private void Apply(Point pos, Match rule)
{
if (!IsMatch(pos, rule))
{
return;
}
foreach (var subMatch in rule.SubMatches)
{
Apply(pos, subMatch);
}
foreach (var piece in rule.Pieces)
{
DrawPiece(piece, pos);
}
}
private Func <MatchPoint, bool> DoesMatch(Point pos)
{
return(a =>
{
var p = a.Position + new Point((int)pos.X, (int)pos.Y);
if (p.X < 0 || p.X >= Array.GetLength(0))
{
return false;
}
if (p.Y < 0 || p.Y >= Array.GetLength(1))
{
return false;
}
if (a.MatchType == "Shadows" || a.MatchType == "NotShadows")
{
return false;
}
return Array[p.X, p.Y] == (a.MatchType == "EqualsSelf");
});
}
private void DrawPiece(ReplacementPiece piece, Point pos)
{
var p = pos * 8 + piece.Position;
var tile = GetTile(piece.Piece, pos);
GL.PushMatrix();
GL.Translate(p.X, p.Y, 0);
GL.Begin(BeginMode.Quads);
GL.TexCoord2(TexCoord(tile, 0, 1));
GL.Vertex2(Scale(tile, 0, 0));
GL.TexCoord2(TexCoord(tile, 1, 1));
GL.Vertex2(Scale(tile, 1, 0));
GL.TexCoord2(TexCoord(tile, 1, 0));
GL.Vertex2(Scale(tile, 1, 1));
GL.TexCoord2(TexCoord(tile, 0, 0));
GL.Vertex2(Scale(tile, 0, 1));
GL.End();
GL.PopMatrix();
}
private int GetVariant(Point pos)
{
return((int)(pos.X * 2473 + pos.Y) % Material.Variants);
}
private bool IsMatch(Point pos, Match rule)
{
return(rule.MatchAllPoints.All(DoesMatch(pos)));
}
private Rectangle GetTile(string pieceName, Point pos)
{
var piece = Material.Pieces[pieceName];
return((piece.TexturePosition + piece.ColorStride * ColorIndex + piece.VariantStride * GetVariant(pos)).ToRect(piece.TextureSize));
}
