Class PreFlag

Return value for PreListener handlers — controls whether the interaction is resolved this step and in future steps.

• ACCEPT — resolve the interaction (default if handler returns null)
• IGNORE — suppress the interaction permanently until the next BEGIN
• ACCEPT_ONCE — accept this step only, then revert to the previous flag
• IGNORE_ONCE — ignore this step only, then revert to the previous flag

Use IGNORE/ACCEPT for stateful decisions (e.g., one-way platforms). Use *_ONCE variants for single-step overrides.

Converted from nape-compiled.js lines 2504–2591.