Threat Radar

Threat Radar is a tiny client-side HUD that warns you about danger before it reaches you.

80x80 px mini-radar in the top-right corner.
Shows hostile mobs within 32 blocks as colored blips: red for hostiles, bright green for creepers.
Facing-up rotation - the radar always points where you are looking, like a minimap.
A line under the radar shows Hostiles: N (Xm) where X is the distance to the nearest threat. Color goes orange under 16 m and red under 8 m.
A second line shows a dedicated Creepers: N count when any are nearby (the one mob you really want to see coming).
Toggle the radar with R (configurable in source).
Client-side only, no server install needed. Respects F1 (HUD-hidden).
No mixins, no world rendering - uses only the stable World.getOtherEntities + Fabric HudRenderCallback paths so the same JAR loads on Minecraft 1.21.8 through 1.21.11.

Use it in caves, on adventure maps, or anywhere you want to spot a skeleton before the skeleton spots you.

Compatibility

MIT - do whatever you want, no warranty.