#3 feat: Unity AR foundation

Assets/Managers/ARSession/AR Session.prefab

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Assets/Prefabs/CompatibilityChecker/CompatibilityChecker.prefab → Assets/Managers/CompatibilityChecker/Compatibility Checker.prefab

@@ -9,8 +9,9 @@ GameObject:
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+  m_Name: Compatibility Checker
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Assets/Prefabs/CompatibilityChecker/CompatibilityChecker.cs → Assets/Managers/CompatibilityChecker/CompatibilityChecker.cs

@@ -1,6 +1,5 @@
 using System;
 using System.Collections;
-using System.Collections.Generic;
 using UnityEngine;
 using UnityEngine.XR.ARFoundation;
 
@@ -21,26 +20,46 @@ public enum DeviceSupport
     void Start()
     {
         _arSession = FindObjectOfType<ARSession>();
-        if (_arSession)
+        if (_arSession == null)
         {
             throw new ArgumentException("An ARSession needs to exist for the CompatibilityChecker");
         }
+
+        StartCoroutine(CheckSupportForCurrentDevice());
     }
 
-    public IEnumerator CheckForARSupport(Action<ARSessionState> OnCheckCompleted) {
+    public IEnumerator CheckSupportForCurrentDevice() {
 
+        // AR
         if ((ARSession.state == ARSessionState.None) ||
             (ARSession.state == ARSessionState.CheckingAvailability))
         {
             yield return ARSession.CheckAvailability();
         }
-        OnCheckCompleted(ARSession.state);
+
+        // VR
+        // TODO
+
+        if (ARSession.state == ARSessionState.Unsupported)
+        {
+            _supportedDevice = DeviceSupport.DESKTOP;
+        }
+        else
+        {
+            _supportedDevice = DeviceSupport.AR;
+        }
+
+        _listeners.Invoke(_supportedDevice);
     }
 
     public static void AddListener(Action<DeviceSupport> OnResult)
     {
-        if (_supportedDevice == CompatibilityChecker.DeviceSupport.UNKNOWN)
-            _listeners += OnResult;
+        if (_supportedDevice != CompatibilityChecker.DeviceSupport.UNKNOWN)
+        {
+            OnResult.Invoke(_supportedDevice);
+            return;
+        }
+        _listeners += OnResult;
     }
 }
 

Assets/Prefabs/LevelPositionManager/LevelPositionManager.prefab → Assets/Managers/LevelPlacementManager/Level Placement Manager.prefab

@@ -1,46 +1,46 @@
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Assets/Managers/LevelPlacementManager/LevelPlacementManager.cs

@@ -0,0 +1,89 @@
+using System.Collections;
+using System.Collections.Generic;
+using UnityEngine;
+using UnityEngine.SceneManagement;
+using UnityEngine.XR.ARFoundation;
+using UnityEngine.XR.ARSubsystems;
+using UnityEngine.InputSystem;
+
+public class LevelPlacementManager : MonoBehaviour
+{
+    [SerializeField] GameObject _levelPlaceholder;
+
+    private ARRaycastManager _arRaycastManager;
+
+    private List<RaycastHit> _raycastHits;
+
+    private LevelPlacementData _levelPlacementData;
+
+    private Camera _arCamera;
+
+    private Pose _latestPlaneHit;
+
+    // Start is called before the first frame update
+    void Start()
+    {
+        CompatibilityChecker.AddListener(delegate (CompatibilityChecker.DeviceSupport supportedDevice)  {
+            if (supportedDevice != CompatibilityChecker.DeviceSupport.AR) {
+                Destroy(this.gameObject);
+                return;
+            }
+
+            this._arRaycastManager = FindObjectOfType<ARRaycastManager>();
+            this._arCamera = FindObjectOfType<Camera>();
+            this._levelPlacementData = FindObjectOfType<LevelPlacementData>();
+        });
+    }
+
+    // Update is called once per frame
+    void Update()
+    {
+        if (!SetupManager.IsSetupCompleted) return;
+        this.LookForPlane();
+        this.RenderLevelPlacementPlaceholder();
+        this.CheckForUserInput();
+    }
+
+    private void LookForPlane()
+    {
+        Vector2 screenCenter = _arCamera.ViewportToScreenPoint(new Vector3(0.5f, 0.5f));
+        var hits = new List<ARRaycastHit>();
+        this._arRaycastManager.Raycast(screenCenter, hits, TrackableType.PlaneEstimated);
+
+        if (hits.Count == 0) return;
+        Vector3 cameraForward = _arCamera.transform.forward;
+        Vector3 cameraBearing = new Vector3(cameraForward.x, 0, cameraForward.z);
+        Quaternion hitRotation = Quaternion.LookRotation(cameraBearing);
+
+        this._latestPlaneHit = new Pose(hits[0].pose.position, hitRotation);
+    }
+
+    private void RenderLevelPlacementPlaceholder()
+    {
+        if (this._latestPlaneHit == null) return;
+        _levelPlaceholder.transform.SetPositionAndRotation(this._latestPlaneHit.position, this._latestPlaneHit.rotation);
+    }
+
+    private void CheckForUserInput()
+    {
+        if (this._latestPlaneHit == null) return;
+        bool tappingScreenOnceWithOneFinger = Touchscreen.current.IsPressed(0);
+        if (tappingScreenOnceWithOneFinger)
+        {
+            ChoosePositionAndRotationOfLevels(_latestPlaneHit);
+        }
+    }
+
+    private void ChoosePositionAndRotationOfLevels(Pose pose)
+    {
+        _levelPlacementData.SetLevelPose(pose);
+        Debug.Log("Level Position Set");
+        MoveToNextScene();
+    }
+
+    private void MoveToNextScene()
+    {
+        // TODO, create a level management system
+        SceneManager.LoadScene("SampleScene");
+    }
+}

Assets/Managers/LevelPlacmentData/Level Placement Data.prefab

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