public override void Update(UpdateEventArgs e)
{
this.asteroidChance = Math.Min(asteroidChanceMax, this.asteroidChance + (float)e.ElapsedTimeInS * asteroidChanceIncrease);
if (this.environment.Offset > firePlanetChanceThreshold)
{
this.fireplanetChance = GameMath.Clamp(firePlanetChanceInitial, firePlanetChanceMax, this.fireplanetChance + (float)e.ElapsedTimeInS * firePlanetChanceIncrease);
}
if (this.environment.Offset > repellingPlanetChanceThreshold)
{
this.repellingPlanetChance = GameMath.Clamp(repellingPlanetChanceInitial, repellingPlanetChanceMax, this.repellingPlanetChance + (float)e.ElapsedTimeInS * repellingPlanetChanceIncrease);
}
// Check for planets out of the screen
while (!this.planets.First.Value.IsOnScreen())
{
this.environment.RemoveWorldObject(this.planets.First.Value.ID);
if (this.planets.First.Value is FirePlanet)
{
this.fireplanetCount--;
}
if (this.planets.First.Value is RepellingPlanet)
{
this.repellingPlanetCount--;
}
this.environment.Planets.RemoveFirst();
}
// Check if spacecore is still visible
if (this.spacecore != null && this.spacecore.Position.X + 645 + LevelGenerator.SideBuffer < this.environment.Offset)
{
this.environment.RemoveWorldObject("spacecore");
this.spacecore = null;
}
// Always have at least a certain amount of planets on the playfield
if (this.planets.Count < minPlanets)
{
this.generatePlanet();
}
if (GlobalRandom.NextDouble() < this.asteroidChance)
{
this.generateAsteroid();
}
if (GlobalRandom.NextDouble() < spacecoreChance && this.spacecore == null)
{
this.generateSpacecore();
}
}
private void generateSpacecore()
{
// y-coordinate
float y = 0;
do
{
y = (float)GlobalRandom.NextDouble(-345, 345);
} while (!this.checkPosition(y, 15));
this.spacecore = new Spacecore(this.environment, new Vector2(655 + SideBuffer + this.environment.Offset, y));
this.environment.AddWorldObject("spacecore", this.spacecore);
}