private void HandleInput()
{
if (Input.KeyboardHold(Keys.S)) // Select nearest vertex
{
var foundVertex = Vertices.IndexOf(Vertices.OrderBy(v => (v.Position - Input.MousePos.ToVector2()).LengthSquared()).First());
if (Input.MouseClick)
{
currentVertex = foundVertex;
}
if (Input.RightMouseClick)
{
currentShiftVertex = foundVertex;
}
}
else // Toggle static or add segments
{
if (Input.MouseClick)
{
Vertices[currentVertex].StaticPos = Input.MousePos.ToVector2();
Vertices[currentVertex].Static = !Vertices[currentVertex].Static;
}
if (Input.RightMouseClick)
{
var newVertex = new ChainVertex(Input.MousePos.ToVector2(), (float)(Rand.NextDouble() * 8f + 4f), 0.9f, 0.5f, GRAVITY);
Vertices.Add(newVertex);
Segments.Add(new ChainSegment(newVertex, Vertices[currentVertex], (float)(Rand.NextDouble() * 20f + 10f)));
currentVertex = Vertices.Count - 1;
}
}
if (Input.KeyboardClick(Keys.L)) // Link / Unlink
{
if (currentShiftVertex != currentVertex)
{
if (Input.Shift)
{
var foundSegment = Segments.First(s => (s.Vertex1 == Vertices[currentVertex] && s.Vertex2 == Vertices[currentShiftVertex]) || (s.Vertex2 == Vertices[currentVertex] && s.Vertex1 == Vertices[currentShiftVertex]));
if (foundSegment != null)
{
Segments.Remove(foundSegment);
}
}
else
{
Segments.Add(new ChainSegment(Vertices[currentShiftVertex], Vertices[currentVertex], (float)(Rand.NextDouble() * 20f + 10f)));
}
}
}
if (Input.ScrollDown) // Change selected vertices
{
if (Input.Shift)
{
currentShiftVertex++;
if (currentShiftVertex >= Vertices.Count)
{
currentShiftVertex = 0;
}
}
else
{
currentVertex++;
if (currentVertex >= Vertices.Count)
{
currentVertex = 0;
}
}
}
if (Input.ScrollUp)
{
if (Input.Shift)
{
currentShiftVertex--;
if (currentShiftVertex < 0)
{
currentShiftVertex = Vertices.Count - 1;
}
}
else
{
currentVertex--;
if (currentVertex < 0)
{
currentVertex = Vertices.Count - 1;
}
}
}
if (Input.KeyboardHold(Keys.H)) // Hold current vertex to mouse
{
Vertices[currentVertex].Position = Input.MousePos.ToVector2();
}
if (Input.KeyboardClick(Keys.Back) || Input.KeyboardClick(Keys.Delete)) // Delete current vertex
{
if (Vertices.Count > 1)
{
var vertexToDelete = Vertices[currentVertex];
foreach (var s in Segments.Where(s => s.Vertex1 == vertexToDelete || s.Vertex2 == vertexToDelete).ToList())
{
Segments.Remove(s);
}
Vertices.Remove(vertexToDelete);
if (currentVertex >= Vertices.Count)
{
currentVertex = Vertices.Count - 1;
}
}
}
if (Input.KeyboardClick(Keys.I))
{
ShowStats = !ShowStats;
}
}
public ChainSegment(ChainVertex vertex1, ChainVertex vertex2, float length)
{
Vertex1 = vertex1;
Vertex2 = vertex2;
Length = length;
}
