public void Handle(string[] fullCommand)
{
Console.Clear();
Prepare();
_difficulty = DifficultyStats.Create((Difficulty)SelectDifficulty());
Console.CursorVisible = false;
Console.Clear();
// Create some enemies.
CreateEnemies();
// Draw the Spaceship
_spaceShip.Draw();
// Prepare reset event
_gameOver = new ManualResetEvent(false);
// Start reading the keybord for movements
_cycleTimer = new Timer(ReadInput, null, 0, 30);
// Start the movement timer.
_moveElementsTimer = new Timer(MoveAllElements, null, 100, 100);
// Wait for game to finish
_gameOver.WaitOne();
Console.Clear();
Console.WriteLine("Your Score: " + _score);
Console.WriteLine("Game Over");
Console.CursorVisible = true;
Console.ReadLine();
Console.Clear();
}
/// <summary>
/// Generate and draw a new food icon
/// </summary>
/// <returns></returns>
private UiElement GenerateFood()
{
// Find coordinates not occupied by the snake
int x = 0, y = 0;
while (x == 0 && y == 0)
{
x = _rnd.Next(Console.WindowWidth);
y = _rnd.Next(Console.WindowHeight);
if (_snake.Any(e => e.PositionX == x && e.PositionY == y))
{
x = y = 0;
}
}
var food = new UiElement
{
PositionX = x,
PositionY = y,
Icon = FoodIcon,
Color = _rnd.Next(3) % 2 == 0 ? ConsoleColor.Red : ConsoleColor.Yellow
};
food.Draw();
return(food);
}
public override void Draw(GameTime gameTime, SpriteBatch batch)
{
batch.Begin();
bg.Draw(batch);
title.Draw(batch);
foreach (Button button in buttons)
{
button.Draw(batch);
}
batch.End();
}
/// <summary>
/// Creates a Bullet for the spaceship and enqueue it to the movement list.
/// </summary>
private void Shoot()
{
if (_shots.PlayerShots.Count >= _difficulty.BulletsForSpaceShip)
{
return;
}
var rocket = new UiElement()
{
PositionX = _spaceShip.PositionX, PositionY = _spaceShip.PositionY - 2, Icon = "|"
};
rocket.Draw();
_shots.PendingShots.Enqueue(rocket);
}
/// <summary>
/// Create some enemies.
/// </summary>
private void CreateEnemies()
{
var npcRows = new List <List <UiElement> >();
for (var enemyRow = 0; enemyRow < EnemyLines; enemyRow++)
{
var row = new List <UiElement>();
var ypos = (EnemyLines + 1) - enemyRow;
var icon = EnemyIcons[enemyRow];
for (var xpos = 20 + (enemyRow % 2); xpos <= 60 - (enemyRow % 2); xpos += 2)
{
var enemy = new UiElement {
PositionX = xpos, PositionY = ypos, Icon = icon
};
enemy.Draw();
row.Add(enemy);
}
npcRows.Add(row);
}
_npcRows = npcRows.ToArray();
}
/// <summary>
/// Draws the socre on the screen.
/// </summary>
/// <param name="addToScore"></param>
private void DrawScore(int addToScore)
{
_score = _score + addToScore;
_scoreUi.Icon = _score.ToString("D8");
_scoreUi.Draw();
}
/// <summary>
/// Moves the bullets of the npcs
/// </summary>
private void MoveNpcRockets()
{
var removedRockets = new List <UiElement>();
// If it is possible to fire again, then try it.
if (_shots.NpcShots.Count < _difficulty.NumberOfBulletsAtTheSameTimeFromEnemy)
{
// Get a random number if the enemy will fire or not.
if (_luckCreator.Next(1000) > _difficulty.FireFireFrequenceOfEnemy)
{
// Check the lists, only the lower line of enemies can fire
UiElement newShot = null;
while (newShot == null && _npcRows.Any(row => row.Count > 0))
{
var enemyLine = _luckCreator.Next(EnemyLines);
var enemies = _npcRows[enemyLine];
if (!enemies.Any())
{
continue;
}
var shooter = enemies[_luckCreator.Next(enemies.Count)];
newShot = new UiElement
{
PositionX = shooter.PositionX,
PositionY = shooter.PositionY + 2 + enemyLine,
Icon = "|"
};
}
if (newShot != null)
{
newShot.Draw();
_shots.NpcShots.Add(newShot);
}
}
}
// move all visible bullets.
foreach (var shot in _shots.NpcShots)
{
var nextY = shot.PositionY + 1;
if (nextY == Console.WindowHeight)
{
shot.Clear();
removedRockets.Add(shot);
continue;
}
if (_spaceShip.PositionX == shot.PositionX && _spaceShip.PositionY == nextY)
{
EndGame();
return;
}
// Move shot
shot.UpdatePosition(shot.PositionX, nextY);
}
foreach (var shot in removedRockets)
{
_shots.RemovePlayerShot(shot);
}
}