prepare to send different data per client

TanksServer/Graphics/GamePixel.cs

@@ -0,0 +1,21 @@
+namespace TanksServer.Graphics;
+
+internal sealed class GamePixel
+{
+    public Player? BelongsTo { get; set; }
+
+    public GamePixelEntityType? EntityType { get; set; }
+
+    public void Clear()
+    {
+        BelongsTo = null;
+        EntityType = null;
+    }
+}
+
+internal enum GamePixelEntityType : byte
+{
+    Wall = 0x0,
+    Tank = 0x1,
+    Bullet = 0x2
+}