using System.Collections;
using System.Collections.Generic;
using UnityEngine;
[RequireComponent (typeof(Rigidbody))]
public class RunningFood : Critter {

    public GameObject foodToInstantiate;
    List<GameObject> critterFlock = new List<GameObject>();
    int amountOfFoods = 9;
    RaycastHit collisionRay;
    public LayerMask critterLayer;
    float percentage;
    float idleTimer;
    float idleMax = 3f;
    float maxRayDistance = 3f;
    float moveSpeed = 2f;
    HelperFunctions helperFunctions;
    Transform targetPos;
    Rigidbody rigidBody;
    Vector3 oldPosition;

    public void Init()
    {
        rigidBody = GetComponent<Rigidbody>();
        targetPos = GameObject.FindGameObjectWithTag("Player").transform;
        state = CritterState.setDirection;
        helperFunctions = GameObject.Find("Main").GetComponent<HelperFunctions>();
    }

    public override void CritterUpdate(ref PlayerData _playerData)
    {
        switch(base.state)
        {
            case CritterState.setDirection:
                if (SetDirection())
                    state = CritterState.walk;
                break;

            case CritterState.walk:
                if (Walk())
                    state = CritterState.idle;
                break;

            case CritterState.idle:
                idleTimer += Time.deltaTime;
                if (idleTimer > idleMax)
                {
                    idleTimer = 0;
                    state = CritterState.setDirection;
                }
                break;
        }
    }

    bool SetDirection()
    {
        //ta en random forward
        float randomAngle = Random.Range(0, 359);
        transform.rotation = Quaternion.AngleAxis(randomAngle, new Vector3(0, 1, 0));

        if (Physics.Raycast(transform.position + new Vector3(0, 1, 0), transform.forward, out collisionRay, maxRayDistance))
        {
            if (!collisionRay.collider.isTrigger)
            {
                oldPosition = transform.position;
                return true;
            }
            else
                return false;
        }
        else
        {
            oldPosition = transform.position;
            return true;
        }
        //skjuta en ray i fårvard
        //if träffar, ta annan random fårward, skjut i fårvard
        //om ej träffar, spring 1 - 2 units i fårvard
    }

    bool Walk()
    {
        float tempDist = Vector3.Distance(oldPosition, transform.position);
        if (tempDist < maxRayDistance)
        {
            rigidBody.MovePosition(transform.position + transform.forward * Time.deltaTime * moveSpeed);
            return false;
        }
        else
            return true;
    }

    void FriendCheck()
    {

    }

    void Idle()
    {
        //Play idleAnimation
    }
}