public virtual void OnUpdate()
{
// Ensures physics won't kick in while paused.
if (State == GameState.Paused)
{
GamePool.UpdatePoolForPausedGame();
}
if (State != GameState.Running)
{
return;
}
// Increase level every 30 seconds.
_totalGameTime += FrameTime.Current;
Hud.CurrentHud.SetStage((int)_totalGameTime / 30 + 1);
// Go Game Over if player destroyed.
if (_player.IsAlive == false)
{
// Avoid counting scores.
State = GameState.Paused;
if (_gameOverTime == DateTime.MinValue)
{
_gameOverTime = DateTime.Now;
Mouse.ShowCursor();
Hud.CurrentHud.ShowGameOverDialog();
}
}
// Handle dynamic spawning of tunnels, doors and lights (does not handle tunnel movement).
_levelElements.UpdateGeometry();
// Check Key input and update player speed.
if (_player.Exists)
{
_player.CheckCoolDown();
_player.UpdateSpeed();
// Rotation while moving makes the game more dynamic.
// Might be explained in an advanced tutorial.
_player.UpdateRotation();
}
// Update position of game objects including player.
GamePool.UpdatePool();
Hud.CurrentHud.SetScore(_gameData.Score);
// Add frame time and check if greater than or equal timer.
_spawnTimer += FrameTime.Current;
if (_spawnTimer >= SPAWN_EVERY_SECONDS)
{
// Reset spawn timer.
_spawnTimer = 0;
int waveType = Rand.NextInt(3);
int enemyType = Rand.NextInt(3);
// Increase speed for each difficulty level.
Vec3 waveSpeed = new Vec3(0f, -11f - (Hud.CurrentHud.Stage * 2), 0f);
if ((Enemy.WaveType)waveType == Enemy.WaveType.VerticalLine)
{
Enemy.SpawnWave(new Vec3(65, 660, 79), enemyType, Enemy.WaveType.VerticalLine, waveSpeed);
}
else if ((Enemy.WaveType)waveType == Enemy.WaveType.HorizontalLine)
{
var waveOffset = Rand.NextInt(3);
Enemy.SpawnWave(new Vec3(65, 664, 72 + waveOffset), enemyType, Enemy.WaveType.HorizontalLine, waveSpeed);
Enemy.SpawnWave(new Vec3(65, 664, 64 + waveOffset), enemyType, Enemy.WaveType.HorizontalLine, waveSpeed);
}
else if ((Enemy.WaveType)waveType == Enemy.WaveType.Diagonal)
{
Enemy.SpawnWave(new Vec3(65, 660, 79), enemyType, Enemy.WaveType.Diagonal, waveSpeed);
}
}
}
