1.20.1 Forge

Signal Radar for Minecraft 1.20.1 (Forge)

Status: Complete & Released (branch 1.20.1). Signal Radar is fully ported and supported on Minecraft 1.20.1 Forge with complete feature parity, optimized performance, and modern mod integrations.

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Requirements

• Minecraft: 1.20.1
• Mod Loader: Forge 47.1.0 or higher
• Java: 17+ (built with Java 17 toolchain)
• Side: Required on both Client and Server. No other mod is strictly required.

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Features

Signal Radar 1.20.1 provides all features from the 1.21.1 version:

• Handheld CRT Display: Real-time rotating sweep drawn directly on the held radar item (no GUI or HUD overlay).
• Five Radar Tiers: Upgradable via radar modules, scaling range, reducing positional fuzz, and expanding addon slots.
• Addon System: Custom modular upgrades for detecting containers, ores, biosigns/mobs, motion, structures, batteries, and optional mods.
• Narrative Targets: Plain datapack JSON targets (pos, structure, entity, block locators) with per-player stages, unlock conditions, and found flow.
• Server-Authoritative: Scans computed server-side with fuzz, name reveal, and packet syncing.

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Key Differences from 1.21.1

1. Asynchronous Structure Searches

Structure lookups in 1.20.1 are offloaded to an asynchronous background worker daemon thread. Heavy structure generator calculations (such as searching over a 64-chunk radius in dimensions with 100+ structures) will never block or stutter the main server tick loop.

2. Addon Slot Quick-Move

The addon menu supports full-stack shift-clicking:

• Battery Modules: Shift-clicking a stack of up to 8 batteries inserts the entire stack into an available addon slot in a single click.
• Slot Capacity: Addon slots automatically enforce maxInSlot (8 for batteries, 1 for other functional addons).

3. Ore Detection Tags

In 1.20.1, block tags use the standard plural directory convention: data/signalradar/tags/blocks/ore_targets.json. The detector actively matches #signalradar:ore_targets, #forge:ores, and #c:ores, ensuring full compatibility with vanilla ores, Forge common ores, and modded ores.

4. Optional Mod Integrations

• Manhole Travel (1.7.3+): Detects all nearby manholes (city manholes, home manholes, and open manholes) with per-look icons.
• Lootr (1.20.1): Detects unopened instanced Lootr containers.
• FTB Teams (Architectury 1.20.1): Displays online team members with custom color blips across the dimension.
• KubeJS 6 (1.20.1): Register custom addons and listen to scan events using KubeJS 6 startup and server scripts.

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Datapacks & Modpacks

For pack makers creating custom content on 1.20.1:

• Tag paths: Use 1.20.1 folder naming:
  • data/<namespace>/tags/blocks/
  • data/<namespace>/tags/items/
  • data/<namespace>/tags/entity_types/
• Sub-tag references: Always include the # prefix when referencing other tags in values (e.g. "#forge:ores").
• Target files: Located in data/<namespace>/signalradar/target/<name>.json.

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Configuration

Configurations are stored in:

• config/signalradar-client.toml: Zoom key, radar hand orientation, sound settings, display brightness.
• config/signalradar-startup.toml: Mod startup options.
• saves/<world>/serverconfig/signalradar-server.toml (or defaultconfigs/signalradar-server.toml):
  • energy.capacity & energy.maxReceive
  • scan.scanCost, scan.rangeByTier, scan.structureSearchMaxChunks (default: 64)
  • addons.*: individual toggles, tier requirements, energy costs, and detection radii.

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Source & Download

• Git Branch: 1.20.1
• Refer to Home for other versions or general overview.