Struct bevy_ecs::system::SystemState[][src]

pub struct SystemState<Param: SystemParam> { /* fields omitted */ }
Expand description

Holds on to persistent state required to drive SystemParam for a System.

Implementations

Retrieve the SystemParam values. This can only be called when all parameters are read-only.

Retrieve the mutable SystemParam values.

Applies all state queued up for SystemParam values. For example, this will apply commands queued up by a Commands parameter to the given World. This function should be called manually after the values returned by SystemState::get and SystemState::get_mut are finished being used.

Retrieve the SystemParam values. This will not update archetypes automatically.

Safety

This call might access any of the input parameters in a way that violates Rust’s mutability rules. Make sure the data access is safe in the context of global World access. The passed-in World must be the World the SystemState was created with.

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