/// <summary>
/// Main CTOR of bullet shape
/// </summary>
/// <param name="center"></param>
public ShapeBullet(PointF center, ShapeShip ship) : base(center)
{
//this is a bullet item
_eItem = eItemType.Shot;
//bullet characteristics: color, radius
_itemColor = Color.White;
_fOpacity = 255;
Radius = 6;
//calculate location of initial bullet based on
//the location of the center of the ship
float radRotation = (float)((ship._fRotation - 90) * Math.PI / 180);
float x = (float)(ship.Location.X + ship.Radius * Math.Cos(radRotation));
float y = (float)(ship.Location.Y + ship.Radius * Math.Sin(radRotation));
Location = new PointF(x, y);
//manual parameters of velocity
radRotation = (float)(ship._fRotation * Math.PI / 180);
_fXSpeed = (float)(Math.Sin(radRotation) * (int)bulletType);
_fYSpeed = (float)(Math.Cos(radRotation) * (int)bulletType * -1);
//graphicpath
_bulletPath = MakeBullet(Radius);
_bombPath = MakeBullet(Radius * (int)eBulletType.Bomb);
}
/// <summary>
/// Main CTOR of this shape, link to base shape
/// </summary>
/// <param name="center">center of this shape</param>
/// <param name="ship">current airship instance</param>
public ShapeThruster(PointF center, ShapeShip ship) : base(center)
{
//make path
_gpThruster = MakeThruster(Radius, 3);
//use ship angle to calculate thruster rotation
_fRotation = ship._fRotation + 90;
}
/// <summary>
/// Child function of async method that create a ship in specific time
/// </summary>
/// <param name="time">input time</param>
/// <param name="size"></param>
private void MakeAShip(int time, SizeF size)
{
//delay inside method, use stopwatch to get exact timing
System.Diagnostics.Stopwatch sw = new System.Diagnostics.Stopwatch();
sw.Start();
while (sw.ElapsedMilliseconds < time)
{
;
}
//random location
Point center = new Point(ClientRectangle.Width / 2, ClientRectangle.Height / 2);
lock (_oLock)
{
_Airship = new ShapeShip(center);
_Airship.IsMarkedForDeath = false;
_Thruster = new ShapeThruster(_Airship.Location, _Airship);
}
}
