Function willRollback

src/engine/lifecycle.ts:746–786

(engine: VisualNovelEngine)

}

export function willRollback (engine: VisualNovelEngine): Promise<unknown[]> {
	const promises = [];

	engine.debug.groupCollapsed ('Should Rollback Check passed, game will roll back.');

	try {
		// Check action by action if they will allow the game to revert
		for (const action of engine.actions ()) {
			promises.push (action.willRollback ().then (() => {
				engine.debug.debug (`OK ${action.id}`);
			}).catch ((e) => {
				engine.debug.debug (`FAIL ${action.id}\nReason: ${e}`);
				return Promise.reject (e);
			}));
		}

		// Check component by component if they will allow the game to revert
		for (const component of engine.components ()) {
			promises.push (component.willRollback ().then (() => {
				engine.debug.debug (`OK ${component.tag}`);
			}).catch ((e) => {
				engine.debug.debug (`FAIL ${component.tag}\nReason: ${e}`);
				return Promise.reject (e);
			}));
		}
	} catch (e) {
		console.error (e);
		const errorMessage = e instanceof Error ? e.message : String(e);
		FancyError.show ('engine:lifecycle:will_rollback_error', {
			errorMessage: errorMessage
		});
	}

	return Promise.all (promises).then ((...args) => {
		engine.debug.groupEnd ();
		return Promise.resolve (...args);
	}).catch ((e) => {
		engine.debug.groupEnd ();
		return Promise.reject (e);
	});
}