Can't remove Object from Objects by PickUp method of Creature

[VedVid]

func (c *Creature) PickUp(o Objects) bool {
	turnSpent := false
	for i, v := range o {
		if v.X == c.X && v.Y == c.Y && v.Pickable == true {
			item := o[i]
			c.Inventory = append(c.Inventory, item)
			fmt.Println(len(o))
			o[i] = o[len(o)-1] // Doesn't it leaks a memory? \/
			o = o[:len(o)-1]   // It's slice of pointers to struct.
			fmt.Println(len(o))
			turnSpent = true
			break
		}
	}
	return turnSpent
}

After picking item up, len(o) becomes smaller. But item remains on the ground. After another picking up, len(o) is the same as at start of previous call.

It's about pointers?

[VedVid]

I created new slice, with local variable, instead of mutating existing slice

[VedVid]

Fixed by cf1fe76 (and later it was necessary to 89e9059 )