/// <summary>
/// Main game loop, handling player and guard movement, explosions, etc.
/// </summary>
private void GameLoop()
{
if (_bomb == null || !_bomb.Detonated)
{
// Player and guards cannot move once the bomb detonates.
Paper = Colors.Black;
Print(_playerRow, _playerCol, " ");
if (LastKeyPress == Key.Up && _playerRow > 1 && !_map[_playerRow - 1, _playerCol])
{
_playerRow--;
}
else if (LastKeyPress == Key.Down && _playerRow < ScreenRows - 1 && !_map[_playerRow + 1, _playerCol])
{
_playerRow++;
}
else if (LastKeyPress == Key.Left && _playerCol > 0 && !_map[_playerRow, _playerCol - 1])
{
_playerCol--;
}
else if (LastKeyPress == Key.Right && _playerCol < ScreenCols - 1 && !_map[_playerRow, _playerCol + 1])
{
_playerCol++;
}
else if (LastKeyPress == Key.Space && _bomb == null)
{
_bomb = new Bomb(
this,
_map,
_playerRow,
_playerCol);
}
Pen = Colors.Cyan;
Print(_playerRow, _playerCol, "¬a");
// Guards move at half the speed of the player
if (_frameCount % 2 == 0)
{
foreach (var guard in _guards)
{
guard.Draw(_playerRow, _playerCol);
}
}
foreach (var guard in _guards)
{
var shot = guard.ShootIfClear(_playerRow, _playerCol);
if (shot)
{
_playerKilled = true;
_state = GameState.GameOver;
break;
}
}
_frameCount++;
}
if (_bomb != null && !_bomb.ExplosionFinished)
{
// Draw the bomb
_bomb.Draw(
_playerRow,
_playerCol,
_guards,
ref _score);
Paper = Colors.Blue;
Pen = Colors.White;
Print(0, 53, _score.ToString("D5"));
if (_bomb.ExplosionFinished)
{
_playerKilled = _bomb.PlayerKilled;
_state = GameState.GameOver;
}
}
}
private void StartNewGame()
{
_map = new bool[ScreenRows, ScreenCols];
// Draw warehouse crates of different shapes.
Paper = Colors.RosyBrown;
Pen = Colors.SaddleBrown;
// 2x2
for (var i = 0; i < 250; i++)
{
var r = _rnd.Next(1, ScreenRows - 1);
var c = _rnd.Next(0, ScreenCols - 1);
Print(r, c, "¬b¬b");
Print(r + 1, c, "¬b¬b");
_map[r, c] = true;
_map[r + 1, c] = true;
_map[r, c + 1] = true;
_map[r + 1, c + 1] = true;
}
// 2x1
for (var i = 0; i < 100; i++)
{
var r = _rnd.Next(1, ScreenRows);
var c = _rnd.Next(0, ScreenCols - 1);
Print(r, c, "¬b¬b");
_map[r, c] = true;
_map[r, c + 1] = true;
}
// 1x2
for (var i = 0; i < 100; i++)
{
var r = _rnd.Next(1, ScreenRows - 1);
var c = _rnd.Next(0, ScreenCols);
Print(r, c, "¬b");
Print(r + 1, c, "¬b");
_map[r, c] = true;
_map[r + 1, c] = true;
}
// Row 0 is reserved for scores and messages. There won't be any crates drawn in there, but
// configure the map to ensure guards don't move into that row.
for (var c = 0; c < ScreenCols; c++)
{
_map[0, c] = true;
}
Paper = Colors.Black;
// Position the player and guard(s) at random locations.
GenerateRandomCharacterPosition(out var row, out var col);
_playerRow = row;
_playerCol = col;
_guards = new List <SecurityGuard>();
for (var i = 0; i < _numGuards; i++)
{
double distance;
do
{
GenerateRandomCharacterPosition(out row, out col);
// Ensure that the guards aren't positioned too close to the player.
distance = Math.Sqrt(Math.Pow(Math.Abs(row - _playerRow), 2) + Math.Pow(Math.Abs(col - _playerCol), 2));
}while (distance < 15);
var guard = new SecurityGuard(this, row, col, _map);
_guards.Add(guard);
}
Paper = Colors.Blue;
Print(0, 0, new string(' ', ScreenCols));
Pen = Colors.Cyan;
Print(0, 46, "Score:");
_frameCount = 0;
_score = 0;
_playerKilled = false;
_bomb = null;
_state = GameState.InGame;
}
