Not really a issue. Feedback

[MisterAndyDandy]

I used this code for my backpack when I was looking for light values and it works fine.

instead of you patching. You can do this. <3

private void OnLevelFinalize()
  {
      try
      {
          BackPack = Capi?.World?.Player?.InventoryManager.GetOwnInventory(GlobalConstants.backpackInvClassName);
    
          BackPack?.SlotModified += BackPack_SlotModified;
      }
      catch
      {
          // just keep on
      }
  }

  public void BackPack_SlotModified(int slotid)
  {
      var itemstack = BackPack?[slotid]?.Itemstack;

      if (itemstack != null) 
      {
          if (itemstack.Collectible is ItemEGlider || itemstack.Collectible is ItemGlider)
          {
              //Do something here
          }
      }
  }

[Kotl-EV]

here you can check that the glider is on, but the problem lies in the game's code. It uses its own validation method, and if it returns false, the player stops gliding. This validation occurs every game tick.

this is the code to check if the glider is on
private void Input_InWorldAction(EnumEntityAction action, bool on, ref EnumHandling handled)
{
EntityPlayer entity = this.capi.World.Player.Entity;
if (action == EnumEntityAction.Jump & on && !entity.OnGround && this.HasGlider && !entity.Controls.IsFlying)
{
entity.Controls.Gliding = true;
entity.Controls.IsFlying = true;
entity.MarkShapeModified();
}
if (action != EnumEntityAction.Glide || on)
return;
entity.MarkShapeModified();
}

private bool HasGlider
{
get
{
foreach (ItemSlot itemSlot in (IEnumerable) this.capi.World.Player.InventoryManager.GetOwnInventory("backpack"))
{
if (itemSlot is ItemSlotBackpack && itemSlot.Itemstack?.Collectible is ItemGlider)
return true;
}
return false;
}
}

here's the code where this check is used, and it disables planning every tick if the glider is not equipped in the game, and even if I enable planning somewhere else, it will be disabled here.

private void onClientTick(float dt)
{
this.ToggleglideSounds(this.capi.World.Player.Entity.Controls.Gliding);
foreach (IPlayer allOnlinePlayer in this.capi.World.AllOnlinePlayers)
{
if (allOnlinePlayer.Entity != null)
{
float num1 = 15f;
float num2 = allOnlinePlayer.Entity.Attributes.GetFloat("glidingAccum", 0.0f);
int num3 = allOnlinePlayer.Entity.Attributes.GetInt("unfoldStep", 0);
float num4;
if (allOnlinePlayer.Entity.Controls.Gliding)
{
num4 = Math.Min(3.01f / num1, num2 + dt);
if (!this.HasGlider)
{
allOnlinePlayer.Entity.Controls.Gliding = false;
allOnlinePlayer.Entity.WalkPitch = 0.0f;
}
}
else
num4 = Math.Max(0.0f, num2 - dt);
int num5 = (int) ((double) num4 * (double) num1);
if (num3 != num5)
{
int num6 = num5;
allOnlinePlayer.Entity.MarkShapeModified();
allOnlinePlayer.Entity.Attributes.SetInt("unfoldStep", num6);
}
allOnlinePlayer.Entity.Attributes.SetFloat("glidingAccum", num4);
}
}
}

if you're interested, you can explore this class odSystemGliding