/// <summary>
/// Update wave, updating behavior of all enemies.
/// Check collisions against player and self, but not other waves
/// </summary>
/// <param name="gameTime"></param>
/// <param name="player"></param>
/// <param name="blackHole"></param>
/// <param name="weapon1"></param>
/// <param name="weapon2"></param>
public void Update(GameTime gameTime, Spaceman player,
BlackHole blackHole, Weapon weapon1, Weapon weapon2)
{
if (_startTimer >= TimeSpan.Zero) //not started yet
{
_startTimer -= gameTime.ElapsedGameTime;
if (_startTimer < TimeSpan.Zero)
{
Active = true; //activate if start timer complete
setPosition(blackHole.Position); //set first spawn position
}
}
if (!Active)
return; //don't update if not active
//play particle effect if existant
if (_portalEffect != null)
{
//spawn particles if still spawning enemies
if (_spawnedSoFar < _numEnemies)
{
_portalEffect.Spawn(_spawnLocation, 90.0f + _portalAngle, gameTime.ElapsedGameTime, Vector2.Zero);
_portalEffect.Spawn(_spawnLocation, -90.0f + _portalAngle, gameTime.ElapsedGameTime, Vector2.Zero);
}
_portalAngle += (float)gameTime.ElapsedGameTime.TotalSeconds * PORTAL_ROTATION_RATE;
_portalEffect.Update(gameTime);
if (_activationDelay >= TimeSpan.Zero) //gradually increase particle intensity
{
_portalEffect.IntensityFactor = 1.0f - (float)_activationDelay.TotalSeconds / ACTIVATION_DELAY_SECONDS;
}
}
//only start spawning if activation delay is elapsed.
//Otherwise, just start particleeffect and don't spawn enemies yet
if (_activationDelay > TimeSpan.Zero)
{
_activationDelay -= gameTime.ElapsedGameTime;
return;
}
//run spawning logic
spawn(gameTime, _spawnLocation, blackHole.Position);
//update all enemies in wave
bool allDestroyed = true; //check if all enemies destroyed
for (int i = _enemies.Length - 1; i >= 0; i--)
{
if (_enemies[i].UnitLifeState == PhysicalUnit.LifeState.Destroyed)
continue; //don't update destroyed units
allDestroyed = false; //found one that isn't destroyed
for (int j = i - 1; j >= 0; j--)
{
//check collision against other enemies
_enemies[i].CheckAndApplyUnitCollision(_enemies[j]);
}
_enemies[i].CheckAndApplyUnitCollision(player);
_enemies[i].Update(gameTime, player.Position, Vector2.Zero);
blackHole.ApplyToUnit(_enemies[i], gameTime);
weapon1.CheckAndApplyCollision(_enemies[i]);
weapon2.CheckAndApplyCollision(_enemies[i]);
}
//stay active unless it is not a trickle wave and all enemies are destroyed
Active = Active && (_isTrickleWave || !allDestroyed);
}
/// <summary>
/// Update wave, updating behavior of all enemies.
/// Check collisions against player and self, but not other waves
/// Check weapon collisions against player
/// </summary>
/// <param name="gameTime"></param>
/// <param name="player"></param>
/// <param name="blackHole"></param>
/// <param name="weapon1"></param>
/// <param name="weapon2"></param>
public virtual void Update(GameTime gameTime, Spaceman player,
BlackHole blackHole, Weapon weapon1, Weapon weapon2, InventoryManager inventory, Unicorn[] unicorns)
{
if (!Active) { return; }
//update all enemies in wave
bool allDestroyed = true; //check if all enemies destroyed
for (int i = _bodies.Length - 1; i >= 0; i--)
{
if (_bodies[i].UnitLifeState != PhysicalBody.LifeState.Destroyed)
{
allDestroyed = false; //found one that isn't destroyed
}
if (!_bodies[i].Updates)
continue; //don't update units that shouldn't be updated
for (int j = i - 1; j >= 0; j--)
{
//check collision against other enemies in same wave
_bodies[i].CheckAndApplyUnitCollision(_bodies[j]);
if (_bodies[i] is Obstacle)
{
(_bodies[i] as Obstacle).CheckAndApplyEffect(_bodies[j], gameTime.ElapsedGameTime);
}
}
for (int j = 0; j < unicorns.Length; j++)
{
//check collision against unicorns
unicorns[j].CheckAndApplyCollision(_bodies[i], gameTime);
}
_bodies[i].CheckAndApplyUnitCollision(player);
if (_bodies[i] is Enemy)
{
(_bodies[i] as Enemy).CheckAndApplyWeaponCollision(player, gameTime.ElapsedGameTime);
(_bodies[i] as Enemy).Update(gameTime, player.Position, blackHole, _levelBounds);
}
else
{
(_bodies[i] as Obstacle).Update(gameTime, _levelBounds);
(_bodies[i] as Obstacle).CheckAndApplyEffect(player, gameTime.ElapsedGameTime);
}
blackHole.ApplyToUnit(_bodies[i], gameTime);
if (weapon1 != null)
{
weapon1.CheckAndApplyCollision(_bodies[i], gameTime.ElapsedGameTime);
}
if (weapon2 != null)
{
weapon2.CheckAndApplyCollision(_bodies[i], gameTime.ElapsedGameTime);
}
inventory.CheckCollisions(gameTime, _bodies[i]);
}
trySpawnObstacle(gameTime.ElapsedGameTime, blackHole.Position);
_allDestroyed = allDestroyed;
}