Reactive with R3
If you had R3 imported, you can use Reactive on Kassets' instances. First, make sure to import R3 to your project. Upon import, Kassets will adjust internally to support R3 using scripting define KASSETS_R3. It would normally be defined when R3 is imported using package manager. If somehow KASSETS_R3 is undefined, add it to Scripting Define Symbols on Project Settings.
To use Kassets reactively, simply Subscribe to a GameEvent instances or its derivation.
public class HealthBarUI : MonoBehavior
{
[SerializeField] private FloatVariable health;
[SerializeField] private FloatVariable maxHealth;
[SerializeField] private Image healthBar;
private IDisposable subscription;
private void Start()
{
subscription = health.Subscribe(UpdateHealthBar);
}
private void UpdateHealthBar(float currentHealth)
{
var rt = healthBar.rectTransform;
var sizeDelta = rt.sizeDelta;
sizeDelta.x = 2 * (currentHealth / maxHealth);
rt.sizeDelta = sizeDelta;
}
private void OnDestroy()
{
subscription?.Dispose();
}
}