game: 계략에서 도시 인구별 방어 계산식을 제곱근에서 로그로 변경

- (log(장수수 + 1, 2) - 1.25) * 0.04
- 8명까지는 기존 계산식과 큰 차이 없음

hwe/sammo/Command/General/che_화계.php

@@ -94,7 +94,7 @@ class che_화계 extends Command\GeneralCommand
 
         $prob = $maxGenScore / GameConst::$sabotageProbCoefByStat;
         $prob += $probCorrection;
-        $prob += (sqrt(count($destCityGeneralList)) - 1) * GameConst::$sabotageDefenceCoefByGeneralCnt;
+        $prob += (log(count($destCityGeneralList) + 1, 2) - 1.25) * GameConst::$sabotageDefenceCoefByGeneralCnt;
 
         $prob += $destCity['secu'] / $destCity['secu_max'] / 5; //최대 20%p
         $prob += $destCity['supply'] ? 0.1 : 0;