private void Render(double interpolate = 1)
{
if (!surfaceHolder.Surface.IsValid)
{
return;
}
Canvas canvas;
if (Android.OS.Build.VERSION.SdkInt >= Android.OS.BuildVersionCodes.O)
{
canvas = surfaceHolder.LockHardwareCanvas();
}
else
{
canvas = surfaceHolder.LockCanvas();
}
canvas.DrawBitmap(background.Bitmap, background.X, background.Y, null);
for (int i = 0; i < birds.Count; i++)
{
Bird bird = birds.ElementAt(i);
canvas.DrawBitmap(bird.Bitmap, (float)(bird.X), bird.Y, null);
}
canvas.DrawBitmap(hero.Bitmap, (float)(hero.X), hero.Y, null);
if (stones.Count > 0)
{
for (int i = 0; i < stones.Count; i++)
{
Stone stone = stones.ElementAt(i);
// Interpolate is used to render object at place where player expects to see object,
// but not, where the object actually is!
canvas.DrawBitmap(stone.Bitmap, (float)(stone.X), (float)(stone.Y - (stone.Speed * interpolate)), null);
}
}
canvas.DrawText(score.ToString(), 5, 35, scorePaint);
surfaceHolder.UnlockCanvasAndPost(canvas);
}
