Initial Commit

Assets/Scripts/Systems/Actor/ActorMeleeSystem.cs

@@ -0,0 +1,93 @@
+using Cinemachine;
+using System;
+using Unity.Entities;
+using UnityEngine;
+using Zenject;
+
+namespace DefaultNamespace
+{
+	[UpdateInGroup(typeof(PresentationSystemGroup)), UpdateBefore(typeof(ActorAnimationEventResetSystem))]
+	public class ActorMeleeSystem : InjectableComponentSystem
+	{
+		[Serializable]
+		public class Settings
+		{
+			public ParticleSystem BloodParticles;
+			public CinemachineImpulseSource HitImpulse;
+			public float HitImpulseSize;
+			public SoundLibrary MeleeHitSounds;
+			public CinemachineImpulseSource MeleeImpulse;
+			public float MeleeImpulseSize;
+		}
+
+		//[Inject] private MeleeActorGroup meleeActorGroup;
+		[Inject] private readonly Settings settings;
+		[Inject] private readonly SoundManager soundManager;
+
+		protected override void OnSystemUpdate()
+		{
+			Entities.WithAll<Rigidbody2D>()
+				.ForEach(
+					(Entity entity, ActorMeleeSharedData meleeShared, ref ActorAnimationEventData e, ref ActorMeleeData melee) =>
+					{
+						var rigidBody = EntityManager.GetComponentObject<Rigidbody2D>(entity);
+						melee.MeleeTimer = Mathf.Max(0, melee.MeleeTimer - Time.DeltaTime);
+
+						if (e.Melee)
+						{
+							var center = rigidBody.position;
+							if (EntityManager.TryGetComponentData<AimCenterData>(entity, out var aimCenter))
+							{
+								center += aimCenter.Offset;
+							}
+							var hits = Physics2D.CircleCastAll(
+								center,
+								meleeShared.Range,
+								rigidBody.transform.right,
+								Time.DeltaTime,
+								meleeShared.MeleeMask);
+							var hitFlag = false;
+							foreach (var hit in hits)
+							{
+								var angle = Vector2.Angle(rigidBody.transform.right, hit.normal);
+								if (angle <= meleeShared.Angle * 0.5f)
+								{
+									var actorFacade = hit.transform.GetComponentInParent<ActorFacade>();
+									if (actorFacade != null &&
+									    entity != actorFacade.Entity &&
+									    EntityManager.HasComponent<ActorData>(actorFacade.Entity))
+									{
+										var enemyData = EntityManager.GetComponentData<ActorData>(actorFacade.Entity);
+										enemyData.Health = Mathf.Max(0, enemyData.Health - meleeShared.Damage);
+										if (enemyData.Health <= 0)
+										{
+											PostUpdateCommands.PostEntityEvent(
+												EntityManager,
+												actorFacade.Entity,
+												new ActorDeathData { Direction = -hit.normal, Force = meleeShared.Damage });
+										}
+										hit.rigidbody.AddForce(-hit.normal * meleeShared.Knockback, ForceMode2D.Impulse);
+										EntityManager.SetComponentData(actorFacade.Entity, enemyData);
+										soundManager.PlayClip(PostUpdateCommands, settings.MeleeHitSounds, hit.point);
+										settings.BloodParticles.Emit(
+											new ParticleSystem.EmitParams
+											{
+												position = hit.point, rotation = Vector2.SignedAngle(Vector2.up, hit.normal)
+											},
+											1);
+										hitFlag = true;
+										settings.HitImpulse.GenerateImpulseAt(hit.point, Vector3.one * settings.HitImpulseSize);
+										break;
+									}
+								}
+							}
+
+							if (!hitFlag)
+							{
+								settings.HitImpulse.GenerateImpulse(Vector3.one * settings.MeleeImpulseSize);
+							}
+						}
+					});
+		}
+	}
+}