implemented multiblock structure

src/main/java/org/kapelle/multiblock/MultiblockStructure.java

@@ -0,0 +1,37 @@
+package org.kapelle.multiblock;
+
+import org.bukkit.Location;
+import org.bukkit.util.BlockVector;
+
+import java.util.List;
+
+public class MultiblockStructure {
+
+    List<List<List<BlockComponent>>> structure;
+
+    public MultiblockStructure(List<List<List<BlockComponent>>> structure){
+        this.structure = structure;
+    }
+
+    private BlockComponent getComponent(int x, int y, int z){
+        return structure.get(x).get(y).get(z);
+    }
+
+    public boolean isValid(Location location, BlockVector offset){
+        for (int x = 0; x < structure.size(); x++) {
+            for (int y = 0; y < structure.get(x).size(); y++) {
+                for (int z = 0; z < structure.get(x).get(y).size(); z++) {
+
+                    BlockComponent currentComponent = getComponent(x,y,z);
+                    Location globalBlockLocation = location.clone().subtract(offset);
+
+                    if(!currentComponent.isValidBlock(globalBlockLocation)){
+                        return false;
+                    }
+                }
+            }
+        }
+
+        return true;
+    }
+}