public static ActionReaction ShootReaction(Level level, GameState state)
{
Func<Level, IEnumerable<IPlayerAttackTarget>> findEnemies = l => l.CustomLevelObjects
.OfType<IPlayerAttackTarget>()
.Where(
enemy => enemy.Health > 0 &&
enemy.WorldPosition.X <=
state.Player.WorldPosition
.X +
state.Player.AttackRange).
OrderBy(
target =>
target.PlayerAttackPriority);
const int duration = 1500;
return new ActionReaction
{
Duration = duration,
CanBeIvoked = gameState => findEnemies(gameState.Level).Any(),
Invoke = gameState =>
{
var enemiesInRange = findEnemies(gameState.Level);
gameState.Player.AddScript(new PlayerShootScript(enemiesInRange)
{
ShootingTime =
duration +
gameState.ReactionProgress.
ReactionInertia
});
}
};
}
public GameState(Game game)
{
Game = game;
ActiveScripts = new List<GameEntityScript>();
BlockingHandlers = new List<object>();
Camera = new Camera2D();
Player = new Player();
Level = new Level();
Inventory = new InventoryService();
ReactionProgress = new ReactionProgressComponent();
}
protected override void OnStart(GameState state)
{
state.Player.IsMoving = true;
_level = state.Level;
base.OnStart(state);
}
public static Level FromMetadata(LevelMetadata metadata, ContentManager contentManager)
{
var backgroundMetadata = contentManager.Load<BackgroundMetadata>(metadata.Background);
var level = new Level
{
Distance = metadata.Distance,
Background = BackgroundController.FromMetadata(backgroundMetadata, contentManager),
Name = metadata.Name
};
level.Melody = contentManager.Load<SoundEffect>(metadata.Melody).CreateInstance();
if (level.Melody != null)
{
level.Melody.IsLooped = true;
level.Melody.Play();
}
foreach (var enemy in metadata.Enemies)
{
var character = EnemyMapper.GetEnemy(enemy.EnemyType, contentManager);
character.WorldPosition = enemy.Position;
level.AddEnemy(character);
}
foreach (var obstacle in metadata.Obstacles)
{
var enemy = EnemyMapper.GetEnemy(obstacle.EnemyType, contentManager);
enemy.WorldPosition = obstacle.Position;
level.AddEnemy(enemy);
}
foreach (var bossMetadata in metadata.Bosses)
{
var boss = EnemyMapper.GetBoss(bossMetadata.EnemyType, contentManager);
if (boss != null)
{
boss.WorldPosition = bossMetadata.Position;
level.AddBoss(boss);
}
}
foreach (var message in metadata.Messages)
{
level.Texts.Add(new LevelText(message.Text, message.Position));
}
return level;
}
public static void EmitParticle(Particle x, Level level)
{
x.Died += (s, e) => level.RemoveLevelObject(s as Particle);
level.AddLevelObject(x);
}
public static ActionReaction MoveReaction(Level level, GameState state)
{
return null;
}