Changing Objects at Certain Coordinates

You can do this using Intersections. This are the steps:
1) For the Hanging hat add a Drag-Move behavior.
2) On top of the character's head add a transparent element.
3) Add the other hat in the right position and make it not visible on execute.
4) Now add the following intersections between the hanging hat and the transparent element: one intersection with Hide behavior for the hanging hat;

Hey Alin,

I got lost at step 4. I've tried multiple different attempts at creating the right intersection, but nothing's working. Can you please create a sample app video to walk me through the steps? Thanks for your help.

russellshaffer

When you click the Intersection button, the yellow cross in the bottom left corner of Design mode, you'll see the window for setting up intersections.

For this effect, you'll be creating two different intersection behaviors. For both of them, Element 1 will be the hanging hat, and Element 2 will be the transparent element (or the character) with which the hat should intersect. The behavior should be to hide the hanging hat.

Then add another intersection by clicking the green plus sign in the intersection window. This intersection will have the same elements for Element 1 and Element 2. The behavior this time will be to show the hat that is placed on the character's head.

This means that when the hanging hat is moved over the character's hat, it should disappear and show the correctly-placed hat.

Does this work on your side? If not, I'll post a quick video.

Here's a link to a quick video of the process:
https://www.dropbox.com/s/7wsujk8jlle0ri9/Hat%20Intersection.mov

Inna,

Thank you very much for the instructions and video. They both made it crystal clear for me on how to make this interaction happen with what I'm working on. And now I can get it to work perfectly!

russellshaffer

I'm so glad! This is an effect that people have asked about for a wide variety of activities, so after I made the video in response to your question we decided to add it to our user guide as well. So thank you! :)