private Vector2[] VerticalConvex(Vector2[] chunks)
{
List <Vector2> convex = new List <Vector2>();
if (chunks.Length <= 0)
{
return(convex.ToArray());
}
ChunksWalker walker = new ChunksWalker(chunks[0], chunks);
while (true)
{
foreach (IConvexStateHandler handler in mHandlers)
{
handler.Handle(walker, convex);
}
if (convex.Count > 0)
{
Vector2 pos = walker.Pos();
Vector2 start = convex[0];
if (ChunksWalker.IsSamePoint(pos, start))
{
break;
}
}
}
return(convex.ToArray());
}
public void Handle(ChunksWalker walker, List <Vector2> convex)
{
int state = walker.State();
if (state == 15)
{
walker.Jump(-walker.tileWidth, -walker.tileHeight);
}
else if (walker.Direction() == ChunksWalker.DIRECTION_STAY)
{
// start point
convex.Add(walker.Pos());
if (state == 1 || state == 5 || state == 13 || state == 9)
{
walker.WalkUp();
}
else if (state == 2 || state == 3 || state == 7 || state == 6)
{
walker.WalkRight();
}
else if (state == 8 || state == 10 || state == 11)
{
walker.WalkDown();
}
else if (state == 4 || state == 12 || state == 14)
{
walker.WalkLeft();
}
convex.Add(walker.Pos());
}
}
public void Handle(ChunksWalker walker, List <Vector2> convex)
{
int direction = walker.Direction();
if (direction == ChunksWalker.DIRECTION_STAY)
{
return;
}
int state = walker.State();
if (state == 4 || state == 12 || state == 14 ||
(direction == ChunksWalker.DIRECTION_UP && state == 6))
{
walker.WalkLeft();
convex.Add(walker.Pos());
}
}
public void Handle(ChunksWalker walker, List <Vector2> convex)
{
int direction = walker.Direction();
if (direction == ChunksWalker.DIRECTION_STAY)
{
return;
}
int state = walker.State();
if (state == 8 || state == 10 || state == 11 ||
(direction == ChunksWalker.DIRECTION_LEFT && state == 9))
{
walker.WalkDown();
convex.Add(walker.Pos());
}
}
