Merge pull request #2411 from Eirkei/AshlingsPrerogativeImplemented

Ashling's Prerogative implemented

Mage/src/main/java/mage/abilities/effects/common/PermanentsEnterBattlefieldTappedEffect.java

@@ -0,0 +1,77 @@
+/*
+ * To change this license header, choose License Headers in Project Properties.
+ * To change this template file, choose Tools | Templates
+ * and open the template in the editor.
+ */
+package mage.abilities.effects.common;
+
+import mage.abilities.Ability;
+import mage.abilities.effects.ReplacementEffectImpl;
+import mage.constants.Duration;
+import mage.constants.Outcome;
+import mage.filter.FilterPermanent;
+import mage.game.Game;
+import mage.game.events.EntersTheBattlefieldEvent;
+import mage.game.events.GameEvent;
+import mage.game.permanent.Permanent;
+
+/**
+ *
+ * @author Eirkei
+ */
+public class PermanentsEnterBattlefieldTappedEffect extends ReplacementEffectImpl {
+    protected FilterPermanent filter;
+    
+    public PermanentsEnterBattlefieldTappedEffect() {
+        this(new FilterPermanent());
+    }
+    
+    public PermanentsEnterBattlefieldTappedEffect(FilterPermanent filter) { 
+        super(Duration.WhileOnBattlefield, Outcome.Tap);
+        this.filter = filter;
+        this.setText();
+    }
+
+    public PermanentsEnterBattlefieldTappedEffect(final PermanentsEnterBattlefieldTappedEffect effect) {
+        super(effect);
+        
+        if (effect.filter != null){
+            this.filter = effect.filter.copy();
+        }
+    }
+
+    @Override
+    public boolean replaceEvent(GameEvent event, Ability source, Game game) {
+        Permanent target = ((EntersTheBattlefieldEvent) event).getTarget();
+        
+        if (target != null) {
+            target.tap(game);
+        }
+        
+        return false;
+    }
+
+    @Override
+    public boolean checksEventType(GameEvent event, Game game) {
+        return event.getType() == GameEvent.EventType.ENTERS_THE_BATTLEFIELD;
+    }
+
+    @Override
+    public boolean applies(GameEvent event, Ability source, Game game) {
+        Permanent permanent = ((EntersTheBattlefieldEvent) event).getTarget();
+
+        return permanent != null && filter.match(permanent, source.getSourceId(), event.getPlayerId(), game);
+    }
+
+    @Override
+    public PermanentsEnterBattlefieldTappedEffect copy() {
+        return new PermanentsEnterBattlefieldTappedEffect(this);
+    }
+    
+    private void setText() {
+        StringBuilder sb = new StringBuilder();
+        sb.append(filter.getMessage());
+        sb.append(" enter the battlefield tapped");        
+        staticText = sb.toString();
+    }
+}