I'm still working in base of the first web tutorial and I have a little question that I can't solve.
When I create a solid/static sprite like a wall I don' have any problem to do the collisions with other animate objects, but when I try to create a collision system between 2 animated objects and pick the option "solid" they lose their movements and other actions.
as far as i can tell is not possible to made 2 things collision with other without using this options
1- physics behaviour, have 2 objects with physics behavior
2- made a knock back system with platform behaviour...
take a look at the physics examples in C2