fix: bullets don't update in Unity 2019.4.13f1c1

Author: IF-ACT

Packages/bullet-storm-unity/Scripts/Runtime/BulletSystem/BulletSystemBase.cs

@@ -56,7 +56,7 @@ protected void Start()
         /// <summary>
         /// Executes tracing module.
         /// </summary>
-        protected void Update()
+        protected virtual void Update()
         {
             if (enableTracing) tracing.OnUpdate(this);
         }

Packages/bullet-storm-unity/Scripts/Runtime/BulletSystem/ParticleBulletSystem.cs

@@ -35,12 +35,13 @@ public class ParticleBulletSystem : BulletSystemBase
 		public override void ChangeVelocity(Func<Vector3, Vector3, Vector3> operation)
 		{
 			UpdateParticles();
+			var renderMode = psr.renderMode;
 			Parallel.For(0, particleCount, i =>
 			{
 				var oldVelocity = particles[i].velocity;
 				particles[i].velocity = operation(particles[i].position, oldVelocity);
 				// also change rotation if particle is mesh
-				if (psr.renderMode == ParticleSystemRenderMode.Mesh)
+				if (renderMode == ParticleSystemRenderMode.Mesh)
 				{
 					particles[i].rotation3D =
 						(Quaternion.FromToRotation(oldVelocity == Vector3.zero ? Vector3.forward : oldVelocity,
@@ -150,8 +151,9 @@ private void Awake()
 #endif
 		}
 
-		private void LateUpdate()
+		protected override void Update()
 		{
+			base.Update();
 			WriteParticles();
 		}
 	}