# HG changeset patch
# User Simon Cross <hodgestar@gmail.com>
# Date 1252088237 0
# Node ID 3c80f49d7d7411e24f53511cb5426507bdb77b01
# Parent  c5ec3ff32d1168a9d6ab25e20cf5f6e030cee3e2
Don't allow buildings and fences to be built on top of chickens.

diff -r c5ec3ff32d11 -r 3c80f49d7d74 gamelib/gameboard.py
--- a/gamelib/gameboard.py	Fri Sep 04 18:09:37 2009 +0000
+++ b/gamelib/gameboard.py	Fri Sep 04 18:17:17 2009 +0000
@@ -413,6 +413,9 @@
             cost = constants.BUY_PRICE_FENCE
         else:
             cost = constants.REPAIR_PRICE_FENCE
+        if any((chicken.pos.x, chicken.pos.y) == tile_pos for chicken in self.chickens):
+            return
+
         if self.cash < cost:
             print "You can't afford a fence."
             return
@@ -437,6 +440,8 @@
         building = building_cls(tile_pos)
         if self.cash < building.buy_price():
             return
+        if any(building.covers((chicken.pos.x, chicken.pos.y)) for chicken in self.chickens):
+            return
         if building.place(self.tv):
             self.add_cash(-building.buy_price())
             self.add_building(building)