public void Render(Player player, List <Ball> balls, List <Monster> monsters)
{
Gdk.Window canvas = area.GdkWindow;
if (canvas != null)
{
using (Cairo.Context context = Gdk.CairoHelper.Create(canvas)) {
canvas.BeginPaintRegion(new Gdk.Region());
context.SetSourceSurface(background, 0, 0);
context.Paint();
foreach (Field field in player.Trail)
{
paintTrail(context, field.X * fieldSize, field.Y * fieldSize);
}
foreach (Ball ball in balls)
{
context.SetSourceRGB(1, 0, 0);
paintCircle(context, ball.X, ball.Y);
}
foreach (Monster monster in monsters)
{
paintMonster(context, monster);
}
context.SetSourceRGB(0, 0, 1);
paintPlayer(context, player);
canvas.EndPaint();
}
}
}
void BeginPaintRegion(Gdk.Region r)
{
Gdk.Window win = areaGroup.DrawingArea.GdkWindow;
win.BeginPaintRegion(r);
}