486 lines
19 KiB
C#
486 lines
19 KiB
C#
using System.Collections.Generic;
|
|
#if UNITY_EDITOR
|
|
using UnityEditor;
|
|
using UnityEditor.SceneManagement;
|
|
#endif
|
|
|
|
namespace UnityEngine.AI
|
|
{
|
|
public enum CollectObjects
|
|
{
|
|
All = 0,
|
|
Volume = 1,
|
|
Children = 2,
|
|
}
|
|
|
|
[ExecuteAlways]
|
|
[DefaultExecutionOrder(-102)]
|
|
[AddComponentMenu("Navigation/NavMeshSurface", 30)]
|
|
[HelpURL("https://github.com/Unity-Technologies/NavMeshComponents#documentation-draft")]
|
|
public class NavMeshSurface : MonoBehaviour
|
|
{
|
|
[SerializeField]
|
|
int m_AgentTypeID;
|
|
public int agentTypeID { get { return m_AgentTypeID; } set { m_AgentTypeID = value; } }
|
|
|
|
[SerializeField]
|
|
CollectObjects m_CollectObjects = CollectObjects.All;
|
|
public CollectObjects collectObjects { get { return m_CollectObjects; } set { m_CollectObjects = value; } }
|
|
|
|
[SerializeField]
|
|
Vector3 m_Size = new Vector3(10.0f, 10.0f, 10.0f);
|
|
public Vector3 size { get { return m_Size; } set { m_Size = value; } }
|
|
|
|
[SerializeField]
|
|
Vector3 m_Center = new Vector3(0, 2.0f, 0);
|
|
public Vector3 center { get { return m_Center; } set { m_Center = value; } }
|
|
|
|
[SerializeField]
|
|
LayerMask m_LayerMask = ~0;
|
|
public LayerMask layerMask { get { return m_LayerMask; } set { m_LayerMask = value; } }
|
|
|
|
[SerializeField]
|
|
NavMeshCollectGeometry m_UseGeometry = NavMeshCollectGeometry.RenderMeshes;
|
|
public NavMeshCollectGeometry useGeometry { get { return m_UseGeometry; } set { m_UseGeometry = value; } }
|
|
|
|
[SerializeField]
|
|
int m_DefaultArea;
|
|
public int defaultArea { get { return m_DefaultArea; } set { m_DefaultArea = value; } }
|
|
|
|
[SerializeField]
|
|
bool m_IgnoreNavMeshAgent = true;
|
|
public bool ignoreNavMeshAgent { get { return m_IgnoreNavMeshAgent; } set { m_IgnoreNavMeshAgent = value; } }
|
|
|
|
[SerializeField]
|
|
bool m_IgnoreNavMeshObstacle = true;
|
|
public bool ignoreNavMeshObstacle { get { return m_IgnoreNavMeshObstacle; } set { m_IgnoreNavMeshObstacle = value; } }
|
|
|
|
[SerializeField]
|
|
bool m_OverrideTileSize;
|
|
public bool overrideTileSize { get { return m_OverrideTileSize; } set { m_OverrideTileSize = value; } }
|
|
[SerializeField]
|
|
int m_TileSize = 256;
|
|
public int tileSize { get { return m_TileSize; } set { m_TileSize = value; } }
|
|
[SerializeField]
|
|
bool m_OverrideVoxelSize;
|
|
public bool overrideVoxelSize { get { return m_OverrideVoxelSize; } set { m_OverrideVoxelSize = value; } }
|
|
[SerializeField]
|
|
float m_VoxelSize;
|
|
public float voxelSize { get { return m_VoxelSize; } set { m_VoxelSize = value; } }
|
|
|
|
// Currently not supported advanced options
|
|
[SerializeField]
|
|
bool m_BuildHeightMesh;
|
|
public bool buildHeightMesh { get { return m_BuildHeightMesh; } set { m_BuildHeightMesh = value; } }
|
|
|
|
// Reference to whole scene navmesh data asset.
|
|
[UnityEngine.Serialization.FormerlySerializedAs("m_BakedNavMeshData")]
|
|
[SerializeField]
|
|
NavMeshData m_NavMeshData;
|
|
public NavMeshData navMeshData { get { return m_NavMeshData; } set { m_NavMeshData = value; } }
|
|
|
|
// Do not serialize - runtime only state.
|
|
NavMeshDataInstance m_NavMeshDataInstance;
|
|
Vector3 m_LastPosition = Vector3.zero;
|
|
Quaternion m_LastRotation = Quaternion.identity;
|
|
|
|
static readonly List<NavMeshSurface> s_NavMeshSurfaces = new List<NavMeshSurface>();
|
|
|
|
public static List<NavMeshSurface> activeSurfaces
|
|
{
|
|
get { return s_NavMeshSurfaces; }
|
|
}
|
|
|
|
void OnEnable()
|
|
{
|
|
Register(this);
|
|
AddData();
|
|
}
|
|
|
|
void OnDisable()
|
|
{
|
|
RemoveData();
|
|
Unregister(this);
|
|
}
|
|
|
|
public void AddData()
|
|
{
|
|
#if UNITY_EDITOR
|
|
var isInPreviewScene = EditorSceneManager.IsPreviewSceneObject(this);
|
|
var isPrefab = isInPreviewScene || EditorUtility.IsPersistent(this);
|
|
if (isPrefab)
|
|
{
|
|
//Debug.LogFormat("NavMeshData from {0}.{1} will not be added to the NavMesh world because the gameObject is a prefab.",
|
|
// gameObject.name, name);
|
|
return;
|
|
}
|
|
#endif
|
|
if (m_NavMeshDataInstance.valid)
|
|
return;
|
|
|
|
if (m_NavMeshData != null)
|
|
{
|
|
m_NavMeshDataInstance = NavMesh.AddNavMeshData(m_NavMeshData, transform.position, transform.rotation);
|
|
m_NavMeshDataInstance.owner = this;
|
|
}
|
|
|
|
m_LastPosition = transform.position;
|
|
m_LastRotation = transform.rotation;
|
|
}
|
|
|
|
public void RemoveData()
|
|
{
|
|
m_NavMeshDataInstance.Remove();
|
|
m_NavMeshDataInstance = new NavMeshDataInstance();
|
|
}
|
|
|
|
public NavMeshBuildSettings GetBuildSettings()
|
|
{
|
|
var buildSettings = NavMesh.GetSettingsByID(m_AgentTypeID);
|
|
if (buildSettings.agentTypeID == -1)
|
|
{
|
|
Debug.LogWarning("No build settings for agent type ID " + agentTypeID, this);
|
|
buildSettings.agentTypeID = m_AgentTypeID;
|
|
}
|
|
|
|
if (overrideTileSize)
|
|
{
|
|
buildSettings.overrideTileSize = true;
|
|
buildSettings.tileSize = tileSize;
|
|
}
|
|
if (overrideVoxelSize)
|
|
{
|
|
buildSettings.overrideVoxelSize = true;
|
|
buildSettings.voxelSize = voxelSize;
|
|
}
|
|
return buildSettings;
|
|
}
|
|
|
|
public void BuildNavMesh()
|
|
{
|
|
var sources = CollectSources();
|
|
|
|
// Use unscaled bounds - this differs in behaviour from e.g. collider components.
|
|
// But is similar to reflection probe - and since navmesh data has no scaling support - it is the right choice here.
|
|
var sourcesBounds = new Bounds(m_Center, Abs(m_Size));
|
|
if (m_CollectObjects == CollectObjects.All || m_CollectObjects == CollectObjects.Children)
|
|
{
|
|
sourcesBounds = CalculateWorldBounds(sources);
|
|
}
|
|
|
|
var data = NavMeshBuilder.BuildNavMeshData(GetBuildSettings(),
|
|
sources, sourcesBounds, transform.position, transform.rotation);
|
|
|
|
if (data != null)
|
|
{
|
|
data.name = gameObject.name;
|
|
RemoveData();
|
|
m_NavMeshData = data;
|
|
if (isActiveAndEnabled)
|
|
AddData();
|
|
}
|
|
}
|
|
|
|
public AsyncOperation UpdateNavMesh(NavMeshData data)
|
|
{
|
|
var sources = CollectSources();
|
|
|
|
// Use unscaled bounds - this differs in behaviour from e.g. collider components.
|
|
// But is similar to reflection probe - and since navmesh data has no scaling support - it is the right choice here.
|
|
var sourcesBounds = new Bounds(m_Center, Abs(m_Size));
|
|
if (m_CollectObjects == CollectObjects.All || m_CollectObjects == CollectObjects.Children)
|
|
sourcesBounds = CalculateWorldBounds(sources);
|
|
|
|
return NavMeshBuilder.UpdateNavMeshDataAsync(data, GetBuildSettings(), sources, sourcesBounds);
|
|
}
|
|
|
|
static void Register(NavMeshSurface surface)
|
|
{
|
|
#if UNITY_EDITOR
|
|
var isInPreviewScene = EditorSceneManager.IsPreviewSceneObject(surface);
|
|
var isPrefab = isInPreviewScene || EditorUtility.IsPersistent(surface);
|
|
if (isPrefab)
|
|
{
|
|
//Debug.LogFormat("NavMeshData from {0}.{1} will not be added to the NavMesh world because the gameObject is a prefab.",
|
|
// surface.gameObject.name, surface.name);
|
|
return;
|
|
}
|
|
#endif
|
|
if (s_NavMeshSurfaces.Count == 0)
|
|
NavMesh.onPreUpdate += UpdateActive;
|
|
|
|
if (!s_NavMeshSurfaces.Contains(surface))
|
|
s_NavMeshSurfaces.Add(surface);
|
|
}
|
|
|
|
static void Unregister(NavMeshSurface surface)
|
|
{
|
|
s_NavMeshSurfaces.Remove(surface);
|
|
|
|
if (s_NavMeshSurfaces.Count == 0)
|
|
NavMesh.onPreUpdate -= UpdateActive;
|
|
}
|
|
|
|
static void UpdateActive()
|
|
{
|
|
for (var i = 0; i < s_NavMeshSurfaces.Count; ++i)
|
|
s_NavMeshSurfaces[i].UpdateDataIfTransformChanged();
|
|
}
|
|
|
|
void AppendModifierVolumes(ref List<NavMeshBuildSource> sources)
|
|
{
|
|
#if UNITY_EDITOR
|
|
var myStage = StageUtility.GetStageHandle(gameObject);
|
|
if (!myStage.IsValid())
|
|
return;
|
|
#endif
|
|
// Modifiers
|
|
List<NavMeshModifierVolume> modifiers;
|
|
if (m_CollectObjects == CollectObjects.Children)
|
|
{
|
|
modifiers = new List<NavMeshModifierVolume>(GetComponentsInChildren<NavMeshModifierVolume>());
|
|
modifiers.RemoveAll(x => !x.isActiveAndEnabled);
|
|
}
|
|
else
|
|
{
|
|
modifiers = NavMeshModifierVolume.activeModifiers;
|
|
}
|
|
|
|
foreach (var m in modifiers)
|
|
{
|
|
if ((m_LayerMask & (1 << m.gameObject.layer)) == 0)
|
|
continue;
|
|
if (!m.AffectsAgentType(m_AgentTypeID))
|
|
continue;
|
|
#if UNITY_EDITOR
|
|
if (!myStage.Contains(m.gameObject))
|
|
continue;
|
|
#endif
|
|
var mcenter = m.transform.TransformPoint(m.center);
|
|
var scale = m.transform.lossyScale;
|
|
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));
|
|
|
|
var src = new NavMeshBuildSource();
|
|
src.shape = NavMeshBuildSourceShape.ModifierBox;
|
|
src.transform = Matrix4x4.TRS(mcenter, m.transform.rotation, Vector3.one);
|
|
src.size = msize;
|
|
src.area = m.area;
|
|
sources.Add(src);
|
|
}
|
|
}
|
|
|
|
List<NavMeshBuildSource> CollectSources()
|
|
{
|
|
var sources = new List<NavMeshBuildSource>();
|
|
var markups = new List<NavMeshBuildMarkup>();
|
|
|
|
List<NavMeshModifier> modifiers;
|
|
if (m_CollectObjects == CollectObjects.Children)
|
|
{
|
|
modifiers = new List<NavMeshModifier>(GetComponentsInChildren<NavMeshModifier>());
|
|
modifiers.RemoveAll(x => !x.isActiveAndEnabled);
|
|
}
|
|
else
|
|
{
|
|
modifiers = NavMeshModifier.activeModifiers;
|
|
}
|
|
|
|
foreach (var m in modifiers)
|
|
{
|
|
if ((m_LayerMask & (1 << m.gameObject.layer)) == 0)
|
|
continue;
|
|
if (!m.AffectsAgentType(m_AgentTypeID))
|
|
continue;
|
|
var markup = new NavMeshBuildMarkup();
|
|
markup.root = m.transform;
|
|
markup.overrideArea = m.overrideArea;
|
|
markup.area = m.area;
|
|
markup.ignoreFromBuild = m.ignoreFromBuild;
|
|
markups.Add(markup);
|
|
}
|
|
|
|
#if UNITY_EDITOR
|
|
if (!EditorApplication.isPlaying)
|
|
{
|
|
if (m_CollectObjects == CollectObjects.All)
|
|
{
|
|
UnityEditor.AI.NavMeshBuilder.CollectSourcesInStage(
|
|
null, m_LayerMask, m_UseGeometry, m_DefaultArea, markups, gameObject.scene, sources);
|
|
}
|
|
else if (m_CollectObjects == CollectObjects.Children)
|
|
{
|
|
UnityEditor.AI.NavMeshBuilder.CollectSourcesInStage(
|
|
transform, m_LayerMask, m_UseGeometry, m_DefaultArea, markups, gameObject.scene, sources);
|
|
}
|
|
else if (m_CollectObjects == CollectObjects.Volume)
|
|
{
|
|
Matrix4x4 localToWorld = Matrix4x4.TRS(transform.position, transform.rotation, Vector3.one);
|
|
var worldBounds = GetWorldBounds(localToWorld, new Bounds(m_Center, m_Size));
|
|
|
|
UnityEditor.AI.NavMeshBuilder.CollectSourcesInStage(
|
|
worldBounds, m_LayerMask, m_UseGeometry, m_DefaultArea, markups, gameObject.scene, sources);
|
|
}
|
|
}
|
|
else
|
|
#endif
|
|
{
|
|
if (m_CollectObjects == CollectObjects.All)
|
|
{
|
|
NavMeshBuilder.CollectSources(null, m_LayerMask, m_UseGeometry, m_DefaultArea, markups, sources);
|
|
}
|
|
else if (m_CollectObjects == CollectObjects.Children)
|
|
{
|
|
NavMeshBuilder.CollectSources(transform, m_LayerMask, m_UseGeometry, m_DefaultArea, markups, sources);
|
|
}
|
|
else if (m_CollectObjects == CollectObjects.Volume)
|
|
{
|
|
Matrix4x4 localToWorld = Matrix4x4.TRS(transform.position, transform.rotation, Vector3.one);
|
|
var worldBounds = GetWorldBounds(localToWorld, new Bounds(m_Center, m_Size));
|
|
NavMeshBuilder.CollectSources(worldBounds, m_LayerMask, m_UseGeometry, m_DefaultArea, markups, sources);
|
|
}
|
|
}
|
|
|
|
if (m_IgnoreNavMeshAgent)
|
|
sources.RemoveAll((x) => (x.component != null && x.component.gameObject.GetComponent<NavMeshAgent>() != null));
|
|
|
|
if (m_IgnoreNavMeshObstacle)
|
|
sources.RemoveAll((x) => (x.component != null && x.component.gameObject.GetComponent<NavMeshObstacle>() != null));
|
|
|
|
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
|
|
}
|
|
}
|