move backend to subfolder

tanks-backend/TanksServer/Models/PositionHelpers.cs

@@ -0,0 +1,42 @@
+using TanksServer.GameLogic;
+
+namespace TanksServer.Models;
+
+internal static class PositionHelpers
+{
+    public static PixelPosition GetPixelRelative(this PixelPosition position, short subX, short subY)
+        => new(position.X + subX, position.Y + subY);
+
+    public static PixelPosition ToPixelPosition(this FloatPosition position)
+        => new((int)Math.Round(position.X), (int)Math.Round(position.Y));
+
+    public static PixelPosition ToPixelPosition(this TilePosition position) => new(
+        (ushort)(position.X * MapService.TileSize),
+        (ushort)(position.Y * MapService.TileSize)
+    );
+
+    public static TilePosition ToTilePosition(this PixelPosition position) => new(
+        (ushort)(position.X / MapService.TileSize),
+        (ushort)(position.Y / MapService.TileSize)
+    );
+
+    public static FloatPosition ToFloatPosition(this PixelPosition position) => new(position.X, position.Y);
+
+
+    public static double Distance(this FloatPosition p1, FloatPosition p2)
+        => Math.Sqrt(
+            Math.Pow(p1.X - p2.X, 2) +
+            Math.Pow(p1.Y - p2.Y, 2)
+        );
+
+    public static PixelBounds GetBoundsForCenter(this FloatPosition position, ushort size)
+    {
+        var sub = (short)(-size / 2d);
+        var add = (short)(size / 2d - 1);
+        var pixelPosition = position.ToPixelPosition();
+        return new PixelBounds(
+            pixelPosition.GetPixelRelative(sub, sub),
+            pixelPosition.GetPixelRelative(add, add)
+        );
+    }
+}