feat(*): Add wood

wood.py

@@ -0,0 +1,28 @@
+import helpers
+import hay
+
+# Trees are a better way to get wood than bushes. They give 5 wood each. Like bushes, they can be planted on grass or soil.
+
+# Trees like to have some space and planting them right next to each other will slow down their growth. The growing time is doubled for each tree that is on a tile directly to the north, east, west or south of it. So if you plant trees on every tile, they will take 2*2*2*2 = 16 times longer to grow.
+
+def till_and_plant():
+    if get_ground_type() != Grounds.Grassland:
+        till()
+    if get_entity_type() == Entities.Tree or get_entity_type() == Entities.Bush:
+        helpers.harvest_if_possible()
+        plant(Entities.Tree)
+    else:
+        helpers.harvest_if_possible()
+        plant(Entities.Tree)
+
+def harvest_wood():
+    for x in range(get_world_size()):
+        for y in range(get_world_size()):
+            if helpers.is_even(get_pos_x()) and helpers.is_even(get_pos_y()):
+                till_and_plant()
+            elif helpers.is_odd(get_pos_x()) and helpers.is_odd(get_pos_y()):
+                till_and_plant()
+            else:
+                hay.till_and_plant()
+            move(North)
+        move(East)