CardActivation.adept

enum CardActivationKind (NONE, ON_ATTACK, ON_DEATH)

struct CardActivation (kind CardActivationKind) {
    func toString String {
        switch this.kind {
        case CardActivationKind::NONE,      return "none"
        case CardActivationKind::ON_ATTACK, return "on-attack"
        case CardActivationKind::ON_DEATH,  return "on-death"
        }
        return "none"
    }
    
    func defaultUnlessSet {
        if this.kind == CardActivationKind::NONE, return
        this.kind = CardActivationKind::ON_ATTACK
    }
}

func cardActivation(kind CardActivationKind) CardActivation {
    activation POD CardActivation
    activation.kind = kind
    return activation
}

func cardActivation(kind_name String) CardActivation {
    if      kind_name == "none",      return cardActivation(CardActivationKind::NONE)
    else if kind_name == "on-attack", return cardActivation(CardActivationKind::ON_ATTACK)
    else if kind_name == "on-death",  return cardActivation(CardActivationKind::ON_DEATH)
    return cardActivation(CardActivationKind::NONE)
}