qzdoom/wadsrc/static/zscript/shared/player_inventory.txt

extend class PlayerPawn
{
	
	//===========================================================================
	//
	// 
	//
	//===========================================================================

	ui void InvNext()
	{
		Inventory next;

		let old = InvSel;
		if (InvSel != NULL)
		{
			if ((next = InvSel.NextInv()) != NULL)
			{
				InvSel = next;
			}
			else
			{
				// Select the first item in the inventory
				InvSel = FirstInv();
			}
			if (InvSel) InvSel.DisplayNameTag();
		}
		player.inventorytics = 5*TICRATE;
		if (old != InvSel)
		{
			A_PlaySound("misc/invchange", CHAN_AUTO, 1.0, false, ATTN_NONE);
		}
	}

	//===========================================================================
	//
	// APlayerPawn :: InvPrev
	//
	//===========================================================================

	ui void InvPrev()
	{
		Inventory item, newitem;

		let old = InvSel;
		if (InvSel != NULL)
		{
			if ((item = InvSel.PrevInv()) != NULL)
			{
				InvSel = item;
			}
			else
			{
				// Select the last item in the inventory
				item = InvSel;
				while ((newitem = item.NextInv()) != NULL)
				{
					item = newitem;
				}
				InvSel = item;
			}
			if (InvSel) InvSel.DisplayNameTag();
		}
		player.inventorytics = 5*TICRATE;
		if (old != InvSel)
		{
			A_PlaySound("misc/invchange", CHAN_AUTO, 1.0, false, ATTN_NONE);
		}
	}
	
	//===========================================================================
	//
	// APlayerPawn :: AddInventory
	//
	//===========================================================================

	override void AddInventory (Inventory item)
	{
		// Adding inventory to a voodoo doll should add it to the real player instead.
		if (player != NULL && player.mo != self && player.mo != NULL)
		{
			player.mo.AddInventory (item);
			return;
		}
		Super.AddInventory (item);

		// If nothing is selected, select this item.
		if (InvSel == NULL && item.bInvBar)
		{
			InvSel = item;
		}
	}

	//===========================================================================
	//
	// APlayerPawn :: RemoveInventory
	//
	//===========================================================================

	override void RemoveInventory (Inventory item)
	{
		bool pickWeap = false;

		// Since voodoo dolls aren't supposed to have an inventory, there should be
		// no need to redirect them to the real player here as there is with AddInventory.

		// If the item removed is the selected one, select something else, either the next
		// item, if there is one, or the previous item.
		if (player != NULL)
		{
			if (InvSel == item)
			{
				InvSel = item.NextInv ();
				if (InvSel == NULL)
				{
					InvSel = item.PrevInv ();
				}
			}
			if (InvFirst == item)
			{
				InvFirst = item.NextInv ();
				if (InvFirst == NULL)
				{
					InvFirst = item.PrevInv ();
				}
			}
			if (item == player.PendingWeapon)
			{
				player.PendingWeapon = WP_NOCHANGE;
			}
			if (item == player.ReadyWeapon)
			{
				// If the current weapon is removed, clear the refire counter and pick a new one.
				pickWeap = true;
				player.ReadyWeapon = NULL;
				player.refire = 0;
			}
		}
		Super.RemoveInventory (item);
		if (pickWeap && player.mo == self && player.PendingWeapon == WP_NOCHANGE)
		{
			PickNewWeapon (NULL);
		}
	}

	//===========================================================================
	//
	// APlayerPawn :: UseInventory
	//
	//===========================================================================

	override bool UseInventory (Inventory item)
	{
		let itemtype = item.GetClass();

		if (player.cheats & CF_TOTALLYFROZEN)
		{ // You can't use items if you're totally frozen
			return false;
		}
		if ((level.FROZEN) && (player == NULL || player.timefreezer == 0))
		{
			// Time frozen
			return false;
		}

		if (!Super.UseInventory (item))
		{
			// Heretic and Hexen advance the inventory cursor if the use failed.
			// Should this behavior be retained?
			return false;
		}
		if (player == players[consoleplayer])
		{
			A_PlaySound(item.UseSound, CHAN_ITEM);
 			StatusBar.FlashItem (itemtype);	// Fixme: This shouldn't be called from here, because it is in the UI.
		}
		return true;
	}
}