Lighting

world.light{
    { at = vec3(4, 65, -2), level = 12 },   -- 1 to 15 (15 by default), in the air where it shines
    { at = vec3(0, 70, 0) },
}

• Light drops one level per block, like block light. Solid blocks stop it.
• The light has no colour. For colour, put coloured blocks or a glowing screen under it.
• The server never sees this light. The world’s real light does not change.
• It needs clients 1.14 and later. Older clients ignore it. A pack that depends on it sets min_client: "1.14".
• A block change can erase the light near it. While the light moves, call world.light every tick or two.