Class DrawCardSpell

java.lang.Object
net.demilich.metastone.game.spells.Spell
net.demilich.metastone.game.spells.DrawCardSpell
All Implemented Interfaces:
java.io.Serializable, HasDesc<SpellDesc>
Direct Known Subclasses:
DrawCardAndDoSomethingSpell

public class DrawCardSpell
extends Spell
Draws SpellArg.VALUE cards from the top of the player's deck.

Casts the SpellArg.SPELL sub-spell with the newly drawn card as the EntityReference.OUTPUT.

The method used to draw cards from the deck will trigger fatigue damage if the deck is empty. If an effect puts a card into the deck on the (n-1)th sub spell just before attempting the n-th draw, this spell will draw it correctly.

For example, to draw a card and set its cost to 1:

   {
     "class": "DrawCardSpell",
     "spell": {
       "class": "CardCostModifierSpell",
       "target": "OUTPUT",
       "cardCostModifier": {
         "class": "CardCostModifier",
         "target": "SELF",
         "operation": "SET",
         "value": 1
       }
     }
   }
 
Observe that the target of the "CardCostModifierSpell" subspell is EntityReference.OUTPUT, which is the card that you actually drew.
See Also:
to draw a specific card from the deck., Serialized Form
  • Constructor Details

  • Method Details

    • create

      public static SpellDesc create()
    • create

      public static SpellDesc create​(int count)
    • onCast

      @Suspendable protected void onCast​(GameContext context, Player player, SpellDesc desc, Entity source, Entity target)
      Description copied from class: Spell
      Implementations of onCast are the meat-and-bones of a spell's effects. This should actually call a variety of methods in GameLogic, generate cards using SpellUtils.getCards(GameContext, Player, Entity, Entity, SpellDesc), interpret SpellArg keys in the desc, etc.

      Observe that subclasses of Spell mostly just need to implement this function. Also, observe that instances of Spell are stateless: all the state is provided as arguments to this function.

      Specified by:
      onCast in class Spell
      Parameters:
      context - The game context
      player - The casting player
      desc - The collection of SpellArg keys and values that are interpreted by the implementation of this function to actually cause effects in a game
      source - The entity from which this effect is happening (typically a card or a minion if it's a battlecry).
      target - The particular target of this invocation of the spell. When a spell hits multiple targets, like an AoE damage effect, this method is called once for each target in the list of targets.
      See Also:
      for an example of a complex spell implementation.