grow_sapling.diff

diff --git a/bravo/plugins/build_hooks.py b/bravo/plugins/build_hooks.py
index 98e2bff..a6bec20 100644
--- a/bravo/plugins/build_hooks.py
+++ b/bravo/plugins/build_hooks.py
@@ -5,6 +5,7 @@ from bravo.blocks import blocks, items
 from bravo.entity import Chest, Sign
 from bravo.ibravo import IBuildHook
 from bravo.utilities import split_coords
+from bravo.terrain import NormalTree
 
 class Tile(object):
     """
@@ -166,7 +167,31 @@ class BuildSnow(object):
 
     before = tuple()
     after = ("build",)
+    
+class GrowSapling(object):
+    """
+    Grows saplings when placed.
+
+    You almost certainly want to enable this plugin.
+    """
+    
+    implements(IBuildHook)
+
+    @inlineCallbacks
+    def build_hook(self, factory, player, builddata):
+        block = yield factory.world.get_block((builddata.x, builddata.y, builddata.z))
+        
+        if block == blocks["sapling"].slot:
+            NormalTree(pos=(builddata.x, builddata.y, builddata.z))
+
+        returnValue((True, builddata))
+
+    name = "grow_sapling"
+
+    before = tuple()
+    after = ("build","build_snow")
 
 tile = Tile()
 build = Build()
 build_snow = BuildSnow()
+grow_sapling = GrowSapling()