private void SpawnAliens()
{
const int buffer = 100;
var minLeft = Camera.Main.AbsoluteLeftXEdgeAt(0) + buffer;
var(rowCount, columnCount) = GetAlienCounts();
for (var row = 0; row < rowCount; row++)
{
for (var column = 0; column < columnCount; column++)
{
var alien = new Alien
{
X = (column * (100 + 15)) + minLeft,
Y = AlienStartY - (row * (39 + 15))
};
AlienList.Add(alien);
}
}
CollisionManager.Self.CreateRelationship(AlienList, RightGuardRail)
.CollisionOccurred = (x, y) => HandleAlienGuideRailCollison(true);
CollisionManager.Self.CreateRelationship(AlienList, LeftGuardRail)
.CollisionOccurred = (x, y) => HandleAlienGuideRailCollison(false);
}
void CustomActivity(bool firstTimeCalled)
{
if (!IsInGame)
{
return;
}
PlayerShipInstance.Y = PlayerYPosition;
PlayerShipInstance.X = GuiManager.Cursor.WorldXAt(0);
PlayerShipInstance.EnsureStillOnScreen();
foreach (var bullet in BulletList)
{
if (!bullet.IsInView())
{
bullet.Destroy();
}
}
if (!AlienList.Any())
{
TriggerWinCondition();
return;
}
if (GuiManager.Cursor.PrimaryClick)
{
var bullet = BulletFactory.CreateNew();
bullet.X = PlayerShipInstance.X;
bullet.Y = PlayerShipInstance.Y;
bullet.Z = PlayerShipInstance.Z - 1;
bullet.YVelocity = BulletSpeed;
CollisionManager.Self.CreateRelationship(bullet, AlienList)
.CollisionOccurred = (bullet1, alien) =>
{
bullet.Destroy();
alien.Destroy();
};
}
}
