C#:XNA4:SpriteSortMode在X轴上随机排序

我正在开发一款基于tile/sprite的游戏，通过调用我的Drawings

public void Draw(SpriteBatch spriteBatch)
    {
        DrawBehind(spriteBatch);
        DrawEven(spriteBatch);
        DrawInFront(spriteBatch);
    }
    private void DrawBehind(SpriteBatch spriteBatch)
    {
        spriteBatch.Begin();
        ActiveMap.DrawAtDepth(spriteBatch, Player, 1);
        spriteBatch.End();
    }
    private void DrawEven(SpriteBatch spriteBatch)
    {
        spriteBatch.Begin(SpriteSortMode.BackToFront, null);
        ActiveMap.DrawAtDepth(spriteBatch, Player, -1);
        Player.Draw(spriteBatch);
        spriteBatch.End();
    }
    private void DrawInFront(SpriteBatch spriteBatch)
    {
        spriteBatch.Begin();
        ActiveMap.DrawAtDepth(spriteBatch, Player, 0);
        spriteBatch.End();
    }

正如预期的那样，DrawBehind和DrawInFront只是根据他们所称的顺序进行绘制，在X和Y上都很稳定。

DrawEven在Y轴上正确排序，但在X轴上，精灵似乎只是无缘无故地前后翻转。

如果它是稳定的，我真的不在乎它按哪个顺序排序。相反，每次我"移动我的角色"（移动除了我角色的精灵之外的所有精灵的位置）时，它都会闪烁并切换。有人知道是什么原因或如何解决吗？

根据要求

编辑：

地图：

public void DrawAtDepth(SpriteBatch spriteBatch, Player player, int depth)
    {
        Area.DrawAtDepth(spriteBatch, player, depth);
    }

区域：

public void DrawAtDepth(SpriteBatch spriteBatch, Player player, int depth)
    {
        const int border = 10;
        var screenTiles = new Rectangle(
            0 - border,
            10 - border,
            (GameMain.ScreenRectangle.Width / Tile.Width - 1) + border,
            (GameMain.ScreenRectangle.Height / Tile.Height - 1) + 10 + border);
        var playerLevelPosition = player.LevelPosition;
        for (int layer = 0; layer < _layerCount; layer++)
            if (ActiveLevels[1, 1].GetLayerDepth(layer) == depth)
                for (int y = screenTiles.Y; y < screenTiles.Height; y++)
                    for (int x = screenTiles.X; x < screenTiles.Width; x++)
                        Draw(spriteBatch, player, playerLevelPosition, layer, x, y);
    }
private void Draw(SpriteBatch spriteBatch, Player player, Vector2 playerLevelPosition, int layer, int x, int y)
    {
        int levelX;
        var tileX = TilePos((int)playerLevelPosition.X, Level.Width, x, out levelX);
        int levelY;
        var tileY = TilePos((int)playerLevelPosition.Y, Level.Height, y, out levelY);
        var level = ActiveLevels[levelX, levelY];
        if (level != null)
            level.Draw(spriteBatch, player, layer, new Vector2(tileX, tileY));
    }
    private float TilePos(int playerPos, int mapBounds, int offset, out int levelPos)
    {
        var tilePos = ((playerPos) - (mapBounds/2f - 1)) + offset;
        levelPos = 1;
        if (tilePos < 0)
        {
            levelPos = 0;
            return tilePos + mapBounds;
        }
        if (tilePos >= mapBounds)
        {
            levelPos = 2;
            return tilePos - mapBounds;
        }
        return tilePos;
    }
    public static float GetDepth(float tilePos)
    {
        return 1 - tilePos / (Level.Height * 3);
    }

层：

public void Draw(SpriteBatch spriteBatch, Vector2 tile, Vector2 drawPosition, Color color, bool transparent = false)
    {
        if (_grid[(int)tile.X, (int)tile.Y] == null) return;
        _grid[(int)tile.X, (int)tile.Y].Draw(spriteBatch, drawPosition, color, transparent, (Depth != -1) ? Depth : Area.GetDepth(Level.Height + tile.Y));
    }

瓷砖：

public override void Draw(SpriteBatch spriteBatch, Vector2 drawPosition, Color color, bool transparent = false, float depth = 0)
    {
        if (!GameMain.ScreenRectangle.Intersects(_sprite.Bounds)) return;
        if (transparent && _fade)
            color = new Color(255, 255, 255, 100);
        spriteBatch.Draw(
            _sprite,
            drawPosition,
            null,
            color,
            0,
            new Vector2(_sprite.Width / 2 - Width / 2, _sprite.Height),
            1,
            SpriteEffects.None,
            depth
            );
    }

此外，欢迎为它提供任何一般提示。我是一个相当新的程序员，样式技巧很受欢迎。