###### tags: `Unity` | August 17, 2019
# Phase 3

## 1. States and State Machines （狀態、狀態機）
1. State = Action or Process or Behaviour （物件狀態：可能為動作、行為、過程...）
2. State Machines assumes only 1 state at a time (狀態機一次僅可採用一個狀態)
4. Conditions (requirements) to transition form one state to the next.


###### eg:

                State A             Decision                        State B/C
                
[Start] ➡️ [Room with 2 exits] ➡️ [Which Way?] ➡️ [Blue Door] ➡️ [Real World]
                                                ➡️ [Yellow Door] ➡️ [Fantasy land] 

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## 2. Scriptable Objects （可編譯物件）
1. *ScriptableObject* is a class that lets us store data in stand alone assets. （可以儲存資料於獨立的.asset檔案中）
2. Keep mountains of data out of scripts. (將Data從程式碼中獨立出來)
3. Lightweight and Convenient. （大量資料時方便使用）
4. Can be used as a template for consistency.
5. Don't need to attach to a game object.

## 3. Array （陣列）
1. an Array stores into a variable, multiple elements of the same type

##### eg:

int[] oddNumbers = {1,3,5,7,9};

Debug.Log(oddnumbers[3])

console result ➡️ 5

string[]  daysOfWeek = { "Mon", "Tues", "Wednes", "Thurs", "Fri", "Satur", "Sun" };

Debug.Log(daysOfWeek[3] + "day");

console result ➡️ Thursday

## 4. For Loop （for迴圈）
1. Repeated event until condition is met.
2. useful when counting or iterating

###### eg:

for (int i = 0; i < somthing; i++)
    {
        //do these things.
    }

## 3. 名詞講解
### Sprite
1. Sprite is an 2D graphic object (obtained from a bitmap image) （2D點陣圖物件）
3. Can be **Move, Scale, Rotate... etc**. （可以**移動、縮放、旋轉...等**）

### Components （組件）


### Serialize Field （序列化）
1. Can be put in front of any variables.
2. Make variables avaliable in the inspector. （使變數能在Unity檢視器中使用）
###### eg

[SerializeField] Text textComponet;