Merge pull request #151 from CovertJaguar/master

Added a way for mods to share liquids

common/buildcraft/api/liquids/LiquidDictionary.java

@@ -0,0 +1,36 @@
+package buildcraft.api.liquids;
+
+import java.util.HashMap;
+import java.util.Map;
+
+/**
+ * When creating liquids you should register them with this class.
+ *
+ * @author CovertJaguar <railcraft.wikispaces.com>
+ */
+public abstract class LiquidDictionary
+{
+
+    private static Map<String, LiquidStack> liquids = new HashMap<String, LiquidStack>();
+
+    /**
+     * When creating liquids you should call this function.
+     *
+     * Upon passing it a name and liquid item it will return either
+     * a preexisting implementation of that liquid or the liquid passed in.
+     *
+     *
+     * @param name the name of the liquid
+     * @param liquid the liquid to use if one doesn't exist
+     * @return
+     */
+    public static LiquidStack getOrCreateLiquid(String name, LiquidStack liquid)
+    {
+        LiquidStack existing = liquids.get(name);
+        if(existing != null) {
+            return existing;
+        }
+        liquids.put(name, liquid);
+        return liquid;
+    }
+}