/// <summary>
/// Creates a new, unique clone of the spell.
/// Uses the effect metadata to create new instances of
/// effects too.
/// </summary>
/// <param name="owner"></param>
/// <returns></returns>
public Spell CreateInstance(Player owner)
{
var spell = new Spell
{
ID = ID,
TargetType = TargetType,
TargetGroup = TargetGroup,
UID = SID.New()
};
foreach (var effect in EffectData)
{
// Need to create a new instance of effect for every spell!
spell.Effects.Add(Game.SpellEffects.CreateInstance(effect.Name, effect.Attributes));
}
return spell;
}
/// <summary>
/// Generates a list of targets from the spell and player data,
/// then casts the spell on them.
/// </summary>
/// <param name="player">Player who is casting spell</param>
/// <param name="spell">Spell to cast</param>
/// <param name="pickedTarget">The creature/commander to target with spell, if needed.</param>
/// <returns>True if spell cast started (even if spell was blocked), false if invalid target given.</returns>
public bool Cast(Player player, Spell spell, Creature pickedTarget = null)
{
var targets = GetPossibleTargets(player, spell);
switch (spell.TargetType)
{
case TargetType.Random:
Cast(spell, new List<Creature> { targets[ServerRandom.Generator.Next(targets.Count)] });
return true;
case TargetType.Single:
if (targets.Contains(pickedTarget))
{
Cast(spell, new List<Creature> { pickedTarget });
return true;
}
return false;
case TargetType.None:
Cast(spell, targets);
return true;
default:
throw new ArgumentOutOfRangeException();
}
}
protected virtual void OnSpellCast(Spell arg1, List<Creature> arg2)
{
var handler = SpellCast;
handler?.Invoke(arg1, arg2);
}
protected virtual bool OnPreSpellCast(Spell spell)
{
// If there is any subscribers, invoke them and
// use their result. Otherwise return true!
return PreSpellCast?.Invoke(spell) ?? true;
}
protected virtual void OnPostSpellCast(Spell spell)
{
PostSpellCast?.Invoke(spell);
}
/// <summary>
/// Builds up a list of possible targets for the given spell and player.
/// </summary>
/// <param name="owner">Owner of the spell</param>
/// <param name="spell">Spell in question</param>
/// <returns></returns>
public List<Creature> GetPossibleTargets(Player owner, Spell spell)
{
var creatures = new List<Creature>();
if (spell.TargetGroup.IsFlagSet(TargetGroup.None))
{
return creatures;
}
if (spell.TargetGroup.IsFlagSet(TargetGroup.Champions))
{
if (spell.TargetGroup.IsFlagSet(TargetGroup.Allies))
{
creatures.Add(owner.Commander);
}
if (spell.TargetGroup.IsFlagSet(TargetGroup.Enemies))
{
creatures.AddRange(from p in Players where p != owner select p.Commander);
}
}
if (!spell.TargetGroup.IsFlagSet(TargetGroup.Minions)) return creatures;
if (spell.TargetGroup.IsFlagSet(TargetGroup.Allies))
{
creatures.AddRange(owner.Creatures.Where(c => !c.Commander));
}
if (spell.TargetGroup.IsFlagSet(TargetGroup.Enemies))
{
creatures.AddRange(from p in Players from c in p.Creatures where !c.Commander select c);
}
return creatures;
}
/// <summary>
/// Casts spell at specified targets, use Cast(Player, Spell, Creature) to
/// cast spells normally (with their correct targets).
/// </summary>
/// <param name="spell">Spell to cast</param>
/// <param name="targets">Targets to cast it on</param>
public void Cast(Spell spell, List<Creature> targets)
{
Console.WriteLine("CASTING: " + spell.ID);
if (!OnPreSpellCast(spell)) return;
spell.Cast(targets);
OnPostSpellCast(spell);
}
/// <summary>
/// Generates a Spell base from an XML node
/// </summary>
/// <param name="spellData">XML containing the spell data</param>
/// <param name="name">The ID the spell is to be given.</param>
/// <returns></returns>
private static Spell GetSpell(XmlNode spellData, string name)
{
// Create a new blank spell, with the given name and
// TargetGroup + Type
var spell = new Spell
{
ID = name,
TargetGroup = Conversion.StringToEnum<TargetGroup>(spellData["targetGroup"].InnerText),
TargetType = Conversion.StringToEnum<TargetType>(spellData["targetType"].InnerText)
};
// Load in the spell's effects using the generic effect loading method
XmlNode effects = spellData["effects"];
spell.EffectData.AddRange(LoadEffects(effects, EffectType.spell));
return spell;
}
