private IEnumerable <bool> GetTaskSequence()
{
if (this.Pictures.Count == 0) // ? 画像が追加されていない。
{
throw new DDError();
}
int outOfCameraFrame = 0;
for (int frame = 0; ; frame++)
{
double drawX = this.X - DDGround.ICamera.X;
double drawY = this.Y - DDGround.ICamera.Y;
DDDraw.SetAlpha(this.A);
DDDraw.DrawBegin(this.Pictures[(frame / this.FramePerPicture) % this.Pictures.Count], drawX, drawY);
DDDraw.DrawRotate(this.R);
DDDraw.DrawZoom(this.Z);
DDDraw.DrawEnd();
this.X += this.XAdd;
this.Y += this.YAdd;
this.R += this.RAdd;
this.Z += this.ZAdd;
this.A += this.AAdd;
this.XAdd += this.XAdd2;
this.YAdd += this.YAdd2;
this.RAdd += this.RAdd2;
this.ZAdd += this.ZAdd2;
this.AAdd += this.AAdd2;
if (DDUtils.IsOutOfScreen(new D2Point(drawX, drawY)))
//if (DDUtils.IsOutOfCamera(new D2Point(this.X, this.Y)))
{
outOfCameraFrame++;
if (20 < outOfCameraFrame)
{
break;
}
}
else
{
outOfCameraFrame = 0;
}
if (this.A < 0.0)
{
break;
}
yield return(true);
}
}