Random.Range

説明

Return a random float number between min [inclusive] and max [inclusive] (Read Only).

Note max is inclusive. Random.Range(0.0f, 1.0f) can return 1.0 as the value. The Random.Range distribution is uniform. Range is a Random Number Generator.

using UnityEngine;
using System.Collections;

public class ExampleClass : MonoBehaviour
{
    public GameObject prefab;

    // Instantiate the Prefab somewhere between -10.0 and 10.0 on the x-z plane
    void Start()
    {
        Vector3 position = new Vector3(Random.Range(-10.0f, 10.0f), 0, Random.Range(-10.0f, 10.0f));
        Instantiate(prefab, position, Quaternion.identity);
    }
}

説明

Return a random integer number between min [inclusive] and max [exclusive] (Read Only).

Note max is exclusive. Random.Range(0, 10) can return a value between 0 and 9. Return min if max equals min. The Random.Range distribution is uniform. Range is a Random Number Generator.

using UnityEngine;
using UnityEngine.SceneManagement;

public class ExampleClass : MonoBehaviour
{
    // Loads a random level from the level list

    void Start()
    {
        SceneManager.LoadScene(Random.Range(0, SceneManager.sceneCount));
    }
}