Commerce: Economy & Public Services

Commerce 1.6.20 Update Notes
Changes since 1.6.17

For Minecraft Java 1.20.1, Forge 47.3.1–47.x and Java 17. Built with Forge 47.4.10. The server and every client must use the same Commerce version.

1. A/B regions

Newly paired A/B regions now use the heights of their two anchors as their vertical boundaries. Full build height is still available through the region's unlimited-Y setting, but is no longer the default for new regions. Existing full-height regions keep their saved boundaries. Delete an existing snapshot before changing a region's height setting.

Regions whose anchor endpoints touch face-to-face can be linked. Linked regions share management settings and a scheduled reset, while each region keeps its own snapshot.

2. Items entering and leaving a region

Administrators can separately prevent outside items from being brought into a region and prevent items obtained inside from being taken out. Both settings are off by default. Outside items are held temporarily and returned when the player leaves. If there is no room in the original slots or inventory, Commerce tries the player's bound delivery box; otherwise the items remain pending instead of being dropped.

These checks cover the regular inventory, equipment, offhand, Ender Chest, and readable Curios accessory and cosmetic slots. If Curios cannot be read, entry into a restricted region is refused. Items obtained inside carry a session marker. On exit or death, matching items are removed from Commerce cloud storage and the Ender Chest as well as the player's inventory. Expired marked items are also stopped when dropped or when a standard-slot mod container is opened.

This is not a blanket guarantee for every other mod's storage system. Hidden inventories and mods that strip item data may need their own compatibility work. Items placed in cloud storage before these markers existed cannot be traced retroactively.

3. External Linker and claimable certificates

The new External Linker is a slim pink terminal with a WWW sign. An administrator can place it and save up to four website entries per device. Players can view the entries and open a link in their own browser. Only HTTP and HTTPS addresses are accepted; server owners should configure trusted sites only.

Qualification Certificates and Property Certificates can now be issued without naming an owner first. They can be passed to another player, and the first holder to right-click one claims it through the server. Already claimed copies cannot be claimed again. For an unclaimed Qualification Certificate, its stated number of valid days now starts when it is first claimed, not when it was issued. This also applies to older certificates that are still unclaimed; existing claims and revocations are not reset.

4. Public displays and inflation advice

LED screens and advertising machines now have an administrator mode. An administrator can enable it with the tablet and publish without linking the display to another device. Ordinary players cannot edit or remove a display in this mode, and newly placed normal screens beside it will not merge into it. Displays left in normal mode keep their previous behavior.

When inflation risk is zero, the accounting screen no longer suggests unsupported price changes or treasury injections. Advice shown for an actual risk is based on the circulation figures and transactions Commerce has recorded.

5. Compatibility and testing

The network protocol has changed from 150 in 1.6.17 to 153 in 1.6.20. The 1.6.20 release passed a full build, 391 Forge server-side GameTests, checks for all 11 language files and the original item and block IDs.

The new model, graphical screens, real two-player use, Curios in the actual modpack, existing-world upgrades and large-region performance have not all been checked in a complete world copy. Stop the server and back up the entire world, including data/commerce_region_snapshots, along with mods, config and account or Bridge data before upgrading. Test on a copy first. If you need to roll back, restore the matching pre-upgrade world and data as well as the old JAR; changing only the JAR is not enough.

商业 Commerce 1.6.20 更新日志
对比版本：1.6.17 → 1.6.20

适用环境：Minecraft Java 1.20.1、Forge 47.3.1 至 47.x、Java 17。使用 Forge 47.4.10 构建。服务端和所有客户端必须安装相同的 Commerce 版本。

1. A/B 区域

新配对的 A/B 区域默认以两个区块器的高度为上下边界；需要覆盖所在维度完整建筑高度时，可在后台开启“无限 Y 轴”。旧版已保存的全高度区域保持原边界。要更改已有区域的高度设置，须先删除原快照。

两组区域的端点如果有方块面相邻，可以串接起来，共用后台设置和定时重置。每组区域仍分别保存快照，不会混在一起。

2. 区域物品出入

管理员可分别开启“区块外物资禁止带入”和“区块内物资禁止带出”，两项默认都关闭。禁止带入时，玩家原有物品会暂存，离开后返还；原栏位和背包装不下时，会尝试送到已绑定的商业快递箱。仍无空间的物品会继续等待返还，不会直接丢弃。

检查范围包括普通背包、装备、副手、末影箱，以及能够读取的 Curios 饰品和外观槽。Curios 读取失败时，玩家不能进入受限区域。区内获得的物品会带上本次区域会话标记；玩家离开或死亡时，背包、末影箱和商业云存储中的对应物品会被清理。已失效的标记物品被丢出，或放在使用标准物品槽的其他 Mod 容器中并再次打开时，也会受到检查。

这不保证覆盖所有第三方储物方式。完全隐藏库存、转移时清除物品数据的 Mod，可能需要单独适配；旧版已存入云存储且没有来源标记的物品，也无法事后判断来自哪个区域。

3. 外部链接器与待认领证书

新增外部链接器，外观是正面带 WWW 标识的粉色薄屏终端。管理员可放置设备，并为每台保存最多四条网站信息；玩家可查看并在自己的浏览器打开。只接受 HTTP 或 HTTPS 地址，服主应只填写可信网站。

资格证和不动产权证现在可以不填持有人先行发放、转交或上架。第一位持有者手持右键后，由服务器登记归属；已经认领的副本不能再次认领。待认领资格证的有效天数从首次绑定时开始计算，不再从签发时提前倒计时。旧版已发放但尚未认领的资格证也适用，已绑定和已吊销的证书不受影响。

4. 公共屏幕与通胀建议

LED 大屏和广告机新增“管理员模式”。管理员用平板开启后，无需连接其他设备就能发布内容；普通玩家不能编辑或拆除。后来放在旁边的普通大屏不会并入管理员屏幕。未开启管理员模式的设备保持原有用法。

通胀风险分为零时，记账器不再给出没有数据依据的调价或国库注资建议。确有风险时，建议仍以已经统计到的流通资金和收支记录为依据。

5. 版本与测试

网络协议从 1.6.17 的 150 升至 1.6.20 的 153，服务端与客户端不能混装。1.6.20 已通过完整构建、391 项 Forge 服务端自动测试、11 种语言文件检查，以及原有物品和方块 ID 检查。

新模型、图形界面、真实双人操作、目标整合包里的 Curios、旧世界升级和大范围区域性能，仍需在完整世界副本中验收。升级前先停服，备份整个世界（包括 data/commerce_region_snapshots）、mods、config，以及账号和 Bridge 数据，再在副本里测试。若要回退，旧 JAR 必须连同升级前同一时间点的世界和相关数据一起恢复，不能只换回旧 JAR。