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@@ -0,0 +1,486 @@
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+using System.Collections.Generic;
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+#if UNITY_EDITOR
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+using UnityEditor;
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+using UnityEditor.SceneManagement;
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+#endif
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+
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+namespace UnityEngine.AI
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+{
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+ public enum CollectObjects
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+ {
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+ All = 0,
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+ Volume = 1,
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+ Children = 2,
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+ }
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+
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+ [ExecuteAlways]
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+ [DefaultExecutionOrder(-102)]
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+ [AddComponentMenu("Navigation/NavMeshSurface", 30)]
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+ [HelpURL("https://github.com/Unity-Technologies/NavMeshComponents#documentation-draft")]
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+ public class NavMeshSurface : MonoBehaviour
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+ {
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+ [SerializeField]
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+ int m_AgentTypeID;
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+ public int agentTypeID { get { return m_AgentTypeID; } set { m_AgentTypeID = value; } }
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+
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+ [SerializeField]
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+ CollectObjects m_CollectObjects = CollectObjects.All;
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+ public CollectObjects collectObjects { get { return m_CollectObjects; } set { m_CollectObjects = value; } }
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+
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+ [SerializeField]
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+ Vector3 m_Size = new Vector3(10.0f, 10.0f, 10.0f);
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+ public Vector3 size { get { return m_Size; } set { m_Size = value; } }
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+
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+ [SerializeField]
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+ Vector3 m_Center = new Vector3(0, 2.0f, 0);
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+ public Vector3 center { get { return m_Center; } set { m_Center = value; } }
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+
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+ [SerializeField]
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+ LayerMask m_LayerMask = ~0;
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+ public LayerMask layerMask { get { return m_LayerMask; } set { m_LayerMask = value; } }
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+
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+ [SerializeField]
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+ NavMeshCollectGeometry m_UseGeometry = NavMeshCollectGeometry.RenderMeshes;
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+ public NavMeshCollectGeometry useGeometry { get { return m_UseGeometry; } set { m_UseGeometry = value; } }
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+
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+ [SerializeField]
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+ int m_DefaultArea;
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+ public int defaultArea { get { return m_DefaultArea; } set { m_DefaultArea = value; } }
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+
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+ [SerializeField]
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+ bool m_IgnoreNavMeshAgent = true;
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+ public bool ignoreNavMeshAgent { get { return m_IgnoreNavMeshAgent; } set { m_IgnoreNavMeshAgent = value; } }
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+
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+ [SerializeField]
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+ bool m_IgnoreNavMeshObstacle = true;
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+ public bool ignoreNavMeshObstacle { get { return m_IgnoreNavMeshObstacle; } set { m_IgnoreNavMeshObstacle = value; } }
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+
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+ [SerializeField]
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+ bool m_OverrideTileSize;
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+ public bool overrideTileSize { get { return m_OverrideTileSize; } set { m_OverrideTileSize = value; } }
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+ [SerializeField]
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+ int m_TileSize = 256;
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+ public int tileSize { get { return m_TileSize; } set { m_TileSize = value; } }
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+ [SerializeField]
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+ bool m_OverrideVoxelSize;
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+ public bool overrideVoxelSize { get { return m_OverrideVoxelSize; } set { m_OverrideVoxelSize = value; } }
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+ [SerializeField]
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+ float m_VoxelSize;
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+ public float voxelSize { get { return m_VoxelSize; } set { m_VoxelSize = value; } }
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+
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+ // Currently not supported advanced options
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+ [SerializeField]
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+ bool m_BuildHeightMesh;
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+ public bool buildHeightMesh { get { return m_BuildHeightMesh; } set { m_BuildHeightMesh = value; } }
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+
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+ // Reference to whole scene navmesh data asset.
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+ [UnityEngine.Serialization.FormerlySerializedAs("m_BakedNavMeshData")]
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+ [SerializeField]
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+ NavMeshData m_NavMeshData;
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+ public NavMeshData navMeshData { get { return m_NavMeshData; } set { m_NavMeshData = value; } }
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+
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+ // Do not serialize - runtime only state.
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+ NavMeshDataInstance m_NavMeshDataInstance;
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+ Vector3 m_LastPosition = Vector3.zero;
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+ Quaternion m_LastRotation = Quaternion.identity;
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+
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+ static readonly List<NavMeshSurface> s_NavMeshSurfaces = new List<NavMeshSurface>();
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+
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+ public static List<NavMeshSurface> activeSurfaces
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+ {
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+ get { return s_NavMeshSurfaces; }
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+ }
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+
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+ void OnEnable()
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+ {
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+ Register(this);
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+ AddData();
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+ }
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+
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+ void OnDisable()
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+ {
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+ RemoveData();
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+ Unregister(this);
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+ }
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+
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+ public void AddData()
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+ {
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+#if UNITY_EDITOR
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+ var isInPreviewScene = EditorSceneManager.IsPreviewSceneObject(this);
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+ var isPrefab = isInPreviewScene || EditorUtility.IsPersistent(this);
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+ if (isPrefab)
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+ {
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+ //Debug.LogFormat("NavMeshData from {0}.{1} will not be added to the NavMesh world because the gameObject is a prefab.",
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+ // gameObject.name, name);
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+ return;
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+ }
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+#endif
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+ if (m_NavMeshDataInstance.valid)
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+ return;
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+
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+ if (m_NavMeshData != null)
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+ {
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+ m_NavMeshDataInstance = NavMesh.AddNavMeshData(m_NavMeshData, transform.position, transform.rotation);
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+ m_NavMeshDataInstance.owner = this;
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+ }
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+
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+ m_LastPosition = transform.position;
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+ m_LastRotation = transform.rotation;
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+ }
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+
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+ public void RemoveData()
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+ {
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+ m_NavMeshDataInstance.Remove();
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+ m_NavMeshDataInstance = new NavMeshDataInstance();
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+ }
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+
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+ public NavMeshBuildSettings GetBuildSettings()
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+ {
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+ var buildSettings = NavMesh.GetSettingsByID(m_AgentTypeID);
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+ if (buildSettings.agentTypeID == -1)
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+ {
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+ Debug.LogWarning("No build settings for agent type ID " + agentTypeID, this);
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+ buildSettings.agentTypeID = m_AgentTypeID;
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+ }
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+
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+ if (overrideTileSize)
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+ {
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+ buildSettings.overrideTileSize = true;
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+ buildSettings.tileSize = tileSize;
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+ }
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+ if (overrideVoxelSize)
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+ {
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+ buildSettings.overrideVoxelSize = true;
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+ buildSettings.voxelSize = voxelSize;
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+ }
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+ return buildSettings;
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+ }
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+
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+ public void BuildNavMesh()
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+ {
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+ var sources = CollectSources();
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+
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+ // Use unscaled bounds - this differs in behaviour from e.g. collider components.
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+ // But is similar to reflection probe - and since navmesh data has no scaling support - it is the right choice here.
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+ var sourcesBounds = new Bounds(m_Center, Abs(m_Size));
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+ if (m_CollectObjects == CollectObjects.All || m_CollectObjects == CollectObjects.Children)
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+ {
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+ sourcesBounds = CalculateWorldBounds(sources);
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+ }
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+
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+ var data = NavMeshBuilder.BuildNavMeshData(GetBuildSettings(),
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+ sources, sourcesBounds, transform.position, transform.rotation);
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+
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+ if (data != null)
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+ {
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+ data.name = gameObject.name;
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+ RemoveData();
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+ m_NavMeshData = data;
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+ if (isActiveAndEnabled)
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+ AddData();
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+ }
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+ }
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+
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+ public AsyncOperation UpdateNavMesh(NavMeshData data)
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+ {
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+ var sources = CollectSources();
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+
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+ // Use unscaled bounds - this differs in behaviour from e.g. collider components.
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+ // But is similar to reflection probe - and since navmesh data has no scaling support - it is the right choice here.
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+ var sourcesBounds = new Bounds(m_Center, Abs(m_Size));
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+ if (m_CollectObjects == CollectObjects.All || m_CollectObjects == CollectObjects.Children)
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+ sourcesBounds = CalculateWorldBounds(sources);
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+
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+ return NavMeshBuilder.UpdateNavMeshDataAsync(data, GetBuildSettings(), sources, sourcesBounds);
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+ }
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+
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+ static void Register(NavMeshSurface surface)
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+ {
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+#if UNITY_EDITOR
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+ var isInPreviewScene = EditorSceneManager.IsPreviewSceneObject(surface);
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+ var isPrefab = isInPreviewScene || EditorUtility.IsPersistent(surface);
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+ if (isPrefab)
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+ {
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+ //Debug.LogFormat("NavMeshData from {0}.{1} will not be added to the NavMesh world because the gameObject is a prefab.",
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+ // surface.gameObject.name, surface.name);
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+ return;
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+ }
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+#endif
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+ if (s_NavMeshSurfaces.Count == 0)
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+ NavMesh.onPreUpdate += UpdateActive;
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+
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+ if (!s_NavMeshSurfaces.Contains(surface))
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+ s_NavMeshSurfaces.Add(surface);
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+ }
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+
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+ static void Unregister(NavMeshSurface surface)
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+ {
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+ s_NavMeshSurfaces.Remove(surface);
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+
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+ if (s_NavMeshSurfaces.Count == 0)
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+ NavMesh.onPreUpdate -= UpdateActive;
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+ }
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+
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+ static void UpdateActive()
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+ {
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+ for (var i = 0; i < s_NavMeshSurfaces.Count; ++i)
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+ s_NavMeshSurfaces[i].UpdateDataIfTransformChanged();
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+ }
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+
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+ void AppendModifierVolumes(ref List<NavMeshBuildSource> sources)
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+ {
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+#if UNITY_EDITOR
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+ var myStage = StageUtility.GetStageHandle(gameObject);
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+ if (!myStage.IsValid())
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+ return;
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+#endif
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+ // Modifiers
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+ List<NavMeshModifierVolume> modifiers;
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+ if (m_CollectObjects == CollectObjects.Children)
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+ {
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+ modifiers = new List<NavMeshModifierVolume>(GetComponentsInChildren<NavMeshModifierVolume>());
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+ modifiers.RemoveAll(x => !x.isActiveAndEnabled);
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+ }
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+ else
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+ {
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+ modifiers = NavMeshModifierVolume.activeModifiers;
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+ }
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+
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+ foreach (var m in modifiers)
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+ {
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+ if ((m_LayerMask & (1 << m.gameObject.layer)) == 0)
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+ continue;
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+ if (!m.AffectsAgentType(m_AgentTypeID))
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+ continue;
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+#if UNITY_EDITOR
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+ if (!myStage.Contains(m.gameObject))
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+ continue;
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+#endif
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+ var mcenter = m.transform.TransformPoint(m.center);
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+ var scale = m.transform.lossyScale;
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+ var msize = new Vector3(m.size.x * Mathf.Abs(scale.x), m.size.y * Mathf.Abs(scale.y), m.size.z * Mathf.Abs(scale.z));
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+
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+ var src = new NavMeshBuildSource();
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+ src.shape = NavMeshBuildSourceShape.ModifierBox;
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+ src.transform = Matrix4x4.TRS(mcenter, m.transform.rotation, Vector3.one);
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+ src.size = msize;
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+ src.area = m.area;
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+ sources.Add(src);
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+ }
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+ }
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+
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+ List<NavMeshBuildSource> CollectSources()
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+ {
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+ var sources = new List<NavMeshBuildSource>();
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+ var markups = new List<NavMeshBuildMarkup>();
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+
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+ List<NavMeshModifier> modifiers;
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+ if (m_CollectObjects == CollectObjects.Children)
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+ {
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+ modifiers = new List<NavMeshModifier>(GetComponentsInChildren<NavMeshModifier>());
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+ modifiers.RemoveAll(x => !x.isActiveAndEnabled);
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+ }
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+ else
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+ {
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+ modifiers = NavMeshModifier.activeModifiers;
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+ }
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+
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+ foreach (var m in modifiers)
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+ {
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+ if ((m_LayerMask & (1 << m.gameObject.layer)) == 0)
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+ continue;
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+ if (!m.AffectsAgentType(m_AgentTypeID))
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+ continue;
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+ var markup = new NavMeshBuildMarkup();
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+ markup.root = m.transform;
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+ markup.overrideArea = m.overrideArea;
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+ markup.area = m.area;
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+ markup.ignoreFromBuild = m.ignoreFromBuild;
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+ markups.Add(markup);
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+ }
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+
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+#if UNITY_EDITOR
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+ if (!EditorApplication.isPlaying)
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+ {
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+ if (m_CollectObjects == CollectObjects.All)
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+ {
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+ UnityEditor.AI.NavMeshBuilder.CollectSourcesInStage(
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+ null, m_LayerMask, m_UseGeometry, m_DefaultArea, markups, gameObject.scene, sources);
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+ }
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+ else if (m_CollectObjects == CollectObjects.Children)
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+ {
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+ UnityEditor.AI.NavMeshBuilder.CollectSourcesInStage(
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+ transform, m_LayerMask, m_UseGeometry, m_DefaultArea, markups, gameObject.scene, sources);
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+ }
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+ else if (m_CollectObjects == CollectObjects.Volume)
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+ {
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+ Matrix4x4 localToWorld = Matrix4x4.TRS(transform.position, transform.rotation, Vector3.one);
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+ var worldBounds = GetWorldBounds(localToWorld, new Bounds(m_Center, m_Size));
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+
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+ UnityEditor.AI.NavMeshBuilder.CollectSourcesInStage(
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+ worldBounds, m_LayerMask, m_UseGeometry, m_DefaultArea, markups, gameObject.scene, sources);
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+ }
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+ }
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+ else
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+#endif
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+ {
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+ if (m_CollectObjects == CollectObjects.All)
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+ {
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+ NavMeshBuilder.CollectSources(null, m_LayerMask, m_UseGeometry, m_DefaultArea, markups, sources);
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+ }
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+ else if (m_CollectObjects == CollectObjects.Children)
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+ {
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+ NavMeshBuilder.CollectSources(transform, m_LayerMask, m_UseGeometry, m_DefaultArea, markups, sources);
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+ }
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+ else if (m_CollectObjects == CollectObjects.Volume)
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+ {
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+ Matrix4x4 localToWorld = Matrix4x4.TRS(transform.position, transform.rotation, Vector3.one);
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+ var worldBounds = GetWorldBounds(localToWorld, new Bounds(m_Center, m_Size));
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+ NavMeshBuilder.CollectSources(worldBounds, m_LayerMask, m_UseGeometry, m_DefaultArea, markups, sources);
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+ }
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+ }
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+
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+ if (m_IgnoreNavMeshAgent)
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+ sources.RemoveAll((x) => (x.component != null && x.component.gameObject.GetComponent<NavMeshAgent>() != null));
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+
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+ if (m_IgnoreNavMeshObstacle)
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+ sources.RemoveAll((x) => (x.component != null && x.component.gameObject.GetComponent<NavMeshObstacle>() != null));
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+
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+ AppendModifierVolumes(ref sources);
|
|
|
|
+
|
|
|
|
+ return sources;
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ static Vector3 Abs(Vector3 v)
|
|
|
|
+ {
|
|
|
|
+ return new Vector3(Mathf.Abs(v.x), Mathf.Abs(v.y), Mathf.Abs(v.z));
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ static Bounds GetWorldBounds(Matrix4x4 mat, Bounds bounds)
|
|
|
|
+ {
|
|
|
|
+ var absAxisX = Abs(mat.MultiplyVector(Vector3.right));
|
|
|
|
+ var absAxisY = Abs(mat.MultiplyVector(Vector3.up));
|
|
|
|
+ var absAxisZ = Abs(mat.MultiplyVector(Vector3.forward));
|
|
|
|
+ var worldPosition = mat.MultiplyPoint(bounds.center);
|
|
|
|
+ var worldSize = absAxisX * bounds.size.x + absAxisY * bounds.size.y + absAxisZ * bounds.size.z;
|
|
|
|
+ return new Bounds(worldPosition, worldSize);
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ Bounds CalculateWorldBounds(List<NavMeshBuildSource> sources)
|
|
|
|
+ {
|
|
|
|
+ // Use the unscaled matrix for the NavMeshSurface
|
|
|
|
+ Matrix4x4 worldToLocal = Matrix4x4.TRS(transform.position, transform.rotation, Vector3.one);
|
|
|
|
+ worldToLocal = worldToLocal.inverse;
|
|
|
|
+
|
|
|
|
+ var result = new Bounds();
|
|
|
|
+ foreach (var src in sources)
|
|
|
|
+ {
|
|
|
|
+ switch (src.shape)
|
|
|
|
+ {
|
|
|
|
+ case NavMeshBuildSourceShape.Mesh:
|
|
|
|
+ {
|
|
|
|
+ var m = src.sourceObject as Mesh;
|
|
|
|
+ result.Encapsulate(GetWorldBounds(worldToLocal * src.transform, m.bounds));
|
|
|
|
+ break;
|
|
|
|
+ }
|
|
|
|
+ case NavMeshBuildSourceShape.Terrain:
|
|
|
|
+ {
|
|
|
|
+ // Terrain pivot is lower/left corner - shift bounds accordingly
|
|
|
|
+ var t = src.sourceObject as TerrainData;
|
|
|
|
+ result.Encapsulate(GetWorldBounds(worldToLocal * src.transform, new Bounds(0.5f * t.size, t.size)));
|
|
|
|
+ break;
|
|
|
|
+ }
|
|
|
|
+ case NavMeshBuildSourceShape.Box:
|
|
|
|
+ case NavMeshBuildSourceShape.Sphere:
|
|
|
|
+ case NavMeshBuildSourceShape.Capsule:
|
|
|
|
+ case NavMeshBuildSourceShape.ModifierBox:
|
|
|
|
+ result.Encapsulate(GetWorldBounds(worldToLocal * src.transform, new Bounds(Vector3.zero, src.size)));
|
|
|
|
+ break;
|
|
|
|
+ }
|
|
|
|
+ }
|
|
|
|
+ // Inflate the bounds a bit to avoid clipping co-planar sources
|
|
|
|
+ result.Expand(0.1f);
|
|
|
|
+ return result;
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ bool HasTransformChanged()
|
|
|
|
+ {
|
|
|
|
+ if (m_LastPosition != transform.position) return true;
|
|
|
|
+ if (m_LastRotation != transform.rotation) return true;
|
|
|
|
+ return false;
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ void UpdateDataIfTransformChanged()
|
|
|
|
+ {
|
|
|
|
+ if (HasTransformChanged())
|
|
|
|
+ {
|
|
|
|
+ RemoveData();
|
|
|
|
+ AddData();
|
|
|
|
+ }
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+#if UNITY_EDITOR
|
|
|
|
+ bool UnshareNavMeshAsset()
|
|
|
|
+ {
|
|
|
|
+ // Nothing to unshare
|
|
|
|
+ if (m_NavMeshData == null)
|
|
|
|
+ return false;
|
|
|
|
+
|
|
|
|
+ // Prefab parent owns the asset reference
|
|
|
|
+ var isInPreviewScene = EditorSceneManager.IsPreviewSceneObject(this);
|
|
|
|
+ var isPersistentObject = EditorUtility.IsPersistent(this);
|
|
|
|
+ if (isInPreviewScene || isPersistentObject)
|
|
|
|
+ return false;
|
|
|
|
+
|
|
|
|
+ // An instance can share asset reference only with its prefab parent
|
|
|
|
+ var prefab = UnityEditor.PrefabUtility.GetCorrespondingObjectFromSource(this) as NavMeshSurface;
|
|
|
|
+ if (prefab != null && prefab.navMeshData == navMeshData)
|
|
|
|
+ return false;
|
|
|
|
+
|
|
|
|
+ // Don't allow referencing an asset that's assigned to another surface
|
|
|
|
+ for (var i = 0; i < s_NavMeshSurfaces.Count; ++i)
|
|
|
|
+ {
|
|
|
|
+ var surface = s_NavMeshSurfaces[i];
|
|
|
|
+ if (surface != this && surface.m_NavMeshData == m_NavMeshData)
|
|
|
|
+ return true;
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ // Asset is not referenced by known surfaces
|
|
|
|
+ return false;
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ void OnValidate()
|
|
|
|
+ {
|
|
|
|
+ if (UnshareNavMeshAsset())
|
|
|
|
+ {
|
|
|
|
+ Debug.LogWarning("Duplicating NavMeshSurface does not duplicate the referenced navmesh data", this);
|
|
|
|
+ m_NavMeshData = null;
|
|
|
|
+ }
|
|
|
|
+
|
|
|
|
+ var settings = NavMesh.GetSettingsByID(m_AgentTypeID);
|
|
|
|
+ if (settings.agentTypeID != -1)
|
|
|
|
+ {
|
|
|
|
+ // When unchecking the override control, revert to automatic value.
|
|
|
|
+ const float kMinVoxelSize = 0.01f;
|
|
|
|
+ if (!m_OverrideVoxelSize)
|
|
|
|
+ m_VoxelSize = settings.agentRadius / 3.0f;
|
|
|
|
+ if (m_VoxelSize < kMinVoxelSize)
|
|
|
|
+ m_VoxelSize = kMinVoxelSize;
|
|
|
|
+
|
|
|
|
+ // When unchecking the override control, revert to default value.
|
|
|
|
+ const int kMinTileSize = 16;
|
|
|
|
+ const int kMaxTileSize = 1024;
|
|
|
|
+ const int kDefaultTileSize = 256;
|
|
|
|
+
|
|
|
|
+ if (!m_OverrideTileSize)
|
|
|
|
+ m_TileSize = kDefaultTileSize;
|
|
|
|
+ // Make sure tilesize is in sane range.
|
|
|
|
+ if (m_TileSize < kMinTileSize)
|
|
|
|
+ m_TileSize = kMinTileSize;
|
|
|
|
+ if (m_TileSize > kMaxTileSize)
|
|
|
|
+ m_TileSize = kMaxTileSize;
|
|
|
|
+ }
|
|
|
|
+ }
|
|
|
|
+#endif
|
|
|
|
+ }
|
|
|
|
+}
|