Create MotionComposer (notes)

[MarkOates]

🖥 Display Client

Messages

• [x] clear all actors
• [x] add actor2d (with all its params)
• [x] toggle playback
• [x] set playhead position

🎮 Control Client

Messages

• [ ] add elements
• [ ] remove elements
• [ ] set element properties and tracks
• [ ] modify element params
• [ ] add keyframes
• [ ] sort elements

[MarkOates]

Theoretical example of JSON object of the actor:

"actors": [
  {
    "type": "Actor2D"
    "id": 12
    "params": [
       {
          "name": "opacity",
          "keyframes": [
             {
                "time": 0.5,
                "value": 2.0,
                "interpolator": "linear" 
             }
          ]
       }
    ]
  }

[MarkOates]

To create a new message, you would need to create a few supporting classes. Note cg is an alias for the component_generator program from Blast.

If your new class was "AddActor2D":

cg AllegroFlare/MotionComposer/Messages/AddActor2D derived
cg AllegroFlare/JSONLoaders/AllegroFlare/MotionComposer/Messages/AddActor2D json_loader
cg AllegroFlare/Testing/Comparison/AllegroFlare/MotionComposer/Messages/AddActor2D comparison

For each of these classes you would implement their logic. This includes logic for converting to and from JSON, as well as an operator== so that tests can be built.

Also, you would need to add a few new entries into the system:

• You need to include your class to be processed as one of the recognized messages here in MessageProcessor.
• You may want to add a new builder for the message to the MessageFactory.
• You would need to handle the message in your program. Here is where the message is handled in motion_edit.