// prg6-11 多個物件碰撞偵測（tag)
using System.Collections;
using System.Collections.Generic;
using UnityEngine;
using UnityEngine.SceneManagement;

public class PlayerController : MonoBehaviour
{
    Rigidbody2D rigi2D;
    Animator animator;
    float jumpForce = 680.0f;
    float walkForce = 30.0f;
    float maxWalkSpeed = 2.0f;
    float threshold = 0.2f;

    // Start is called before the first frame update
    void Start()
    {
        this.rigi2D = GetComponent<Rigidbody2D>();
        this.animator = GetComponent<Animator>();

    }

    // Update is called once per frame
    void Update()
    {
        //Jump
        //if(Input.GetMouseButtonDown(0) && this.rigi2D.velocity.y == 0) {
        //    this.animator.SetTrigger("JumpTrigger");
        //    this.rigi2D.AddForce(transform.up*this.jumpForce);
        //}

        if(Input.GetKeyDown(KeyCode.Space) && this.rigi2D.velocity.y ==0) {
            this.animator.SetTrigger("JumpTrigger");
            this.rigi2D.AddForce(transform.up * this.jumpForce);
        }
        // Left Right Move
        int key = 0;
        //手機傾斜移動
        //if(Input.acceleration.x > this.threshold) key = 1;
        //if(Input.acceleration.x < this.threshold) key = -1;

        
        //左右鍵切換面向
        if(Input.GetKey(KeyCode.RightArrow)) key = 1;
        if(Input.GetKey(KeyCode.LeftArrow)) key = -1;


        float speedx = Mathf.Abs(this.rigi2D.velocity.x);

        if(speedx < this.maxWalkSpeed) {
            this.rigi2D.AddForce(transform.right * key * this.walkForce);
        }

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

        //依照遊戲角色的速度改變動畫的速度
        if(this.rigi2D.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) {
        //Debug.Log("End");
        Debug.Log(gameObject.tag + " entered Trigger tagged " + other.gameObject.tag);
        if (other.gameObject.tag == "Apples")
          {  
            Debug.Log(other.gameObject.tag); 
            Destroy(other.gameObject); }

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

        if (other.gameObject.name == "flag")
           { Debug.Log("Finish !");  
             SceneManager.LoadScene("ClearScene");
           }
      
    }
}