Uses

This plugin makes it simple to create ray casting sources, such as a transform (first person, third person shooter), or screenspace coordinates (mouse picking). Rays are shot from these sources every frame using a bevy system, and the intersections are stored in the ray casting source's component.

• Only meshes that you mark with a component will be checked for intersections.
• You can define which ray casting source(s) should interact with which mesh(es) by marking grouped sources and targets with the same type.
• This plugin also provides some functionality to compute the intersection of rays with primitive shapes.
• Acceleration is provided using Bevy's AABBs and visibility culling.

Alternatives

For a more full featured and performant option, consider using bevy_rapier. Note that rapier is a full physics engine that can also do raycasting; by contrast, this crate prioritizes simplicity and ergonomics.

Bevy Version Support

I intend to track the main branch of Bevy. PRs supporting this are welcome!

| bevy | bevymodraycast | | ---- | ---------------- | | 0.10 | 0.8 | | 0.9 | 0.7 | | 0.8 | 0.6 | | 0.7 | 0.4, 0.5 | | 0.6 | 0.3 | | 0.5 | 0.2 | | 0.4 | 0.1 |

Examples

Mouse picking using a ray cast built using screen space coordinates:

shell cargo run --example mouse_picking

Mouse picking using a ray cast built using screen space coordinates, for 2D meshes:

shell cargo run --example mouse_picking_2d

Ray casting from a camera using ray casts from the camera entity's GlobalTransform:

shell cargo run --example minimal

Manually compute raycast against primitive shape, and check for line-of-sight visibility shell cargo run --example ray_intersection_over_mesh

Optimization Mouse picking over many meshes using AABBs:

shell cargo run --example bounding_volume

Optimization Mouse picking over complicated mesh using simplified mesh for the raycasting:

shell cargo run --example simplified_mesh