[ECSLearn] EBS 如果属于fixgroup时，可以控制刷新帧率 FixedStepSimulationSystemGroup

qbzjs · Aug 13, 2021 · 143f068 · 143f068
1 parent 9ba9c43
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Showing 7 changed files with 25 additions and 12 deletions.
diff --git a/...yComponentSystemSamples/ECSSamples/Assets/Advanced/BlobAssetSimple/SimpleAnimationBlob.cs b/...yComponentSystemSamples/ECSSamples/Assets/Advanced/BlobAssetSimple/SimpleAnimationBlob.cs
@@ -7,6 +7,13 @@
 /// Very simple animation curve blob data that uses linear interpolation at fixed intervals.
 /// Blob data is constructed from a UnityEngine.AnimationCurve
 /// </summary>
+///
+/*
+ *
+ * Blob assets –从技术上讲，它不是“component”，但您可以使用Blob assets来存储数据。
+ * Blob assets可以由一个或多个component使用BlobAssetReference进行引用，并且他是不可变的。
+ * 您可以使用Blob assets在资产之间共享数据并访问C＃ jobs中的数据。
+ */
 public struct SimpleAnimationBlob
 {
     BlobArray<float> Keys;

diff --git a/...temSamples/ECSSamples/Assets/Advanced/FixedTimestepSystemUpdate/FixedRateSpawnerSystem.cs b/...temSamples/ECSSamples/Assets/Advanced/FixedTimestepSystemUpdate/FixedRateSpawnerSystem.cs
@@ -18,6 +18,7 @@ public partial class FixedRateSpawnerSystem : SystemBase
         private EndFixedStepSimulationEntityCommandBufferSystem ecbSystem;
         protected override void OnCreate()
         {
+            //EndFixedStepSimulationEntityCommandBufferSystem 是属于FixedStepSimulationSystemGroup里的
             ecbSystem = World.GetExistingSystem<EndFixedStepSimulationEntityCommandBufferSystem>();
         }
 

diff --git a/...stemSamples/ECSSamples/Assets/Advanced/FixedTimestepSystemUpdate/MoveProjectilesSystem.cs b/...stemSamples/ECSSamples/Assets/Advanced/FixedTimestepSystemUpdate/MoveProjectilesSystem.cs
@@ -29,6 +29,7 @@ protected override void OnUpdate()
                     float aliveTime = (timeSinceLoad - projectile.SpawnTime);
                     if (aliveTime > 5.0f)
                     {
+                        //销毁会回到主线程
                         ecb.DestroyEntity(entityInQueryIndex, projectileEntity);
                     }
                     translation.Value.x = projectile.SpawnPos.x + aliveTime * projectileSpeed;

diff --git a/...ponentSystemSamples/ECSSamples/Assets/Advanced/FixedTimestepSystemUpdate/SliderHandler.cs b/...ponentSystemSamples/ECSSamples/Assets/Advanced/FixedTimestepSystemUpdate/SliderHandler.cs
@@ -10,6 +10,8 @@ public class SliderHandler : MonoBehaviour
     public void OnSliderChange()
     {
         float fixedFps = GetComponent<Slider>().value;
+
+        //设定fixedgroup的帧率
         var fixedSimulationGroup = World.DefaultGameObjectInjectionWorld?.GetExistingSystem<FixedStepSimulationSystemGroup>();
         if (fixedSimulationGroup != null)
         {

diff --git a/...ples/ECSSamples/Assets/Advanced/FixedTimestepSystemUpdate/VariableRateSpawnerAuthoring.cs b/...ples/ECSSamples/Assets/Advanced/FixedTimestepSystemUpdate/VariableRateSpawnerAuthoring.cs
@@ -14,7 +14,7 @@ public void Convert(Entity entity, EntityManager dstManager, GameObjectConversio
         {
             var spawnerData = new VariableRateSpawner
             {
-                Prefab = conversionSystem.GetPrimaryEntity(projectilePrefab),
+                Prefab = conversionSystem.GetPrimaryEntity(projectilePrefab), //把prefab转成一个entity
                 SpawnPos = transform.position,
             };
             dstManager.AddComponentData(entity, spawnerData);

diff --git a/...Samples/ECSSamples/Assets/Advanced/FixedTimestepSystemUpdate/VariableRateSpawnerSystem.cs b/...Samples/ECSSamples/Assets/Advanced/FixedTimestepSystemUpdate/VariableRateSpawnerSystem.cs
@@ -20,12 +20,14 @@ protected override void OnCreate()
 
         protected override void OnUpdate()
         {
-            float spawnTime = (float)Time.ElapsedTime;
+            //只要对应的entity在，每一帧都会执行
+            float spawnTime = (float)Time.ElapsedTime; //Time.ElapsedTime 从world创建开始到现在的时间
             var ecb = ecbSystem.CreateCommandBuffer();
             Entities
                 .WithName("VariableRateSpawner")
                 .ForEach((in VariableRateSpawner spawner) =>
                 {
+                    //代码逻辑在子线程执行，但是最后的创建entity会回到主线程
                     var projectileEntity = ecb.Instantiate(spawner.Prefab);
                     var spawnPos = spawner.SpawnPos;
                     spawnPos.y += 0.3f * math.sin(5.0f * spawnTime);

diff --git a/EntityComponentSystemSamples/ECSSamples/UserSettings/EditorUserSettings.asset b/EntityComponentSystemSamples/ECSSamples/UserSettings/EditorUserSettings.asset
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