public Ufo(FixedPointVector3 _pos, FixedPoint _diameter)
{
type = EntityType.Ufo;
originPosition = _pos;
speed = Extensions.Range(0.5f, 1f);
orbitRadius = scale;
asteroidDetectionRadius = _diameter * 5;
health = 20;
body = new CircleBody(originPosition, _diameter * (FixedPoint)0.5f, this);
body.SetLayer(type);
body.SetCollidesWith(EntityType.Asteroid, true);
body.SetCollidesWith(EntityType.Blast, true);
body.SetCollidesWith(EntityType.Placeholder, true);
body.SetCollidesWith(EntityType.Ufo, true);
//randomize rotations
if (Random.value > 0.5f)
{
orbitSpeedPerSecond = -orbitSpeedPerSecond;
}
currentOrbitAngle = Extensions.Range(0, Mathf.PI * 2);
behavior = new UfoBehavior(this);
}
/// <summary>
/// Allows the game to perform any initialization it needs to before starting to run.
/// This is where it can query for any required services and load any non-graphic
/// related content. Calling base.Initialize will enumerate through any components
/// and initialize them as well.
/// </summary>
protected override void Initialize()
{
this.IsMouseVisible = true;
var w = (float)graphics.PreferredBackBufferWidth;
var h = (float)graphics.PreferredBackBufferHeight;
CollisionEngine.Init(new Region(0, (float)w, 0, (float)h), 10);
PE = new PhysicsEngine();
var w0 = new VertWallBody(new Vector2(0, h / 2), h);
var w1 = new VertWallBody(new Vector2(w, h / 2), h);
var w2 = new HorizWallBody(new Vector2(w / 2, 0), w);
var w3 = new HorizWallBody(new Vector2(w / 2, h), w);
PE.MapBodies.Add(w0);
PE.MapBodies.Add(w1);
PE.MapBodies.Add(w2);
PE.MapBodies.Add(w3);
var c0 = new CircleBody(30, 300, new Vector2(600, h / 2));
c0.Velocity = -1000 * Vector2.UnitX;
PE.ActiveBodies.Add(c0);
Random rand = new Random();
int nx = 40;
int ny = 30;
var rad = 4f;
var buf = 0f;
var pos = new Vector2(w / 2 - nx * (2f * rad + buf) / 2f, h / 2 - ny * (2f * rad + buf) / 2f);
for (int xi = 0; xi < nx; xi++)
{
for (int yi = 0; yi < ny; yi++)
{
var cent = pos + new Vector2((2f * rad + buf) * xi, (2f * rad + buf) * yi);
var ball = new CircleBody(rad, rad, cent);
PE.ActiveBodies.Add(ball);
}
}
base.Initialize();
}
public Asteroid(FixedPointVector3 _pos, FixedPoint _scale)
{
position = _pos;
scale = _scale;
speed = Extensions.Range(1, 2);
health = 5;
type = EntityType.Asteroid;
body = new CircleBody(position, scale * (FixedPoint)0.5f, this);
body.SetLayer(type);
body.SetCollidesWith(EntityType.Ufo, true);
body.SetCollidesWith(EntityType.Asteroid, true);
body.SetCollidesWith(EntityType.Blast, true);
body.SetCollidesWith(EntityType.Placeholder, true);
behavior = new AsteroidBehavior(this);
}