feat: 实现下载时提示和下载单个文件功能

scenes/settings.tscn

@@ -76,19 +76,19 @@ theme_override_fonts/font = ExtResource("2_6wm04")
 theme_override_font_sizes/font_size = 24
 
 [node name="SaveButton" type="Button" parent="."]
-offset_left = 89.0
+offset_left = 93.0
-offset_top = 902.0
+offset_top = 913.0
-offset_right = 253.0
+offset_right = 257.0
-offset_bottom = 979.0
+offset_bottom = 990.0
 theme_override_fonts/font = ExtResource("2_6wm04")
 theme_override_font_sizes/font_size = 30
 text = "保存设置"
 
 [node name="DownloadButton" type="Button" parent="."]
-offset_left = 495.0
+offset_left = 493.0
-offset_top = 912.0
+offset_top = 905.0
-offset_right = 671.0
+offset_right = 669.0
-offset_bottom = 1001.0
+offset_bottom = 994.0
 theme_override_fonts/font = ExtResource("2_6wm04")
 theme_override_font_sizes/font_size = 30
 text = "下载文件"
@@ -102,6 +102,12 @@ theme_override_fonts/font = ExtResource("2_6wm04")
 theme_override_font_sizes/font_size = 30
 text = "取消"
 
+[node name="Tips" type="Label" parent="."]
+offset_left = 711.0
+offset_top = 913.0
+offset_right = 1738.0
+offset_bottom = 966.0
+
 [connection signal="pressed" from="SaveButton" to="." method="_on_save_button_pressed"]
 [connection signal="pressed" from="DownloadButton" to="." method="_on_download_button_pressed"]
 [connection signal="pressed" from="CancelButton" to="." method="_on_cancel_button_pressed"]

scripts/autoload/DownloadManager.gd

@@ -1,53 +1,19 @@
 extends Node
 
-@onready var http_request = $HTTPRequest
+func download_file(server_path: String, local_path: String) -> void:
+    var http = HTTPRequest.new()
+    http.download_file = local_path
+    http.request(server_path)
 
-# 下载文件
+func download_from_origin() -> int:
-func download_file(url: String, filename: String):
+    var origin = GameManager.data_origin
-    # 构建保存路径
-    var save_path = "user://" + filename
-    print("开始下载: ", url)
-    print("保存到: ", save_path)
 
-    # 发送请求
+    if origin.substr(0, 4) != "http":
-    var error = http_request.request(url)
+        return 1
-    if error != OK:
-        push_error("请求发送失败: " + str(error))
-        return false
-    
-    # 连接信号（一次性）
-    if http_request.is_connected("request_completed", _on_request_completed):
-        http_request.request_completed.disconnect(_on_request_completed)
-    
-    http_request.request_completed.connect(_on_request_completed.bind(save_path), CONNECT_ONE_SHOT)
-    
-    return true
-
-# 请求完成回调
-func _on_request_completed(result, response_code, headers, body, save_path):
-    if result != HTTPRequest.RESULT_SUCCESS:
-        push_error("下载失败，错误代码: " + str(result))
-        return
-    
-    if response_code != 200:
-        push_error("HTTP错误: " + str(response_code))
-        return
-    
-    # 保存文件
-    var file = FileAccess.open(save_path, FileAccess.WRITE)
-    if file == null:
-        push_error("无法创建文件: " + save_path)
-        push_error("错误: " + str(FileAccess.get_open_error()))
-        return
-    
-    file.store_buffer(body)
-    file.close()
-    
-    print("文件保存成功: " + save_path)
-    print("文件大小: " + str(body.size()) + " 字节")
-
-func download_from_origin() -> void:
-    if GameManager.data_origin.substr(0, 4) != "http":
-        return
     
     
+
+    return 0
+
+func load_resource():
+    pass

scripts/settings/settings.gd

@@ -17,4 +17,11 @@ func _on_cancel_button_pressed() -> void:
 
 
 func _on_download_button_pressed() -> void:
-	pass # Replace with function body.
+	$Tips.text = "提示：已开始下载，请勿关闭设置页面"
+	var result: int = DownloadManager.download_from_origin()
+	if result == 1:
+		$Tips.text = "提示：下载失败。数据源路径错误"
+	$Tips.text = "提示：正在加载资源，请勿关闭设置页面"
+	DownloadManager.load_resource()
+	$Tips.text = "提示：完成加载"
+