我有这个脚本：

using UnityEngine;

public class GapRangeAttribute : PropertyAttribute
{
    public float minRange;
    public float maxRange;
    public float sensitivity;

    public GapRangeAttribute(float minRange, float maxRange, float sensitivity)
    {
        this.minRange = minRange;
        this.maxRange = maxRange;
        this.sensitivity = sensitivity;
    }
}

还有这个

using UnityEditor;
using UnityEngine;

[CustomPropertyDrawer(typeof(GapRangeAttribute))]
public class GapRangeDrawer : PropertyDrawer
{
    float minRange;
    float maxRange;
    float sensitivity;

    public GapRangeDrawer(float minRange, float maxRange, float sensitivity)
    {
        this.minRange = minRange;
        this.maxRange = maxRange;
        this.sensitivity = sensitivity;
    }

    public override void OnGUI(Rect position, SerializedProperty property, GUIContent label)
    {
        if (property.propertyType == SerializedPropertyType.Float)
        {
            EditorGUI.BeginProperty(position, label, property);
            EditorGUI.Slider(position, property, minRange, maxRange, label);
            property.floatValue = RoundValue(property.floatValue);
            EditorGUI.EndProperty();
        }
        else
        {
            EditorGUI.LabelField(position, label.text, "Use [GapRangeDrawer] with float values only!");
        }
    }

    private float RoundValue(float value)
    {
        return Mathf.Round(value / sensitivity) * sensitivity;
    }
}

并在单声道脚本中使用它：

using UnityEditor;
using UnityEngine;

public class CubeSpawner : MonoBehaviour
{
    public GameObject cubePrefab;
    public LayerMask terrainLayer;
    [GapRange(0, 100, 0.1f)]
    public float gap = 0f;

并在单声道脚本中的某些地方使用差距变量。我在Visual Studio中没有任何错误，只是在编辑器中。
MissingMethodException：找不到类型GapRangeDrawer的默认构造函数