// prg6-12 顯示蘋果次數於ui

using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.SceneManagement;
using UnityEngine.UI;
using TMPro;

public class PlayerController : MonoBehaviour
{
    // Start is called before the first frame update
    public TextMeshProUGUI textMeshProUGUI;
    Rigidbody2D rigid2D;
    Animator animator;
    float jumpForce = 680.0f;
    float walkForce = 10.0f;
    float maxWalkSpeed = 2.0f;
    float threshold = 0.2f;

    GameObject director;

    GameObject Apple;
    GameObject Pig;
    int Apple_eats = 0;
    int Pig_eats = 0;

    void Start()
    {
        this.rigid2D = GetComponent<Rigidbody2D>();    
        this.animator = GetComponent<Animator>();
        Apple = GameObject.Find("Apple_text");
        Pig = GameObject.Find("Pig_text");
        director = GameObject.Find("GameDirector");
    }

    // Update is called once per frame
    void Update()
    {
        if (Input.GetKeyDown(KeyCode.Space) && this.rigid2D.velocity.y == 0) {
            this.animator.SetTrigger("JumpTrigger");
            this.rigid2D.AddForce(transform.up * this.jumpForce);
        }

         if (Input.GetMouseButtonDown(0) && this.rigid2D.velocity.y == 0) {
            this.animator.SetTrigger("JumpTrigger");
            this.rigid2D.AddForce(transform.up * this.jumpForce);
        }

        int key = 0;
        if(Input.GetKey(KeyCode.RightArrow)) key = 1;
        if(Input.GetKey(KeyCode.LeftArrow)) key = -1;

        if(Input.acceleration.x > this.threshold) key = 1;
        if(Input.acceleration.x < -this.threshold)  key = -1;

        float speedx = Mathf.Abs(this.rigid2D.velocity.x);

        if(speedx < this.maxWalkSpeed) {
            this.rigid2D.AddForce(transform.right * key * walkForce);
        }

        if(key != 0) {
            transform.localScale = new Vector3(key, 1, 1);
        }

        if(this.rigid2D.velocity.y == 0){
            this.animator.speed = speedx / 2.0f;
        }
        else {
            this.animator.speed = 1.0f; }

        if(transform.position.y < -10) {
            SceneManager.LoadScene("GameScene");
        }
    }

    void OnTriggerEnter2D(Collider2D other) {
        if (other.gameObject.name == "flag") {
            Debug.Log("flag!");
            SceneManager.LoadScene("ClearScene");
        }
        if (other.gameObject.tag == "Apple") {
            Debug.Log(other.gameObject);
            Destroy(other.gameObject);

            director.GetComponent<GameDirector>().IncreaseHp();
            Apple_eats +=1;
            Apple.GetComponent<TextMeshProUGUI>().text = "Apple : "+Apple_eats.ToString("D2");
        }

        if (other.gameObject.tag == "Pigs") {
            Debug.Log(other.gameObject);
            Destroy(other.gameObject);

            director.GetComponent<GameDirector>().DecreaseHp();
            Pig_eats +=1;
            Pig.GetComponent<TextMeshProUGUI>().text = "Pig : "+Pig_eats.ToString("D2");

        }
        
    }

    //void OnCollisonEnter2D(Collider2D coll) {  
    //    Debug.Log("Collision Detection!");
    //    print("FINISH!");
    //}
}