private void ApplyMouseVelocityToVectorGrid()
{
if (Input.LeftMousePressed)
{
LastMousePosition = Input.Mouse;
}
else if (Input.LeftMouseDown)
{
var diff = Input.Mouse - LastMousePosition;
if (diff.LengthSquared >= 1)
{
var diffNormal = (diff).Normalized();
const int MouseDistanceSq = 100 * 100;
for (var x = 0; x < grid.Width; x++)
{
for (var y = 0; y < grid.Height; y++)
{
if ((Input.Mouse - grid.GridPositionToWorldPosition(new Vector2(x, y))).LengthSquared <= MouseDistanceSq)
{
var tile = grid.Get(x, y);
if (tile != null)
{
tile.Vector = diffNormal;
}
}
}
}
}
LastMousePosition = Input.Mouse;
}
}
public void ApplyVectorGridSynchronously(VectorGrid _vectorGrid)
{
foreach (var particle in particles)
{
var tile = _vectorGrid.Get(_vectorGrid.WorldPositionToGridPosition(particle.Position));
if (tile != null)
{
particle.ApplyForce(0.001f * tile.Vector * Game.Delta);
}
}
}