void BakeNavMesh2D()
{
// create a temporary parent GameObject
var obj = new GameObject();
// find all static box colliders, add them to projection
AddBoxCollider2Ds(obj.transform);
// find all static circle colliders, add them to projection
AddCircleCollider2Ds(obj.transform);
// find all static polygon colliders, add them to projection
AddPolygonCollider2Ds(obj.transform);
// find all edge polygon colliders, add them to projection
AddEdgeCollider2Ds(obj.transform);
// find all tilemap colliders, add them to projection
#if UNITY_2017_2_OR_NEWER
AddTilemapCollider2Ds(obj.transform);
#endif
// min and max point from 2D colliders projected to 3D.
// (scanning through 3D colliders doesn't work well because the polygon
// GameObjects are pure meshes without colliders)
var cols = GameObject.FindObjectsOfType <Collider2D>();
if (cols.Length > 0)
{
var min = new float2(float.MaxValue, float.MaxValue);
var max = -min;
foreach (var c in cols)
{
var minmax = NavMeshUtils2D.AdjustMinMax(c, min, max);
min = minmax[0];
max = minmax[1];
}
// create ground (cube instead of plane because it has unit size)
// (pos between min and max; scaled to fit min and max * scale)
// note: scale.y=0 so that *navmeshExtends doesn't make it too high
var go = GameObject.CreatePrimitive(PrimitiveType.Cube);
go.name = "Ground"; // for debugging
go.isStatic = true;
go.transform.parent = obj.transform;
float w = max.x - min.x;
float h = max.y - min.y;
go.transform.position = new Vector3(min.x + w / 2, -0.5f, min.y + h / 2);
go.transform.localScale = new Vector3(w, 0, h) * navmeshExtends;
}
// bake navmesh asynchronously, clear mesh
UnityEditor.AI.NavMeshBuilder.BuildNavMeshAsync(); // Async causes weird results
if (gizmesh != null)
{
gizmesh.Clear();
}
needsRebuild = true; // rebuild as soon as async baking is finished
// delete the gameobjects now that the path was created
GameObject.DestroyImmediate(obj);
}
void BakeNavMesh2D()
{
// create a temporary parent GameObject
var obj = new GameObject();
// find all static box colliders, add them to projection
AddBoxCollider2Ds(obj.transform);
// find all static circle colliders, add them to projection
AddCircleCollider2Ds(obj.transform);
// find all static polygon colliders, add them to projection
AddPolygonCollider2Ds(obj.transform);
// min and max point needed for ground plane (from 3d colliders)
var cols = GameObject.FindObjectsOfType <Collider>();
if (cols.Length > 0)
{
var min = new Vector2(Mathf.Infinity, Mathf.Infinity);
var max = -min;
foreach (var c in cols)
{
var minmax = NavMeshUtils2D.AdjustMinMax(c, min, max);
min = minmax[0];
max = minmax[1];
}
// create ground (cube instead of plane because it has unit size)
// (pos between min and max; scaled to fit min and max * scale)
// note: scale.y=0 so that *groundScale doesn't make it too high
var go = GameObject.CreatePrimitive(PrimitiveType.Cube);
go.isStatic = true;
go.transform.parent = obj.transform;
float w = max.x - min.x;
float h = max.y - min.y;
go.transform.position = new Vector3(min.x + w / 2, -0.5f, min.y + h / 2);
go.transform.localScale = new Vector3(w, 0, h) * groundScale;
}
// bake navmesh asynchronously, clear mesh
NavMeshBuilder.BuildNavMeshAsync(); // Async causes weird results
if (gizmesh != null)
{
gizmesh.Clear();
}
needsRebuild = true; // rebuild as soon as async baking is finished
// delete the gameobjects now that the path was created
GameObject.DestroyImmediate(obj);
}
