77 lines
3.2 KiB
Markdown
77 lines
3.2 KiB
Markdown
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#unity/日常积累
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## 描述
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排序图层中的渲染器顺序。
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您可以将 GameObject 分组到 [SpriteRenderer](https://docs.unity.cn/cn/2019.4/ScriptReference/SpriteRenderer.html) 组件中的层中。这称为 [SortingLayer](https://docs.unity.cn/cn/2019.4/ScriptReference/SortingLayer.html)。 排序顺序决定每个 GameObject 对于每个排序图层中渲染器的优先级。 提供的数字越小，GameObject 显示的距离越远。数字越大，GameObject 越靠近摄像机。这在创建 2D 卷轴游戏时非常有效，因为您可能需要某些 GameObject 位于同一层上，但某些部分显示在其他部分前方。例如，对云进行分层处理，使其显示在天空前方。
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**注意**：该值必须介于 -32768 与 32767 之间。
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``` cs
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//Attach a script like this to a Sprite GameObject (Create>2D Object>Sprite). Assign a Sprite to it in the Sprite field.
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//Repeat the first step for another two Sprites and make them overlap each other slightly. This shows how the order number changes the view of the Sprites.
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using UnityEngine;
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public class MyScript : MonoBehaviour
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{
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public int MyOrder;
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public string MyName;
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}
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```
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``` cs
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//Create a folder named “Editor” (Right click in your Assets folder, Create>Folder)
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//Put this script in the folder.
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//This script adds fields to the Inspector of your GameObjects with the MyScript script attached. Edit the fields to change the layer and order number each Sprite belongs to.
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using UnityEngine;
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using UnityEditor;
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// Custom Editor using SerializedProperties.
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[CustomEditor(typeof(MyScript))]
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public class MeshSortingOrderExample : Editor
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{
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SerializedProperty m_Name;
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SerializedProperty m_Order;
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private SpriteRenderer rend;
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void OnEnable()
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{
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// Fetch the properties from the MyScript script and set up the SerializedProperties.
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m_Name = serializedObject.FindProperty("MyName");
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m_Order = serializedObject.FindProperty("MyOrder");
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}
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void CheckRenderer()
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{
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//Check that the GameObject you select in the hierarchy has a SpriteRenderer component
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if (Selection.activeGameObject.GetComponent<SpriteRenderer>())
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{
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//Fetch the SpriteRenderer from the selected GameObject
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rend = Selection.activeGameObject.GetComponent<SpriteRenderer>();
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//Change the sorting layer to the name you specify in the TextField
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//Changes to Default if the name you enter doesn't exist
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rend.sortingLayerName = m_Name.stringValue;
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//Change the order (or priority) of the layer
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rend.sortingOrder = m_Order.intValue;
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}
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}
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public override void OnInspectorGUI()
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{
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// Update the serializedProperty - always do this in the beginning of OnInspectorGUI.
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serializedObject.Update();
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//Create fields for each SerializedProperty
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EditorGUILayout.PropertyField(m_Name, new GUIContent("Name"));
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EditorGUILayout.PropertyField(m_Order, new GUIContent("Order"));
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//Update the name and order of the Renderer properties
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CheckRenderer();
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// Apply changes to the serializedProperty - always do this in the end of OnInspectorGUI.
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serializedObject.ApplyModifiedProperties();
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}
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}
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```
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