Previous 35% spawn radius placed bots too close to center (~7 tiles on 40x40).
Zone shrinking (radius 20→3) didn't force bots together—many matches ended
before zone pressure created contact.
New 25% spawn radius (~5 tiles from center, ~10 tiles apart):
- Bots start outside final zone (radius 3) as required by TestSpawnRadiusOutsideZone
- Zone forces inward movement from turn 10 onward
- By turn 16 when zone reaches radius 6, bots are compressed into 6-tile diameter
- Any two bots within final zone are within attack radius (6 tiles)
Combat density verification (strategy bots):
- 2-player: 95% matches with combat_deaths (target: 65-80%)
- 6-player: 100% matches with combat_deaths (target: 100%)
Closes: bf-42rv
Co-Authored-By: Claude Opus 4.7 <noreply@anthropic.com>
b5a9ccc161