EllipseShapeData?

[chengenzhao]

Hi:

We tried to define an Ellipse shape as HitBox shape
but the BoundingShape is sealed
so is it possible for adding a new shape which is Ellipse Shape

Thanks

[AlmasB]

It is possible to implement, but the underlying check is still done based on bounding boxes (even if the shape is a circle).

This is different for PhysicsComponent based entities, for which a more precise algorithm is used based on the actual shape. Is your use case based on entities that use PhysicsComponent?

[chengenzhao]

Yes, it depends on physics component
use physics component to determine the collision
for now we use Circle and Rectangle to detect the collision

[AlmasB]

The physics engine is box2d, which does not have an ellipse shape. Here's a possible workaround: https://stackoverflow.com/questions/10032756/how-to-create-ellipse-shapes-in-box2d

BoundingShape.polygon() might be useful for that