using System.Collections;
using System.Collections.Generic;
using UnityEngine;

public class AIUtils {
    public static BattleHero GetNearestHero(MonsterViewpoint monsterViewpoint,
            BattleParticipant owner) {
        int ownerPosition = GetMonsterPosition(monsterViewpoint, owner);

        int nearestHeroIndex = -1;
        int nearestDistance = int.MaxValue;
        for (int i = 0; i < monsterViewpoint.Heroes.Length; i++) {
            if (!monsterViewpoint.Heroes[i].IsAlive()) continue;
            int distance = System.Math.Abs(i - ownerPosition);
            if (distance < nearestDistance) {
                nearestHeroIndex = i;
                nearestDistance = distance;
            }
        }
        if (nearestHeroIndex == -1) return null;
        return monsterViewpoint.Heroes[nearestHeroIndex];
    }

    public static int GetMonsterPosition(MonsterViewpoint monsterViewpoint, BattleParticipant monster) {
        for (int i = 0; i < monsterViewpoint.Monsters.Length; i++) {
            if (monsterViewpoint.Monsters[i] == monster) return i;
        }
        return -1;
    }

    public static BattleHero GetHeroWithHighestHP(MonsterViewpoint monsterViewpoint) {
        int highestHPHeroIndex = -1;
        int highestHP = -1;
        for (int i = 0; i < monsterViewpoint.Heroes.Length; i++) {
            if (!monsterViewpoint.Heroes[i].IsAlive()) continue;
            int heroHP = monsterViewpoint.Heroes[i].GetHP();
            if (heroHP > highestHP) {
                highestHPHeroIndex = i;
                highestHP = heroHP;
            }
        }
        if (highestHPHeroIndex == -1) return null;
        return monsterViewpoint.Heroes[highestHPHeroIndex];
    }
}