public void InitLightMesh(IEnumerable <WallController> wallControllers)
{
_mesh = GetComponent <MeshFilter>().mesh;
var vertices2d = new List <Vector2>();
GameObject lastHitWall = null;
WallController lastWallController = null;
EdgeKind lastHitEdgeKind = EdgeKind.None;
Vector3 lastHitPointLocal = new Vector3();
Vector3 lastHitPointWorld = new Vector3();
DrawRaycast(transform.position, wallControllers);
float angle = 0;
for (int i = 0; i < _raysToShoot; i++)
{
var x = Mathf.Sin(angle);
var y = Mathf.Cos(angle);
angle -= 2 * Mathf.PI / _raysToShoot;
Vector3 dir = new Vector3(x, y, 0);
RaycastHit2D hit;
hit = Physics2D.Raycast(transform.position, dir, _distance, WallLayerMask);
if (hit.collider != null)
{
Vector3 curHitPointWorld = hit.point;
Vector3 curHitPointLocal = transform.InverseTransformPoint(curHitPointWorld);
WallController curWallController = hit.collider.GetComponent <WallController>();
EdgeKind curHitEdgeKind = curWallController.GetEdgeKind(curHitPointWorld);
if (curHitEdgeKind == EdgeKind.None)
{
//TODO this shouldn't happen!! this happens with all the points close to an intersecting point between two edges
//that's why the edges don't close properly
lastHitPointLocal = curHitPointLocal;
continue;
//draw points on if on no edge
//Debug.DrawLine(transform.position, hit.point, Color.white, 180);
//curWallController.DrawEdges();
}
if (lastHitWall == null)
{
lastHitWall = hit.collider.gameObject;
}
else if (lastHitWall != hit.collider.gameObject || curHitEdgeKind != lastHitEdgeKind)
{
//always add first and last hitpoint on the same wall to form an edge
//add last hit point
vertices2d.Add(lastHitPointLocal);
lastHitWall = hit.collider.gameObject;
//add current hit point
vertices2d.Add(curHitPointLocal);
AddWallHit(lastWallController, lastHitEdgeKind, lastHitPointWorld);
bool isCurWallParent = GetComponentInParent <WallController>() == curWallController;
if (isCurWallParent)
{
var curEdge = curWallController.GetEdge(curHitEdgeKind);
AddWallHit(curWallController, curHitEdgeKind, curEdge.Start);
AddWallHit(curWallController, curHitEdgeKind, curEdge.End);
_curentlyIgnoredWall = curWallController;
}
else
{
AddWallHit(curWallController, curHitEdgeKind, curHitPointWorld);
}
}
lastHitPointLocal = curHitPointLocal;
lastHitPointWorld = curHitPointWorld;
lastHitEdgeKind = curHitEdgeKind;
lastWallController = curWallController;
}
else
{
var tmp = transform.InverseTransformPoint(transform.position + dir);
lastHitPointLocal = new Vector2(tmp.x, tmp.y);
vertices2d.Add(lastHitPointLocal);
}
}
vertices2d.Add(lastHitPointLocal);
// build mesh
List <Vector3> newVertices = new List <Vector3>();
foreach (var curPos in vertices2d)
{
newVertices.Add(new Vector3(curPos.x, curPos.y, 0));
}
var triangles = new int[newVertices.Count * 3];
// triangle list
int j = -1;
for (int n = 0; n < triangles.Length - 3; n += 3)
{
j++;
triangles[n] = newVertices.Count - 1;
if (j >= newVertices.Count)
{
triangles[n + 1] = 0;
}
else
{
triangles[n + 1] = j + 1;
}
triangles[n + 2] = j;
}
j++;
// central point
newVertices[newVertices.Count - 1] = new Vector3(0, 0, 0);
triangles[triangles.Length - 3] = newVertices.Count - 1;
triangles[triangles.Length - 2] = 0;
triangles[triangles.Length - 1] = j - 1;
// Create the mesh
_mesh.vertices = newVertices.ToArray();
_mesh.triangles = triangles;
_mesh.uv = new Vector2[newVertices.Count];
CloseWallHitContainers();
}
