control

type Command struct {
}

type Controllable interface {
	WatchKeys() []ebiten.Key
	Control(deltaSec float64, inputMgr input.Manager)
}

type Subject interface {
	ControlType() string

	Control(cmds []interface{})
}

type System interface {
	Add(id string, x any)
	Remove(id string)
	Clear()

	Control(deltaSec float64)
}