dyn4j Forum

Thank you

I need to detect when one body leaves sensor body but ContactListener end() method not getting called when normal body stops overlapping with sensor body

I would like to detect collisions outside of the fixture body (imagine tower defense game use case).
One way is to add sensor body fixed on top of the regular visible body (tower), but I don't like this solution.
Is there a way to change detection radius overriding the fixtures rotation disc radius?

The root cause turns out to be that the body is rotating and the rendering didn't reflect that.

Yes I use the sample code.

The issue dissapears if I set MassType of the non-player bodies to INFINITY. Thus i am restricted with non-moving rectangular object.
Not sure if this issue only occurs with Rectangle, haven't tried creating Convex object using triangles.

Seems like fixture created by Geometry.createRectangle behaves like Geometry.createCircle. https://github.com/wnbittle/dyn4j/blob/master/src/org/dyn4j/geometry/Geometry.java#L589 There must be something else going on. It would be really helpful if you could put together a junit-test or a simple app...

How is the player body controlled? Can you supply the sizes and coordinates for the shapes when they are overlapping like this? William I am calling setLinearVelocity to control the player body. Go to this page and test directly: http://li1625-165.members.linode.com/game?z=2d9wnsDtjKWH28gdcoFYFsDPv...

The collision detection has some inaccuracy/error around the edges of Rectangular fixture. Please see picture, yellow box is controlled by player and it is moving toward blue spheres. As blue spheres slide toward the edge of the box, the error (penetration) increases. Yellow box is created by Geomet...

I am overriding setAsleep method which works fine.

I want to listen when World updates position of a body (due to physics). How to do this?
Thanks.