1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
|
using UnityEngine;
using UnityEngine.AI;
using System.Collections;
using System.Collections.Generic;
using NavMeshBuilder = UnityEngine.AI.NavMeshBuilder;
namespace Unity.AI.Navigation.Samples
{
/// <summary>
/// Build and update a localized navmesh from the sources marked by NavMeshSourceTag
/// </summary>
[DefaultExecutionOrder(-102)]
public class LocalNavMeshBuilder : MonoBehaviour
{
/// <summary>
/// The center of the build
/// </summary>
public Transform m_Tracked;
/// <summary>
/// The size of the build bounds
/// </summary>
public Vector3 m_Size = new Vector3(80.0f, 20.0f, 80.0f);
NavMeshData m_NavMesh;
AsyncOperation m_Operation;
NavMeshDataInstance m_Instance;
List<NavMeshBuildSource> m_Sources = new List<NavMeshBuildSource>();
IEnumerator Start()
{
while (true)
{
UpdateNavMesh(true);
yield return m_Operation;
}
}
void OnEnable()
{
// Construct and add navmesh
m_NavMesh = new NavMeshData();
m_Instance = NavMesh.AddNavMeshData(m_NavMesh);
if (m_Tracked == null)
m_Tracked = transform;
UpdateNavMesh(false);
}
void OnDisable()
{
// Unload navmesh and clear handle
m_Instance.Remove();
}
void UpdateNavMesh(bool asyncUpdate = false)
{
NavMeshSourceTag.Collect(ref m_Sources);
var defaultBuildSettings = NavMesh.GetSettingsByID(0);
var bounds = QuantizedBounds();
if (asyncUpdate)
m_Operation = NavMeshBuilder.UpdateNavMeshDataAsync(m_NavMesh, defaultBuildSettings, m_Sources, bounds);
else
NavMeshBuilder.UpdateNavMeshData(m_NavMesh, defaultBuildSettings, m_Sources, bounds);
}
static Vector3 Quantize(Vector3 v, Vector3 quant)
{
float x = quant.x * Mathf.Floor(v.x / quant.x);
float y = quant.y * Mathf.Floor(v.y / quant.y);
float z = quant.z * Mathf.Floor(v.z / quant.z);
return new Vector3(x, y, z);
}
Bounds QuantizedBounds()
{
// Quantize the bounds to update only when theres a 10% change in size
var center = m_Tracked ? m_Tracked.position : transform.position;
return new Bounds(Quantize(center, 0.1f * m_Size), m_Size);
}
void OnDrawGizmosSelected()
{
if (m_NavMesh)
{
Gizmos.color = Color.green;
Gizmos.DrawWireCube(m_NavMesh.sourceBounds.center, m_NavMesh.sourceBounds.size);
}
Gizmos.color = Color.yellow;
var bounds = QuantizedBounds();
Gizmos.DrawWireCube(bounds.center, bounds.size);
Gizmos.color = Color.green;
var center = m_Tracked ? m_Tracked.position : transform.position;
Gizmos.DrawWireCube(center, m_Size);
}
}
}
|
