* `intensity` sets the intensity of the shadows from 0 (no shadows, default) to 1 (blackness)
* `get_lighting()`: returns the current state of lighting for the player.
* Result is a table with the same fields as `light_definition` in `set_lighting`.
+* `respawn()`: Respawns the player using the same mechanism as the death screen,
+ including calling on_respawnplayer callbacks.
`PcgRandom`
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