Fix sculk vein rendering

Change-Id: I9e4880d68982b5a6de565861b5e969948d00f06f

overviewer_core/textures.py

@@ -13,7 +13,7 @@
 #    You should have received a copy of the GNU General Public License along
 #    with the Overviewer.  If not, see <http://www.gnu.org/licenses/>.
 
-from collections import OrderedDict
+from collections import OrderedDict, deque
 import sys
 import imp
 import os
@@ -4641,7 +4641,7 @@ def build_torch(active):
 
 # trapdoor
 # the trapdoor is looks like a sprite when opened, that's not good
-@material(blockid=[96,167,11332,11333,11334,11335,11336,12501,12502, 1198, 1207, 1218, 1223, 1230, 1231, 12658, 12659, 12660, 12661],
+@material(blockid=[96,167,11332,11333,11334,11335,11336,12501,12502, 1198, 1207, 1218, 1230, 1231, 12658, 12659, 12660, 12661],
           data=list(range(16)), transparent=True, nospawn=True)
 def trapdoor(self, blockid, data):
 
@@ -4677,7 +4677,6 @@ def trapdoor(self, blockid, data):
                    1198:BLOCKTEXTURE + "mangrove_trapdoor.png",
                    1207:BLOCKTEXTURE + "cherry_trapdoor.png",
                    1218:BLOCKTEXTURE + "bamboo_trapdoor.png",
-                   1223:BLOCKTEXTURE + "sculk_vein.png",
                    1230:BLOCKTEXTURE + "pink_petals.png",
                    1231:BLOCKTEXTURE + "frogspawn.png",
 
@@ -4712,6 +4711,33 @@ def trapdoor(self, blockid, data):
 
     return img
 
+
+@material(blockid=1223, data=list(range(0b11_1111 + 1)), transparent=True)
+def sculk_vein(self, _, data):
+    # data bits!
+    #   +------ south
+    #   |+----- north
+    #   || +---- west
+    #   || |+--- east
+    #   || ||+-- up
+    #   || |||+- down
+    # 0b00_0000
+
+    tex = self.load_image_texture(BLOCKTEXTURE + "sculk_vein.png")
+
+    south = tex if data & 0b10_0000 > 0 else None
+    north = tex if data & 0b01_0000 > 0 else None
+    west  = tex if data & 0b00_1000 > 0 else None
+    east  = tex if data & 0b00_0100 > 0 else None
+    up    = tex if data & 0b00_0010 > 0 else None
+    down  = tex if data & 0b00_0001 > 0 else None
+
+    faces = deque([north, east, south, west])
+    faces.rotate(self.rotation)
+
+    return self.build_full_block(up, faces[0], faces[1], faces[3], faces[2], down)
+
+
 # block with hidden silverfish (stone, cobblestone and stone brick)
 @material(blockid=97, data=list(range(3)), solid=True)
 def hidden_silverfish(self, blockid, data):

overviewer_core/world.py

@@ -1902,6 +1902,19 @@ def _get_block(self, palette_entry):
             if p['hatch'] == 2:
                 data = 2
 
+        elif key == 'minecraft:sculk_vein':
+            p = palette_entry['Properties']
+
+            if p['waterlogged'] == 'true':
+                block = 8
+            else:
+                data = 0
+                data |= 0b00_0001 if p['down'] == 'true' else 0
+                data |= 0b00_0010 if p['up'] == 'true' else 0
+                data |= 0b00_0100 if p['east'] == 'true' else 0
+                data |= 0b00_1000 if p['west'] == 'true' else 0
+                data |= 0b01_0000 if p['north'] == 'true' else 0
+                data |= 0b10_0000 if p['south'] == 'true' else 0
 
         return (block, data)