### 一般写法，工厂方法

```golang
package main

type GameStart struct {
cloudNumber int
gameStartLayers [8]*ebiten.Image
layerPosition [8][2]float64
menuList [3]*Menu
}

func NewGameStart() *GameStart {
return &GameStart{
cloudNumber: 3,
layerPosition: [8][2]float64{
{0, 0}, {0, 0}, {0, 230}, {0, 250},
{0, 250}, {0, 0}, {0, 0}, {0, 0},
},
}
}

func main() {
var gameStart = NewGameStart()
}
```


### 如果需要 pool 优化，还可以：
```golang
package main

import (
"sync"
)

var initedGameStart = GameStart{
cloudNumber: 3,
layerPosition: [8][2]float64{
{0, 0}, {0, 0}, {0, 230}, {0, 250},
{0, 250}, {0, 0}, {0, 0}, {0, 0},
},
}

var gameStartPool = sync.Pool{
New: func() interface{} {
return &GameStart{}
},
}

type GameStart struct {
cloudNumber int
gameStartLayers [8]*ebiten.Image
layerPosition [8][2]float64
menuList [3]*Menu
}

func (v *GameStart) Release() {
// maybe you want to release gameStartLayers and menuList here
// ...

gameStartPool.Put(v)
}

func NewGameStart() *GameStart {
v := gameStartPool.Get().(*GameStart)
*v = initedGameStart
return v
}

func main() {
var gameStart = NewGameStart()
defer gameStart.Release()
}
```