adventuretest/mods/skills/register_skills.lua

-- REGISTER THE SKILLS
skills.register_skill(SKILL_WOOD, { desc = 'Wood', max_level = 10, level_exp = 3, level = 1 })
skills.register_skill(SKILL_STONE, { desc = 'Stone', max_level = 10, level_exp = 5, level = 1 })
skills.register_skill(SKILL_METAL, { desc = 'Metals', max_level = 20, level_exp = 9, level = 4 })
skills.register_skill(SKILL_CRYSTAL, { desc = 'Crystals', max_level = 20, level_exp = 10, level = 8 })

skills.register_skill(SKILL_SMELTING, { desc = 'Smelting', max_level = 50, level_exp = 5, level = 1 })
skills.register_skill(SKILL_CRAFTING, { desc = 'Crafting', max_level = 50, level_exp = 5, level = 1 })

skills.register_skill(SKILL_ARROW, { desc = 'Bow and Arrow', max_level=10, level_exp = 10, level = 10 })
skills.register_skill(SKILL_MAGIC, { desc = 'Magic', max_level=15, level_exp = 10, level =3 })