1

server-rs/crates/api-server/src/custom_world_foundation_draft.rs

@@ -976,7 +976,8 @@ fn build_foundation_draft_user_prompt(session: &CustomWorldAgentSessionRecord) -
         "3. coreConflicts 必须至少 1 条。".to_string(),
         "4. chapters 或 sceneChapterBlueprints 必须体现主线第一幕。".to_string(),
         "5. sceneChapterBlueprints[0].acts 至少 1 条。".to_string(),
-        "6. summary 要像结果页摘要，不要只是原始 seed 重复。".to_string(),
+        "6. sceneChapterBlueprints[*].acts[*].backgroundPromptText 必须逐幕生成，作为每一幕生成背景图时默认填入的场景画面描述，不要只生成一个全局场景背景提示词。".to_string(),
+        "7. summary 要像结果页摘要，不要只是原始 seed 重复。".to_string(),
     ]
     .join("\n\n")
 }
@@ -1452,10 +1453,58 @@ fn normalize_scene_chapter_blueprint(chapter: JsonValue) -> JsonValue {
             "acts".to_string(),
             JsonValue::Array(vec![build_fallback_scene_act()]),
         );
+    } else {
+        object.insert(
+            "acts".to_string(),
+            JsonValue::Array(
+                acts.into_iter()
+                    .enumerate()
+                    .map(|(index, act)| normalize_scene_act_blueprint(act, index))
+                    .collect(),
+            ),
+        );
     }
     JsonValue::Object(object)
 }
 
+fn normalize_scene_act_blueprint(act: JsonValue, index: usize) -> JsonValue {
+    let mut object = act.as_object().cloned().unwrap_or_default();
+    let fallback_act = build_fallback_scene_act_with_index(index);
+    let fallback_prompt = fallback_act
+        .get("backgroundPromptText")
+        .and_then(JsonValue::as_str)
+        .unwrap_or("当前幕场景背景，突出可探索空间、站位地面和局势氛围。")
+        .to_string();
+    let title = object
+        .get("title")
+        .and_then(JsonValue::as_str)
+        .map(str::trim)
+        .filter(|value| !value.is_empty())
+        .map(ToOwned::to_owned)
+        .unwrap_or_else(|| format!("第{}幕", index + 1));
+    let summary = object
+        .get("summary")
+        .and_then(JsonValue::as_str)
+        .map(str::trim)
+        .filter(|value| !value.is_empty())
+        .map(ToOwned::to_owned)
+        .unwrap_or_else(|| "当前幕推动场景内的主线压力。".to_string());
+    object.insert("title".to_string(), JsonValue::String(title.clone()));
+    object.insert("summary".to_string(), JsonValue::String(summary.clone()));
+    let background_prompt = object
+        .get("backgroundPromptText")
+        .and_then(JsonValue::as_str)
+        .map(str::trim)
+        .filter(|value| !value.is_empty())
+        .map(ToOwned::to_owned)
+        .unwrap_or_else(|| format!("{title}：{summary}。{fallback_prompt}"));
+    object.insert(
+        "backgroundPromptText".to_string(),
+        JsonValue::String(background_prompt),
+    );
+    JsonValue::Object(object)
+}
+
 fn build_fallback_scene_chapter_blueprint() -> JsonValue {
     json!({
         "id": "chapter-act-1",
@@ -1466,10 +1515,15 @@ fn build_fallback_scene_chapter_blueprint() -> JsonValue {
 }
 
 fn build_fallback_scene_act() -> JsonValue {
+    build_fallback_scene_act_with_index(0)
+}
+
+fn build_fallback_scene_act_with_index(index: usize) -> JsonValue {
     json!({
-        "id": "scene-act-1",
-        "title": "开场场景幕",
+        "id": format!("scene-act-{}", index + 1),
+        "title": if index == 0 { "开场场景幕".to_string() } else { format!("第{}幕", index + 1) },
         "summary": "玩家被推入第一波局势，必须先确认站位、威胁和下一步追查方向。",
+        "backgroundPromptText": "第一幕场景背景，突出玩家初入现场时的空间轮廓、可站立地面、远近景层次和第一波威胁氛围。",
     })
 }