隨機指令
Random Block

此指令產生亂數值,可以利用這個隨機值來讓機器人做出不可預期的行為.例如,如果用隨機指令來連接移動指令的執行時間時,機器人可能這次前進四秒鐘,而下次卻是移動八秒.
This block generates a random number. You can use random numbers to create unpredictable behavior by your robot. For instance, if you use a data wire to connect a Random block to the Duration plug of a Move block's data hub, your robot might go forward for four seconds one time but then eight seconds the next time you run the program.

隨機值將會介於指定的範圍內.如果範圍是5至10,則包含5跟10都是可能出現的數字.若不想包含5跟10,則需指定範圍是6跟9.
The random number will be generated between (and including) minimum and maximum limits that you set. If you want to generate random numbers between 5 and 10, and including 5 and 10 as the possible numbers, set the minimum value to 5 and the maximum value to 10. If you don’t want 5 or 10 to be within the set of possible random numbers, choose a minimum value of 6 and a maximum value of 9.

在輸入區中使用滑桿或是輸入數值來指定最大最小值.若要動態的數字則可以用資料線來連接資料集線器.
Set the minimum and maximum limits either by using the slider or by typing values into the input box. To get a dynamic number, attach input data wires to the block’s data hub.

輸出值(也就是隨機值)只能由資料線從輸出埠(#)傳送.(參考下列資料集線器說明).
Output for the block (i.e., the random number) can only be sent through a data wire from the output value (#) plug. (See the Data Hub section below for more information.)

1. 當此指令放在序列軸上時,資料集線器會自動打開.
   This block’s data hub will open automatically when the block is attached to a sequence beam.

設定隨機指令
Configuring the Random Block

1. 使用滑桿或是輸入數值來指定最大最小值.滑桿的最大值上限為100,但用輸入的方式可以超過100,同樣地也可以在最小值輸入負值.藉以改變滑桿的最小值.若要動態地輸入最大最小值,則可以用資料線來連結.
   Set the minimum and maximum limits either by using the two sliders handles or by typing in numbers. The upper limit of the slider is marked as 100, but if an upper limit is typed into the value box, it can be above 100. You can also type a negative number into the minimum limit box; this will override the slider. To set the minimum and maximum limits dynamically, attach input data wires to the block’s data hub.

設定隨機指令的資料集線器
Configuring the Random block’s Data Hub

用資料線可以任意地用來控制隨機指令.(從其他指令的資料集線器到隨機指令的資料集線器).
You can control the Random block dynamically by connecting data wires (from other blocks’ data hubs) to the Random block’s data hub.

把指令放在工作區上後,可以按圖示的左下角來打開資料集線器.
Open a block’s data hub by clicking the tab at the lower left edge of the block after it has been placed on the work area.

連接到集線器左邊連接埠的資料線是屬於負責傳遞資料進入指令中,而要從指令送出資料時,則須從集線器的右邊連接埠連接資料線.
Data wires carrying input information to a block are connected to the plugs on the left side of its data hub. Data wires carrying output information are connected to the plugs on the right side.

[A]輸入連接埠 [A] Input plug
[B]輸出連結部 [B] Output plug
[C]數字資料線(黃) [C] Number data wire (yellow)
[D]邏輯資料線(綠) [D]Logic data wire (green)
[E]文字資料線(橘) [E]Text data wire (orange)
[F]無效資料線(灰) [F]Broken data wire (gray)

資料由輸入端傳至傳出端
Passing from the input plug to the output plug

如果輸入連接埠有對應的輸出連接埠(請參閱 A 以上)時,那麼輸入的資料就會原封不動地傳遞到輸出連接埠.在這樣的情況下, 如果輸入連接埠連著資料線,那麼就只能使用輸出連結埠來做連結. 也就是說,當連結輸出連接線到這樣的輸出連接埠,而不透過相對應的輸入資料線時,就會讓該輸出連接線呈現無效的狀態.
If an input plug has a corresponding output plug (see A above), the input data will pass through from the input plug to the output plug without being changed. In this case, you can only use the output plug if the input plug is connected to an input data wire; connecting an output data wire to such an output plug without a connected input data wire will cause the output data wire to be “broken” (and colored gray).

特定的資料型態
Data wire colors carry specific types of data

每條資料線都負責傳送特定資料.例如,一條從邏輯連接埠拉出的資料線則只能連結到另一個同屬邏輯連接埠的集線器上.
Each data wire carries a specific type of data between blocks. For example, if a data wire is dragged from a logic plug on a block’s data hub, it can only be connected to a logic plug on another block’s data hub. The chart below shows what kind of data each plug can accept or send out.

資料線顏色
Data wire colors

資料線依照特定的顏色作識別:黃色資料線傳送數值資料、綠色資料線傳送邏輯資料(真/偽)及橘色資料線傳送文字資料
Data wires are identified with specific colors: wires carrying number data are colored yellow, wires carrying logic data are colored green, and wires carrying text data are colored orange.

無效的資料線
“Broken” data wires

如果資料線連結到錯誤資料型態的連接埠時,則該資料線會呈現斷線無效狀態並以灰色表示.而有無效的資料線存在就無法下載程式.
If you try to connect a data wire to a plug of the wrong data type, the data wire will be broken (and colored gray). You will not be able to download your program if a data wire is broken.

點選無效的資料線時,在工作區右下方的幫助視窗中會看到無效的原因.
If you click a broken wire you can read why it is broken in the small help window in the lower right corner of the work area.

資料必須在連接埠的限制範圍內
Data must bewithin the possible range of the plug

如果資料線傳輸該連接埠資料範圍之外的資料時,該指令不是忽略資料就是轉成合理範圍內的資料.對那些只能接收少量輸入值的連接埠來說(例如,0,1,或2),該連結埠就會忽略超出範圍的數值.
If an input data wire transmits a value outside the possible range of the plug it is connected to, the block will either ignore the value or change it to a value within its range. For plugs that allow just a few input values (example: just 0, 1, or 2), the plug will ignore the input if a value arrives outside its range.

而對那些可以接收大量範圍輸入值(例如: 0~100)的連接埠來說,該連接埠就會將數值轉成可接受的範圍. 例如, 移動指令的動力連接埠接收到150的輸入值時,那麼移動指令就會轉成100(也就是動力連接埠的範圍內).
For plugs that accept larger input ranges (example: 0 – 100), the plug will force any input outside its range to fit. For example, if a Move block’s Power plug receives an input value of 150, the block will change the input value to 100 (i.e., a number within the Power plug’s range).

下表列出本資料集線器中各連接埠的特性
This chart shows the different characteristics of the plugs on the Random block’s data hub:

	連結埠 Plug	資料型態 Date Type	資料範圍 Possible Range	資料意義 What the Values Mean	連接埠例外說明 This Plug is Ignored When...
	A	數字 Number	0 - 32767	下限 Lower limit
	B	數字 Number	0 - 32767	上限 Upper limit
	數字 Number	數字 Number	下限 - 上限 Lower limit - Upper limit	介於上下限的數字(包含邊界值) A random value between lower and upper limits (including the limit values)