Fixed several issues

src/main/java/com/pixelgamelibrary/api/audio/Sound.java

@@ -51,7 +51,7 @@ public interface Sound extends Disposable {
     /**
      * Plays the sound with specified volume, pitch, and pan.
      * @param volume the volume level in the range [0, 1]
-     * @param pitch the pitch multiplier, where 1 is the default, >1 is faster, <1 is slower
+     * @param pitch the pitch multiplier, where 1 is the default, &gt;1 is faster, &lt;1 is slower
      * @param pan panning in the range -1 (left) to 1 (right), 0 is center
      * @return the ID of the sound instance if successful, or -1 on failure.
      */
@@ -73,7 +73,7 @@ public interface Sound extends Disposable {
     /**
      * Plays the sound in a loop with specified volume, pitch, and pan.
      * @param volume the volume level in the range [0, 1]
-     * @param pitch the pitch multiplier, where 1 is the default, >1 is faster, <1 is slower
+     * @param pitch the pitch multiplier, where 1 is the default, &gt;1 is faster, &lt;1 is slower
      * @param pan panning in the range -1 (left) to 1 (right), 0 is center
      * @return the ID of the sound instance if successful, or -1 on failure.
      */
@@ -128,7 +128,7 @@ public interface Sound extends Disposable {
     /**
      * Sets the pitch for the sound instance with the specified ID.
      * @param soundId the ID of the sound instance
-     * @param pitch the pitch multiplier, where 1 is the default, >1 is faster, <1 is slower
+     * @param pitch the pitch multiplier, where 1 is the default, &gt;1 is faster, &lt;1 is slower
      */
     public void setPitch(long soundId, float pitch);
 

src/main/java/com/pixelgamelibrary/api/graphics/Color.java

@@ -26,6 +26,7 @@ import static com.pixelgamelibrary.api.graphics.ColorDepth.BITS_24;
 import static com.pixelgamelibrary.api.graphics.ColorDepth.BITS_32;
 import static com.pixelgamelibrary.api.graphics.ColorDepth.BITS_4;
 import static com.pixelgamelibrary.api.graphics.ColorDepth.BITS_8;
+import com.pixelgamelibrary.api.utils.StringUtilsImpl;
 import java.util.BitSet;
 import lombok.Data;
 
@@ -362,7 +363,7 @@ public final class Color {
      * @return the hexadecimal string representation of this color
      */
     public String toHexString() {
-        return String.format("#%08X", toIntRGBA());
+        return "#" + StringUtilsImpl.INSTANCE.padLeft(Integer.toHexString(toIntRGBA()), '0', 8).toUpperCase();
     }
 
     public static Color valueOf(String hexString) {
@@ -620,7 +621,8 @@ public final class Color {
     @Override
     public String toString() {
         // Provide a string representation of the color in RGBA format
-        return String.format("Color{red=%f, green=%f, blue=%f, alpha=%f}", red, green, blue, alpha);
+        return "Color{red=" + red + ", green=" + green + ", blue=" + blue + ", alpha=" + alpha + "}";
+
     }
 
 }

src/main/java/com/pixelgamelibrary/api/interfaces/Utils.java

@@ -22,6 +22,8 @@ package com.pixelgamelibrary.api.interfaces;
 import com.pixelgamelibrary.api.utils.BinaryUtilsImpl;
 import com.pixelgamelibrary.api.utils.CollectionUtils;
 import com.pixelgamelibrary.api.utils.ReflectionUtils;
+import com.pixelgamelibrary.api.utils.StringUtils;
+import com.pixelgamelibrary.api.utils.StringUtilsImpl;
 import java.util.Arrays;
 import java.util.HashMap;
 import java.util.List;
@@ -61,5 +63,8 @@ public interface Utils {
     default BinaryUtilsImpl binary() {
         return BinaryUtilsImpl.INSTANCE;
     }
+    default StringUtils string() {
+        return StringUtilsImpl.INSTANCE;
+    }
 
 }

src/main/java/com/pixelgamelibrary/api/utils/StringUtils.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;
+
+/**
+ *
+ * @author robertvokac
+ */
+public interface StringUtils {
+    String padLeft(String s, char padChar, int length);
+}

src/main/java/com/pixelgamelibrary/api/utils/StringUtilsImpl.java

@@ -0,0 +1,44 @@
+///////////////////////////////////////////////////////////////////////////////////////////////
+// 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;
+
+/**
+ *
+ * @author robertvokac
+ */
+public class StringUtilsImpl implements StringUtils {
+
+    public static final StringUtilsImpl INSTANCE = new StringUtilsImpl();
+
+    private StringUtilsImpl() {
+
+    }
+
+    @Override
+    public String padLeft(String s, char padChar, int length) {
+        StringBuilder sb = new StringBuilder(length);
+        while (sb.length() < length) {
+            sb.append(padChar);
+        }
+        sb.append(s);
+        return sb.toString().substring(sb.length() - length); // Return last 'length' characters
+    }
+
+}

src/test/java/com/pixelgamelibrary/api/graphics/ColorTest.java

@@ -173,7 +173,7 @@ public class ColorTest {
     @Test
     public void testToString() {
         Color color = new Color(0.5f, 0.5f, 0.5f, 0.75f);
-        assertEquals("Color{red=0.500000, green=0.500000, blue=0.500000, alpha=0.750000}", color.toString());
+        assertEquals("Color{red=0.5, green=0.5, blue=0.5, alpha=0.75}", color.toString());
     }
 
     @Test