DateTime _lastTick = DateTime.Now; // when did we last tell the sprites that time had passed?
#endregion Fields
#region Constructors
public SpaceControl()
{
DoubleBuffered = true; // keeps redraws and screen refresh from happening at the same time
InitializeComponent(); // standard Windows Forms control init function
Ship ship = new Ship(); // create the player's ship
ship.Position = new Vector2F(100, 100);
aiship = new AIShip();
aiship.Position = new Vector2F(800, 100);
Planet planet = new Planet(); // create the big Planet
planet.Position = new Vector2F(400, 300);
float orbit = 200; // how far from the planet's center are the targets?
List<Planet> targets = new List<Planet>();
for (int i = 0; i < NumTargets; ++i)
{
// Create a target. We're using "Planet", but we could use Sprite or a custom Target class.
Planet target = new Planet();
target.ImageFileName = "Images/FlatTarget.gif"; // standard target art
target.Space = this; // add the target to the simulation
// Divide the targets uniformly around the planet.
double angle = i * 2 * Math.PI / NumTargets;
Vector2F offset = new Vector2F(Math.Cos(angle), Math.Sin(angle));
target.Position = planet.Position + offset * orbit;
}
// Add planet, AIShip and ship to simulation.
planet.Space = this;
ship.Space = this;
aiship.Space = this;
}
public Missile(Ship firer)
{
firerID = 0;
// Create a missile.
RotationInDegrees = firer.RotationInDegrees;
RotationalVelocityInDegrees = 1080; // spin 3 times per second!
ImageFileName = "Images/Missile.gif"; // default missile graphics
float delta_v = 100; // speed relative to firing ship
Position = firer.Position;
// Angle of zero has the sprite facing the top of the screen.
Velocity = firer.Velocity + new Vector2F(delta_v * Math.Sin(RotationInRadians),
- delta_v * Math.Cos(RotationInRadians));
}