72 lines
1.9 KiB
C#
72 lines
1.9 KiB
C#
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using System;
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using UnityEngine;
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using UnityEngine.AI;
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namespace Unity.AI.Navigation.Samples
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{
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/// <summary>
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/// Update a NavMeshSurface with Volume object collection
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/// </summary>
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[DefaultExecutionOrder(-102)]
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public class NavMeshSurfaceVolumeUpdater : MonoBehaviour
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{
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[SerializeField]
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NavMeshAgent trackedAgent;
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NavMeshSurface m_Surface;
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Vector3 m_VolumeSize;
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void Awake()
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{
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m_Surface = GetComponent<NavMeshSurface>();
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}
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void OnEnable()
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{
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m_VolumeSize = m_Surface.size;
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m_Surface.center = QuantizedCenter();
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m_Surface.BuildNavMesh();
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}
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void Update()
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{
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UpdateNavMeshOnCenterOrSizeChange();
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}
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void UpdateNavMeshOnCenterOrSizeChange()
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{
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var updatedCenter = QuantizedCenter();
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var updateNavMesh = false;
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if (m_Surface.center != updatedCenter)
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{
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m_Surface.center = updatedCenter;
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updateNavMesh = true;
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}
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if (m_Surface.size != m_VolumeSize)
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{
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m_VolumeSize = m_Surface.size;
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updateNavMesh = true;
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}
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if (updateNavMesh)
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m_Surface.UpdateNavMesh(m_Surface.navMeshData);
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}
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static Vector3 Quantize(Vector3 v, Vector3 quant)
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{
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float x = quant.x * Mathf.Floor(v.x / quant.x);
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float y = quant.y * Mathf.Floor(v.y / quant.y);
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float z = quant.z * Mathf.Floor(v.z / quant.z);
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return new Vector3(x, y, z);
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}
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Vector3 QuantizedCenter()
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{
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// Quantize the center position to update only when there's a 10% change in position relative to size
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var center = trackedAgent.transform.position;
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return Quantize(center, 0.1f * m_Surface.size);
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}
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}
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}
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