Abstract Class

A runner hits the jungle checkpoint and the ancient pyramid glows green — one shared trigger, but a unique reward for every tier.

An abstract class like base_checkpoint sets the contract, wiring the race_checkpoint_device to a method that subclasses must override.

We declare the abstract OnPassed method, subscribe the device's CheckpointCompletedEvent to it, then let jungle_checkpoint provide the exact logic.

Reach for abstract classes when multiple devices share the same wiring but need their own unique reactions.

base_checkpoint := class<abstract>(creative_device):
    @editable
    Device : race_checkpoint_device = race_checkpoint_device{}
    abstract OnPassed(A: agent): void
    OnBegin<override>()<suspends>:void =
        Device.CheckpointCompletedEvent.Subscribe(OnPassed)
jungle_checkpoint := class(base_checkpoint):
    OnPassed<override>(A: agent): void =
        Print("Jungle tier cleared!")