重写地面物品shader 和 摆放工具

unity/Assets/Editor/GroundClipTool.cs

@@ -0,0 +1,103 @@
+using UnityEngine;
+using UnityEditor;
+
+/// <summary>
+/// 地面裁剪工具 - 给Sprite应用带地面裁剪的Shader
+/// </summary>
+public class GroundClipTool : Editor
+{
+    [MenuItem("Tools/Shader/应用地面裁剪Shader")]
+    public static void ApplyGroundClipShader()
+    {
+        if (Selection.gameObjects.Length == 0)
+        {
+            EditorUtility.DisplayDialog("提示", "请先选择物体", "确定");
+            return;
+        }
+
+        // 加载Shader
+        Shader shader = Shader.Find("Custom/SpriteWithGroundClip");
+        if (shader == null)
+        {
+            EditorUtility.DisplayDialog("错误", "找不到Shader: Custom/SpriteWithGroundClip\n请检查Shader文件是否存在", "确定");
+            return;
+        }
+
+        int count = 0;
+        foreach (GameObject go in Selection.gameObjects)
+        {
+            SpriteRenderer sr = go.GetComponentInChildren<SpriteRenderer>();
+            if (sr == null)
+            {
+                Debug.LogWarning($"跳过 {go.name} - 没有SpriteRenderer");
+                continue;
+            }
+
+            // 创建Material
+            Material mat = new Material(shader);
+            mat.name = $"{go.name}_GroundClipMat";
+            
+            // 设置默认值
+            mat.SetFloat("_GroundHeight", 0f);
+            mat.SetFloat("_EnableClip", 1f);
+            mat.SetFloat("_ClipSoftness", 0.05f);
+            mat.SetColor("_Color", Color.white);
+
+            // 应用Material
+            sr.material = mat;
+
+            // 保存Material为Asset
+            string path = $"Assets/Materials/{mat.name}.mat";
+            if (!System.IO.Directory.Exists("Assets/Materials"))
+            {
+                System.IO.Directory.CreateDirectory("Assets/Materials");
+            }
+            
+            AssetDatabase.CreateAsset(mat, path);
+            
+            EditorUtility.SetDirty(go);
+            count++;
+            Debug.Log($"✓ 已应用地面裁剪Shader到 {go.name}");
+        }
+
+        AssetDatabase.SaveAssets();
+        AssetDatabase.Refresh();
+
+        if (count > 0)
+        {
+            EditorUtility.DisplayDialog("完成", $"已给 {count} 个物体应用地面裁剪Shader\n\n请在Inspector中调整Ground Height参数", "确定");
+        }
+    }
+
+    [MenuItem("Tools/Shader/设置地面高度（批量）")]
+    public static void SetGroundHeightBatch()
+    {
+        string input = EditorInputDialog.Show("设置地面高度", "请输入地面Y坐标:", "0");
+        
+        if (input == null) return;
+        if (!float.TryParse(input, out float groundHeight))
+        {
+            EditorUtility.DisplayDialog("错误", "请输入有效的数字", "确定");
+            return;
+        }
+
+        int count = 0;
+        foreach (GameObject go in Selection.gameObjects)
+        {
+            SpriteRenderer sr = go.GetComponentInChildren<SpriteRenderer>();
+            if (sr == null || sr.material == null) continue;
+
+            if (sr.material.shader.name == "Custom/SpriteWithGroundClip")
+            {
+                sr.material.SetFloat("_GroundHeight", groundHeight);
+                EditorUtility.SetDirty(go);
+                count++;
+            }
+        }
+
+        if (count > 0)
+        {
+            EditorUtility.DisplayDialog("完成", $"已设置 {count} 个物体的地面高度为 {groundHeight}", "确定");
+        }
+    }
+}

unity/Assets/Editor/GroundClipTool.cs.meta

@@ -0,0 +1,11 @@
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