DATABASE / STRUCTURES

Structures Database

6 structures with costs, build times, and upgrade characteristics. Most building costs scale with quantity.

✦ Cost Scaling

Cost formula min(1M, 2^n × 125k) means first 4 City/Port/Factory cost 125k → 250k → 500k → 1M, then capped.

Ports and Factories share the same counter (PortBuildableGroup), so build order affects both prices.

名称	成本 / 公式	HP	伤害	建造	升级	作用 / 备注
港口 Port	125,000 min(1,000,000, 2^n × 125,000)，n = 已有港口/工厂数	—	—	50t	✓ 可升级	海上枢纽：贸易船、运输船与战舰的生成基地。等级越高，贸易船生成率与收益越高可被夺取，被占领后归新主
导弹井 Missile Silo	1,000,000 固定 1,000,000	—	—	100t	✓ 可升级	发射核弹的基础设施。升级提升装填速度 AI 核弹会避开 SAM 覆盖区
防御工事 Defense Post	50,000 min(250,000, (n+1) × 50,000)	—	—	50t	—	陆地防御塔：周围 30 tiles 内显著加强防御。防御区 mag ×5，speed ×3 范围 30 tiles
SAM 防空发射器 SAM Launcher	1,500,000 min(3,000,000, (n+1) × 1,500,000)	—	—	300t	✓ 可升级	拦截原子弹与氢弹的防空设施。冷却 90 ticks 射程随等级 70 → 150 tiles 不能拦截 MIRV
城市 City	125,000 min(1,000,000, 2^n × 125,000)	—	—	20t	✓ 可升级	提升人口上限并参与火车贸易。每级 +250,000 部队上限即使无港口也可建造（v24）是火车站点
工厂 Factory	125,000 min(1,000,000, 2^n × 125,000)（与港口共享 n）	—	—	20t	✓ 可升级	生成火车，搭配铁路与城市形成贸易网。火车生成率 (factories+10) × 15 tick 可建造铁路环路

Upgrade Tiers (4 levels)

City — Each level +250,000 troop cap; high-level cities with Factory significantly boost train revenue.
Port — Higher level = better trade ship spawn rate and cap revenue (v24 balance for 150 global cap).
SAM Launcher — Range from default 70 up to ~150 tiles, formula 150 − 480/(level+5).
Missile Silo — Upgrades reduce nuke reload time; AI avoids SAM-covered targets.
Factory — Improves train spawn rate and railway throughput.