if(keyboard_check_pressed(ord("E")))
{
show_inventory = !show_inventory;
}
#region Mouse Slot
mousex = device_mouse_x_to_gui(0);
mousey = device_mouse_y_to_gui(0);

var cell_xbuff = (cell_size+x_buffer)*scale;
var cell_ybuff = (cell_size+y_buffer)*scale;

var i_mousex = mousex - slots_x;
var i_mousey = mousey - slots_y;

var nx = i_mousex div cell_xbuff;
var ny = i_mousey div cell_ybuff;

if(nx >= 0 and nx < inv_slots_width and ny >= 0 and ny < inv_slots_height)
{
	var sx = i_mousex - (nx*cell_xbuff);
	var sy = i_mousey - (ny*cell_xbuff);

	if((sx < cell_size*scale) and (sy < cell_size*scale))
	{
m_slotx = nx;
m_sloty = ny;
	}
}

//Set Selected Slot to Mouse Position
selected_slot =  min(inv_slots-1, m_slotx + (m_sloty*inv_slots_width));
#endregion

//Pickup Item

var inv_grid = ds_inventory;
var ss_item = inv_grid[# 0, selected_slot];

if(pickup_slot != -1)
{
   if keyboard_check_pressed(ord ("Z"))
   {
	   if(ss_item == item.none)
	   {
		   inv_grid[# 0, selected_slot] = inv_grid[# 0, pickup_slot];
		   inv_grid[# 1, selected_slot] = inv_grid[# 1, pickup_slot];

		   inv_grid[# 0, selected_slot] = item.none;
		   inv_grid[# 1, pickup_slot] = 0;

		   pickup_slot = -1;
	   }
	    else if (ss_item == inv_grid[# 0, pickup_slot])
		{
			if(selected_slot != pickup_slot)
			{
				inv_grid[# 1, selected_slot] += inv_grid[# 1, pickup_slot];
				inv_grid[# 0, pickup_slot] = item.none;
				inv_grid[# 1, pickup_slot] = 0;
			}

			pickup_slot = -1;
		}
        else
		{
			var ss_item_num = inv_grid[# 1, selected_slot];
		   inv_grid[# 0, selected_slot] = inv_grid[# 0, pickup_slot];
		   inv_grid[# 1, selected_slot] = inv_grid[# 1, pickup_slot];

		   inv_grid[# 0, selected_slot] = ss_item;
		   inv_grid[# 1, pickup_slot] = ss_item_num;

		   //pickup_slot = -1;
		}
   }
}
else if(ss_item != item.none)
{
	if keyboard_check_pressed(ord ("X"))
	{
	  pickup_slot = selected_slot;
    }
}