Bevy spatial queries

When to use

Load this when a design needs line of sight, a volume overlap, a ground probe, or a mouse pick. Screen-to-2D-world mapping that does not hit a collider is a camera helper, not a physics query.

ECS shape

• Components own a probe radius or a facing marker. Positions come from GlobalTransform.
• Camera pick: Camera::viewport_to_world_2d with GlobalTransform maps a cursor to a 2D world point. That is a camera map, then a distance test against sprites. See bevy-camera-systems.
• Systems read transforms after movement. Chain the probe after the system that writes Transform when both run in the same schedule.

Probe choice