implement [LCI] Explorer's Cache

create common MoveCountersFromSourceToTargetEffect

amend

Mage/src/main/java/mage/abilities/effects/common/counter/MoveCountersFromSourceToTargetEffect.java

@@ -0,0 +1,77 @@
+package mage.abilities.effects.common.counter;
+
+import mage.abilities.Ability;
+import mage.abilities.Mode;
+import mage.abilities.effects.OneShotEffect;
+import mage.constants.Outcome;
+import mage.counters.CounterType;
+import mage.game.Game;
+import mage.game.permanent.Permanent;
+import mage.util.CardUtil;
+
+/**
+ * @author xenohedron
+ */
+public class MoveCountersFromSourceToTargetEffect extends OneShotEffect {
+
+    private final CounterType counterType;
+    private final int amount;
+
+    /**
+     * Move a +1/+1 counter from {this} onto target
+     */
+    public MoveCountersFromSourceToTargetEffect() {
+        this(CounterType.P1P1);
+    }
+
+    /**
+     * Move a counter of the specified type from {this} onto target
+     */
+    public MoveCountersFromSourceToTargetEffect(CounterType counterType) {
+        this(counterType, 1);
+    }
+
+    /**
+     * Move a specific amount of counters of the specified type from {this} onto target
+     */
+    public MoveCountersFromSourceToTargetEffect(CounterType counterType, int amount) {
+        super(Outcome.Neutral);
+        this.counterType = counterType;
+        this.amount = amount;
+    }
+
+    protected MoveCountersFromSourceToTargetEffect(final MoveCountersFromSourceToTargetEffect effect) {
+        super(effect);
+        this.counterType = effect.counterType;
+        this.amount = effect.amount;
+    }
+
+    @Override
+    public MoveCountersFromSourceToTargetEffect copy() {
+        return new MoveCountersFromSourceToTargetEffect(this);
+    }
+
+    @Override
+    public boolean apply(Game game, Ability source) {
+        Permanent sourcePermanent = source.getSourcePermanentIfItStillExists(game);
+        Permanent targetPermanent = game.getPermanent(source.getFirstTarget());
+        if (sourcePermanent == null || targetPermanent == null
+                || sourcePermanent.getId().equals(targetPermanent.getId())
+                || sourcePermanent.getCounters(game).getCount(counterType) < amount
+                || !targetPermanent.addCounters(counterType.createInstance(amount), source.getControllerId(), source, game)) {
+            return false;
+        }
+        sourcePermanent.removeCounters(counterType.createInstance(amount), source, game);
+        return true;
+    }
+
+    @Override
+    public String getText(Mode mode) {
+        if (staticText != null && !staticText.isEmpty()) {
+            return staticText;
+        }
+        return "move " + CardUtil.numberToText(amount, "a") + ' ' + counterType.getName()
+                + (amount > 1 ? " counters" : " counter") + " from {this} onto "
+                + getTargetPointer().describeTargets(mode.getTargets(), "that creature");
+    }
+}