Backport AcademyStepper fix in #4532 to verified branch (#4637)

* bring in bugfix from #4532 * add meta files * remove extra file * update yamato tests * use v2 action and pin python version (#4568) * update changelog Co-authored-by: Chris Elion <chris.elion@unity3d.com>
4 年前 · 26f10c4a
--- a/.github/workflows/pre-commit.yml
+++ b/.github/workflows/pre-commit.yml
    runs-on: ubuntu-latest
    steps:
    - uses: actions/checkout@v2
-    - uses: actions/setup-python@v1
+    - uses: actions/setup-python@v2
+      with:
+        python-version: 3.7.x
    - uses: actions/setup-ruby@v1
      with:
        ruby-version: '2.6'
--- a/.yamato/com.unity.ml-agents-test.yml
+++ b/.yamato/com.unity.ml-agents-test.yml
    # 2018.4 doesn't support code-coverage
    coverageOptions:
    minCoveragePct: 0
+    # We want some scene tests to run in the DevProject, but packages there only support 2019+
+    testProject: Project
+    testProject: DevProject
+    testProject: DevProject
+    testProject: DevProject
+    testProject: DevProject
 test_platforms:
  - name: win
    type: Unity::VM
    flavor: {{ platform.flavor}}
  commands:
    - npm install upm-ci-utils@stable -g --registry https://artifactory.prd.cds.internal.unity3d.com/artifactory/api/npm/upm-npm
-    - upm-ci package test -u {{ editor.version }} --package-path com.unity.ml-agents {{ editor.coverageOptions }}
+    - upm-ci project test -u {{ editor.version }} --project-path {{ editor.testProject }} {{ editor.coverageOptions }} --extra-utr-arg "reruncount=2"
    - python3 ml-agents/tests/yamato/check_coverage_percent.py upm-ci~/test-results/ {{ editor.minCoveragePct }}
  artifacts:
    logs:
    changes:
      only:
        - "com.unity.ml-agents/**"
+        - "{{ editor.testProject }}/**"
        - "ml-agents/tests/yamato/**"
        - ".yamato/com.unity.ml-agents-test.yml"
    {% endif %}
    {% if platform.name == "win" %}
    - upm-ci package test -u "C:\build\output\Unity-Technologies\ml-agents\.Editor" --package-path com.unity.ml-agents {{ editor.coverageOptions }}
    {% else %}
-    - upm-ci package test -u {{ editor.version }} --package-path com.unity.ml-agents {{ editor.coverageOptions }}
+    - upm-ci project test -u {{ editor.version }} --project-path {{ editor.testProject }} {{ editor.coverageOptions }} --extra-utr-arg "reruncount=2"
    {% endif %}
    - python3 ml-agents/tests/yamato/check_coverage_percent.py upm-ci~/test-results/ {{ editor.minCoveragePct }}
  artifacts:
--- a/DevProject/ProjectSettings/EditorBuildSettings.asset
+++ b/DevProject/ProjectSettings/EditorBuildSettings.asset
 EditorBuildSettings:
  m_ObjectHideFlags: 0
  serializedVersion: 2
-  m_Scenes: []
+  m_Scenes:
+  - enabled: 1
+    path: Assets/ML-Agents/Scripts/Tests/Runtime/AcademyTest/AcademyStepperTestScene.unity
+    guid: 9bafc50b1e55b43b2b1ae9620f1f8311
  m_configObjects: {}
--- a/com.unity.ml-agents/CHANGELOG.md
+++ b/com.unity.ml-agents/CHANGELOG.md
 ### Bug Fixes
 #### com.unity.ml-agents (C#)
 - Fixed a bug with visual observations using .onnx model files and newer versions of Barracuda (1.1.0 or later). (#4533)
+- Fixed a bug where accessing the Academy outside of play mode would cause the Academy to get stepped multiple times when in play mode. (#4637)

 ## [1.0.5] - 2020-09-23
 ### Minor Changes
--- a/com.unity.ml-agents/Runtime/Academy.cs
+++ b/com.unity.ml-agents/Runtime/Academy.cs
    {
        void FixedUpdate()
        {
-            Academy.Instance.EnvironmentStep();
+            // Check if the stepper belongs to the current Academy and destroy it if it's not.
+            // This is to prevent from having leaked stepper from previous runs.
+            if (!Academy.IsInitialized || !Academy.Instance.IsStepperOwner(this))
+            {
+                Destroy(this.gameObject);
+            }
+            else
+            {
+                Academy.Instance.EnvironmentStep();
+            }
        }
    }

            Application.quitting += Dispose;

            LazyInitialize();
+
+#if UNITY_EDITOR
+            EditorApplication.playModeStateChanged += HandleOnPlayModeChanged;
+#endif
+
+#if UNITY_EDITOR
+        /// <summary>
+        /// Clean up the Academy when switching from edit mode to play mode
+        /// </summary>
+        /// <param name="state">State.</param>
+        void HandleOnPlayModeChanged(PlayModeStateChange state)
+        {
+            if (state == PlayModeStateChange.ExitingEditMode)
+            {
+                Dispose();
+            }
+        }
+#endif

        /// <summary>
        /// Initialize the Academy if it hasn't already been initialized.

            // Reset the Lazy instance
            s_Lazy = new Lazy<Academy>(() => new Academy());
+        }
+
+        /// <summary>
+        /// Check if the input AcademyFixedUpdateStepper belongs to this Academy.
+        /// </summary>
+        internal bool IsStepperOwner(AcademyFixedUpdateStepper stepper)
+        {
+            return GameObject.ReferenceEquals(stepper.gameObject, Academy.Instance.m_StepperObject);
        }
    }
 }
--- a/com.unity.ml-agents/Tests/Runtime/RuntimeAPITest.cs
+++ b/com.unity.ml-agents/Tests/Runtime/RuntimeAPITest.cs
        [SetUp]
        public static void Setup()
        {
+            if (Academy.IsInitialized)
+            {
+                Academy.Instance.Dispose();
+            }
            Academy.Instance.AutomaticSteppingEnabled = false;
        }

--- a/DevProject/Assets/ML-Agents.meta
+++ b/DevProject/Assets/ML-Agents.meta
+fileFormatVersion: 2
+guid: 8498a7556d0b348cbaff70bd8635db8b
+folderAsset: yes
+DefaultImporter:
+  externalObjects: {}
+  userData: 
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+  assetBundleVariant: 
--- a/DevProject/Assets/ML-Agents/Scripts.meta
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--- a/DevProject/Assets/ML-Agents/Scripts/Tests.meta
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--- a/DevProject/Assets/ML-Agents/Scripts/Tests/Runtime.meta
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--- a/DevProject/Assets/ML-Agents/Scripts/Tests/Runtime/AcademyTest.meta
+++ b/DevProject/Assets/ML-Agents/Scripts/Tests/Runtime/AcademyTest.meta
+fileFormatVersion: 2
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+folderAsset: yes
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--- a/DevProject/Assets/ML-Agents/Scripts/Tests/Runtime/AcademyTest/AcademyStepperTest.cs
+++ b/DevProject/Assets/ML-Agents/Scripts/Tests/Runtime/AcademyTest/AcademyStepperTest.cs
+using System.Collections;
+using NUnit.Framework;
+using UnityEngine.TestTools;
+using UnityEngine;
+using UnityEngine.SceneManagement;
+using Unity.MLAgents;
+#if UNITY_EDITOR
+using UnityEditor.SceneManagement;
+#endif
+
+namespace Tests
+{
+    public class AcademyStepperTest
+    {
+        [SetUp]
+        public void Setup()
+        {
+            SceneManager.LoadScene("ML-Agents/Scripts/Tests/Runtime/AcademyTest/AcademyStepperTestScene");
+        }
+
+        /// <summary>
+        /// Verify in each update, the Academy is only stepped once.
+        /// </summary>
+        [UnityTest]
+        public IEnumerator AcademyStepperCleanupPasses()
+        {
+            var academy = Academy.Instance;
+            int initStepCount = academy.TotalStepCount;
+            for (var i = 0; i < 5; i++)
+            {
+                yield return new WaitForFixedUpdate();
+                Assert.True(academy.TotalStepCount - initStepCount == i + 1);
+            }
+        }
+    }
+}
--- a/DevProject/Assets/ML-Agents/Scripts/Tests/Runtime/AcademyTest/AcademyStepperTest.cs.meta
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