diff --git a/src/main/java/com/pixelgamelibrary/api/scene2d/.gitkeep b/src/main/java/com/pixelgamelibrary/api/scene2d/.gitkeep
new file mode 100644
index 0000000..8b13789
--- /dev/null
+++ b/src/main/java/com/pixelgamelibrary/api/scene2d/.gitkeep
@@ -0,0 +1 @@
+
diff --git a/src/main/java/com/pixelgamelibrary/api/utils/CollectionUtils.java b/src/main/java/com/pixelgamelibrary/api/utils/CollectionUtils.java
index 4536cf3..754b8cd 100644
--- a/src/main/java/com/pixelgamelibrary/api/utils/CollectionUtils.java
+++ b/src/main/java/com/pixelgamelibrary/api/utils/CollectionUtils.java
@@ -20,10 +20,17 @@
package com.pixelgamelibrary.api.utils;
+import com.pixelgamelibrary.api.utils.collections.List;
+import com.pixelgamelibrary.api.utils.collections.Map;
+import com.pixelgamelibrary.api.utils.collections.Set;
+
/**
*
* @author robertvokac
*/
public interface CollectionUtils {
-
+ <K, V> Map<K, V> objectMap();
+ <T> Set<T> objectSet();
+ <T> List<T> list();
+
}
diff --git a/src/main/java/com/pixelgamelibrary/api/utils/collections/EntryImpl.java b/src/main/java/com/pixelgamelibrary/api/utils/collections/EntryImpl.java
new file mode 100644
index 0000000..b7695bc
--- /dev/null
+++ b/src/main/java/com/pixelgamelibrary/api/utils/collections/EntryImpl.java
@@ -0,0 +1,55 @@
+///////////////////////////////////////////////////////////////////////////////////////////////
+// Pixel: LibGDX Backend.
+// Copyright (C) 2024 the original author or authors.
+//
+// This program is free software: you can redistribute it and/or
+// modify it under the terms of the GNU General Public License
+// as published by the Free Software Foundation, either version 3
+// of the License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program. If not, see
+// <https://www.gnu.org/licenses/> or write to the Free Software
+// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+///////////////////////////////////////////////////////////////////////////////////////////////
+package com.pixelgamelibrary.api.utils.collections;
+
+import java.util.Map.Entry;
+
+/**
+ *
+ * @author robertvokac
+ */
+public class EntryImpl<K, V> implements Entry<K, V> {
+
+ private K key;
+ private V value;
+
+ public EntryImpl(K keyIn, V valueIn) {
+ this.key = keyIn;
+ this.value = valueIn;
+ }
+
+ @Override
+ public K getKey() {
+ return key;
+ }
+
+ @Override
+ public V getValue() {
+ return value;
+ }
+
+ @Override
+ public V setValue(V valueIn) {
+ this.value = valueIn;
+ return this.value;
+ }
+
+
+}
diff --git a/src/main/java/com/pixelgamelibrary/api/utils/collections/List.java b/src/main/java/com/pixelgamelibrary/api/utils/collections/List.java
new file mode 100644
index 0000000..b9baf08
--- /dev/null
+++ b/src/main/java/com/pixelgamelibrary/api/utils/collections/List.java
@@ -0,0 +1,29 @@
+///////////////////////////////////////////////////////////////////////////////////////////////
+// Pixel: Game library.
+// Copyright (C) 2024 the original author or authors.
+//
+// This program is free software: you can redistribute it and/or
+// modify it under the terms of the GNU General Public License
+// as published by the Free Software Foundation, either version 3
+// of the License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program. If not, see
+// <https://www.gnu.org/licenses/> or write to the Free Software
+// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+///////////////////////////////////////////////////////////////////////////////////////////////
+package com.pixelgamelibrary.api.utils.collections;
+
+/**
+ *
+ * @author robertvokac
+ * @param <T> item
+ */
+public interface List<T> extends java.util.List<T> {
+
+}
diff --git a/src/main/java/com/pixelgamelibrary/api/utils/collections/Map.java b/src/main/java/com/pixelgamelibrary/api/utils/collections/Map.java
new file mode 100644
index 0000000..ad5b39e
--- /dev/null
+++ b/src/main/java/com/pixelgamelibrary/api/utils/collections/Map.java
@@ -0,0 +1,30 @@
+///////////////////////////////////////////////////////////////////////////////////////////////
+// Pixel: Game library.
+// Copyright (C) 2024 the original author or authors.
+//
+// This program is free software: you can redistribute it and/or
+// modify it under the terms of the GNU General Public License
+// as published by the Free Software Foundation, either version 3
+// of the License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program. If not, see
+// <https://www.gnu.org/licenses/> or write to the Free Software
+// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+///////////////////////////////////////////////////////////////////////////////////////////////
+package com.pixelgamelibrary.api.utils.collections;
+
+/**
+ *
+ * @author robertvokac
+ * @param <K> key
+ * @param <V> value
+ */
+public interface Map<K,V> extends java.util.Map<K,V> {
+
+}
diff --git a/src/main/java/com/pixelgamelibrary/api/utils/collections/PixelCollection.java b/src/main/java/com/pixelgamelibrary/api/utils/collections/PixelCollection.java
new file mode 100644
index 0000000..fe708a2
--- /dev/null
+++ b/src/main/java/com/pixelgamelibrary/api/utils/collections/PixelCollection.java
@@ -0,0 +1,95 @@
+///////////////////////////////////////////////////////////////////////////////////////////////
+// Pixel: LibGDX Backend.
+// Copyright (C) 2024 the original author or authors.
+//
+// This program is free software: you can redistribute it and/or
+// modify it under the terms of the GNU General Public License
+// as published by the Free Software Foundation, either version 3
+// of the License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program. If not, see
+// <https://www.gnu.org/licenses/> or write to the Free Software
+// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+///////////////////////////////////////////////////////////////////////////////////////////////
+package com.pixelgamelibrary.api.utils.collections;
+
+import java.util.Collection;
+import java.util.Iterator;
+
+/**
+ *
+ * @author robertvokac
+ * @param <T> item
+ */
+public abstract class PixelCollection<T> implements Collection<T> {
+
+ @Override
+ public final Object[] toArray() {
+ Iterator<T> iterator = iterator();
+ Object[] array = new Object[size()];
+ int i = 0;
+ while (iterator.hasNext()) {
+ array[i] = iterator.next();
+ i++;
+ }
+ return array;
+ }
+
+ @Override
+ public final <T> T[] toArray(T[] a) {
+ Iterator<T> iterator = (Iterator<T>) iterator();
+ Object[] array = a;
+ int i = 0;
+ while (iterator.hasNext()) {
+ array[i] = iterator.next();
+ i++;
+ }
+ return (T[]) array;
+ }
+
+ @Override
+ public final boolean containsAll(Collection<?> c) {
+ Iterator<T> iterator = iterator();
+ while (iterator.hasNext()) {
+ boolean contains = contains(iterator.next());
+ if (!contains) {
+ return false;
+ }
+ }
+ return true;
+ }
+
+ @Override
+ public final boolean removeAll(Collection<?> c) {
+ boolean allKeysRemoved = true;
+ Iterator<T> iterator = iterator();
+ while (iterator.hasNext()) {
+ boolean removed = remove(iterator.next());
+ if (!removed && allKeysRemoved) {
+ allKeysRemoved = false;
+ }
+ }
+ return allKeysRemoved;
+ }
+
+ @Override
+ public boolean addAll(Collection<? extends T> c) {
+ Iterator<T> iterator = iterator();
+ while (iterator.hasNext()) {
+ add(iterator.next());
+ }
+ return true;
+ }
+
+ @Override
+ public boolean retainAll(Collection<?> c) {
+ throw new UnsupportedOperationException("Not supported yet."); // Generated from nbfs://nbhost/SystemFileSystem/Templates/Classes/Code/GeneratedMethodBody
+ }
+
+}
diff --git a/src/main/java/com/pixelgamelibrary/api/utils/collections/Set.java b/src/main/java/com/pixelgamelibrary/api/utils/collections/Set.java
new file mode 100644
index 0000000..0037d72
--- /dev/null
+++ b/src/main/java/com/pixelgamelibrary/api/utils/collections/Set.java
@@ -0,0 +1,29 @@
+///////////////////////////////////////////////////////////////////////////////////////////////
+// Pixel: Game library.
+// Copyright (C) 2024 the original author or authors.
+//
+// This program is free software: you can redistribute it and/or
+// modify it under the terms of the GNU General Public License
+// as published by the Free Software Foundation, either version 3
+// of the License, or (at your option) any later version.
+//
+// This program is distributed in the hope that it will be useful,
+// but WITHOUT ANY WARRANTY; without even the implied warranty of
+// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+// GNU General Public License for more details.
+//
+// You should have received a copy of the GNU General Public License
+// along with this program. If not, see
+// <https://www.gnu.org/licenses/> or write to the Free Software
+// Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
+///////////////////////////////////////////////////////////////////////////////////////////////
+package com.pixelgamelibrary.api.utils.collections;
+
+/**
+ *
+ * @author robertvokac
+ * @param <T> item
+ */
+public interface Set<T> extends java.util.Set<T> {
+
+}