Transform.position

描述

世界空间中的变换位置。

游戏代码可以访问 position 成员。可以通过设置该值来为 GameObject 设置动画。下面的示例通过更新 position 来使附加的球体反弹。反弹将慢慢结束。position 也可用于确定变换在 3D 空间中的位置。

using UnityEngine;

// Use Transform.position to bounce a sphere.
// The sphere and a quad are colored using materials.

public class ExampleScript : MonoBehaviour
{
    Vector3 velocity     = new Vector3(0.0f, 1.0f, 0.0f);
    float floorHeight    = 0.0f;
    float sleepThreshold = 0.05f;
    float gravity        = -9.8f;

    void Start()
    {
        transform.position = new Vector3(0.0f, 1.5f, 0.0f);
    }

    void FixedUpdate()
    {
        if (velocity.magnitude > sleepThreshold || transform.position.y > floorHeight)
        {
            velocity += new Vector3(0.0f, gravity * Time.fixedDeltaTime, 0.0f);
        }

        transform.position += velocity * Time.fixedDeltaTime;
        if (transform.position.y <= floorHeight)
        {
            transform.position = new Vector3(0.0f, floorHeight, 0.0f);
            velocity.y = -velocity.y;
        }
    }
}