How to implement realistic acceleration, starts, stops, and pivot animations with inertia in UE5?

Development Character & Animation
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1

Hi everyone,

I’m currently working on my character locomotion system in UE5, and I’ve run into an issue where character movement feels very abrupt and rigid.

Right now, when pressing keys like W+D or D from Idle, the character snaps into running immediately without any acceleration or startup step (wind-up). Similarly, when running forward (W) and suddenly pressing S to stop/reverse, the character snaps directions instantly instead of showing momentum, leaning back to brake, planting feet, or pivoting realistically.

I would love to learn the best practices for handling this in UE5:

  1. Starts & Acceleration: How do I set up transition states (e.g., Starts / Wind-up steps) when initiating movement from different angles instead of instantly snapping into a run loop?
  2. Pivots & Sudden Direction Changes: What is the recommended way to detect when a player suddenly changes direction (e.g., forward to backward/side) and trigger a lean-back / plant-foot pivot animation based on velocity and acceleration yaw?
  3. Stops & Momentum: How should deceleration/stops be configured so the character slides slightly with inertia before returning to Idle?

Should I achieve this using a traditional 4-state system (Starts → Loops → Pivots → Stops) with blend angles, or is it better to leverage Distance Matching and Orientation/Stride Warping in UE5?

Any detailed guides, node setup examples, or recommended workflows would be greatly appreciated!

Thanks in advance!

2

Like always?

Animation states that transition from one to the other while driving the speed with animation curves.

You shouldnt trust or use anything epic made or endorsed as it really just won’t work.

There are no tutorials on this, it’s a baseline concept. What you implement and how is entierly indivisualized to you.

On the other hand you can try and probably draw inspiration from ALS or similar plugins that offer some version of distance matching. Quality is lacking, but it gives you an idea on some ways to do things, if you are super new at the concept.

Also, some id10t is going to no doubt chime in with “ai” or “ML Deformer” or some other such nonsense. Obviously anyone should avoid that and actually learn the baseline concept to be able to implement systems with any engine…