Start a number of tree actions. As the node tree is drawn, the action's hook will be called whenever a relevant place is reached in the tree.
To stop a running action, call the action's stop method. Most tree actions will do it automatically as soon as their job is finished.
If the action is already running, the previous run will be aborted. The action can only run once at a time.
Actions to spawn.
See Implementation
Start a number of tree actions. As the node tree is drawn, the action's hook will be called whenever a relevant place is reached in the tree.
To stop a running action, call the action's stop method. Most tree actions will do it automatically as soon as their job is finished.
If the action is already running, the previous run will be aborted. The action can only run once at a time.