Implement attributing locking when reforging

src/main/java/emu/nebula/util/CustomIntArray.java

@@ -0,0 +1,46 @@
+package emu.nebula.util;
+
+import it.unimi.dsi.fastutil.ints.IntArrayList;
+
+public class CustomIntArray extends IntArrayList {
+    private static final long serialVersionUID = -3887905394107667439L;
+    
+    public CustomIntArray() {
+        super();
+    }
+    
+    public void add(int index, int value) {
+        while (index > this.size()) {
+            super.add(0);
+        }
+        
+        super.add(index, value);
+    }
+    
+    @Override
+    public boolean add(int value) {
+        for (int i = 0; i < this.size(); i++) {
+            if (this.getInt(i) == 0) {
+                this.set(i, value);
+                return true;
+            }
+        }
+        
+        return super.add(value);
+    }
+    
+    /**
+     * Returns the amount of non-zero values in this array
+     */
+    public int getValueCount() {
+        int realSize = 0;
+        
+        for (int i = 0; i < super.size(); i++) {
+            if (this.getInt(i) != 0) {
+                realSize++;
+            }
+        }
+        
+        return realSize;
+    }
+}