Work on cost overflow calculations

src/engine/gameManager/ForgeManager.java

@@ -31,25 +31,6 @@ public enum ForgeManager implements Runnable {
     public static final AtomicInteger wordOrderCounter = new AtomicInteger(0);
     public static HashMap<Item, WorkOrder> oven = new HashMap<Item, WorkOrder>();
 
-    public static HashMap<mbEnums.ResourceType, Integer> calcWarehouseOverflow(Warehouse warehouse, HashMap<mbEnums.ResourceType, Integer> cost_map) {
-
-        // Method returns a map of resourceType that a transaction overdrafts.
-
-        HashMap<mbEnums.ResourceType, Integer> overflowMap = new HashMap<>();
-
-        for (mbEnums.ResourceType resourceType : cost_map.keySet()) {
-
-            int debit = warehouse.resources.get(resourceType) - cost_map.get(resourceType);
-
-            // Locked resources are always unavailable
-
-            if (debit < 0 || warehouse.locked.contains(resourceType))
-                overflowMap.put(resourceType, debit);
-        }
-
-        return overflowMap;
-    }
-
     @Override
     public void run() {
 
@@ -238,4 +219,41 @@ public enum ForgeManager implements Runnable {
 
         return production_cost;
     }
+
+    public static HashMap<mbEnums.ResourceType, Integer> calculateCostOverflow(WorkOrder workOrder) {
+
+        HashMap<mbEnums.ResourceType, Integer> costMap = new HashMap<>();
+        Warehouse warehouse;
+
+        // See if we can meet gold only requirements and early exit
+
+        if (workOrder.production_cost_total.size() == 1) {
+            if (workOrder.vendor.building.getStrongboxValue() > workOrder.production_cost_total.get(mbEnums.ResourceType.GOLD))
+                return costMap;
+        }
+
+        // Gold deficit exists so a warehouse is required
+
+        warehouse = workOrder.vendor.building.getCity() == null ? null : workOrder.vendor.building.getCity().warehouse;
+
+        if (warehouse == null)
+            return workOrder.production_cost_total;
+
+        // Method returns a map of resourceType that a transaction overdrafts.
+
+        HashMap<mbEnums.ResourceType, Integer> overflowMap = new HashMap<>();
+
+        for (mbEnums.ResourceType resourceType : workOrder.production_cost_total.keySet()) {
+
+            int debit = warehouse.resources.get(resourceType) - workOrder.production_cost_total.get(resourceType);
+
+            // Locked resources are always unavailable
+
+            if (debit < 0 || warehouse.locked.contains(resourceType))
+                overflowMap.put(resourceType, debit);
+        }
+
+        return overflowMap;
+    }
+
 }