adds an end-of-frame system group and tooltips for some Bootstrapper …

…fields

Runtime/Scripts/MonoBehaviours/Bootstrapper.cs

@@ -39,20 +39,28 @@ public class Bootstrapper : WorldBehaviour {
         private readonly List<EntityArchetype> _archetypes = new List<EntityArchetype>();
         private readonly Dictionary<ArchetypeProducer, int> _archetypeProducerIndices = new Dictionary<ArchetypeProducer, int>();
 
+        [Tooltip("Systems that execute before each simulation tick. (executed 0-n times per frame)")]
         [SerializeField]
         private SystemTypeReference[] _simulationResetSystems = new SystemTypeReference[0];
 
+        [Tooltip("Systems that execute during each simulation tick. (executed 0-n times per frame)")]
         [FormerlySerializedAs("_simulationSystems")]
         [SerializeField]
         private SystemTypeReference[] _mainSimulationSystems = new SystemTypeReference[0];
 
+        [Tooltip("Systems that execute before the ManagedMonoBehaviours. (executed once per frame)")]
         [FormerlySerializedAs("_presentationSystems")]
         [SerializeField]
         private SystemTypeReference[] _presentationPreUpdateSystems = new SystemTypeReference[0];
 
+        [Tooltip("Systems that execute after the ManagedMonoBehaviours. (executed once per frame)")]
         [SerializeField]
         private SystemTypeReference[] _presentationPostUpdateSystems = new SystemTypeReference[0];
 
+        [Tooltip("Systems that execute at the end of each frame. Useful for systems that serialize the world. (executed once per frame)")]
+        [SerializeField]
+        private SystemTypeReference[] _endOfFrameSystems = new SystemTypeReference[0];
+
         protected virtual void Start() {
             // set up simulation systems
             SimulationSystemGroup simGroup = AddSystem(typeof(FixedUpdate), new SimulationSystemGroup());
@@ -109,6 +117,13 @@ protected virtual void Start() {
                 AddSystem(presGroup, new PrefabSpawnSystem(this));
 
                 AddSystem(presGroup, new EndOfFrameEntityCommandBufferSystem());
+
+                EndOfFrameSystemGroup endOfFrameGroup = AddSystem(presGroup, new EndOfFrameSystemGroup());
+                {
+                    foreach (SystemTypeReference systemTypeReference in _endOfFrameSystems) {
+                        GetOrCreateSystem(endOfFrameGroup, systemTypeReference.SystemType);
+                    }
+                }
             }
 
             // set up archetypes

Runtime/Scripts/Systems/Groups/EndOfFrameSystemGroup.cs

@@ -0,0 +1,3 @@
+namespace Software10101.DOTS.Systems.Groups {
+    internal sealed class EndOfFrameSystemGroup : ListComponentSystemGroup { }
+}

package.json

@@ -1,7 +1,7 @@
 {
   "name": "com.10101software.dots.hybridsimulation",
   "description": "A framework for using FixedUpdate in a simulation world which is linked to a GameObject-based presentation layer.",
-  "version": "0.7.5-preview.1",
+  "version": "0.7.5",
   "unity": "2020.2",
   "displayName": "DOTS Hybrid Simulation Worlds",
   "dependencies": {