Files
OpenFrontIO/tests/client
Evan 117fa43947 Fix nuke preview showing teammate SAMs as threats (#4342)
## Problem

In the nuke trajectory preview, the SAM-intercept **"X"** marker was
drawn over **teammates'** SAMs — implying their SAM would shoot down
your missile. It shouldn't: like allies, a teammate's SAM never engages
your nuke. The bug only affected teammates; allies already worked.

## Cause

The preview built its threat set from `myPlayer.allies()` only — formal
alliances — and never considered teammates. That diverged from the sim
([`SAMLauncherExecution.ts`](src/core/execution/SAMLauncherExecution.ts#L118-L134)),
which skips any nuke whose owner it's `isFriendly()` with (**same team
OR allied**).

## Fix

`samThreatensNukePreview` now takes a teammate set and excludes
teammates **unconditionally**.

The subtlety: allies keep the existing *betrayal* exception — a strike
close enough to break the alliance makes that ally's SAM engage at
launch (`listNukeBreakAlliance`, the same function the sim uses).
Teammates get **no** such exception, because a strike can break an
alliance but never a team relationship. So even a player who is both a
teammate *and* a betrayed ally is correctly left off the threat set.

## Notes

- The sim has an "aftergame fun" exception where teammate SAMs *do*
target teammate nukes once there's a winner. The preview only appears
while aiming a buildable mid-game (no winner yet), so that case doesn't
apply here.

## Tests

Updated `samThreatensNukePreview` unit tests for the new signature and
added coverage for: teammate excluded, and teammate stays excluded even
when listed as betrayed. All 11 tests pass.

🤖 Generated with [Claude Code](https://claude.com/claude-code)

Co-authored-by: Claude Opus 4.8 (1M context) <noreply@anthropic.com>
2026-06-18 13:37:45 -07:00
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