[C21] Implemented Ruxa, Patient Professor

Mage/src/main/java/mage/filter/predicate/mageobject/NoAbilityPredicate.java

@@ -0,0 +1,69 @@
+package mage.filter.predicate.mageobject;
+
+import mage.MageObject;
+import mage.abilities.Abilities;
+import mage.abilities.Ability;
+import mage.abilities.SpellAbility;
+import mage.abilities.keyword.special.JohanVigilanceAbility;
+import mage.cards.Card;
+import mage.filter.predicate.Predicate;
+import mage.game.Game;
+
+import java.util.Objects;
+
+/**
+ * @author anonymous
+ */
+public enum NoAbilityPredicate implements Predicate<MageObject> {
+    instance;
+
+    // Muraganda Petroglyphs gives a bonus only to creatures that have no rules text at all. This includes true vanilla
+    // creatures (such as Grizzly Bears), face-down creatures, many tokens, and creatures that have lost their abilities
+    // (due to Ovinize, for example). Any ability of any kind, whether or not the ability functions in the on the
+    // battlefield zone, including things like “Cycling {2}” means the creature doesn’t get the bonus.
+    // (2007-05-01)
+
+    @Override
+    public boolean apply(MageObject input, Game game) {
+        boolean isFaceDown = false;
+        Abilities<Ability> abilities;
+        if (input instanceof Card) {
+            abilities = ((Card) input).getAbilities(game);
+            isFaceDown = ((Card) input).isFaceDown(game);
+        } else {
+            abilities = input.getAbilities();
+        }
+        if (isFaceDown) {
+            // Some Auras and Equipment grant abilities to creatures, meaning the affected creature would no longer
+            // get the +2/+2 bonus. For example, Flight grants flying to the enchanted creature. Other Auras and
+            // Equipment do not, meaning the affected creature would continue to get the +2/+2 bonus. For example,
+            // Dehydration states something now true about the enchanted creature, but doesn’t give it any abilities.
+            // Auras and Equipment that grant abilities will use the words “gains” or “has,” and they’ll list a keyword
+            // ability or an ability in quotation marks.
+            // (2007-05-01)
+
+            for (Ability ability : abilities) {
+                if (ability.getWorksFaceDown()) {
+                    // inner face down abilities like turn up and becomes creature
+                    continue;
+                }
+                if (!Objects.equals(ability.getClass(), SpellAbility.class) && !ability.getClass().equals(JohanVigilanceAbility.class)) {
+                    return false;
+                }
+            }
+            return true;
+        }
+
+        for (Ability ability : abilities) {
+            if (!Objects.equals(ability.getClass(), SpellAbility.class) && !ability.getClass().equals(JohanVigilanceAbility.class)) {
+                return false;
+            }
+        }
+        return true;
+    }
+
+    @Override
+    public String toString() {
+        return "with no abilities";
+    }
+}