Implemented High Alert

Mage/src/main/java/mage/abilities/effects/common/ruleModifying/CombatDamageByToughnessEffect.java

@@ -0,0 +1,62 @@
+
+package mage.abilities.effects.common.ruleModifying;
+
+import mage.abilities.Ability;
+import mage.abilities.effects.ContinuousEffectImpl;
+import mage.constants.Duration;
+import mage.constants.Layer;
+import mage.constants.Outcome;
+import mage.constants.SubLayer;
+import mage.filter.common.FilterCreaturePermanent;
+import mage.filter.predicate.permanent.ControllerIdPredicate;
+import mage.game.Game;
+
+/**
+ * @author TheElk801
+ */
+public class CombatDamageByToughnessEffect extends ContinuousEffectImpl {
+
+    private final FilterCreaturePermanent filter;
+    private final boolean onlyControlled;
+
+    public CombatDamageByToughnessEffect(FilterCreaturePermanent filter, boolean onlyControlled) {
+        super(Duration.WhileOnBattlefield, Outcome.Detriment);
+        this.filter = filter;
+        this.onlyControlled = onlyControlled;
+        staticText = "Each " + filter.getMessage() + (onlyControlled ? " you control" : "") +
+                " assigns combat damage equal to its toughness rather than its power";
+    }
+
+    public CombatDamageByToughnessEffect(final CombatDamageByToughnessEffect effect) {
+        super(effect);
+        this.filter = effect.filter;
+        this.onlyControlled = effect.onlyControlled;
+    }
+
+    @Override
+    public CombatDamageByToughnessEffect copy() {
+        return new CombatDamageByToughnessEffect(this);
+    }
+
+    @Override
+    public boolean apply(Layer layer, SubLayer sublayer, Ability source, Game game) {
+        // Change the rule
+        FilterCreaturePermanent filterPermanent = filter.copy();
+        if (onlyControlled) {
+            filterPermanent.add(new ControllerIdPredicate(source.getControllerId()));
+        }
+        game.getCombat().setUseToughnessForDamage(true);
+        game.getCombat().addUseToughnessForDamageFilter(filterPermanent);
+        return true;
+    }
+
+    @Override
+    public boolean apply(Game game, Ability source) {
+        return false;
+    }
+
+    @Override
+    public boolean hasLayer(Layer layer) {
+        return layer == Layer.RulesEffects;
+    }
+}