如何在 AI 上检测范围内的特定对象？

Question

所以我正在从 Spectrum 复制游戏 "Snake Pit"。你可以作为你的玩家移动，还有多条 AI 控制的蛇。我正在想办法让蛇头在你身边时移动到你的位置。这是我要将其实现的代码。

public class SnakeController : MonoBehaviour {

public int maxSize;
public int currentSize;
public GameObject snakePrefab;
public Snake Head;
public Snake Tail;
public Vector2 nextPos;
public int NESW;
int Random;
float lineTimer;
int NESWTemp;

// Use this for initialization
void Start () {
    InvokeRepeating("TimerInvoke", 0, .3f);
    lineTimer = UnityEngine.Random.Range(0, 2.5f);
    currentSize = 1;
}

// Update is called once per frame
void Update () {
    lineTimer -= Time.deltaTime;
    if (lineTimer <= 0)
    {
        ComChangeD();
        lineTimer = UnityEngine.Random.Range(0, 2.5f);
    }
}

void TimerInvoke()
{
    Movement();
    if(currentSize >= maxSize)
    {
        TailFunction();
    }
    else
    {
        currentSize++;
    }
}

void Movement()
{
    GameObject temp;
    nextPos = Head.transform.position;

    if(nextPos.y > 3.22)
    {
        NESW = 2;
    }

    else if (nextPos.y < -4.42)
    {
        NESW = 0;
    }

    else if (nextPos.x < -8.2)
    {
        NESW = 1;
    }

    else if (nextPos.x > 7.7)
    {
        NESW = 3;
    }

    switch (NESW)
    {
        case 0:
            nextPos = new Vector2(nextPos.x, nextPos.y + 0.32f);
            break;
        case 1:
            nextPos = new Vector2(nextPos.x + 0.32f, nextPos.y);
            break;
        case 2:
            nextPos = new Vector2(nextPos.x, nextPos.y - 0.32f);
            break;
        case 3:
            nextPos = new Vector2(nextPos.x - 0.32f, nextPos.y);
            break;
    }

    temp = (GameObject)Instantiate(snakePrefab, nextPos, transform.rotation);
    Head.SetNext(temp.GetComponent<Snake>());
    Head = temp.GetComponent<Snake>();
    return;
}

void ComChangeD()
{
    NESWTemp = UnityEngine.Random.Range(0, 3);
    if (NESW == 0)
    {
        switch (NESWTemp)
        {
            case 0:
                NESW = 1;
                break;
            case 1:
                NESW = 2;
                break;
            case 2:
                NESW = 3;
                break;
        }
    }
    else if (NESW == 1)
    {
        switch (NESWTemp)
        {
            case 0:
                NESW = 0;
                break;
            case 1:
                NESW = 2;
                break;
            case 2:
                NESW = 3;
                break;
        }
    }
    else if (NESW == 2)
    {
        switch (NESWTemp)
        {
            case 0:
                NESW = 0;
                break;
            case 1:
                NESW = 1;
                break;
            case 2:
                NESW = 3;
                break;
        }
    }
    else if (NESW == 3)
    {
        switch (NESWTemp)
        {
            case 0:
                NESW = 0;
                break;
            case 1:
                NESW = 1;
                break;
            case 2:
                NESW = 2;
                break;
        }
    }
}

Answer 1

在蛇头下创建空游戏对象并将其命名为'DetectRange' 或类似名称。然后在检查器中将它的宽度和高度设置为您希望蛇跟随玩家的范围的宽度和高度。因此，如果玩家进入该范围，蛇将开始跟随。然后你可以将播放器对象的标签设置为 "Player" 或类似的东西（在检查器的顶部）。然后将脚本附加到 DetectRange 并在其中执行：

public GameObject playerObject; //Drag player gameobject in inspector
private float snakeSpeed = 1.0f;


void OnTriggerStay(Collider col)
{
    if(col.gameObject.Tag == "Player") //Check if player entered collider
    {
        playerObject.transform.position = Vector3.MoveTowards(playerObject.transform.position, col.gameObject.position, snakeSpeed);
    }
}

如何在 AI 上检测范围内的特定对象？

How to detect a specific object within range, on an AI?

c#

artificial-intelligence

unity5

detection