void Update()
{
// copy properties to projection all the time
// (in case they are modified after creating it)
agent.speed = speed;
agent.angularSpeed = angularSpeed;
agent.acceleration = acceleration;
agent.stoppingDistance = stoppingDistance;
agent.autoBraking = autoBraking;
agent.radius = radius;
agent.obstacleAvoidanceType = quality;
agent.avoidancePriority = priority;
agent.autoRepath = autoRepath;
// copy position: transform in Update, rigidbody in FixedUpdate
if (rigidbody2D == null || rigidbody2D.isKinematic)
{
transform.position = NavMeshUtils2D.ProjectTo2D(agent.transform.position);
}
// stuck detection
if (IsStuck())
{
// stop agent movement, reset it to current position
agent.ResetPath();
agent.transform.position = NavMeshUtils2D.ProjectTo3D(transform.position);
Debug.Log("stopped agent because of collision in 2D plane");
}
}
void FixedUpdate()
{
// copy position: transform in Update, rigidbody in FixedUpdate
if (rigidbody2D != null && !rigidbody2D.isKinematic)
{
rigidbody2D.MovePosition(NavMeshUtils2D.ProjectTo2D(agent.transform.position));
}
}
void LateUpdate()
{
// copy position again, maybe NavMeshAgent did something new
if (rigidbody2D == null || rigidbody2D.isKinematic)
{
transform.position = NavMeshUtils2D.ProjectTo2D(agent.transform.position);
}
}
bool IsStuck()
{
// stuck detection: get max distance first (best with collider)
float maxdist = 2; // default if no collider
if (collider2D != null)
{
var bounds = collider2D.bounds;
maxdist = Mathf.Max(bounds.extents.x, bounds.extents.y) * 2;
}
// stuck detection: reset if distance > max distance
float dist = Vector2.Distance(transform.position, NavMeshUtils2D.ProjectTo2D(agent.transform.position));
return(dist > maxdist);
}
void FixedUpdate()
{
// copy properties to projection all the time
// (in case they are modified after creating it)
agent.speed = speed;
agent.angularSpeed = angularSpeed;
agent.acceleration = acceleration;
agent.stoppingDistance = stoppingDistance;
agent.autoBraking = autoBraking;
agent.radius = radius;
agent.obstacleAvoidanceType = quality;
agent.avoidancePriority = priority;
agent.autoRepath = autoRepath;
// copy projection's position
var rb = GetComponent <Rigidbody2D>();
if (rb != null && !rb.isKinematic)
{
rb.MovePosition(NavMeshUtils2D.ProjectTo2D(agent.transform.position));
}
else
{
transform.position = NavMeshUtils2D.ProjectTo2D(agent.transform.position);
}
// stuck detection: get max distance first (best with collider)
float maxdist = 2; // default if no collider
if (GetComponent <Collider2D>())
{
var bounds = GetComponent <Collider2D>().bounds;
maxdist = Mathf.Max(bounds.extents.x, bounds.extents.y) * 2;
}
// stuck detection: reset if distance > max distance
float dist = Vector2.Distance(transform.position, NavMeshUtils2D.ProjectTo2D(agent.transform.position));
if (dist > maxdist)
{
// stop agent movement, reset it to current position
agent.ResetPath();
agent.transform.position = NavMeshUtils2D.ProjectTo3D(transform.position);
Debug.Log("stopped agent because of collision in 2D plane");
}
}
void Update()
{
// copy position: transform in Update, rigidbody in FixedUpdate
if (rigidbody2D == null || rigidbody2D.isKinematic)
{
transform.position = NavMeshUtils2D.ProjectTo2D(agent.transform.position);
}
// stuck detection
if (IsStuck())
{
// stop agent movement, reset it to current position
agent.ResetPath();
agent.transform.position = NavMeshUtils2D.ProjectTo3D(transform.position);
Debug.Log("stopped agent because of collision in 2D plane");
}
}
// based on: https://docs.unity3d.com/ScriptReference/AI.NavMesh.SamplePosition.html
public static bool SamplePosition(Vector2 sourcePosition, out NavMeshHit2D hit, float maxDistance, int areaMask)
{
NavMeshHit hit3D;
if (NavMesh.SamplePosition(NavMeshUtils2D.ProjectTo3D(sourcePosition), out hit3D, maxDistance, areaMask))
{
hit = new NavMeshHit2D {
position = NavMeshUtils2D.ProjectTo2D(hit3D.position),
normal = NavMeshUtils2D.ProjectTo2D(hit3D.normal),
distance = hit3D.distance,
mask = hit3D.mask,
hit = hit3D.hit
};
return(true);
}
hit = new NavMeshHit2D();
return(false);
}
public static bool Raycast(Vector2 sourcePosition, Vector2 targetPosition, out NavMeshHit2D hit, int areaMask)
{
if (NavMesh.Raycast(NavMeshUtils2D.ProjectTo3D(sourcePosition),
NavMeshUtils2D.ProjectTo3D(targetPosition),
out NavMeshHit hit3D,
areaMask))
{
hit = new NavMeshHit2D {
position = NavMeshUtils2D.ProjectTo2D(hit3D.position),
normal = NavMeshUtils2D.ProjectTo2D(hit3D.normal),
distance = hit3D.distance,
mask = hit3D.mask,
hit = hit3D.hit
};
return(true);
}
hit = new NavMeshHit2D();
return(false);
}
