void OnSceneGUI(SceneView sceneView)
{
//If click on the scene view and is left mouse button clicked
if (Event.current.type == EventType.MouseDown && Event.current.button == 0)
{
//make a ray from the scene view camera
Ray ray = HandleUtility.GUIPointToWorldRay(Event.current.mousePosition);
RaycastHit hit;
//if find a element a tile can be placed on
if (Physics.Raycast(ray, out hit, 1000, 1 << LayerMask.NameToLayer("Walkable")))
{
//Create a element storing the selected face
PathTileElement element = new PathTileElement(hit.transform.gameObject, hit.normal);
//If the face is already selected, deselect it
if (ContainsElement(element))
{
RemoveElement(element);
}
else
{
//else, add it to the selection
selectedFace.Add(element);
}
}
else
{
ResetSelection();
}
//Use the event so the editor does not take it as usual
Event.current.Use();
}
DisplaySelection();
}
//Remove the selected face from the scene
void RemoveFace(PathTileElement element)
{
if (DoesFaceExists(element.tile, element.normal))
{
//Delete the object corresponding to the selected face
Transform child = GetFaceByOrientation(element.tile, element.normal);
DestroyImmediate(child.gameObject);
}
}
//Return if the current element is in the selected faces or not
bool ContainsElement(PathTileElement elt)
{
foreach (PathTileElement element in selectedFace)
{
if (element.normal == elt.normal && element.tile == elt.tile)
{
return(true);
}
}
return(false);
}
//Remove the selected element
void RemoveElement(PathTileElement element)
{
for (int i = 0; i < selectedFace.Count; i++)
{
if (ContainsElement(selectedFace[i]))
{
selectedFace.RemoveAt(i);
return;
}
}
}
