public void RemoveEffect(Effect effect)
{
effect.Remove();
ActiveEffects.Remove(effect);
}
/// <summary>
/// Check for invalid game state, and take necessary actions
/// </summary>
private void CheckStateBasedActions()
{
// Remove any effects that come from permanents that have left the battlefield
foreach (ContinuousEffect effect in new List <Effect>(ActiveEffects))
{
foreach (var card in Battlefield)
{
effect.UnmodifyObject(this, card);
}
if (effect.Source is Card)
{
var card = effect.Source as Card;
if (card.IsAPermanent)
{
if (!Battlefield.Contains(card))
{
ActiveEffects.Remove(effect);
}
}
}
}
// Add any effects from permanents that are on the battlefield
foreach (var permanent in Battlefield)
{
foreach (ContinuousEffect effect in permanent.Effects)
{
if (!ActiveEffects.Contains(effect))
{
ActiveEffects.Add(effect);
}
}
}
// Iterate over each active effect once for each active effect. This is likely overkill, but there's not a better way to make sure all interactions are applied.
for (int i = 0; i < ActiveEffects.Count; i++)
{
foreach (var effect in ActiveEffects)
{
foreach (var card in Battlefield)
{
effect.ModifyObject(this, card);
}
}
}
// Kill any creatures that have 0 toughness, or have sustained enough damage to be destroyed and don't have indestructible
foreach (var player in _players)
{
var creatures = player.Battlefield.Creatures.ToList();
var deadCreatures = creatures.Where(c => c.IsDead).ToList();
foreach (var creature in deadCreatures)
{
MoveFromBattlefieldToGraveyard(creature);
}
var planeswalkers = player.Battlefield.Planeswalkers.ToList();
var deadPlaneswalkers = planeswalkers.Where(c => c.IsDead).ToList();
foreach (var planeswalker in deadPlaneswalkers)
{
MoveFromBattlefieldToGraveyard(planeswalker);
}
}
// Any players with 0 life total lose the game
Dictionary <Player, string> _deadPlayers = new Dictionary <Player, string>();
foreach (var player in _players)
{
if (player.LifeTotal <= 0)
{
// Player has Died
_deadPlayers.Add(player, "Life Total has Reached Zero");
}
}
// Any players that have attempted to draw from an empty library lose the game
foreach (var player in _players)
{
if (player.PlayerAttemptedToDrawIntoEmptyLibrary)
{
// Player has Died
_deadPlayers.Add(player, "Player Attempted to Draw into an Empty Library");
}
}
// Any players with 10 or more poison counters lose the game
foreach (var player in _players)
{
if (player.Counters.Count(c => c == CounterType.Poison) >= 10)
{
_deadPlayers.Add(player, "Player has accumulated 10 poison counters");
}
}
// TODO: If an effect has caused a player to win the game, all other players lose
// If All Players Lost Simultaneously, then it's a Draw
if (_players.Except(_deadPlayers.Keys).Count() == 0)
{
throw new GameEndedInDrawException();
}
// If a player has lost the game, remove them from the _players list.
foreach (var player in _deadPlayers.Keys)
{
PlayerLostTheGame?.Invoke(this, player, _deadPlayers[player]);
// Active Player gets removed after it gets changed to the next player
if (player != ActivePlayer)
{
_players.Remove(player);
_losingPlayers.Add(player);
}
}
// If only 1 players remains, that player won the game
if (_players.Except(_deadPlayers.Keys).Count() == 1)
{
throw new PlayerWonTheGameException(_players.Except(_deadPlayers.Keys).First(), "Last Man Standing");
}
// If the active player died, go to the start of the next player's turn
if (_deadPlayers.ContainsKey(ActivePlayer))
{
throw new ActivePlayerLostTheGameException(_deadPlayers[ActivePlayer]);
}
foreach (var player in _players)
{
foreach (var card in player.Graveyard)
{
if (card.IsAToken)
{
player.Graveyard.Remove(card);
}
else if (card.IsCopying != null)
{
card.StopCopying(card.IsCopying, card.copyingSource);
}
}
}
// Legend Rule (players cannot control more than 1 copy of a legendary permanent with the same name
foreach (var player in _players)
{
// Create a list to hold all the legends that will be removed
var sacrificedLegends = new List <Card>();
// While the player has duplicate legends
while (player.Battlefield.Except(sacrificedLegends).Any(card => card.IsLegendary && player.Battlefield.Except(sacrificedLegends).Count(c => c.Name == card.Name && c.IsLegendary) > 1))
{
var playerControlledLegends = player.Battlefield.Except(sacrificedLegends).Where(card => card.IsLegendary && player.Battlefield.Except(sacrificedLegends).Count(c => c.Name == card.Name && c.IsLegendary) > 1).ToList();
var selected = player.MakeChoice("You control duplicate legends. Choose one to sacrifice", 1, playerControlledLegends).First();
sacrificedLegends.Add(selected);
}
// If the player had to sacrifice permanents, then sacrifice them
if (sacrificedLegends.Count > 0)
{
// If the player needed to sacrifice more than 1 permanent, then they need to sort them because they enter the graveyard one at a time
if (sacrificedLegends.Count > 1)
{
sacrificedLegends = player.Sort("Choose the order that you wish these permanents to enter the graveyard", sacrificedLegends);
}
foreach (var permanent in sacrificedLegends)
{
MoveFromBattlefieldToGraveyard(permanent);
}
}
}
// Check State Triggered Abilities
CheckForTriggeredAbilities();
}
public void AddEffect(Effect effect)
{
effect.ApplyEffect(this);
ActiveEffects.Add(effect);
}
