Momentum mod overview

• Server-side Fabric mod for Minecraft 1.21.1 that tracks how actively players move, jump, and break blocks. Staying in motion builds momentum; standing still or taking damage bleeds it off.
• A lightweight action-bar meter shows current momentum with a percent readout so players can see how close they are to full flow.
• Momentum grants small bonuses that scale with progress: movement speed via an attribute modifier, a brief hidden Haste effect for mining, and a gentle jump boost at higher momentum. Bonuses fade as momentum decays, keeping the feel close to vanilla.
• Breaking blocks, sprinting, and jumping give extra gains; taking damage applies a penalty; momentum decays after a short idle grace period. Respawning preserves half of any momentum you had before death.
• Configuration file config/momentum.json is written on first launch with tunables for momentum caps, gain/decay rates, bonus strengths, action-bar cadence, and thresholds. Edit values and restart the server to customize the feel.
• Purely server-side; clients join without installing anything, and potion visuals are hidden to keep the HUD clean.