public Edge(MoveBlockBarrier parent, Vector2 a, Vector2 b)
{
Parent = parent;
Visible = true;
A = a;
B = b;
Min = new Vector2(Math.Min(a.X, b.X), Math.Min(a.Y, b.Y));
Max = new Vector2(Math.Max(a.X, b.X), Math.Max(a.Y, b.Y));
Normal = (b - a).SafeNormalize();
Perpendicular = -Normal.Perpendicular();
Length = (a - b).Length();
}
public void Track(MoveBlockBarrier block)
{
list.Add(block);
if (tiles == null)
{
levelTileBounds = (Scene as Level).TileBounds;
tiles = new VirtualMap <bool>(levelTileBounds.Width, levelTileBounds.Height, emptyValue: false);
}
for (int i = (int)block.X / 8; i < block.Right / 8f; i++)
{
for (int j = (int)block.Y / 8; j < block.Bottom / 8f; j++)
{
tiles[i - levelTileBounds.X, j - levelTileBounds.Y] = true;
}
}
dirty = true;
}
public void Untrack(MoveBlockBarrier block)
{
list.Remove(block);
if (list.Count <= 0)
{
tiles = null;
}
else
{
for (int i = (int)block.X / 8; i < block.Right / 8f; i++)
{
for (int j = (int)block.Y / 8; j < block.Bottom / 8f; j++)
{
tiles[i - levelTileBounds.X, j - levelTileBounds.Y] = false;
}
}
}
dirty = true;
}