[DMU] Implement Silver Scrutiny and fix #7326 (#9508)

Mage/src/main/java/mage/abilities/common/CastAsThoughItHadFlashIfConditionAbility.java

@@ -0,0 +1,89 @@
+package mage.abilities.common;
+
+import mage.abilities.Ability;
+import mage.abilities.condition.Condition;
+import mage.abilities.effects.ContinuousRuleModifyingEffectImpl;
+import mage.abilities.effects.common.continuous.CastAsThoughItHadFlashSourceEffect;
+import mage.constants.Duration;
+import mage.constants.Outcome;
+import mage.constants.Zone;
+import mage.game.Game;
+import mage.game.events.GameEvent;
+
+/**
+ * Implements:
+ * You may cast {this} as though it had flash if [condition that depends on X value, targets, etc.]
+ *
+ * @author awjackson
+ */
+public class CastAsThoughItHadFlashIfConditionAbility extends SimpleStaticAbility {
+
+    private final String rule;
+
+    public CastAsThoughItHadFlashIfConditionAbility(Condition condition, String rule) {
+        super(Zone.ALL, new CastAsThoughItHadFlashSourceEffect(Duration.EndOfGame));
+        this.addEffect(new CantFlashUnlessConditionEffect(condition));
+        this.setRuleAtTheTop(true);
+        this.rule = rule;
+    }
+
+    private CastAsThoughItHadFlashIfConditionAbility(final CastAsThoughItHadFlashIfConditionAbility ability) {
+        super(ability);
+        this.rule = ability.rule;
+    }
+
+    @Override
+    public CastAsThoughItHadFlashIfConditionAbility copy() {
+        return new CastAsThoughItHadFlashIfConditionAbility(this);
+    }
+
+    @Override
+    public String getRule() {
+        return rule;
+    }
+}
+
+class CantFlashUnlessConditionEffect extends ContinuousRuleModifyingEffectImpl {
+
+    private final Condition condition;
+
+    public CantFlashUnlessConditionEffect(Condition condition) {
+        super(Duration.EndOfGame, Outcome.Neutral);
+        this.condition = condition;
+    }
+
+    private CantFlashUnlessConditionEffect(final CantFlashUnlessConditionEffect effect) {
+        super(effect);
+        this.condition = effect.condition;
+    }
+
+    @Override
+    public CantFlashUnlessConditionEffect copy() {
+        return new CantFlashUnlessConditionEffect(this);
+    }
+
+    @Override
+    public boolean checksEventType(GameEvent event, Game game) {
+        return event.getType() == GameEvent.EventType.CAST_SPELL_LATE;
+    }
+
+    @Override
+    public boolean applies(GameEvent event, Ability source, Game game) {
+        if (!event.getSourceId().equals(source.getSourceId())) {
+            return false;
+        }
+        // the condition can't be evaluated until the spell is on the stack
+        if (game.inCheckPlayableState()) {
+            return false;
+        }
+        // ignore if casting as a sorcery
+        if (game.isMainPhase() && game.isActivePlayer(event.getPlayerId()) && game.getStack().size() == 1) {
+            return false;
+        }
+        // TODO: this is a hack and doesn't handle all other ways a spell could be cast as though it had flash
+        if (Boolean.TRUE.equals(game.getState().getValue("PlayFromNotOwnHandZone" + source.getSourceId()))) {
+            return false;
+        }
+        return !condition.apply(game, source);
+    }
+}