Reset all player stat when servers start

[3mptysl]

Im using this but doesnt work

@SubscribeEvent
    public static void serverStart(ServerStartedEvent event) {
        MinecraftServer server = event.getServer();
        Stat<ResourceLocation> stat = Stats.CUSTOM.get(StatsInit.MY_PLAY_TIME.get());
        server.getPlayerList().getPlayers().forEach(serverPlayer -> serverPlayer.resetStat(stat));
    }

 

[Luis_ST]

There are no Players on there server in ServerStartedEvent. You should reset the Stat in EntityJoinLevelEvent PlayerLoggedInEvent (might be the better Event).

Edited August 26, 2022 by Luis_ST

[ChampionAsh5357]

Statistics are loaded for a player when they first join the server. If you wanted to reset a stat, you should either do it when the player first joins after the restart via `PlayerLoggedInEvent` or read all JSONs in the player stats directory, reset the stat value, and write them back.

[3mptysl]

I need to ban a person when they have played 6 hours in a day and when the day is over, reset the time played so that they can play again. I have done it through a stats timeplayed when it reaches 6h it bans you and resets your time played but I don't know how to make it unban you when the day is over and also if you haven't been banned I reset your stat

[Luis_ST]

Subscribe to ServerTickEvent, in the Event you need to check the Time, you can get it from LocalTime#now.
Then check if the hour is 0 and if the second is 0, if this is the case clear the banned Players.

Note 1: Checking the second could lead problems if the server is laggy.
Note 2: You should not forget to reset the played time of all Players.

[warjort]

To answer the original question.

Try something like this **untested** code in your server starting event:

        MinecraftServer server = event.getServer();
        File statsDir = server.getWorldPath(LevelResource.PLAYER_STATS_DIR).toFile();
        
        // Needs an access transformer
        PlayerDataStorage storage = server.playerDataStorage;

        // For each player with an entry in the playerdata folder
        String[] uuids = storage.getSeenPlayers();
        for (String uuid : uuids) {
            
            // Load, change and save the stats
            File playerStats = new File(statsDir, uuid + ".json");
            ServerStatsCounter stats = new ServerStatsCounter(server, playerStats);
            // YOUR CODE HERE
            stats.save();
        }

As it says, you will need an access transformer to make the playerDataStorage field in MinecraftServer public.

https://forge.gemwire.uk/wiki/Access_Transformers

[3mptysl]

I don't know how to use accesstransformers, I have put this in my accesstransformer.cfg:

public net.minecraft.world.level.storage.PlayerDataStorage <init>(Lnet/minecraft/world/level/storage/LevelStorageSource$LevelStorageAccess;Lcom/mojang/datafixers/DataFixer;)V # PlayerDataStorage

but I still don't know what I should do since the server.playerDataStorage doesn't exist idk. what i need to put in accesstranformer.cfg? and how do i get playerDataStorage?

[warjort]

You changed the **constructor** of PlayerDataStorage to public.

You want to change the playerDataStorage field of MinecraftServer.

 

The link I posted above shows an example of changing a field:

Quote

# Makes protected the 'COLOR_WHITE' field in Gui

protected net.minecraft.client.gui.Gui f_168667_ # COLOR_WHITE

So you need know what forge calls your field

 

There is probably a more efficient way to do this, but this is how I do it:

1) Look at Mojang's deobfuscation mapping to see what they call field:

https://piston-data.mojang.com/v1/objects/8e8c9be5dc27802caba47053d4fdea328f7f89bd/client.txt

With some searching you will find:

Quote

net.minecraft.server.MinecraftServer -> net.minecraft.server.MinecraftServer: 

 

     net.minecraft.world.level.storage.PlayerDataStorage playerDataStorage -> i

This tells you Mojang call the field "i"

 

Now you need to find out what forge calls it:

https://raw.githubusercontent.com/MinecraftForge/MCPConfig/master/versions/release/1.19.2/joined.tsrg

and again some searching is required

Quote

net/minecraft/server/MinecraftServer net/minecraft/src/C_4977_ 4977

 

    i f_129745_ 129745

 

Now you have all the information you need:

public net.minecraft.server.MinecraftServer f_129745_ # playerDataStorage

Double check my logic is correct, I haven't tested this.

[Luis_ST]

1 hour ago, warjort said:

There is probably a more efficient way to do this, but this is how I do it:

You should use the Forge Bot on the Forge Discord server.
Command:

!moj <class_name>.<field_name> <version> // The version is optional if you use the latest version (currently 1.19.2)

Use the command in #bot-commands channel

[3mptysl]

Okay, i did the access transformer and now how i get the player by uuids, because i need to restart a stats and i need a player parameter, i try to create a Player.createPlayerUUID(uuids) but i think is not the correct form.

[3mptysl]

or i need to change the value reading and writing de json?

[warjort]

No, you don't create the player, that will cause all kinds of issues.

You update the ServerStatsCounter directly. e.g. the equivalent of your player.resetStat(stat) is

stats.setValue(null, stat, 0);

Although setValue() takes a player as the first parameter, you can see in the code it doesn't actually use it. So you can pass "null".

 

The idea of using the ServerStatsCounter to update the value is so you don't have worry about the correct handling of the json format.

[3mptysl]

Okayy, thats works perfect and how can i get MinecraftServer in ServerTickEvent, its possible?

 

[warjort]

Is that a serious question? Did you even look at that class?

[3mptysl]

Yes idk. i look TickEvent.ServerTickEvent class and i didnt see how i take MinecraftServer, because if i use WorldTickEvent i can take server with event.world.getServer()

maybe i'm tired and i don't see it.

Edited August 27, 2022 by 3mptysl

[Luis_ST]

Which version of Forge did you use?

[3mptysl]

1.18.2

[Luis_ST]

You then can use ServerLifecycleHooks#getCurrentServer, I suspect the @warjortthought that you are using 1.19 since in 1.19 there is ServerTickEvent#getServer.

[warjort]

Quote

I suspect the @warjortthought that you are using 1.19 since in 1.19 there is ServerTickEvent#getServer.

Correct.

It was also frustration at having to "spoon feed" every single line of code to the original poster.

I am not sure how much of this feature they have actually written for themselves. 🙂

 

Edited August 27, 2022 by warjort

[3mptysl]

Its okay. im sry