💎 OptiPlus-Crystal

Zero-wait end crystal placement for Minecraft

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🔎 What does it do?

OptiPlus-Crystal removes the round-trip wait between clicking obsidian and seeing an end crystal appear. A client-only crystal entity is dropped in at the placement position the moment you click, and the real server crystal silently takes its place once the entity-spawn packet arrives.

The result: crystal placement feels single-player-snappy regardless of ping. No more waiting on the server to acknowledge your click before your crystal shows up, no more stuttery placement loops during crystal PvP.

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✅ Is this allowed?

No servers have been explicitly confirmed yet.

Please check with server staff before using this on any server, rules around crystal optimizations vary, and what's allowed on one server may be bannable on another.

⚠️ Use at your own risk until a server has clearly approved it.

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📥 How to use?

Steps:

1. Drop the .jar into your .minecraft/mods folder.

2. Make sure you have Fabric Loader installed.

3. Launch Minecraft.

Requirements:

✅ Fabric Loader

✅ Compatible Minecraft version

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🔧 Compatibility

Should work fine alongside any mods that don't alter end crystal behavior directly.

May conflict with:

❌ Mods that change how crystals are placed

❌ Mods that change crystal explosion or entity behavior

❌ Mods that add their own client-side crystal handling

If you run into weirdness, try isolating the issue by disabling other crystal-related mods first.

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💡 How it works (for the curious)

When you click obsidian to place a crystal, the vanilla client waits for the server to:

1. Receive your interaction packet

2. Validate the placement

3. Spawn the crystal entity

4. Send the entity-spawn packet back to you

That's one full round trip of latency before you see anything. On a 100ms-ping server, that's 100ms of nothing.

OptiPlus-Crystal skips the wait by spawning a local, client-only ghost crystal instantly, then seamlessly replacing it with the real server crystal when the spawn packet arrives. You get the visual feedback of single-player placement while still playing on a real server.

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Built for clean, lag-free crystal gameplay.

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🛡️ Server-side opt-out

Per Modrinth rule 3.2, server admins can disable OptiPlus-Crystal for connected players. The mod listens for an empty plugin-channel message on optiplus:disable (kills both OptiPlus variants) or optiplus-crystal:disable (this variant only). The flag clears on disconnect, so the server must re-send the signal on each join.

Paper / Spigot / Bukkit:

server.getMessenger().registerOutgoingPluginChannel(plugin, "optiplus-crystal:disable");
// on PlayerJoinEvent:
event.getPlayer().sendPluginMessage(plugin, "optiplus-crystal:disable", new byte[0]);

Fabric server mod: send a CustomPayloadS2CPacket whose payload id is optiplus-crystal:disable (any body works) to the joining player.

Velocity / BungeeCord: forward a plugin message on optiplus-crystal:disable to the backend, or send it from the proxy.