/// <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)
{
GameTime = gameTime;
if (GamePad.GetState(PlayerIndex.One).Buttons.Back == ButtonState.Pressed || Keyboard.GetState().IsKeyDown(Keys.Escape))
{
Exit();
}
EntityManager.Update();
Input.Update();
EnemySpawner.Update();
PlayerStatus.Update();
base.Update(gameTime);
}
static void HandleCollisions()
{
// handle collisions between enemies
for (int i = 0; i < enemies.Count; i++)
{
for (int j = i + 1; j < enemies.Count; j++)
{
if (IsColliding(enemies[i], enemies[j]))
{
enemies[i].HandleCollision(enemies[j]);
enemies[j].HandleCollision(enemies[i]);
}
}
}
// handle collisions between bullets and enemies
for (int i = 0; i < enemies.Count; i++)
{
for (int j = 0; j < bullets.Count; j++)
{
if (IsColliding(enemies[i], bullets[j]))
{
enemies[i].WasShot();
bullets[j].IsExpired = true;
}
}
}
// handle collisions between the player and enemies
for (int i = 0; i < enemies.Count; i++)
{
if (enemies[i].IsActive && IsColliding(PlayerShip.Instance, enemies[i]))
{
PlayerShip.Instance.Kill();
enemies.ForEach(x => x.WasShot());
bullets.ForEach(p => p.IsExpired = true);
EnemySpawner.Reset();
break;
}
}
}
public void Kill()
{
EntityManager.Reset();
EnemySpawner.Reset();
//framesUntilRespawn = 60;
PlayerStatus.RemoveLife();
PlayerStatus.ResetMultiplier();
if (PlayerStatus.Lives == 0)
{
PlayerStatus.GameOver();
GameManager.PauseGame(300, true);
}
framesUntilRespawn = PlayerStatus.IsGameOver ? 300 : 120;
var yellow = new Color(0.8f, 0.8f, 0.4f);
for (var i = 0; i < 1200; i++)
{
var speed = 18f * (1f - 1 / rand.NextFloat(1f, 10f));
var particleColor = Color.Lerp(Color.White, yellow, rand.NextFloat(0, 1));
var state = new ParticleState(rand.NextVector2(speed, speed), ParticleType.None);
GameRoot.ParticleManager.CreateParticle(Art.LineParticle, Position, particleColor, 60, new Vector2(0.7f, 0.7f), state);
}
}