entity

type Component interface {
	Mask() uint64
}

type ComponentWithName interface {
	Component
	Name() string
}

type Entity struct {
	Components []Component `json:"components"`
	Id         string      `json:"id"`
	Masked     uint64      `json:"masked"`
}

type Repository interface {
	Add(entities ...*Entity)
	Entities() (entities []*Entity)
	FilterByMask(mask uint64) (entities []*Entity)
	FilterByNames(names ...string) (entities []*Entity)
	Get(id string) (entity *Entity)
	Remove(entity *Entity)
}