package soko

type Entity struct {
	ID  int
	Pos int
	Typ EntityType
}

type Entities []Entity

func (e Entities) ByID(id int) Entity {
	idx := e.IdxById(id)
	if idx == -1 {
		return Entity{ID: -1}
	}
	return e[idx]
}

func (e Entities) Clone() Entities {
	clone := make(Entities, len(e))
	copy(clone, e)
	return clone
}

func (e Entities) IdxById(id int) int {
	for i, e := range e {
		if e.ID == id {
			return i
		}
	}
	return -1
}

type Ints []int

func NewInts(n int) Ints {
	ids := make(Ints, n)
	for i := range ids {
		ids[i] = -1
	}
	return ids
}

func (e Ints) Clone() Ints {
	clone := make(Ints, len(e))
	copy(clone, e)
	return clone
}