no-teleport

No Teleport

Github: https://github.com/Rutubet/no-teleport

No Teleport is a client-side Fabric mod for Minecraft 26.1.2 that prevents players from teleporting through Nether portals.

It makes Nether portal blocks behave like full solid blocks on the client, so walking into a portal feels like hitting an invisible wall while the portal still renders normally. It also performs a conservative Ender Pearl trajectory check before item use is sent to the server. If the predicted danger area may touch a Nether portal, the client cancels that Ender Pearl use before the server can spawn the pearl.

Features

• Client-side only; no server mod is required.
• Nether portals still render and animate normally.
• Players cannot normally walk into Nether portal blocks.
• Ender Pearl use is checked before the use packet is sent.
• Suspicious near-portal Ender Pearl throws are conservatively blocked.
• Normal Ender Pearl use away from Nether portals remains available.

Compatibility

| Requirement | Version |
| — | — |
| Minecraft | 26.1.2 |
| Fabric Loader | >=0.19.2 |
| Java | >=25 |
| Fabric API | Not required |

Installation

1. Install Fabric Loader for Minecraft 26.1.2.
2. Download or build no-teleport-0.1.0.jar.
3. Put the jar into the client’s mods folder.
4. Launch the game.

The built mod jar is located at:

build/libs/no-teleport-0.1.0.jar

Building From Source

Windows:

.\gradlew.bat clean build

Linux/macOS:

./gradlew clean build

The mod jar will be generated at:

build/libs/no-teleport-0.1.0.jar

Behavior

Portal blocking is implemented through client-side collision. The mod changes the collision shape for Blocks.NETHER_PORTAL to a full block, without changing the portal’s rendered shape.

Ender Pearl blocking happens before the client sends the item-use packet. The mod simulates a conservative pearl path and expands it into a wide danger area. If that area may touch any loaded Nether portal block, the item use is cancelled.

Limitations

• This is a client-side mod and cannot change server-authoritative logic.
• It does not rescue players who are already inside portal blocks.
• It does not roll back a player after the server has already decided to teleport them.
• Ender Pearl checking is conservative, so some near-portal throws that look safe may still be blocked.
• Servers with custom teleport logic, custom Ender Pearl physics, or unsynchronized portal blocks may bypass the assumptions this client-side guard relies on.

Development

Run the test suite:

.\gradlew.bat test

Build the release jar:

.\gradlew.bat clean build

License

MIT

No Teleport

No Teleport 是一个纯客户端 Fabric Mod，用于在 Minecraft 26.1.2 中阻止玩家通过地狱门传送。

它会在客户端把地狱门方块当作完整实体方块处理，让玩家像撞到空气墙一样无法正常走进地狱门。同时，它会在投掷末影珍珠前进行保守轨迹预测：如果预测出的危险轨迹范围可能接触到地狱门，客户端会取消这次末影珍珠使用，避免服务端生成末影珍珠实体。

功能

• 纯客户端 Mod，不需要服务端安装。
• 地狱门仍正常渲染和动画显示。
• 玩家无法通过普通移动走进地狱门。
• 末影珍珠投掷前会进行地狱门风险检测。
• 靠近地狱门的可疑末影珍珠投掷会被保守拦截。
• 远离地狱门的正常末影珍珠使用不受影响。

兼容性

| 要求 | 版本 |
| — | — |
| Minecraft | 26.1.2 |
| Fabric Loader | >=0.19.2 |
| Java | >=25 |
| Fabric API | 不需要 |

安装

1. 安装支持 Minecraft 26.1.2 的 Fabric Loader。
2. 下载或构建 no-teleport-0.1.0.jar。
3. 将 jar 放入客户端的 mods 文件夹。
4. 启动游戏。

构建产物位于：

build/libs/no-teleport-0.1.0.jar

从源码构建

Windows:

.\gradlew.bat clean build

Linux/macOS:

./gradlew clean build

构建完成后，Mod jar 会生成到：

build/libs/no-teleport-0.1.0.jar

行为说明

地狱门阻挡通过客户端碰撞实现。客户端会把 Blocks.NETHER_PORTAL 的碰撞形状改为整格方块，但不会改变地狱门的渲染形状。

末影珍珠阻挡发生在客户端发送使用物品包之前。Mod 会模拟一段保守的末影珍珠轨迹，并把轨迹扩展成较粗的危险范围。只要这个范围可能接触到已加载的地狱门方块，本次使用就会被取消。

限制

• 这是纯客户端 Mod，不能改变服务端权威逻辑。
• 不会救援已经进入地狱门方块内的玩家。
• 不会在服务端已经决定传送后强制回退玩家。
• 末影珍珠风险检测是保守的，靠近地狱门时可能误拦一些看似安全的投掷。
• 如果服务器使用自定义传送逻辑、自定义末影珍珠物理，或客户端未加载相关地狱门方块，Mod 不能保证完全覆盖这些情况。

开发

运行测试：

.\gradlew.bat test

构建发布 jar：

.\gradlew.bat clean build

许可证

MIT