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Litematica Printer Easyplace Extension Mod (1.21.1, 1.20.1) – Redstone-Aware Fast Block Auto Placement

Litematica Printer Easyplace Extension Mod provides a redstone-aware fast block auto placement system built on top of Litematica’s EasyPlace. It supports…

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Litematica Printer Easyplace Extension Mod provides a redstone-aware fast block auto placement system built on top of Litematica’s EasyPlace. It supports directional blocks, accurate placement protocols and various automation utilities for technical builds.

Features:

How It Works

Supports directional block placement on vanilla servers using Fake Rotation.
Can use accurateBlockPlacement with carpet-extra on the server for faster and more reliable placement.
If Carpet Extra (or its fork) is present, uses accurate protocols when available; without protocol, it still aims to place blocks correctly.
Tries to avoid failures related to:
- Update order
- Observers / BUD mechanics
- Pistons and block states
- Falling blocks and similar edge cases
Handles blocks with multiple states such as composters, snow layers, sea pickles, etc.
Provides utilities for removing fluids, clearing areas and bedrock breaking (not guaranteed).

Bedrock Breaking Notes

Bedrock breaking behavior is highly dependent on your ping.
Set the printer delay higher than your ping. For example:
- If your ping is 200 ms, set delay above 0.2.
- In singleplayer, ping is effectively 0, so any value works.

Caution and Server Compatibility

Paper, Spigot and similar server types may use anti-cheat that blocks “not-looking” placements.
On such servers, printing may be partially or completely unusable.
There are options to slow/nerf printing, but functionality is not guaranteed.
Use the printer only if you understand and accept the risks and limitations on your target server.

Settings Overview

Litematica Additions

easyPlaceMode++ – Disables the printer but uses Fake Rotation-based EasyPlace.
verifierFindInventoryContents – Marks blocks with inventory contents as “wrong state” even when states are correct, useful for comparator-related builds.
printerOff – Turns off the printer and uses normal EasyPlace.
printerUseInventoryCache – Uses an internal inventory cache to reduce desync.

Printer Settings – Inventory and Block Management

printerAllowInventoryOperations – Enables automated matching and inserting of required stacks into hoppers, droppers, chests and similar blocks (e.g. filter setups).
inventoryCloseScreenAfterDone – Closes inventory screens when filling is finished or cannot continue.
printerInventoryScreenWait – Delay in milliseconds after opening an inventory screen to allow server sync.
printerInventoryOperationRetry – Number of retries for slot-click operations (recommended: 3-20).
printerInventoryOperationAllowAllNamed – Allows any items with the same stack size and a name to be used as filter items.
printerBreakBlocks – Breaks all extra or wrong blocks within the schematic (can run during placement, but not recommended).
printerBedrockBreaking – Automates bedrock breaking; assumes Haste II, Efficiency V and requires redstone torches and pistons.
printerBedrockBreakingUseSlimeblock – Allows use of slime blocks when searching valid bedrock-breaking positions.
printerFlippincactus – Uses cactus to flip blocks where applicable.
printerClearFluids – Clears fluids using cobblestone or sponge by default (lava/water clearing).
printerClearFluidsUseCobblestone – Uses cobblestone instead of sponge for water clearing.
printerClearSnowLayer – Uses string to remove snow layers.

Main Placement Features

printerAccurateBlockPlacement – Uses the AccurateBlockPlacement protocol via Carpet Extra when available.
printerFakeRotation – Uses fake rotations to ensure correct facing for directional blocks.
printerFakeRotationTicks – Number of ticks (1 tick = 50 ms) to wait after sending rotation packets.
printerFakeRotationLimitPerTicks – Limits the number of fake rotations per tick when rotation wait ticks are set to 0.
disableSingleplayerPlacementHandling – Disables internal singleplayer placement direction adjustments based on fake rotation (recommended: false).

Debug Options

ShowDebugMessages – Prints debug messages when placements fail, are skipped or otherwise adjusted.
ShowDebugExtraMessages – Shows additional information about current block placements and fake rotations.

Limiting and Performance

easyPlaceModePrinterRangeX / Y / Z – Limits placement to a region expanded from the starting raytrace position.
easyPlaceModePrinterMaxBlocks – Maximum blocks or interactions the printer can perform per tick.
easyPlaceModeDelay – Delay between actions (recommended: greater than 0.05, i.e. 50 ms, for state sync).
easyPlaceModeHotbarOnly – Restricts usage to hotbar slots for fewer packet changes.
printerSleepStackEmptied – Pauses printing when the current item stack is emptied, preventing desync and some anticheats.
easyPlaceModePrinterMaxItemChanges – Limits item-switch actions per cycle (recommended: 2).
printerBreakIgnoresExtra – Skips breaking blocks marked as “extra”; applies to both general breaking and bedrock-breaking routines.

Redstone-Specific Options

printerUsePumpkinpieForComposter – Uses pumpkin pie to match specific composter levels.
printerSmartRedstoneAvoid – Follows observer and other redstone update order to avoid unintended updates.
printerObserverAvoidAll – Avoids placing observers facing blocks in wrong states; may place walls or similar support blocks instead where needed.
printerAvoidCheckOnlyPistons – Ignores dispenser quasi-connectivity checks.
printerSuppressPushLimitPistons – Avoids placing pistons that would be directly powered but not extended (push limit related).
printerUseIceForWater – Places ice where water sources should be, to be later melted.
printerCheckWaterFirstForWaterlogged – Delays waterlogged block placement until water is present.
printerPlaceMinecart – Places minecarts for powered detector rails when safe; avoids placing them if TNT would be triggered.