Stay in the Dark

Bright light burns you.

The opposite of Stay in the Light.

How it works

• Once a second (every 20 ticks) the pack checks the light level at every player's feet.
• If it's 8 or higher, the player takes 2 damage (one heart).
• It's the combined light level, the same one mob spawning uses: the brighter of block light (torches, lava, glowstone) and sky light, with sky light dimmed by time of day and weather.
• The damage is generic, so armor reduces it.
• Players in creative and spectator mode are ignored.

Limitations

• Daytime outdoors is deadly: sky light is 15, so standing in the open costs a heart per second. Caves, covered unlit areas and nights are safe.
• Respawning in daylight hurts right away, since spawn points are usually outdoors. You have about 20 seconds to reach shade.

Configuration

Both values are in data/stay_in_the_dark/function/step.mcfunction:

• light:{light:{min:8}} is the threshold: damage starts at this light level.
• damage @s 2 is the damage per hit.
• schedule function stay_in_the_dark:step 20t is the interval.

Run /reload after editing.