Unity（三十五）：Tile Palette添加绘制画笔

效果

创建、选择画笔

脚本

• Editor

using UnityEditor;
using UnityEditor.Tilemaps;
using UnityEngine;

// [CustomEditor(typeof(GridBrush))] // 在默认画笔上添加脚本
[CustomEditor(typeof(CustomBrush))] // 在新创建的画笔上添加脚本
public class CreateCustomBrushEditor : GridBrushEditor
{
  private string _brushName;

  protected override void OnEnable()
  {
    base.OnEnable();
    _brushName = (target as CustomBrush)?.name;
  }

  // 重绘Scene视图
  public override void OnPaintSceneGUI(GridLayout gridLayout, GameObject brushTarget, BoundsInt position, GridBrushBase.Tool tool, bool executing)
  {
    base.OnPaintSceneGUI(gridLayout, brushTarget, position, tool, executing);
    string msg = $"{_brushName}\n{gridLayout.name}-{brushTarget.name}\n{position}";
    GUIStyle style = new GUIStyle();
    style.normal.textColor = Color.red;
    style.fontSize = 20;
    // Handles 场景视图中的自定义 3D GUI 控件和绘制操作
    Handles.Label(position.position, msg, style);
  }

  [MenuItem("Assets/Create/创建自定义画笔", false, 0)]
  public static void CreateCustomBrushFile()
  {
    // public static string SaveFilePanelInProject (string 保存框标题, string 文件名, string 后缀名, string 保存提示);
    string path = EditorUtility.SaveFilePanelInProject("保存自定义画笔", "New Brush", "asset", "请选择保存画笔的路径！");
    if (path != "") AssetDatabase.CreateAsset(ScriptableObject.CreateInstance<CustomBrush>(), path);
  }
}

• 画笔

using UnityEditor.Tilemaps;
using UnityEngine;

/**
 * CustomGridBrushAttribute  用于将该类定义为网格画笔，以及使其在调色板窗口中可用
 * CustomGridBrushAttribute (bool hideAssetInstances, bool hideDefaultInstance, bool defaultBrush, string defaultName)
 *   --> hideAssetInstances   在该瓦片面板窗口中隐藏该画笔的所有资源实例
 *   --> hideDefaultInstance    在该 Tile Palette 设置后，该摄像机渲染另一个通道（在不透明效果之后，但在图像效果之前）
 *   --> defaultBrush     如果设置为 true，则画笔将替换在调色板窗口中作为默认画笔的 Unity 内置画笔
 *   --> defaultName        此画笔的默认实例的名称
 */
// 创建自定义画笔 - 拓展画笔
[CustomGridBrushAttribute(false, true, false, "自定义画笔")]
public class CustomBrush : GridBrush
{
  public string name; // 画笔名称（可以添加其他参数用于修改画笔绘制的形式）

  /**
   * 重写画笔绘制方法
   * public void Paint (GridLayout gridLayout, GameObject brushTarget, Vector3Int position);
   *   --> gridLayout     用于布局的 Grid
   *   --> brushTarget      绘制操作的目标。默认为当前选择的 GameObject
   *   --> position     要绘制数据的单元格的坐标
   */
  public override void Paint(GridLayout gridLayout, GameObject brushTarget, Vector3Int position)
  {
    base.Paint(gridLayout, brushTarget, position);
    #if
    // 修改绘制形式
    // position.x += 2;
    // base.Paint(gridLayout, brushTarget, position);
    #endif
    // 打印绘制区域的信息
    Debug.Log($"{gridLayout.name}-{brushTarget.name} ---> {position}");
  }
}