檢測敵人是否面臨玩家

Question

我正在製作一個遊戲，如果距離小於2且敵人面對玩家，則文本會顯示重新啓動選項。在更新中有一個if和else語句，它應該檢測敵人是在玩家後面還是在玩家面前。然而，當距離小於2時，前面的選項似乎被調用，無論球員是否面對NPC。

該腳本連接到敵人：

using UnityEngine; 
using System.Collections; 
using UnityEngine.UI; 

public class EnemyFollow : MonoBehaviour { 

Transform player; 
Transform enemy; 
public GameObject EnemyCaughtCam; 
public Text SheCaughtYou; 
public GameObject Restart; 

public float Speed = 3f; 
public float rotS = 3f; 
public float sT = 3f; 
NavMeshAgent nav; 
float timeTillOptionsMenu = 3.0f; 

// Use this for initialization 
void Awake() { 
    player = GameObject.FindGameObjectWithTag ("MainCamera").transform; 
    //enemy = GameObject.FindGameObjectWithTag ("Enemy").transform; 
    nav = GetComponent<NavMeshAgent>(); 
    EnemyCaughtCam.SetActive(false); 
    SheCaughtYou.text = ""; 
} 

// Update is called once per frame 
void Update() { 
    nav.SetDestination (player.position); 
    DistanceDeath(); 

    if (npcIsFacingPlayer (player)&& !playerIsFacingNpc(player)) 
     print ("Behind"); 
    else if (npcIsFacingPlayer (player)&& playerIsFacingNpc(player)) 
     print ("In Front"); 
     DistanceDeath(); 
} 

public void DistanceDeath(){ 

    float distance = Vector3.Distance(player.transform.position, 
     transform.position);    


    if (distance < 2){ 

     EnemyCaughtCam.SetActive(true); 
     SheCaughtYou.text = "SHE CAUGHT YOU!"; 

     timeTillOptionsMenu -= Time.deltaTime; 
     if(timeTillOptionsMenu < 0) 
     { 
      Restart.SetActive(true); 

     } 


    } 

} 

public bool npcIsFacingPlayer(Transform other) 
{ 
    Vector3 toOther = 
    other.position - transform.position; 
    return (Vector3.Dot(toOther, transform.forward) > 0); 
} 
public bool playerIsFacingNpc(Transform other) 
{ 
    Vector3 toOther = 
    transform.position - other.position; 
    return (Vector3.Dot(toOther, other.forward) > 0); 
} 

} 

Answer 1

首先，你缺少一些支架，第二有一個STRA DistanceDeath呼叫，這裏是如何在功能Update閱讀：

// Update is called once per frame 
void Update() { 
    nav.SetDestination (player.position); 

    /** what does the call do here? */ 
    DistanceDeath(); 

    if (npcIsFacingPlayer (player)&& !playerIsFacingNpc(player)) 
     print ("Behind"); 
    else if (npcIsFacingPlayer (player)&& playerIsFacingNpc(player)) 
     print ("In Front"); 

    /** are you missing brackets here? Distance Death is always called */ 
    DistanceDeath(); 
}