Add a dimension whitelist setting for draconic ore (#48)

* Add a dimension whitelist setting for draconic ore

* Fix typo

src/main/java/com/brandon3055/draconicevolution/common/handler/ConfigHandler.java

@@ -34,6 +34,7 @@ public class ConfigHandler {
     public static boolean sumonRitualAccelerated;
     public static int[] dragonEggSpawnLocation;
     public static int[] oreGenDimentionBlacklist;
+    public static int[] oreGenDimensionWhitelist;
     public static int[] hudSettings;
     private static String[] disabledBlocksItems;
     public static List<String> disabledNamesList = new ArrayList<String>();
@@ -193,6 +194,12 @@ public class ConfigHandler {
                     "Ore gen dimension blacklist",
                     new int[0],
                     "Add the id's of dimensions you do not want draconium ore to spawn in").getIntList();
+            oreGenDimensionWhitelist = config.get(
+                    Configuration.CATEGORY_GENERAL,
+                    "Ore gen dimension whitelist",
+                    new int[0],
+                    "Add the id's of dimensions you do want draconium ore to spawn in (if empty, uses only the blacklist)")
+                    .getIntList();
             disabledBlocksItems = config.getStringList(
                     "Disabled Blocks & Items",
                     Configuration.CATEGORY_GENERAL,

src/main/java/com/brandon3055/draconicevolution/common/world/DraconicWorldGenerator.java

@@ -33,8 +33,22 @@ public class DraconicWorldGenerator implements IWorldGenerator {
                 generateNether(random, chunkX * 16, chunkZ * 16, world);
                 break;
             default:
-                for (Integer i : ConfigHandler.oreGenDimentionBlacklist) {
-                    if (i == world.provider.dimensionId) return;
+                if (ConfigHandler.oreGenDimensionWhitelist.length > 0) {
+                    boolean isWhitelisted = false;
+                    for (Integer dim : ConfigHandler.oreGenDimensionWhitelist) {
+                        if (dim == world.provider.dimensionId) {
+                            isWhitelisted = true;
+                            break;
+                        }
+                    }
+                    if (!isWhitelisted) {
+                        return;
+                    }
+                }
+                for (Integer dim : ConfigHandler.oreGenDimentionBlacklist) {
+                    if (dim == world.provider.dimensionId) {
+                        return;
+                    }
                 }
                 addOreSpawn(ModBlocks.draconiumOre, world, random, chunkX * 16, chunkZ * 16, 3, 4, 2, 2, 8);
                 break;