diff --git a/mcpipy/flood_fill_castel.py b/mcpipy/flood_fill_castel.py
new file mode 100644
index 0000000..fbff938
--- /dev/null
+++ b/mcpipy/flood_fill_castel.py
@@ -0,0 +1,94 @@
+from mine import *
+from mineturtle import *
+
+castle_2 = {
+    "fill":[ 
+          {"pos":(-230,0,0), "material":block.GRASS } 
+        , {"pos":(-230,0,-300), "material":block.GRASS } 
+        , {"pos":(0,0,-350), "material":block.WATER_STATIONARY } 
+        , {"pos":(100,5,-50), "material":block.END_BRICKS } 
+        , {"pos":(100,10,-50), "material":block.END_BRICKS } 
+        , {"pos":(100,15,-50), "material":block.END_BRICKS } 
+    ],
+    "walls": [ 
+          { "height":5, "material":block.END_BRICKS, "angle":0, "trans":(-240,0,-410), "length":160, "depth":0, "koch_flake":"FLFLFLFLFLF"}
+        , { "height":1, "material":block.END_BRICKS, "angle":0, "trans":(370,0,-510), "length":230, "depth":2, "koch_flake":"FLFRFLFLFLFRFLFRFLFRFLFLFLFRFLFRFLFRFLFLFLFRFLFRFLFRFLFLFLFRFLFRFLFRFLFLFLFRFLFRFLFRFLFLFLFRFLF"}
+        , { "height":16, "material":block.END_BRICKS, "angle":30, "trans":(-85,0,-165), "length":85, "depth":1, "koch_flake":"FLFRFLFLFLFRFLFLFLFRFLFLFLFRFLFLFLFRFLFLFLFRFLF"}
+        , { "height":16, "material":block.END_BRICKS, "angle":30, "trans":(110,0,-160), "length":20, "depth":0, "koch_flake":"FLFLFLFLFLF"} 
+        ]
+    }
+
+def DrawCastle(mc, fred, castle, scale=1.0):
+    pos = mc.player.getPos()
+    fred.goto(pos.x, pos.y, pos.z)
+    fred.angle(0.0)
+    fred_default = fred.save()
+
+    for wall in castle["walls"]:
+        fred.penblock(wall["material"])
+        for height in range(wall["height"]):
+            fred.penup()
+            fred.restore(fred_default)
+            fred.angle(0.0)
+            fred.left(wall["angle"])
+            fred.goto(
+                wall["trans"][0] * scale, 
+                pos.y + wall["trans"][1] + height,
+                wall["trans"][2] * scale
+                )
+            DrawKochFlake(fred, wall["length"] * scale, wall["depth"], wall["koch_flake"])
+
+    # must do the flood fill after the boundaries are drawn
+    for fill in castle["fill"]:
+        fill_pos = (fill["pos"][0] * scale, pos.y+fill["pos"][1], fill["pos"][2] * scale)
+        Fill(mc, fill_pos, fill["material"])
+
+    fred.goto(0.99, 0.99, 0.99)
+
+def DrawKochFlake(fred, length, depth, koch_flake):
+    fred.pendown()
+    for move in koch_flake:
+        if move == "F":
+            fred.go(length / (3 ** (depth - 1)))
+        elif move == "L":
+            fred.left(60)
+        elif move == "R":
+            fred.right(120)
+    fred.penup()
+
+def _get_nextPos(pos):
+    return [
+          (pos[0]-1, pos[1], pos[2])
+        , (pos[0]+1, pos[1], pos[2])
+        , (pos[0], pos[1], pos[2]-1)
+        , (pos[0], pos[1], pos[2]+1)
+    ]
+def _int_pos(pos):
+    return (int(pos[0]), int(pos[1]), int(pos[2]))
+
+def Fill(mc, pos, matrial, overflow_protection = 10000):
+    pos = _int_pos(pos)
+    initial_material = mc.getBlock(pos)
+    visited = []
+    stack = [pos]
+
+    while len(stack) > 0:
+        this_pos = stack.pop()
+        mc.setBlock(this_pos, matrial)
+        visited.append(pos)
+        next_pos_ar = _get_nextPos(this_pos)
+        for next_pos in next_pos_ar:
+            if next_pos in visited:
+                continue
+            next_pos_material = mc.getBlock(next_pos)
+            if mc.getBlock(next_pos) == initial_material:
+                stack.append(next_pos)
+        overflow_protection += -1
+        if overflow_protection <= 0:
+            break
+
+t = Turtle()
+t.pendelay(0)
+mc = Minecraft()
+
+DrawCastle(mc, t, castle_2, 0.15)