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Context

Struct Context 

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pub struct Context {
    pub globals: Vec<Value>,
    pub visit_counts: HashMap<DefinitionId, u32>,
    pub turn_counts: HashMap<DefinitionId, u32>,
    pub turn_index: u32,
    pub rng_seed: i32,
    pub previous_random: i32,
}
Expand description

Shared game state that lives above individual flows.

Holds globals, visit/turn tracking, and RNG state. This is the natural serialization boundary for save/load (deferred).

Multiple FlowInstances can share a single Context (matching inklecate’s semantics where flow writes are immediately visible to other flows), or each flow can hold its own cloned Context if the consumer wants fork/branch/rollback semantics. The runtime’s step functions take &mut Context (or any &mut impl ContextAccess) without prescribing where it lives.

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§globals: Vec<Value>§visit_counts: HashMap<DefinitionId, u32>§turn_counts: HashMap<DefinitionId, u32>§turn_index: u32§rng_seed: i32§previous_random: i32

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impl Context

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pub fn global(&self, idx: u32) -> &Value

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pub fn set_global(&mut self, idx: u32, value: Value)

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pub fn visit_count(&self, id: DefinitionId) -> u32

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pub fn increment_visit(&mut self, id: DefinitionId)

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pub fn turn_count(&self, id: DefinitionId) -> Option<u32>

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pub fn set_turn_count(&mut self, id: DefinitionId, turn: u32)

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pub fn turn_index(&self) -> u32

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pub fn increment_turn_index(&mut self)

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pub fn rng_seed(&self) -> i32

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pub fn set_rng_seed(&mut self, seed: i32)

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pub fn previous_random(&self) -> i32

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pub fn set_previous_random(&mut self, val: i32)

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pub fn next_random<R: StoryRng>(seed: i32) -> i32

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pub fn random_sequence<R: StoryRng>(seed: i32, count: usize) -> Vec<i32>

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impl Clone for Context

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fn clone(&self) -> Context

Returns a duplicate of the value. Read more
1.0.0 (const: unstable) · Source§

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source. Read more
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impl ContextAccess for Context

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fn global(&self, idx: u32) -> &Value

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fn set_global(&mut self, idx: u32, value: Value)

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fn visit_count(&self, id: DefinitionId) -> u32

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fn increment_visit(&mut self, id: DefinitionId)

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fn turn_count(&self, id: DefinitionId) -> Option<u32>

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fn set_turn_count(&mut self, id: DefinitionId, turn: u32)

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fn turn_index(&self) -> u32

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fn increment_turn_index(&mut self)

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fn rng_seed(&self) -> i32

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fn set_rng_seed(&mut self, seed: i32)

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fn previous_random(&self) -> i32

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fn set_previous_random(&mut self, val: i32)

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fn next_random<R: StoryRng>(&self, seed: i32) -> i32

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fn random_sequence<R: StoryRng>(&self, seed: i32, count: usize) -> Vec<i32>

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impl Debug for Context

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

Formats the value using the given formatter. Read more

Auto Trait Implementations§

Blanket Implementations§

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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> ToOwned for T
where T: Clone,

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type Owned = T

The resulting type after obtaining ownership.
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fn to_owned(&self) -> T

Creates owned data from borrowed data, usually by cloning. Read more
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fn clone_into(&self, target: &mut T)

Uses borrowed data to replace owned data, usually by cloning. Read more
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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.