🧱Overview

Codecs and small utility classes.

The base module contains some small utility classes used elsewhere:

Ephemeral2

An object that can hold a single value and return them a certain amount of times. Used by my mods to pass arguments between functions in mixins. Example use case:

public void dropItems(List<ItemStack> items, BlockPos pos, ServerPlayer player) {
    for (ItemStack item : items) {
         dropItem(item);   
    }
}

public void dropItem(ItemStack item, BlockPos pos) {
     level.createItem(item, pos);
}

If we wanted to change level.createItem() so that it depends on player:

@Unique
private final Ephemeral2<ServerPlayer> SAVED_PLAYER = new Ephemeral2<>();

@Inject(method="dropItems", at = @At("HEAD"))
private void recordPlayer(List<ItemStack> items, BlockPos pos, ServerPlayer player, CallbackInfo ci) {
    SAVED_PLAYER.push(player, items.size());
}

@Inject(method="dropItem", at = @At("HEAD"), cancellable = true)
private void usePlayer(ItemStack item, BlockPos pos, CallbackInfo ci) {
    ServerPlayer player = SAVED_PLAYER.pop();
    
    // here we'd use the player
}

ResultHolder

Object that can hold a result from an event, designed to be used with cancellable events from Fabric API.

Memoizer

Small class to lazily initialize an object.

ServerTracker

Static access to the currently running MinecraftServer object.