Calculate Banner.previewPrefabPath

src/main/java/emu/grasscutter/game/gacha/GachaBanner.java

@@ -13,7 +13,7 @@ public class GachaBanner {
     @Getter private int gachaType;
     @Getter private int scheduleId;
     @Getter private String prefabPath;
-    @Getter private String previewPrefabPath;
+    private String previewPrefabPath;
     @Getter private String titlePath;
     private int costItemId = 0;
     private int costItemAmount = 1;
@@ -47,6 +47,12 @@ public class GachaBanner {
     private int costItem = 0;
     @Getter private int wishMaxProgress = 2;
 
+    public String getPreviewPrefabPath() {
+        if (this.previewPrefabPath != null && !this.previewPrefabPath.isEmpty())
+            return this.previewPrefabPath;
+        return "UI_Tab_" + this.prefabPath;
+    }
+
     public ItemParamData getCost(int numRolls) {
         return switch (numRolls) {
             case 10 -> new ItemParamData((costItemId10 > 0) ? costItemId10 : getCostItem(), costItemAmount10);

src/main/resources/defaults/data/Banners.json

@@ -5,7 +5,6 @@
 		"scheduleId": 803,
 		"bannerType": "EVENT",
 		"prefabPath": "GachaShowPanel_A016",
-		"previewPrefabPath": "UI_Tab_GachaShowPanel_A016",
 		"titlePath": "UI_GACHA_SHOW_PANEL_A016_TITLE",
 		"costItemId": 224,
 		"costItemAmount10": 8,
@@ -22,7 +21,6 @@
 		"scheduleId": 893,
 		"bannerType": "STANDARD",
 		"prefabPath": "GachaShowPanel_A022",
-		"previewPrefabPath": "UI_Tab_GachaShowPanel_A022",
 		"titlePath": "UI_GACHA_SHOW_PANEL_A022_TITLE",
 		"costItemId": 224,
 		"beginTime": 0,
@@ -37,7 +35,6 @@
 		"scheduleId": 903,
 		"bannerType": "EVENT",
 		"prefabPath": "GachaShowPanel_A091",
-		"previewPrefabPath": "UI_Tab_GachaShowPanel_A091",
 		"titlePath": "UI_GACHA_SHOW_PANEL_A045_TITLE",
 		"costItemId": 223,
 		"beginTime": 0,
@@ -53,7 +50,6 @@
 		"scheduleId": 923,
 		"bannerType": "EVENT",
 		"prefabPath": "GachaShowPanel_A092",
-		"previewPrefabPath": "UI_Tab_GachaShowPanel_A092",
 		"titlePath": "UI_GACHA_SHOW_PANEL_A018_TITLE",
 		"costItemId": 223,
 		"beginTime": 0,
@@ -70,7 +66,6 @@
 		"scheduleId": 913,
 		"bannerType": "WEAPON",
 		"prefabPath": "GachaShowPanel_A093",
-		"previewPrefabPath": "UI_Tab_GachaShowPanel_A093",
 		"titlePath": "UI_GACHA_SHOW_PANEL_A013_TITLE",
 		"costItemId": 223,
 		"beginTime": 0,