
+                new_x = x - 1
+                if new_x == px:
+                    new_x -= 1
+                new_x %= 5
+                shifted_locations[(new_x, py)] = self.board_locations[(x, py)]
+
+        self.board_locations.update(shifted_locations)
+
     def change_mode(self, new_mode):
         """Advance to the next mode"""
         if new_mode == self.player_mode:
-- 
2.34.1