Question

我想将我的脚本更改为2D c＃脚本。我知道AddExplosionForce不是UnityEngine.Rigidbody2D的成员，所以如何将其更改为2D脚本并且仍然具有从所有方向应用的相同力。（基本上做同样但在2D）谢谢！这是我的剧本：

#  pragma strict

var explosionStrength : float = 100;

 function OnCollisionEnter(_other: Collision) 
{
if (_other.collider.gameObject.name == "Bouncy object")
   _other.rigidbody.AddExplosionForce(explosionStrength, this.transform.position,5);
}

Answer 1

我所知道的并没有内置，但它实际上很容易实现。以下是使用扩展方法的示例：

using UnityEngine;

public static class Rigidbody2DExt {

    public static void AddExplosionForce(this Rigidbody2D rb, float explosionForce, Vector2 explosionPosition, float explosionRadius, float upwardsModifier = 0.0F, ForceMode2D mode = ForceMode2D.Force) {
        var explosionDir = rb.position - explosionPosition;
        var explosionDistance = explosionDir.magnitude;

        // Normalize without computing magnitude again
        if (upwardsModifier == 0)
            explosionDir /= explosionDistance;
        else {
            // From Rigidbody.AddExplosionForce doc:
            // If you pass a non-zero value for the upwardsModifier parameter, the direction
            // will be modified by subtracting that value from the Y component of the centre point.
            explosionDir.y += upwardsModifier;
            explosionDir.Normalize();
        }

        rb.AddForce(Mathf.Lerp(0, explosionForce, (1 - explosionDistance)) * explosionDir, mode);
    }
}

现在您可以像使用3D刚体AddExplosionForce一样使用它，例如使用您的代码：

public class Test : MonoBehaviour {
    public float explosionStrength  = 100;

    void OnCollisionEnter2D( Collision2D _other) 
    {
        if (_other.collider.gameObject.name == "Bouncy object")
            _other.rigidbody.AddExplosionForce(explosionStrength, this.transform.position,5);
    }
}

参见演示： https://dl.dropboxusercontent.com/u/16950335/Explosion/index.html

来源： https://dl.dropboxusercontent.com/u/16950335/Explosion/AddExplosionForce2D.zip

Answer 2

关于这个的答案很好，但是，它对我不起作用。那是在他使用的 Forcemode2D 中。据我所知，Forcemode2D.Force 仅适用于长时间执行的强制。但是，爆炸效果更像是，例如。一个跳跃。所以我只是将 Forcemode2D.Force 更改为 Forcemode2D.Impulse，现在它可以工作了^^

这是新代码

using UnityEngine;

public static class Rigidbody2DExt {

    public static void AddExplosionForce(this Rigidbody2D rb, float explosionForce, Vector2 explosionPosition, float explosionRadius, float upwardsModifier = 0.0F, ForceMode2D mode = ForceMode2D.Force) {
        var explosionDir = rb.position - explosionPosition;
        var explosionDistance = explosionDir.magnitude;

        // Normalize without computing magnitude again
        if (upwardsModifier == 0)
            explosionDir /= explosionDistance;
        else {
            // From Rigidbody.AddExplosionForce doc:
            // If you pass a non-zero value for the upwardsModifier parameter, the direction
            // will be modified by subtracting that value from the Y component of the centre point.
            explosionDir.y += upwardsModifier;
            explosionDir.Normalize();
        }

        rb.AddForce(Mathf.Lerp(0, explosionForce, (1 - explosionDistance)) * explosionDir, mode);
    }
}

无论如何谢谢你 o /

Unity：AddExplosionForce到2D

2 个答案: