add drawers support for wrench (also fix a missing constants issue)

wrench/drawers.lua

@@ -0,0 +1,45 @@
+if not minetest.get_modpath("drawers") then
+  return
+end
+
+local INT, STRING =
+	wrench.META_TYPE_INT,
+	wrench.META_TYPE_STRING
+
+-- assemble definitions for type 1,2 and 4
+for _, drawer_type in ipairs({1,2,4}) do
+
+  local def = {
+    lists = {"upgrades"},
+    metas = {},
+    after_place = drawers.spawn_visuals
+  }
+
+  for i=1,drawer_type do
+
+    local suffix
+    if drawer_type == 1 then
+      -- no suffix for base type
+      suffix = ""
+    else
+      -- index as suffix
+      suffix = i
+    end
+
+    def.metas["name" .. suffix] = STRING
+    def.metas["count" .. suffix] = INT
+    def.metas["max_count" .. suffix] = INT
+    def.metas["base_stack_max" .. suffix] = INT
+    def.metas["entity_infotext" .. suffix] = STRING
+    def.metas["stack_max_factor" .. suffix] = INT
+    def.metas["meta_itemstack" .. suffix] = INT
+    def.metas["itemstack_wear" .. suffix] = INT
+  end
+
+  wrench:register_node("drawers:wood" .. drawer_type, def)
+  wrench:register_node("drawers:acacia_wood" .. drawer_type, def)
+  wrench:register_node("drawers:aspen_wood" .. drawer_type, def)
+  wrench:register_node("drawers:junglewood" .. drawer_type, def)
+  wrench:register_node("drawers:pine_wood" .. drawer_type, def)
+
+end