Struct VecEnv 

pub struct VecEnv<E: Env> { /* private fields */ }

Synchronous vectorized environment.

Wraps a Vec<E> of homogeneous environments. All environments must share the same obs_dim and action_dim; this is validated lazily on the first step call to avoid redundant checks.

Auto-reset

When step detects that environment i is done, it immediately calls reset() on it and places the resulting observation in the corresponding slot of VecStepResult::obs.

Example

use oxicuda_rl::env::env::LinearQuadraticEnv;
use oxicuda_rl::env::vectorized::VecEnv;

let envs: Vec<_> = (0..4).map(|_| LinearQuadraticEnv::new(3, 50)).collect();
let mut ve = VecEnv::new(envs);
let obs = ve.reset_all().unwrap();
assert_eq!(obs.len(), 4 * 3);

Implementations

impl<E: Env> VecEnv<E>

pub fn new(envs: Vec<E>) -> Self

Create a new VecEnv from a non-empty vector of environments.

Panics

Does not panic; returns an instance even with an empty envs slice (though subsequent calls will fail with RlError::DimensionMismatch).

pub fn n_envs(&self) -> usize

Number of parallel environments.

pub fn reset_all(&mut self) -> RlResult<Vec<f32>>

Reset all environments and return flattened observations.

Returns a Vec<f32> of length n_envs × obs_dim.

Errors

Propagates any RlError from individual reset() calls.

pub fn step(&mut self, actions: &[f32]) -> RlResult<VecStepResult>

Step all environments simultaneously.

actions must have length n_envs × action_dim; the slice is split into per-environment chunks before dispatch.

Errors

• RlError::DimensionMismatch — actions.len() is not a multiple of n_envs, or a chunk length does not match the environment’s action_dim.
• Any error propagated from individual step() or reset() calls.

pub fn envs(&self) -> &[E]

Immutable access to the underlying environment slice.

pub fn envs_mut(&mut self) -> &mut [E]

Mutable access to the underlying environment slice.

Trait Implementations

impl<E: Debug + Env> Debug for VecEnv<E>

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

Formats the value using the given formatter.