Binding

In LitMotion, it is required to bind the values to the target fields or properties when creating a motion. The values of the motion are updated within the PlayerLoop specified by the Scheduler, and the latest values are reflected in the bound fields/properties.

var value = 0f;
LMotion.Create(0f, 10f, 2f)
    .Bind(x => value = x); // Pass Action<T> to update the value

Avoiding Allocations

Lambda expressions passed to Bind() cause allocations due to capturing external variables (known as closures).

Additionally, by passing the state as an argument to Bind(), you can avoid allocations caused by closures.

class FooClass
{
    public float Value { get; set; }
}

var target = new FooClass();

LMotion.Create(0f, 10f, 2f)
    .Bind(target, (x, target) => target.Value = x); // Pass the target object as the first argument

Extension Methods

The LitMotion.Extensions namespace provides extension methods to simplify value binding.

using UnityEngine;
using LitMotion;
using LitMotion.Extensions; // Include this namespace

public class Example : MonoBehaviour
{
    [SerializeField] Transform target;

    void Start()
    {
        LMotion.Create(Vector3.zero, Vector3.one, 2f)
            .BindToPosition(target); // Bind value to target.position

        LMotion.Create(1f, 3f, 2f)
            .BindToLocalScaleX(target); // Bind value to target.localScale.x
    }
}

Playing Without Binding

To play motions without value binding, use RunWithoutBinding() to create a motion without binding.

LMotion.Create(0f, 0f, 2f)
    .WithOnComplete(() => Debug.Log("Complete!"))
    .RunWithoutBinding();

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If you require further assistance or have more questions, feel free to ask!