// Update is called once per frame
void Update()
{
if (Input.GetMouseButton(0))
{ //mouse is down
currentMousePosition = Input.mousePosition;
//get the mouse's world position
currentMousePosition = camera.ScreenToWorldPoint(new Vector3(currentMousePosition.x, currentMousePosition.y, 10));
if (((Vector3.Distance(currentMousePosition, lastMousePosition) > threshold) &&
(maxDrawDistance - distanceDrawn > Vector3.Distance(currentMousePosition, lastMousePosition)) ||
(points.Count == 0))) //do not keep point if it is too close, or if it exceeds remaining draw distance
//unless it is the first point, in which case it should be added regardless
{
//check if the new point overlaps some collider that we can't draw over
LayerMask mask = LayerMask.GetMask("Cutouts", "Terrain");
Collider2D hitCollider = Physics2D.OverlapPoint((Vector2)currentMousePosition, mask);
if (hitCollider != null)
{
return; //if it does don't place it
}
//check if the new point overlaps a drawable zone
mask = LayerMask.GetMask("Draw Area");
hitCollider = Physics2D.OverlapPoint((Vector2)currentMousePosition, mask);
if (hitCollider == null)
{
return; //if it doesn't don't place it
}
//for points after the first, we need to check for self-intersections and going through cutouts.
if (points.Count != 0)
{
if (!ic.CheckIfAddable(currentMousePosition, points, threshold)) //check self-intersection, separate check because it is long
{
return;
}
distanceDrawn += Vector3.Distance(currentMousePosition, lastMousePosition); //reduce drawing distance
}
//add the point to the line
points.Add(currentMousePosition);
lrenderer.positionCount++;
lrenderer.SetPosition(lrenderer.positionCount - 1, points[points.Count - 1]);
lastMousePosition = currentMousePosition; //update position of last point
}
}
else //if the mouse isn't down, input is done
{
if (points.Count > 1f) //if there are more than 2 points already drawn, try to materialize it.
{
spawner.MaterializeObject(points);
SetupNewObject();
}
}
if (Input.GetMouseButtonDown(1)) //on right-click, cancel the drawing
{
SetupNewObject();
}
}
