private void ResetGame()
{
if (_chopperGenerator != null)
{
_chopperGenerator.StopGenerating();
}
_bulletList.DeactivateAllObjects(obj => RemoveGameObject(obj));
_missileList.DeactivateAllObjects(obj => RemoveGameObject(obj));
_enemyList.DeactivateAllObjects(obj => RemoveGameObject(obj));
_explosionList.DeactivateAllObjects(obj => RemoveGameObject(obj));
_turretBulletList.DeactivateAllObjects(obj => RemoveGameObject(obj));
_turretList.DeactivateAllObjects(obj => RemoveGameObject(obj));
_playerSprite.Activate();
AddGameObject(_playerSprite);
// position the player in the middle of the screen, at the bottom, leaving a slight gap at the bottom
var playerXPos = _viewportWidth / 2 - _playerSprite.Width / 2;
var playerYPos = _viewportHeight - _playerSprite.Height - 30;
_playerSprite.Position = new Vector2(playerXPos, playerYPos);
_playerDead = false;
_level.Reset();
}