Unity检测左/右/上/下

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英文:

Unity detect left/right/up/down

问题

I am implementing my code on an object and the player's hand is the origin to detect if it is in the direction of right/left/up/down.

So far the code is working to detect all 4 axes but there is a problem.
If the direction is left/right, it prints both "Left" and "Up," similarly "Right" and "Up." Can it be just "Left" or "Right" and not print the y-axis along with it?

How do I fix this?

  1. public GameObject playersHand;
  2. private Transform targetOrigin;
  3. private Vector2 targetPos;
  4. private Vector2 mypos;
  6. void Start()
  7. {
  8.     targetOrigin = this.gameObject.transform;
  9. }
  11. void Update()
  12. {
  13.     mypos = playersHand.transform.position;
  14.     targetPos = targetOrigin.position;
  16.     if (targetOrigin.position.x < mypos.x && changed(mypos.y, targetPos.y))
  17.     {
  18.         print("Right");
  19.     }
  20.     else if (changed(mypos.y, targetPos.y) && targetOrigin.position.x > mypos.x)
  21.     {
  22.         print("Left");
  23.     }
  25.     if (targetOrigin.position.y < mypos.y && changed(mypos.x, targetPos.x))
  26.     {
  27.         print("Up");
  28.     }
  29.     else if (changed(mypos.x, targetPos.x) && targetOrigin.position.y > mypos.y)
  30.     {
  31.         print("Down");
  32.     }
  33. }
  35. bool changed(float a, float b)
  36. {
  37.     return (int)a == (int)b;
  38. }

请注意，我已经根据您的要求将代码翻译成中文，不包括代码部分。

英文:

I am implementing my code on an object and the player's hand is the origin to detect if it is in the direction of right/left/up/down.

So far the code is working to detect all 4 axis but there is a problem.
If the direction is left/right, it prints both "Left" and "Up", similarly "Right" and "Up". Can it be just "Left" or "Right" and not print the y axis along with it?

How do I fix this?

  1. public GameObject playersHand;
  2. private Transform targetOrigin;
  3. private Vector2 targetPos;
  4. private Vector2 mypos;
  6. void Start()
  7. {
  8.     targetOrigin = this.gameObject.transform;
  9. }
  11. void Update()
  12. {
  13.     mypos = playersHand.transform.position;
  14.     targetPos = targetOrigin.position;
  16.     if (targetOrigin.position.x &lt; mypos.x &amp;&amp; changed(mypos.y, targetPos.y))
  17.     {
  18.         print (&quot;Right&quot;);
  19.     }
  20.     else if (changed(mypos.y, targetPos.y))
  21.     {
  22.         print (&quot;Left&quot;);
  23.     }
  25.     if (targetOrigin.position.y &lt; mypos.y &amp;&amp; changed(mypos.x, targetPos.x))
  26.     {
  27.         print (&quot;Up&quot;);
  28.     }
  29.     else if (changed(mypos.x, targetPos.x))
  30.     {
  31.         print (&quot;Down&quot;);
  32.     }
  33. }
  35. bool changed(float a, float b)
  36. {
  37.     if ((int)a == (int)b)
  38.     {
  39.         return true;
  40.     }
  41.     else
  42.     {
  43.         return false;
  44.     }
  45. }

答案1

得分: 0

我认为问题出在逻辑上。
你需要检查位置是否在水平方向。
应该可以这样做：

  1. if (targetOrigin.position.x < mypos.x && Mathf.Abs(mypos.x - targetPos.x) > Mathf.Abs(mypos.y - targetPos.y))
  2. {
  3.     print("右");
  4. }
  5. else if (Mathf.Abs(mypos.x - targetPos.x) > Mathf.Abs(mypos.y - targetPos.y))
  6. {
  7.     print("左");
  8. }
  10. if (targetOrigin.position.y < mypos.y && Mathf.Abs(mypos.y - targetPos.y) > Mathf.Abs(mypos.x - targetPos.x))
  11. {
  12.     print("上");
  13. }
  14. else if (Mathf.Abs(mypos.y - targetPos.y) > Mathf.Abs(mypos.x - targetPos.x))
  15. {
  16.     print("下");
  17. }
英文:

I think the problem is logic.
you need to check if the position is in the horizontal direction.
that should work:

  1. if (targetOrigin.position.x &lt; mypos.x &amp;&amp; Mathf.Abs(mypos.x - targetPos.x) &gt; Mathf.Abs(mypos.y - targetPos.y))
  2. {
  3.     print (&quot;Right&quot;);
  4. }
  5. else if (Mathf.Abs(mypos.x - targetPos.x) &gt; Mathf.Abs(mypos.y - targetPos.y))
  6. {
  7.     print (&quot;Left&quot;);
  8. }
  10. if (targetOrigin.position.y &lt; mypos.y &amp;&amp; Mathf.Abs(mypos.y - targetPos.y) &gt; Mathf.Abs(mypos.x - targetPos.x))
  11. {
  12.     print (&quot;Up&quot;);
  13. }
  14. else if (Mathf.Abs(mypos.y - targetPos.y) &gt; Mathf.Abs(mypos.x - targetPos.x))
  15. {
  16.     print (&quot;Down&quot;);
  17. }

huangapple
  • 本文由 发表于 2023年5月10日 16:46:45
  • 转载请务必保留本文链接：https://go.coder-hub.com/76216506.html
  • c#
  • unity-game-engine
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