[Huawei online battle service] how can new players make up frames when the client quits reconnection or enters the game halfway?

The problem background

Use frame synchronization to realize multiplayer online games , Framing is an inextricable topic . Conventional weak net complementary frame ,SDK Automatic frame filling has been realized , Games can be ignored . For scenes where the client is shut down for a long time and re enters the room or players join in the middle of the game , New players play online SDK The default is to supplement the frame from the first frame of the game , The online game server will not cache all the supplementary frame data, which is usually cached 5 Minute history frame data , At this time, simply rely on SDK Automatic frame filling will fail . How to solve this problem , Here's a way of thinking .

Solution

Specify the owner of the house or a player in the room in the game , Regularly save the data status that needs to be synchronized in the current game （ For example, refresh every minute , The refresh cycle should be less than five minutes ）, And record the current frame id, Then synchronize the data to other players in the room through certain means （ For example, by modifying room properties , Save it in room properties ）, When new players join the room, they can go from room Get the room property in the instance , Then analyze the last room state data recorded therein , Get status data and frames id data .

At this time, only based on the room status data , Supplemented by slave frames id+1 After that, the synchronization of room data can be realized by supplementing frames .

How to specify from a id Start framing ？ Two scenarios ：

• Enabled SDK Auto framing scene , call SDK Reset the start of complementary frame provided id Interface .
  

• closed SDK Auto framing scene , call SDK Manual frame filling interface provided .
  

Get it done ！

Official information ： Huawei online battle service