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【Unity】问题记录“SetDestination“ can only be called on an active agent that has been placed on a NavMesh

金牛豆豆 2022-06-30 阅读 71

问题:"SetDestination" can only be called on an active agent that has been placed on a NavMesh.

原因:导航NavMeshAgent组件所在物体距离Navmesh导航网格太远,'NavMeshAgent.SetDestination'设置导航目标点失败

解决:在设置导航目标点之前,可以用‘ NavMeshAgent.isOnNavMesh’判断,在返回值为Ture后再'NavMeshAgent.SetDestination',如果返回值为False,说明当前NavMeshAgent不在导航网格上,可用‘NavMeshAgent.Warp’纠正位置。

此外,还可以用‘NavMesh.SamplePosition’检测地图内某点是否在导航网格NavMesh内

public bool TestNavigation()
{
if (navMeshAgent.isOnNavMesh)
{
NavMeshHit navigationHit;
if (NavMesh.SamplePosition(targetPosition, out navigationHit, 15, navMeshAgent.areaMask))
return navMeshAgent.SetDestination(navigationHit.position);
return false;
}
else
{
return navMeshAgent.Warp(warpPosition);
}
}


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