private Obstacle GetClosestObstacle (List<Obstacle> obstacles, Vector2 start) {
Obstacle closestObst = new Obstacle(Bounds);
Obstacle closestEdge = GetClosestEdge(start);
double closest = 30000;
double distEdge = Vector2.Distance(start, closestEdge.Position);
foreach (Obstacle o in obstacles) {
double dist = Vector2.Distance(start, o.Position);
if (dist < closest) {
closest = dist;
closestObst = o;
}
}
if (distEdge < closest) {
closestObst = closestEdge;
}
return closestObst;
}
private Obstacle GetClosestEdge (Vector2 start) {
Obstacle edgeObst = new Obstacle(Bounds);
float closest = 30000;
for (int i = 0; i < 4; ++i) {
Vector2 projection = ProjectionOnEdge(start, _edges[i, 0], _edges[i, 1], _edgeLengths[i]);
float dist = Vector2.Distance(start, projection);
if (dist < closest) {
closest = dist;
edgeObst.Position = projection;
}
}
return edgeObst;
}
private void ProcessInput()
{
if ((Mouse.GetState().LeftButton == ButtonState.Pressed) && (Ticks % 10 == 0)) {
Vector2 mouse = new Vector2(Mouse.GetState().X, Mouse.GetState().Y);
Obstacle obstacle = new Obstacle(Bounds);
obstacle.Position = Vector2.Transform(mouse, Camera.InverseTransform);
if (Bounds.Contains(Origin(obstacle.Position))) {
Obstacles.Add(obstacle);
}
}
if (Mouse.GetState().RightButton == ButtonState.Pressed) {
Vector2 mouse = new Vector2(Mouse.GetState().X, Mouse.GetState().Y);
mouse = Vector2.Transform(mouse, Camera.InverseTransform);
if (Bounds.Contains(Origin(mouse))) {
Obstacles.Clear();
}
}
}