PillarPlan

PillarPlan is a client-side building tool for planning evenly spaced pillars along connected paths.

Choose a start block with P, then add straight path points along the X or Z axis. PillarPlan shows the calculated pillar positions as outlines without placing or changing any blocks.

Change the target spacing with G and K. All completed sections update automatically when the spacing changes.

Straight paths

For straight sections, PillarPlan uses two types of spacing:

• Exact spacing: Every gap has the same width
• Balanced spacing: Neighboring gaps differ by at most one block

This makes it possible to distribute pillars across sections where perfectly equal spacing is not possible.

Curved paths

Curved sections are also supported.

Press C, select a guide block with P, then select the endpoint. The start point, guide point and endpoint are used to define a circular arc.

Pillar positions along curves are rounded to the Minecraft block grid and shown as approximate positions.

Controls

• P - Select the start or add another path point
• G - Increase the target gap
• K - Decrease the target gap
• C - Start or cancel a curved section
• U - Undo the latest action
• O - Clear the complete plan

All keybinds can be changed in Minecraft's Controls menu.

Client-side only

PillarPlan runs entirely on the client and does not need to be installed on the server.

It does not:

• Place or modify blocks
• Consume items
• Modify the world
• Send custom network packets

It only displays the planned pillar positions to the player using the mod.

Requirements

• Minecraft Java Edition 1.21.11
• Fabric Loader
• Fabric API
• Java 21

Current limitations

• Horizontal paths only
• Straight sections must follow the X or Z axis
• Curves use circular block-grid approximations
• One-block-wide pillars
• Maximum of 256 blocks per section
• Plans are not saved after leaving the world