Struct GameLoop

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pub struct GameLoop { /* private fields */ }
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impl GameLoop

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pub fn new(target_frame_time: Duration, max_frame_time: Duration) -> Self

Create a new GameLoop instance.

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pub fn new_with_fps(fps: u32, max_frame_time: Duration) -> Self

Create a new GameLoop instance specifying FPS instead of frame time for convenience.

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pub fn set_target_frame_time(&mut self, time: Duration)

Set the desired (minimum) time between application updates.

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pub fn set_fps(&mut self, fps: u32)

Set the desired (maximum) FPS. Overrides target_frame_time since they are inversions of each other.

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pub fn set_max_frame_time(&mut self, time: Duration)

Set the maximum time between application updates. The real time can still be longer.

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pub fn update(&mut self, elapsed: Duration) -> UpdateResult

Perform all calculations for an update.

You can do something like:

loop {
    // handling events, input or whatever
 
    let elapsed = instance.elapsed(); // using `std::time::Instance` to measure time between updates
    instance = Instance::now();
 
    let update_result = game_loop.update(elapsed).run(|update_result| {
        // your actual update logic
    });
 
    // rendering logic
}

Trait Implementations§

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impl Clone for GameLoop

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fn clone(&self) -> GameLoop

Returns a copy of the value. Read more
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fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl Debug for GameLoop

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fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter. Read more

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impl<T> Any for T
where T: 'static + ?Sized,

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fn type_id(&self) -> TypeId

Gets the TypeId of self. Read more
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impl<T> Borrow<T> for T
where T: ?Sized,

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fn borrow(&self) -> &T

Immutably borrows from an owned value. Read more
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impl<T> BorrowMut<T> for T
where T: ?Sized,

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fn borrow_mut(&mut self) -> &mut T

Mutably borrows from an owned value. Read more
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impl<T> CloneToUninit for T
where T: Clone,

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unsafe fn clone_to_uninit(&self, dest: *mut u8)

🔬This is a nightly-only experimental API. (clone_to_uninit)
Performs copy-assignment from self to dest. Read more
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impl<T> From<T> for T

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fn from(t: T) -> T

Returns the argument unchanged.

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impl<T, U> Into<U> for T
where U: From<T>,

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fn into(self) -> U

Calls U::from(self).

That is, this conversion is whatever the implementation of From<T> for U chooses to do.

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impl<T, U> TryFrom<U> for T
where U: Into<T>,

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type Error = Infallible

The type returned in the event of a conversion error.
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fn try_from(value: U) -> Result<T, <T as TryFrom<U>>::Error>

Performs the conversion.
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impl<T, U> TryInto<U> for T
where U: TryFrom<T>,

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type Error = <U as TryFrom<T>>::Error

The type returned in the event of a conversion error.
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fn try_into(self) -> Result<U, <U as TryFrom<T>>::Error>

Performs the conversion.