MapArtGrid

Plan your map art with visible 128×128 map boundaries, similar to chunk borders. MapArtGrid is a lightweight client-side building aid for Minecraft Java 1.21.11 on Fabric.

Controls

• M — Toggle map boundaries and the grid.
• G — Cycle between a 16-block grid, a nearby single-block grid, and boundary-only mode.
• H — Set the grid height to the top of the block you are looking at. Without a targeted block, use your feet height.

All keys can be rebound under Options → Controls → Key Binds → MapArtGrid.

Features

• Cyan lines mark the current 128×128 map area; blue lines show 16-block subdivisions.
• Green lines show individual blocks near you in fine-grid mode.
• The HUD displays inclusive X/Z bounds, your map pixel coordinates (0–127), and grid height.
• Correct map alignment at positive and negative world coordinates.
• Boundaries follow your current map area; grid height stays fixed until you change it.
• Automatically turns off when changing worlds or dimensions.

Installation

Requires Minecraft Java 1.21.11, Fabric Loader 0.19.2 or newer, Fabric API, and Java 21. Place the mod JAR and Fabric API in your instance’s mods folder. Install on the client; no server plugin is needed.

Scope

Designed for standard, unzoomed maps (scale 0). Zoomed maps and custom server-shifted map centers are not read. Lines are hidden behind solid blocks. This mod visualizes a grid; it does not import images, place blocks, or change the world.

Initial version: compilation and map-boundary checks passed; in-game visual validation is still pending.

Deutsch

Mit M blendest du Kartengrenzen wie Chunk-Grenzen ein. G wechselt das Raster, H setzt die Bauhöhe auf den anvisierten Block. Für normale 128×128-Karten ohne Vergrößerung. Benötigt Fabric und Fabric API für Minecraft 1.21.11.