Make bushes just decorative (override collision)

Now collision works just like if it was regular leaves/needles node

init.lua

@@ -31,6 +31,10 @@ local node_box_bushy_leaves = {
 		{ -4/16,-12/16,  0/16,  4/16, 12/16,  0/16 },
 	},
 }
+local node_box_one_node = {
+	type = "fixed",
+	fixed = { -0.5, -0.5, -0.5, 0.5, 0.5, 0.5 },
+}
 
 local get_node_box = function(node_name, node_def)
 	local node_box
@@ -39,6 +43,7 @@ local get_node_box = function(node_name, node_def)
 		string.match(node_name, "needles")
 	) then
 		node_box = node_box_bushy_leaves
+		collision_box = node_box_one_node
 	end
 	return node_box
 end
@@ -52,6 +57,7 @@ local add_bushy_leaves = function()
 				{
 					drawtype = "nodebox",
 					node_box = node_box,
+					collision_box = collision_box,
 				}
 			)
 		end