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package moe.nea.firmament.features.misc
import io.netty.buffer.ByteBuf
import net.fabricmc.fabric.api.networking.v1.PacketByteBufs
import net.fabricmc.fabric.api.networking.v1.PayloadTypeRegistry
import net.fabricmc.loader.api.FabricLoader
import net.minecraft.network.codec.PacketCodec
import net.minecraft.network.codec.PacketCodecs
import net.minecraft.network.packet.CustomPayload
import net.minecraft.network.packet.c2s.common.CustomPayloadC2SPacket
import moe.nea.firmament.Firmament
import moe.nea.firmament.annotations.Subscribe
import moe.nea.firmament.events.JoinServerEvent
/**
* This is a class that announces all mods to hypixel (or any other server you connect to).
*
* I don't mind cheat mods, i just think they should be honest about themselves.
*
* If you are a cheat mod (or think you could possibly be seen as one), you have two options:
*
* - risk getting your users banned from hypixel by exposing your modid + version number in a packet sent on first connect
* - hide yourself from this list by either a mixin, or (more easily) by specifying a tag in your fabric.mod.json:
*
* ```json
* {
* "schemaVersion": 1,
* "id": "my-cheat-mod",
* "custom": { "firmament:hide_from_modlist": true }
* }
* ```
*/
object ModAnnouncer {
data class ModEntry(
val modid: String,
val modVersion: String,
) {
companion object {
val CODEC: PacketCodec<ByteBuf, ModEntry> = PacketCodec.tuple(
PacketCodecs.STRING, ModEntry::modid,
PacketCodecs.STRING, ModEntry::modVersion,
::ModEntry
)
}
}
data class ModPacket(
val mods: List<ModEntry>,
) : CustomPayload {
override fun getId(): CustomPayload.Id<out ModPacket> {
return ID
}
companion object {
val ID = CustomPayload.Id<ModPacket>(Firmament.identifier("mod_list"))
val CODEC: PacketCodec<ByteBuf, ModPacket> = ModEntry.CODEC.collect(PacketCodecs.toList())
.xmap(::ModPacket, ModPacket::mods)
}
}
@Subscribe
fun onServerJoin(event: JoinServerEvent) {
val packet = ModPacket(
FabricLoader.getInstance()
.allMods
.filter { !it.metadata.containsCustomValue("firmament:hide_from_modlist") }
.map { ModEntry(it.metadata.id, it.metadata.version.friendlyString) })
val pbb = PacketByteBufs.create()
ModPacket.CODEC.encode(pbb, packet)
if (pbb.writerIndex() > CustomPayloadC2SPacket.MAX_PAYLOAD_SIZE)
return
event.networkHandler.sendPacket(event.packetSender.createPacket(packet))
}
init {
PayloadTypeRegistry.playC2S().register(ModPacket.ID, ModPacket.CODEC)
}
}
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