/// <summary>
/// Instantiates projectiles
/// </summary>
/// <param name="fromPosition">Position, where projectiles start flying from</param>
/// <param name="shootDirection">Direction in which to shoot projectiles</param>
public void Shoot(Vector3 fromPosition, Vector3 shootDirection)
{
if (_shootingTimePassed > shootTreshold)
{
_shootingTimePassed = 0;
// We use LookAt to instantiate projetiles on the right place. Projectiles should be comprised from 2 parts: center point and GameObject
// which rotates around its center. GameObject is on the surface of the planet.
// We also need -1 for projectiles to appear not on the other side of the planet.
projectileTemplate.transform.LookAt(fromPosition * -1, fromPosition * -1 + shootDirection);
// Let's create a bullet and add it to the pool.
var bullet = new Bullet(Instantiate(projectileTemplate), projectileSpeed);
bulletManager.Add(bullet);
SoundManager.Instance.PlayShootingSound();
}
}
/// <summary>
/// Allows the game to run logic such as updating the world,
/// checking for collisions, gathering input, and playing audio.
/// </summary>
/// <param name="gameTime">Provides a snapshot of timing values.</param>
protected override void Update(GameTime gameTime)
{
_fire_bullet_time += gameTime.ElapsedGameTime.TotalMilliseconds;
int Highscore = 0;
var ks = Keyboard.GetState();
var ms = Mouse.GetState();
hack:
switch (_state)
{
case CGameState.MainScreen:
var ret = _mainscreen.Update(ms);
if (ret.HasValue && (ret.Value == CGameState.Quit || ret.Value == CGameState.StartGame || ret.Value == CGameState.CreditsScreen))
{
_state = ret.Value;
goto hack;
}
break;
case CGameState.CreditsScreen:
if (_creditsScreen == null)
{
LoadCreditsScreen();
}
ret = _creditsScreen.Update(ms);
if (ret.HasValue && ret.Value == CGameState.MainScreen)
{
_state = ret.Value;
goto hack;
}
break;
case CGameState.StartGame:
LoadGame();
break;
case CGameState.Playing:
if (ms.LeftButton == ButtonState.Pressed && _fire_bullet_time > 180)
{
_bullet_manager.Add(_player.GetPosition(), _player.GetDirection());
_fire_bullet_time = 0;
}
_player.Update(ks, ms);
_background_manager.Update(_wave_manager.WaveCount, _wave_manager.Highscore);
_bullet_manager.Update();
_bullet_hits_enemy.Update();
_portal_manager.Update();
_energy_storage_manager.Update();
_powerup_manager.Update(gameTime, ref _player, ref _energy_storage_manager);
_enemy_managers.Values
.ToList()
.ForEach(x => x.Update(ref Highscore, gameTime));
_wave_manager.Update(gameTime, ref Highscore);
//game over
if (_energy_storage_manager._energy_storages.Count == 0)
{
_state = CGameState.Gameover;
goto hack;
}
break;
case CGameState.Gameover:
if (_gameoverscreen == null)
{
LoadGameOver(_wave_manager.Highscore);
}
ret = _gameoverscreen.Update(ms);
if (ret.HasValue && ret.Value == CGameState.StartGame)
{
_state = ret.Value;
goto hack;
}
else if (ret.HasValue && ret.Value == CGameState.Quit)
{
_state = ret.Value;
goto hack;
}
break;
case CGameState.Quit:
Exit();
break;
}
if (ks.IsKeyDown(Keys.Escape))
{
Exit();
}
base.Update(gameTime);
}
