[Cargo Space] ([Discord][cargospace_discord]) by

[@johanhelsing][johanhelsing_mastodon] is a co-op 2d space game where you build

a ship and fly it through space looking for new parts, fighting pirates and the

environment.

The game uses its own homemade XPBD-based physics engine implemented directly

using [Bevy] systems and types. This month the implementation was fleshed out

adding important features such as collision layers, composite colliders, one-way

platforms and an efficient collision broadphase.

In other words, this means ship-to-ship collisions a are finally happening. This

was previously tricky, since ships are a combination of box colliders when

colliding with each other and bevy_ecs_tilemap colliders (when colliding with

the player).

One part of the broadphase implementation was split out into a new crate,

[bevy_sparse_grid_2d]. It provides a simple and convenient way to query for

entities that share one or more grid cells based on their axis aligned bounding

box (AABB).

Read more about Cargo Space's physics in [the long and detailed blog

post][cargospace_devlog_5].

[Cargo Space]: https://helsing.studio/cargospace

[cargospace_devlog_5]: https://johanhelsing.studio/posts/cargo-space-devlog-5

[cargospace_discord]: https://discord.gg/ye9UDNvqQD

[johanhelsing_mastodon]: https://mastodon.social/@johanhelsing

[bevy_sparse_grid_2d]: https://github.com/johanhelsing/bevy_sparse_grid_2d