HotMetals = { items = { "copper-plate", "iron-plate", "steel-plate", }, craftingCategories = { "smelting" }, skipTechUnlocksFor = {} } if settings.startup["hot-metals-plastic"].value then table.insert(HotMetals.items, "plastic-bar") if not mods["space-age"] then -- Space age uses other crafting categories table.insert(HotMetals.craftingCategories, "chemistry") end end require("compatibility.data")