FloPinguin 23e05f0115 Fix nations always attacking nuked territory instead of waiting for the correct strategy 🤖 (#4422)
## Description:

Nations always rushed nuked (fallout) TerraNullius instead of
retaliating or attacking enemies. The bug needed two commits to compose:

**#3786** introduced `PlayerImpl.nearby()` (renamed from `neighbors()`)
and wired it into the early expansion gate in
`AiAttackBehavior.maybeAttack()` via a second disjunct:

```ts
const hasNonNukedTerraNullius =
  border.some((t) => !hasOwner(t) && !hasFallout(t)) ||  // already filtered
  playerNeighbors.some((n) => !n.isPlayer());             // via nearby()
```

The first disjunct correctly excludes fallout, but the second one went
through `nearby()`, whose direct-neighbor loop never filtered fallout
(unlike the `shoreReachableNeighbors()` sibling introduced in the same
commit). So a nation bordering directly-adjacent nuked TN reported it as
plain TerraNullius and set the gate true. The bug stayed **dormant**
because #3786 also introduced `hasLandBorderWithTerraNullius()` *with* a
fallout filter, so `sendAttack(terraNullius())` still rejected nuked TN
and the early `return` never fired.

**#3814** removed the fallout filter from
`hasLandBorderWithTerraNullius()` so the `nuked` strategy could capture
fallout tiles. That unblocked the land path of `sendAttack`: now the
early gate fired on nuked-only borders *and* `sendAttack` succeeded,
pre-empting every attack strategy (retaliate, bots, assist, ...) on
every difficulty.

Fix: filter nuked (fallout) unowned tiles in `nearby()`'s
direct-neighbor loop, making it consistent with
`shoreReachableNeighbors()`. The early gate now only fires for non-nuked
TerraNullius, and the `nuked` strategy still fires (and captures
territory) when the nation has nothing better to do, preserving the
behaviour #3814 intended.

Added `tests/AiAttackBehaviorNukedTerritory.test.ts` covering:

- `nearby()` excludes directly-adjacent nuked TerraNullius
- `maybeAttack` retaliates against an incoming attacker instead of nuked
TN
- the early gate is bypassed when only nuked TN borders the nation
- the `nuked` strategy still captures tiles when the nation is idle
(Impossible and Easy difficulties)
- `isUnitDisabled(MissileSilo)` short-circuits the `nuked` strategy

## Please complete the following:

- [X] I have added screenshots for all UI updates
- [X] I process any text displayed to the user through translateText()
and I've added it to the en.json file
- [X] I have added relevant tests to the test directory

## Please put your Discord username so you can be contacted if a bug or
regression is found:

FloPinguin
2026-06-27 08:50:04 -07:00
2025-06-22 08:14:08 -07:00
2026-05-31 15:09:08 +01:00
2026-03-23 13:40:21 -07:00
2026-04-29 12:49:19 -06:00
2026-01-21 10:00:55 -08:00
2026-05-31 15:09:08 +01:00
2026-05-31 15:09:08 +01:00

OpenFrontIO Logo

OpenFront.io is an online real-time strategy game focused on territorial control and alliance building. Players compete to expand their territory, build structures, and form strategic alliances in various maps based on real-world geography.

This is a fork/rewrite of WarFront.io. Credit to https://github.com/WarFrontIO.

CI Crowdin CLA assistant License: AGPL v3 Assets: CC BY-SA 4.0

License

OpenFront source code is licensed under the GNU Affero General Public License v3.0

Current copyright notices appear in:

  • Footer: "© OpenFront and Contributors"
  • Loading screen: "© OpenFront and Contributors"

Modified versions must preserve these notices in reasonably visible locations.

See the LICENSE for complete requirements.

For asset licensing, see LICENSE-ASSETS.
For license history, see LICENSING.md.

🌟 Features

  • Real-time Strategy Gameplay: Expand your territory and engage in strategic battles
  • Alliance System: Form alliances with other players for mutual defense
  • Multiple Maps: Play across various geographical regions including Europe, Asia, Africa, and more
  • Resource Management: Balance your expansion with defensive capabilities
  • Cross-platform: Play in any modern web browser

📋 Prerequisites

  • npm (v10.9.2 or higher)
  • A modern web browser (Chrome, Firefox, Edge, etc.)

🚀 Installation

  1. Clone the repository

    git clone https://github.com/openfrontio/OpenFrontIO.git
    cd OpenFrontIO
    
  2. Install dependencies

    npm run inst
    

    Do NOT use npm install nor npm i but instead use our npm run inst. It runs the safer npm ci --ignore-scripts to install dependencies exactly according to the versions in package-lock.json and doesn't run scripts. This can prevent being hit by a supply chain attack.

🎮 Running the Game

Development Mode

Run both the client and server in development mode with live reloading:

npm run dev

This will:

  • Start the webpack dev server for the client
  • Launch the game server with development settings
  • Open the game in your default browser (to disable this behavior, set SKIP_BROWSER_OPEN=true in your environment)

Client Only

To run just the client with hot reloading:

npm run start:client

Server Only

To run just the server with development settings:

npm run start:server-dev

Connecting to staging or production backends

Sometimes it's useful to connect to production servers when replaying a game, testing user profiles, purchases, or login flow.

To replay a production game, make sure you're on the same commit that the game you want to replay was executed on, you can find the gitCommit value via https://api.openfront.io/game/[gameId]. Unfinished games cannot be replayed on localhost.

To connect to staging api servers:

npm run dev:staging

To connect to production api servers:

npm run dev:prod

🛠️ Development Tools

  • Format code:

    npm run format
    
  • Lint code:

    npm run lint
    
  • Lint and fix code:

    npm run lint:fix
    
  • Testing

    npm test
    

🏗️ Project Structure

  • /src/client - Frontend game client
  • /src/core - Deterministic game simulation
  • /src/server - Backend game server
  • /resources - Static assets (images, maps, etc.)

🤝 Contributing

Contributions and translations are welcome! See CONTRIBUTING.md for the workflow, the approved-issue process, project governance, and translation info.

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