Commit graph

3 commits

Author SHA1 Message Date
Liam Gallagher
64b0f19a65 Implement SystemParam for WorldId (#7741)
# Objective

Fixes #7736

## Solution

Implement the `SystemParam` trait for `WorldId`

## Changelog

- `WorldId` can now be taken as a system parameter and will return the id of the world the system is running in
2023-02-19 03:26:13 +00:00
2ne1ugly
0e9f80e00b Implement SparseSetIndex for WorldId (#7125)
# Objective

- Fixes #7124

## Solution

- Add Hash Derive on `WorldId`
- Add `SparseSetIndex` impl
2023-01-09 21:43:27 +00:00
Daniel McNab
5ba2b9adcf Unique WorldId (#2827)
# Objective

Fixes these issues:
- `WorldId`s currently aren't necessarily unique
    - I want to guarantee that they're unique to safeguard my librarified version of https://github.com/bevyengine/bevy/discussions/2805
    - There probably hasn't been a collision yet, but they could technically collide
- `SystemId` isn't used for anything
  - It's no longer used now that `Locals` are stored within the `System`.
- `bevy_ecs` depends on rand

## Solution

- Instead of randomly generating `WorldId`s, just use an incrementing atomic counter, panicing on overflow.
- Remove `SystemId` 
    - We do need to allow Locals for exclusive systems at some point, but exclusive systems couldn't access their own `SystemId` anyway.
- Now that these don't depend on rand, move it to a dev-dependency

## Todo

Determine if `WorldId` should be `u32` based instead
2021-09-30 20:54:47 +00:00