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

public class AppleTree : MonoBehaviour {
    [Header("Set in Inspector")]
    // Prefab for instantiating apples
    public GameObject applePrefab;
    public GameObject GoldApplePrefab;
    public GameObject GreenApplePrefab;
    public float chanceToDropSpecial = 0.01f;


    // Speed at which the AppleTree moves
    public float speed = 1f;

    // Distance where AppleTree turns around
    public float leftAndRightEdge = 10f;

    // Chance that the AppleTree will change directions
    public float chanceToChangedirections = 0.1f;

    // Rate at which Apples will be instantiated
    public float secondsBetweenAppleDrops = 1f;

	// Use this for initialization
	void Start () {
        // Dropping apples every second
        Invoke("DropApple", 2f );
    }

    void DropApple() {
        GameObject apple = Instantiate<GameObject>(applePrefab);
        apple.transform.position = transform.position;
        Invoke("DropApple", secondsBetweenAppleDrops);

    }

    void DropGreenApple()
    {
        GameObject GreenApple = Instantiate<GameObject>(GreenApplePrefab);
        GreenApple.transform.position = transform.position;
        Invoke("DropApple", secondsBetweenAppleDrops);

    }

    void DropGoldApple()
    {
        GameObject GoldApple = Instantiate<GameObject>(GoldApplePrefab);
        GoldApple.transform.position = transform.position;
        Invoke("DropApple", secondsBetweenAppleDrops);

    }

    // Update is called once per frame
    void Update() {
        if (Random.value < chanceToDropSpecial)
        {
            DropGreenApple();
            DropGoldApple();
        }
        // Basic Movement
        Vector3 pos = transform.position;
        pos.x += speed * Time.deltaTime;
        transform.position = pos;

        // Changing Direction
        if (pos.x < -leftAndRightEdge) {
            speed = Mathf.Abs(speed); //Move right
        } else if (pos.x > leftAndRightEdge) {
            speed = -Mathf.Abs(speed); //Move left
        }
    }

    void FixedUpdate() {
        if (Random.value < chanceToChangedirections) {
            speed *= -1; // Change direction
        }
	}
}