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doc/en/scripting/builtins/libworld.md

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+# *world* library
+
+```lua
+world.get_list() -> tables array {
+    -- world name
+    name: str,
+    -- world icon/preview (loading automatically)
+    icon: str
+}
+
+-- Returns current day time in range \[0.0-1.0\] 
+-- where 0.0 and 1.0 - midnight, 0.5 - noon.
+world.get_day_time() -> number
+
+-- Set day time value.
+world.set_day_time(time: number)
+
+-- Sets the specified day time cycle speed.
+world.set_day_time_speed(value: number)
+
+-- Returns the day time cycle speed.
+world.get_day_time_speed() -> number
+
+-- Returns total time passed in the world.
+world.get_total_time() -> number
+
+-- Returns world seed.
+world.get_seed() -> int
+
+-- Proves that this is the current time during the day 
+-- from 0.333(8 am) to 0.833(8 pm).
+world.is_day() -> boolean
+
+-- Checks that it is the current time at night
+-- from 0.833(8 pm) to 0.333(8 am).
+world.is_night() -> bool
+
+-- Checks the existence of a world by name.
+world.exists() -> bool
+```