Collection,IterableArray: add insert(E, int)

2 files changed, 12 insertions, 0 deletions

diff --git a/core/src/ch/asynk/rustanddust/engine/util/Collection.java b/core/src/ch/asynk/rustanddust/engine/util/Collection.java
index 67ea169..1feb937 100644
--- a/core/src/ch/asynk/rustanddust/engine/util/Collection.java
+++ b/core/src/ch/asynk/rustanddust/engine/util/Collection.java
@@ -20,6 +20,8 @@ public interface Collection<E> extends Iterator, Iterable<E>
 
     public boolean add(E e);
 
+    public boolean insert(E e, int idx);
+
     public E remove(int idx);
 
     public boolean remove(E e);
diff --git a/core/src/ch/asynk/rustanddust/engine/util/IterableArray.java b/core/src/ch/asynk/rustanddust/engine/util/IterableArray.java
index f1473dd..08acb78 100644
--- a/core/src/ch/asynk/rustanddust/engine/util/IterableArray.java
+++ b/core/src/ch/asynk/rustanddust/engine/util/IterableArray.java
@@ -91,6 +91,16 @@ public class IterableArray<E> implements Collection<E>
     }
 
     @Override
+    public boolean insert(E e, int idx)
+    {
+        ensureCapacity(s + 1);
+        System.arraycopy(data, idx, data, idx+1, (s - idx));
+        data[idx] = e;
+        s += 1;
+        return true;
+    }
+
+    @Override
     public E remove(int i)
     {
         E e = data[i];