Tasks and Event Handling

Tasks are subroutines (functions) that you write that get called by Panda every frame or every specified amount of time. Event handlers are subroutines that you write that get called by Panda when certain special events occur. Together, these two mechanisms enable you to update your Panda world between rendering steps.

• Tasks
  • The Task Function
  • Task Return Values
  • The Do-Later Task
  • The Task Object
  • The Task Manager
  • Task timing
  • Examples
• Task Chains
  • Defining task chains
  • Using task chains
• Event Handlers
  • Defining a class that can Handle Events
  • Event Handling Functions
  • Sending Custom Events
  • A Note on Object Management
  • Coroutine Event Handlers
• Coroutines
  • Awaitables
  • Experimental feature
• Main Loop
• Threading
  • Multi-threaded Render Pipeline
  • Asynchronous Operations
  • Task Chains
  • Threading
  • File I/O
  • Compiling Panda3D with threading support
  • Debugging Threading Bugs