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AudioPlayerMusterlösung/AudioPlayer.cs

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+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Threading.Tasks;
+
+namespace AudioPlayerMusterlösung
+{
+    internal class AudioPlayer
+    {
+        private AudioFile[] audiofiles;
+
+        public AudioPlayer(int max)
+        {
+            audiofiles = new AudioFile[max];
+        }
+        public void AddFile(AudioFile audiofile)
+        {
+            for (int i = 0; i < audiofiles.Length; i++)
+            {
+                if (audiofiles[i] is null)
+                {
+                    audiofiles[i] = audiofile;
+                    break;
+                }
+            }
+        }
+        public void RemoveFile(int id)
+        {
+            if (id >= 0 && id < audiofiles.Length)
+            {
+                audiofiles[id] = null;
+            }
+        }
+        public void Play(int id)
+        {
+            if (id >= 0 && id < audiofiles.Length && audiofiles[id] is null)
+            {
+                audiofiles[id].Play();
+            }
+        }
+        public void PlayAll()
+        {
+            foreach (AudioFile audio in audiofiles)
+            {
+                if (audio is not null)
+                {
+                    audio.Play();
+                }
+            }
+        }
+        public void PlayShuffle()
+        {
+            Random rnd = new Random();
+            AudioFile[] playFiles = new AudioFile[audiofiles.Length];
+            for (int i = 0; i < playFiles.Length; i++)
+            {
+                playFiles[i] = audiofiles[i];
+            }
+            while (playFiles.Length > 0)
+            {
+                int playFile = rnd.Next(playFiles.Length);
+                if (playFiles[playFile] is not null)
+                {
+                    playFiles[playFile].Play();
+                }
+                AudioFile[] newArray = new AudioFile[playFiles.Length - 1];
+                for (int i = 0; i < playFile; i++)
+                {
+                    newArray[i] = playFiles[i];
+                }
+                for (int i = playFile; i < newArray.Length; i++)
+                {
+                    newArray[i] = playFiles[i + 1];
+                }
+                playFiles = newArray;
+            }
+        }
+    }
+}