Pick Block Optimizer

WARNING

This mod may cause bans in some servers. Please ask a moderator in the server your gonna use it on if the mod is allowed.

Overview

This update improves responsiveness and correctness of the Pickblock action in multiplayer environments with high latency (high ping) and reduces visual ghosting caused by client–server state desynchronization.

Improvements

1. Pickblock Now Applies and Syncs Without Waiting for Server Confirmation

Previously, when a player used Pickblock (e.g., middle‑click on PC), the action was sent to the server and the client waited for the server to acknowledge and confirm the selection. On high‑ping connections, this introduced a noticeable pause before the client updated the player's inventory or UI.

Now:

• The client immediately predicts and applies the Pickblock result locally.
• If the server's authoritative result differs from what the client predicted, the client updates accordingly when that response arrives.

This eliminates the feeling of input lag caused by round‑trip network latency.

Why this matters: waiting on server response can add significant delay (100 ms–500 ms or more) on high‑latency connections; predicting locally removes that waiting period for quick actions such as selecting items.

2. Ghost Block Desynchronization Caused by Pickblock Resolution Reduced

A ghost block occurs when the client and server disagree about the presence or selection of a block. In the specific case this update addresses:

• The server has accepted the Pickblock action and updated its world state.
• But the client hasn't yet applied that update, so it visually shows no selection or the wrong block.
• This results in the server and client having mismatched views — the server records the block, but the client renders differently.

This update reduces such mismatches by:

• Faster update propagation: New architecture processes block state packets more promptly on the client.
• Priority reconciliation: When the server's authoritative state arrives (block selected or updated), the client incorporates it quickly to prevent a prolonged mismatch.
• Smaller desync windows: The client stops waiting on server responses for display purposes and instead updates its own view based on both prediction and timely server correction.

These improvements cut down on occurrences where the server thinks Pickblock happened but the client hasn't reflected the pick, so players don't see an empty result due to delayed client updates.

Technical Details

• Client‑local prediction: The client predicts simple actions like Pickblock locally and updates UI immediately. The server still authoritatively confirms or corrects that prediction in the background.
• Asynchronous syncing: The server update is handled without blocking input or UI — updates come in as packets and the client reconciles them promptly.
• Reduced mismatch duration: Ghosting often happens in the window where the server has acted but the client hasn't updated; by prioritizing those updates and applying corrections faster, that window is much smaller.

Expected Results

Summary

This update makes Pickblock feel immediate by using local prediction and asynchronous server confirmation, and it significantly reduces ghost blocks caused when the server's accepted action wasn't reflected in the client's view due to delayed networking. Players with high latency will notice both better responsiveness and fewer visual inconsistencies in block selection and interaction.