Rework drawing cards and associated replacement effects; implement [WHO] River Song (#12700)

* remove unused scoring system code

* add test for Alms Collector replacement effect

* flatten draw cards into single method in PlayerImpl

* remove outdated MageAction framework

* clarify game event for drawing two or more cards

* clarify methods for getting cards from library

* implement [WHO] River Song

* fix error

* adjust library methods

* add lots of test cases for draw replacement effects

* fix #12616

* track cards drawn this way through multi draw replacement as well

* add test for River Song

* remove redundant comment

Mage/src/main/java/mage/game/Game.java

@@ -11,7 +11,6 @@ import mage.abilities.common.delayed.ReflexiveTriggeredAbility;
 import mage.abilities.effects.ContinuousEffect;
 import mage.abilities.effects.ContinuousEffects;
 import mage.abilities.effects.PreventionEffectData;
-import mage.actions.impl.MageAction;
 import mage.cards.Card;
 import mage.cards.Cards;
 import mage.cards.MeldCard;
@@ -552,8 +551,6 @@ public interface Game extends MageItem, Serializable, Copyable<Game> {
 
     boolean endTurn(Ability source);
 
-    int doAction(Ability source, MageAction action);
-
     //game transaction methods
     void saveState(boolean bookmark);
 

Mage/src/main/java/mage/game/GameImpl.java

@@ -22,7 +22,6 @@ import mage.abilities.effects.keyword.StunCounterEffect;
 import mage.abilities.keyword.*;
 import mage.abilities.mana.DelayedTriggeredManaAbility;
 import mage.abilities.mana.TriggeredManaAbility;
-import mage.actions.impl.MageAction;
 import mage.cards.*;
 import mage.cards.decks.Deck;
 import mage.cards.decks.DeckCardInfo;
@@ -3772,11 +3771,6 @@ public abstract class GameImpl implements Game {
         return true;
     }
 
-    @Override
-    public int doAction(Ability source, MageAction action) {
-        return action.doAction(source, this);
-    }
-
     @Override
     public Date getStartTime() {
         if (startTime == null) {

Mage/src/main/java/mage/game/events/DrawCardEvent.java

@@ -9,6 +9,10 @@ import java.util.UUID;
  */
 public class DrawCardEvent extends GameEvent {
 
+    private boolean fromBottom = false; // for replacement effects that draw from bottom of library instead
+
+    private int cardsDrawn = 0; // for replacement effects to keep track for "cards drawn this way"
+
     public DrawCardEvent(UUID playerId, Ability source, GameEvent originalDrawEvent) {
         super(GameEvent.EventType.DRAW_CARD, playerId, null, playerId, 0, false);
         
@@ -22,4 +26,21 @@ public class DrawCardEvent extends GameEvent {
             this.addAppliedEffects(originalDrawEvent.getAppliedEffects());
         }
     }
+
+    public void setFromBottom(boolean fromBottom) {
+        this.fromBottom = fromBottom;
+    }
+
+    public boolean isFromBottom() {
+        return fromBottom;
+    }
+
+    public void incrementCardsDrawn(int cardsDrawn) {
+        this.cardsDrawn += cardsDrawn;
+    }
+
+    public int getCardsDrawn() {
+        return cardsDrawn;
+    }
+
 }

Mage/src/main/java/mage/game/events/DrawTwoOrMoreCardsEvent.java

@@ -7,10 +7,12 @@ import java.util.UUID;
 /**
  * @author JayDi85
  */
-public class DrawCardsEvent extends GameEvent {
+public class DrawTwoOrMoreCardsEvent extends GameEvent {
 
-    public DrawCardsEvent(UUID playerId, Ability source, GameEvent originalDrawEvent, int amount) {
-        super(GameEvent.EventType.DRAW_CARDS, playerId, null, playerId, amount, false);
+    private int cardsDrawn = 0; // for replacement effects to keep track for "cards drawn this way"
+
+    public DrawTwoOrMoreCardsEvent(UUID playerId, Ability source, GameEvent originalDrawEvent, int amount) {
+        super(GameEvent.EventType.DRAW_TWO_OR_MORE_CARDS, playerId, null, playerId, amount, false);
 
         // source of draw events must be kept between replacements, example: UnpredictableCycloneTest
         this.setSourceId(originalDrawEvent == null
@@ -22,4 +24,13 @@ public class DrawCardsEvent extends GameEvent {
             this.addAppliedEffects(originalDrawEvent.getAppliedEffects());
         }
     }
+
+    public void incrementCardsDrawn(int cardsDrawn) {
+        this.cardsDrawn += cardsDrawn;
+    }
+
+    public int getCardsDrawn() {
+        return cardsDrawn;
+    }
+
 }

Mage/src/main/java/mage/game/events/GameEvent.java

@@ -75,7 +75,7 @@ public class GameEvent implements Serializable {
         ZONE_CHANGE,
         ZONE_CHANGE_GROUP, // between two specific zones only; TODO: rework all usages to ZONE_CHANGE_BATCH instead, see #11895
         ZONE_CHANGE_BATCH, // all zone changes that occurred from a single effect
-        DRAW_CARDS, // event calls for multi draws only (if player draws 2+ cards at once)
+        DRAW_TWO_OR_MORE_CARDS, // event calls for multi draws only (if player draws 2+ cards at once)
         DRAW_CARD, DREW_CARD,
         EXPLORE, EXPLORED, // targetId is exploring permanent, playerId is its controller
         ECHO_PAID,