Initial Commit

Assets/Scripts/Systems/CollisionSoundSystem.cs

@@ -0,0 +1,56 @@
+using Unity.Entities;
+using UnityEngine;
+using Zenject;
+
+namespace DefaultNamespace
+{
+	public class CollisionSoundSystem : InjectableComponentSystem
+	{
+		private readonly ContactPoint2D[] contactsTmp = new ContactPoint2D[32];
+		[Inject] private readonly SoundManager soundManager;
+
+		protected override void OnSystemUpdate()
+		{
+			var deltaTime = Time.DeltaTime;
+
+			Entities.WithNone<CollisionSoundTimer>()
+				.WithAllReadOnly<CollisionSoundData, Rigidbody2D>()
+				.ForEach(entity => { PostUpdateCommands.AddComponent(entity, new CollisionSoundTimer()); });
+
+			Entities.WithAll<Rigidbody2D>()
+				.ForEach(
+					(Entity entity, CollisionSoundData sound, ref CollisionSoundTimer timer) =>
+					{
+						if (timer.Time <= 0)
+						{
+							var rigidBody = EntityManager.GetComponentObject<Rigidbody2D>(entity);
+							var contactCount = rigidBody.GetContacts(contactsTmp);
+							float largestForce = 0;
+							var largestIndex = -1;
+
+							for (var j = 0; j < contactCount; j++)
+							{
+								var contact = contactsTmp[j];
+								if (contact.normalImpulse >= sound.ForceRange.x && contact.normalImpulse > largestForce)
+								{
+									largestForce = contact.normalImpulse;
+									largestIndex = j;
+								}
+							}
+
+							if (largestIndex >= 0)
+							{
+								var contact = contactsTmp[largestIndex];
+								var volume = (contact.normalImpulse - sound.ForceRange.x) / (sound.ForceRange.y - sound.ForceRange.x);
+								soundManager.PlayClip(PostUpdateCommands, sound.Sound, rigidBody.position, 0.5f, Mathf.Clamp01(volume));
+								timer.Time = 0.3f;
+							}
+						}
+						else
+						{
+							timer.Time = Mathf.Max(0, timer.Time - deltaTime);
+						}
+					});
+		}
+	}
+}