CostPartMana - rearrange and cleanup,

InputPayManaOfCost now takes ManaCostBeingPaid as parameter
AbilityUtils - workaroud about StringUtils.isNumeric that returned false for negative numbers

src/main/java/forge/card/ability/AbilityUtils.java

@@ -294,8 +294,6 @@ public class AbilityUtils {
         if (StringUtils.isBlank(amount)) return 0;
         final boolean startsWithPlus = amount.charAt(0) == '+';
         if(startsWithPlus) amount = amount.substring(1);
-        
-        if (StringUtils.isNumeric(amount)) return Integer.parseInt(amount);
 
         // Strip and save sign for calculations
         boolean startsWithMinus = amount.charAt(0) == '-';
@@ -303,6 +301,9 @@ public class AbilityUtils {
         if(startsWithMinus)
             amount = amount.substring(1);
 
+        // return result soon for plain numbers
+        if (StringUtils.isNumeric(amount)) return Integer.parseInt(amount) * multiplier;
+
         // These are some special cases - who is implementing them?
         if (amount.equals("ChosenX") || amount.equals("ChosenY")) {
             // isn't made yet

src/main/java/forge/card/cost/CostPartMana.java

@@ -21,6 +21,7 @@ import forge.Card;
 import forge.FThreads;
 import forge.card.ability.AbilityUtils;
 import forge.card.mana.ManaCost;
+import forge.card.mana.ManaCostBeingPaid;
 import forge.card.mana.ManaCostShard;
 import forge.card.spellability.SpellAbility;
 import forge.control.input.InputPayManaOfCostPayment;
@@ -39,6 +40,20 @@ public class CostPartMana extends CostPart {
     private ManaCost adjustedCost;
     private boolean xCantBe0 = false;
 
+    /**
+     * Instantiates a new cost mana.
+     * 
+     * @param mana
+     *            the mana
+     * @param amount
+     *            the amount
+     * @param xCantBe0 TODO
+     */
+    public CostPartMana(final ManaCost cost, boolean xCantBe0) {
+        this.cost = cost;
+        this.xCantBe0 = xCantBe0; // TODO: Add 0 to parameter's name.
+    }
+
     /**
      * Gets the mana.
      * 
@@ -49,20 +64,6 @@ public class CostPartMana extends CostPart {
         return this.cost;
     }
 
-    /**
-     * Checks for no x mana cost.
-     * 
-     * @return true, if successful
-     */
-    public final boolean hasNoXManaCost() {
-        return getAmountOfX() == 0;
-    }
-
-    /**
-     * Gets the x mana.
-     * 
-     * @return the x mana
-     */
     public final int getAmountOfX() {
         return this.cost.getShardCount(ManaCostShard.X);
     }
@@ -75,10 +76,11 @@ public class CostPartMana extends CostPart {
     }
 
     /**
-     * @param xCantBe00 the xCantBe0 to set
+     * Used to set mana cost after applying static effects that change costs.
      */
-    public void setxCantBe0(boolean xCantBe0) {
-        this.xCantBe0 = xCantBe0; // TODO: Add 0 to parameter's name.
+    public void setAdjustedMana(ManaCost manaCost) {
+        // this is set when static effects of LodeStone Golems or Thalias are applied
+        adjustedCost = manaCost;
     }
 
     /**
@@ -87,12 +89,7 @@ public class CostPartMana extends CostPart {
      * @return the mana to pay
      */
     public final ManaCost getManaToPay() {
-        // Only used for Human to pay for non-X cost first
-        if (this.adjustedCost != null ) {
-            return this.adjustedCost;
-        }
-
-        return this.cost;
+        return adjustedCost == null ? cost : adjustedCost;
     }
     
     @Override
@@ -101,37 +98,13 @@ public class CostPartMana extends CostPart {
     @Override
     public boolean isUndoable() { return true; }
     
-    /**
-     * Instantiates a new cost mana.
-     * 
-     * @param mana
-     *            the mana
-     * @param amount
-     *            the amount
-     * @param xCantBe0 TODO
-     */
-    public CostPartMana(final ManaCost cost, boolean xCantBe0) {
-        this.cost = cost;
-        this.setxCantBe0(xCantBe0);
-    }
 
-    /*
-     * (non-Javadoc)
-     * 
-     * @see forge.card.cost.CostPart#toString()
-     */
     @Override
     public final String toString() {
         return cost.toString();
     }
 
-    /*
-     * (non-Javadoc)
-     * 
-     * @see
-     * forge.card.cost.CostPart#canPay(forge.card.spellability.SpellAbility,
-     * forge.Card, forge.Player, forge.card.cost.Cost)
-     */
+
     @Override
     public final boolean canPay(final SpellAbility ability) {
         // For now, this will always return true. But this should probably be
@@ -139,36 +112,23 @@ public class CostPartMana extends CostPart {
         return true;
     }
 
-    /* (non-Javadoc)
-     * @see forge.card.cost.CostPart#payAI(forge.card.cost.PaymentDecision, forge.game.player.AIPlayer, forge.card.spellability.SpellAbility, forge.Card)
-     */
-    @Override
-    public void payAI(PaymentDecision decision, AIPlayer ai, SpellAbility ability, Card source) {
-        ComputerUtilMana.payManaCost(ai, ability);
-    }
-
-    /*
-     * (non-Javadoc)
-     * 
-     * @see
-     * forge.card.cost.CostPart#payHuman(forge.card.spellability.SpellAbility,
-     * forge.Card, forge.card.cost.Cost_Payment)
-     */
     @Override
     public final boolean payHuman(final SpellAbility ability, final GameState game) {
         final Card source = ability.getSourceCard();
-        int manaToAdd = 0;
-        if (!this.hasNoXManaCost()) {
+        ManaCostBeingPaid toPay = new ManaCostBeingPaid(getManaToPay());
+        
+        if (this.getAmountOfX() > 0) {
             // if X cost is a defined value, other than xPaid
             if (!ability.getSVar("X").equals("Count$xPaid")) {
                 // this currently only works for things about Targeted object
-                manaToAdd += AbilityUtils.calculateAmount(source, "X", ability) * this.getAmountOfX();
+                int xCost = AbilityUtils.calculateAmount(source, "X", ability) * this.getAmountOfX();
+                toPay.increaseColorlessMana(xCost);
             }
         }
-
-
-        if (!"0".equals(this.getManaToPay()) || manaToAdd > 0) {
-            InputPayment inpPayment = new InputPayManaOfCostPayment(game, this, ability, manaToAdd);
+    
+    
+        if (!toPay.isPaid()) {
+            InputPayment inpPayment = new InputPayManaOfCostPayment(game, toPay, ability);
             FThreads.setInputAndWait(inpPayment);
             if(!inpPayment.isPaid())
                 return false;
@@ -186,9 +146,18 @@ public class CostPartMana extends CostPart {
             }
         }
         return true;
-
+    
     }
 
+    /* (non-Javadoc)
+     * @see forge.card.cost.CostPart#payAI(forge.card.cost.PaymentDecision, forge.game.player.AIPlayer, forge.card.spellability.SpellAbility, forge.Card)
+     */
+    @Override
+    public void payAI(PaymentDecision decision, AIPlayer ai, SpellAbility ability, Card source) {
+        ComputerUtilMana.payManaCost(ai, ability);
+    }
+
+
     /* (non-Javadoc)
      * @see forge.card.cost.CostPart#decideAIPayment(forge.game.player.AIPlayer, forge.card.spellability.SpellAbility, forge.Card)
      */
@@ -196,13 +165,4 @@ public class CostPartMana extends CostPart {
     public PaymentDecision decideAIPayment(AIPlayer ai, SpellAbility ability, Card source) {
         return new PaymentDecision(0);
     }
-
-    /**
-     * TODO: Write javadoc for this method.
-     * @param manaCost
-     */
-    public void setAdjustedMana(ManaCost manaCost) {
-        // this is set when static effects of LodeStone Golems or Thalias are applied
-        adjustedCost = manaCost;
-    }
 }

src/main/java/forge/card/mana/ManaCostBeingPaid.java

@@ -97,8 +97,6 @@ public class ManaCostBeingPaid {
     private final ArrayList<String> manaNeededToAvoidNegativeEffect = new ArrayList<String>();
     private final ArrayList<String> manaPaidToAvoidNegativeEffect = new ArrayList<String>();
     
-    private final ManaCost originalCost;
-
     // manaCost can be like "0", "3", "G", "GW", "10", "3 GW", "10 GW"
     // or "split hybrid mana" like "2/G 2/G", "2/B 2/B 2/B"
     // "GW" can be paid with either G or W
@@ -116,7 +114,6 @@ public class ManaCostBeingPaid {
     }
 
     public ManaCostBeingPaid(ManaCost manaCost) {
-        originalCost = manaCost;
         if ( null == manaCost )
             return;
 
@@ -703,10 +700,6 @@ public class ManaCostBeingPaid {
         return this.manaPaidToAvoidNegativeEffect;
     }
 
-    public ManaCost getStartingCost() {
-        return originalCost;
-    }
-    
     public final void applySpellCostChange(final SpellAbility sa) {
         final GameState game = sa.getActivatingPlayer().getGame();
         // Beached

src/main/java/forge/control/input/InputPayManaBase.java

@@ -320,7 +320,7 @@ public abstract class InputPayManaBase extends InputSyncronizedBase implements I
 
     @Override
     public String toString() {
-        return String.format("PayManaBase %s (out of %s)", manaCost.toString(), manaCost.getStartingCost() );
+        return String.format("PayManaBase %s left", manaCost.toString() );
     }
 
     protected void handleConvokedCards(boolean isCancelled) {

src/main/java/forge/control/input/InputPayManaOfCostPayment.java

@@ -2,7 +2,6 @@ package forge.control.input;
 
 import forge.Card;
 import forge.Singletons;
-import forge.card.cost.CostPartMana;
 import forge.card.mana.ManaCostBeingPaid;
 import forge.card.spellability.SpellAbility;
 import forge.game.GameState;
@@ -11,10 +10,9 @@ import forge.view.ButtonUtil;
 
 public class InputPayManaOfCostPayment extends InputPayManaBase {
 
-    public InputPayManaOfCostPayment(final GameState game, CostPartMana costMana, SpellAbility spellAbility, int toAdd) {
+    public InputPayManaOfCostPayment(final GameState game, ManaCostBeingPaid cost, SpellAbility spellAbility) {
         super(spellAbility);
-        manaCost = new ManaCostBeingPaid(costMana.getManaToPay());
-        manaCost.increaseColorlessMana(toAdd);
+        manaCost = cost;
     }
 
     private static final long serialVersionUID = 3467312982164195091L;