Added part of collections

src/main/java/com/pixelgamelibrary/api/scene2d/.gitkeep

@@ -0,0 +1 @@
+

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();
+
 }

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;
+    }
+
+
+}

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> {
+    
+}

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> {
+    
+}

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
+    }
+
+}

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> {
+    
+}