update doc/*/scripting/builtins/libplayer.md

doc/en/scripting/builtins/libplayer.md

@@ -142,3 +142,21 @@ player.get_entity(playerid: int) -> int
 ```
 
 Returns unique identifier of the player entity
+
+```lua
+player.get_all_in_radius(center: vec3, radius: number) -> table<int>
+```
+
+Returns an array of player IDs within a sphere with center `center` and radius `radius`.
+
+```lua
+player.get_all() -> table<int>
+```
+
+Returns an array of all active player IDs.
+
+```lua
+player.get_nearest(position: vec3) -> int
+```
+
+Returns the ID of the player closest to the specified position, or nil if there are no players.