Chunk generations & basic saving

core/src/main/java/mc/core/block/Block.java

@@ -25,6 +25,30 @@ import mc.core.Location;
 
 public interface Block {
 
+    static Block airBlock (int x, int y, int z) {
+        return new Block() {
+            @Override
+            public int getId() {
+                return 0;
+            }
+
+            @Override
+            public int getMeta() {
+                return 0;
+            }
+
+            @Override
+            public BlockType getBlockType() {
+                return BlockType.AIR;
+            }
+
+            @Override
+            public Location getLocation() {
+                return new Location(x, y, z);
+            }
+        };
+    }
+
     /** Block id */
     int getId();
 

core/src/main/java/mc/core/block/BlockFactory.java

@@ -1,5 +1,7 @@
 package mc.core.block;
 
+import mc.core.Location;
+
 public class BlockFactory {
 
     public Block create(BlockType blockType, int meta) {
@@ -12,6 +14,7 @@ public class BlockFactory {
     private class EmbeddedBlock extends AbstractBlock {
         EmbeddedBlock(BlockType type, int meta) {
             super(type, meta);
+            super.setLocation(new Location(0,0,0));
         }
     }
 }

core/src/main/java/mc/core/block/BlockType.java

@@ -9,7 +9,8 @@ public enum BlockType {
     BEDROCK(7, "Bedrock"),
     WATER(8, "Water"),
     SAND(12, "Sand"),
-    SNOW(32, "Snow");
+    SNOW(32, "Snow"),
+    AIR(0, "Air");
 
     @Getter
     private final int id;

core/src/main/java/mc/core/world/Chunk.java

@@ -47,6 +47,7 @@ public interface Chunk {
     int getY();
     int getZ();
 
-    Block[] getNotAirBlocks();
+    Block[] getModifiedBlocks();
     void setBlock (int x, int y, int z, Block block);
+    Block getBlock (int x, int y, int z);
 }

core/src/main/java/mc/core/world/Region.java

@@ -1,5 +1,9 @@
 package mc.core.world;
 
+import mc.core.serialization.Serializer;
+
+import java.io.IOException;
+
 /**
  * Simple world generation unit
  * 16x16x16 chunks
@@ -23,4 +27,6 @@ public interface Region {
 
     Biome getBiomeAt (int x, int z);
     void setBiome (int x, int z, Biome biome);
+
+    void save(Serializer<Chunk> chunkSerializer, Serializer<Region> regionSerializer) throws IOException;
 }