TurretAI

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

public class TurretAi : MonoBehaviour
{
    public enum AiStates { NEAREST, FURTHEST, WEAKEST, STRONGEST };
    public AiStates aiState = AiStates.NEAREST;
    TrackingSystem m_tracker;
    ShootingSystem m_shooter;
    RangeChecker m_range;

    void Start()
    {
        m_tracker = GetComponent<TrackingSystem>();
        m_shooter = GetComponent<ShootingSystem>();
        m_range = GetComponent<RangeChecker>();
    }

    private void Update()
    {
        //if missing any of these scripts don't run the code
        if (!m_tracker || !m_shooter || !m_range)
            return;
        switch (aiState)
        {
            //These are colons not semi-colons
            case AiStates.NEAREST:
                TargetNearest();
                break;
            case AiStates.FURTHEST:
                TargetFuthest();
                break;
            case AiStates.STRONGEST:
                TargetStrongest();
                break;
            case AiStates.WEAKEST:
                TargetWeakest();
                break;
        }
    }
    void TargetNearest()
    {
        List<GameObject> validTargets = m_range.GetValidTargets();
        GameObject curTarget = null;
        float closestDist = 0.0f;

        for (int i = 0; i < validTargets.Count; i++)
        {
            float dist = Vector3.Distance(transform.position, validTargets[i].transform.position);

            if (!curTarget || dist < closestDist)
            {
                curTarget = validTargets[i];
                closestDist = dist;
            }
        }
        m_tracker.SetTarget(curTarget);
        m_shooter.SetTarget(curTarget);
    }
    void TargetFuthest()
    {
        List<GameObject> validTargets = m_range.GetValidTargets();
        GameObject curTarget = null;
        float furthestDist = 0.0f;

        for (int i = 0; i < validTargets.Count; i++)
        {
            float dist = Vector3.Distance(transform.position, validTargets[i].transform.position);

            if (!curTarget || dist > furthestDist)
            {
                curTarget = validTargets[i];
                furthestDist = dist;
            }
        }
        m_tracker.SetTarget(curTarget);
        m_shooter.SetTarget(curTarget);
    }

    void TargetWeakest()
    {
        List<GameObject> validTargets = m_range.GetValidTargets();

        GameObject curTarget = null;
        int lowestHealth = 0;

        for (int i = 0; i < validTargets.Count; i++)
        {
            int maxHp = validTargets[i].GetComponent<Health>().maxHealth;

            if (!curTarget || maxHp < lowestHealth)
            {
                lowestHealth = maxHp;
                curTarget = validTargets[i];
            }
        }
        m_tracker.SetTarget(curTarget);
        m_shooter.SetTarget(curTarget);

    }
    void TargetStrongest()
    {
        List<GameObject> validTargets = m_range.GetValidTargets();

        GameObject curTarget = null;
        int highestHealth = 0;

        for (int i = 0; i < validTargets.Count; i++)
        {
            int maxHp = validTargets[i].GetComponent<Health>().maxHealth;

            if (!curTarget || maxHp > highestHealth)
            {
                highestHealth = maxHp;
                curTarget = validTargets[i];
            }
        }
        m_tracker.SetTarget(curTarget);
        m_shooter.SetTarget(curTarget);
    }
}