private void LoadGameObjects()
{
var viewport = Engine.Graphics.GraphicsDevice.Viewport;
_player = new Player(_playerShip)
{
Position = new Vector2((viewport.Width / 2) - (_playerShip.Width / 2), viewport.Height - (_playerShip.Height * 1.5f)),
FireWeapons = PlayerFireWeapons
};
for (var i = 0; i < 3; i++)
{
_meteors.Add(new Meteor(_meteor)
{
Position =
new Vector2((viewport.Width / 4) + ((viewport.Width / 4) * i) - (_meteor.Width / 2), viewport.Height - (_meteor.Height * 2.5f))
});
}
for (var i = 0; i < 8; i++)
{
var x = 128 + (i * 128);
var y = 32;
var enemy = new Enemy(_enemyShip1)
{
Position = new Vector2(x, y),
Group = "Group1",
LeftViewportCollision = ViewportCollision,
RightViewportCollision = ViewportCollision
};
_enemies.Add(enemy);
}
for (var i = 0; i < 8; i++)
{
var x = 128 + (i * 128);
var y = 128;
var enemy = new Enemy(_enemyShip2)
{
Position = new Vector2(x, y),
MovementDirection = -1,
Group = "Group2",
LeftViewportCollision = ViewportCollision,
RightViewportCollision = ViewportCollision
};
_enemies.Add(enemy);
}
for (var i = 0; i < 8; i++)
{
var x = 128 + (i * 128);
var y = 224;
var enemy = new Enemy(_enemyShip3)
{
Position = new Vector2(x, y),
Group = "Group3",
LeftViewportCollision = ViewportCollision,
RightViewportCollision = ViewportCollision
};
_enemies.Add(enemy);
}
for (var i = 0; i < 8; i++)
{
var x = 128 + (i * 128);
var y = 320;
var enemy = new Enemy(_enemyShip4)
{
Position = new Vector2(x, y),
MovementDirection = -1,
Group = "Group4",
LeftViewportCollision = ViewportCollision,
RightViewportCollision = ViewportCollision
};
_enemies.Add(enemy);
}
}
private void ViewportCollision(Enemy affectedEnemy)
{
var group = _enemies.Where(e => e.Group == affectedEnemy.Group).ToList();
foreach (var enemy in group)
{
if (enemy == affectedEnemy) continue;
if (enemy.MovementDirection == -1)
{
enemy.MovementDirection = 1;
enemy.Position += new Vector2(0f, enemy.Speed);
}
else if (enemy.MovementDirection == 1)
{
enemy.MovementDirection = -1;
enemy.Position += new Vector2(0f, enemy.Speed);
}
}
}
private void EnemyBlowUp(Bullet bullet, Enemy enemy)
{
bullet.IsAlive = false;
enemy.IsEnabled = false;
enemy.IsVisible = false;
_enemiesKilled++;
_blowUp.Play();
if (_enemiesKilled >= _enemies.Count)
{
Restart();
}
}