Unity筆記整理:C# Scripting基本觀念

(Source: Unity官網)

一、Object and Component

• active an object
• prefab is an object

• enable a component
• any script under an object is a component
• renderer is a component

• GameObject.Find不能找被隱藏的物件/setActive(false)

二、變數在不同區域(scope)的優先權

A: 在宣告區

B: 在Start( )

C: 在Inspector (在runtime之前/在遊戲開始之前)

優先權 B > C > A

三、Awake( )與Start( )

說明:

Awake()

{

    //比Start先被呼叫

    //即使在Script component是關閉的狀態下，仍會呼叫Awake

}

Start()

{

    //比Awake晚

    //必須在Script component已經被啟動(打勾)的狀態下

}

四、Update( ) vs FixedUpdate( )

Update( )

• call every frame
• but interval time between frames is vary
• used for regular updates:
• non-physics objects movement
• simple timers
• receive input

FixedUpdate( )

• call every physics step (called in regular timeline)
• called interval time are constant
• used for adjusting physics (RB) objects