From Test-Scratch-Wiki

This article or section documents an outdated version of Scratch (version 2.0). For this article in Scratch 1.4, see Zho:積木 (1.4).
This zho is about the programming blocks. For account blocks, see Ban.


積木是用來寫Scratch程式的拼圖塊形狀。每塊積木可以像拼圖一樣跟另一塊積木連結,而每一個形狀(比如橢圓形、條形、半圓形,等等)只可以放在特定的地方。一串積木可以被稱為「程式」。

There are twelve categories of blocks: Motion, Looks, Sound, Pen, Variables, List, Event, Control, Sensing, Operators, PicoBoard, and LEGO WeDo (although there are some other categories and blocks in some Scratch modifications). Only ten are shown in the Block Palette.

In total, there are eleven hat blocks, five C blocks, thirty-seven reporter blocks, thirteen Boolean blocks, two cap blocks and seventy-seven stack blocks.

積木形狀

There are six different block shapes: Hat, Stack, Boolean, Reporter, C and Cap.

半圓形

The shape of a Hat block.
Main article: Hat Block

Hat blocks are the blocks that start every script. They are shaped with a rounded top and a bump at the bottom — this is so you can only place blocks below them. There are 11 Hat blocks, six of which are in the Events category, one in the Control category, and four More hat blocks. Some examples of hat blocks are: 當 @greenflag 被點擊, or 當角色被點擊

條形

The shape of a Stack block.
Main article: Stack Block

Stack blocks are the blocks that perform the main commands. They are shaped with a notch at the top and a bump on the bottom — this is so blocks can be placed above and below them. There are 77 Stack blocks — the most common block shape.

菱形

The shape of a Boolean block.
Main article: Boolean Block

Boolean blocks are the conditions — they are either true or false. It is like asking your friend: "Does 2 + 2 = 4?", and they would either tell you "Yes" or "No". With a hexagonal shape, there are 13 of these blocks.

橢圓形

The shape of a Reporter block.
Main article: Reporter Block

Reporter blocks are the values. Reporter blocks can hold numbers and strings. It is like asking a friend, for example, "What is 2 + 2?", and they would answer "4". It is not just equations however, it can report a variable, for example, "What is your age?". They may answer: "15". Shaped with rounded edges, there are 37 of these blocks — not counting the theoretically infinite amount of Reporter blocks that can be made for each variable and list.

半框形

The shape of one of the C blocks.
Main article: C Block

C blocks are blocks that take the shape of "C's". Also known as "Wrap blocks", these blocks loop the blocks within the Cs or check if a condition is true. There are five C blocks, and they can be found in the Control category. C blocks can be bumped at the bottom, or capped.

平底形

The shape of a Cap block.
Main article: Cap Block

Cap blocks are the blocks that end scripts. They are shaped with a notch at the top and a flat bottom — this is so you cannot place any blocks below them. There are two Cap blocks which can both be found in the Control category.

積木列

There are 145 blocks in Scratch 2.0.

動作積木

Main article: Motion Blocks


Motion blocks are the blocks that control a sprite's movement. There are 17 Motion blocks in Scratch 2.0.

Scratch 2.0 has the following fourteen Motion Stack blocks:

Scratch 2.0 has the following three Motion Reporter blocks:

外觀積木

Main article: Looks Blocks


Looks blocks are the blocks that control a sprite's look. There are 23 Looks blocks in Scratch 2.0. Three of the 19 sprite Looks blocks have a counterpart for the Stage.

Scratch 2.0 has the following sixteen Looks Stack blocks:

Scratch 2.0 has the following three Looks Reporter blocks:

音效積木

Main article: Sound Blocks


Sound blocks are the blocks that control sound and MIDI functions. There are 13 Sound blocks in Scratch 2.0.

Scratch 2.0 has the following eleven Sound Stack blocks:

Scratch 2.0 has the following two Sound Reporter blocks:

畫筆積木

Main article: Pen Blocks


Pen blocks are the blocks that control the pen. There are 11 Pen blocks in Scratch 2.0.

Scratch 2.0 has the following eleven Pen Stack blocks:

The Scratch Day pre-alpha of Scratch 2.0 had the following one new Pen Stack block:

  • Stamp Transparent () — Pens the sprite's image on the screen at the transparency of the amount in the block. Can be removed using clear. This was made obsolete, because now ghost effect is respected when stamping.

數據積木

變量積木

Main article: Variables Blocks


Variables blocks are the blocks that hold values and strings. There are 5 Variables blocks in Scratch 2.0.

Scratch 2.0 has the following four Variables Stack blocks:

Scratch 2.0 has the following Variables Reporter block:

  • () — The variable's value.

清單積木

Main article: List Blocks


List blocks are the blocks that manage lists. They are stored in the Data category. There are 10 List blocks in Scratch 2.0.

Scratch 2.0 has the following six List Stack blocks:

Scratch 2.0 has the following 3 List Reporter blocks:

Scratch 2.0 has the following List Boolean block:

  • () Contains () — The condition for checking if an item's content is the specified text.

事件積木

Main article: Events Blocks


Event blocks are blocks that control events and the triggering of scripts. There are 8 Event blocks in Scratch 2.0.

Scratch 2.0 has the following six Event Hat Blocks:

Scratch 2.0 has the following two Event Stack blocks:

  • Broadcast () — Sends a broadcast throughout the Scratch program, activating When I Receive () blocks that are set to that broadcast.
  • Broadcast () and Wait — Like the Broadcast () block, but pauses the script until all scripts activated by the broadcast are completed.

控制積木

Main article: Control Blocks


Control blocks are the blocks that control scripts. There are 11 Control blocks in Scratch 2.0.

Scratch 2.0 has the following one Control Hat block:

  • When I Start as a Clone (sprites only) — This hat block is triggered whenever a clone is created, and will only be run by that clone.

Scratch 2.0 has the following three Control Stack blocks:

Scratch 2.0 has the following five Control C blocks:

  • Repeat () — A loop that repeats the specified amount of times.
  • Forever — A loop that will never end.
  • If () Then — Checks the condition so that if the condition is true, the blocks inside it will activate.
  • If () Then, Else — Checks the condition so that if the condition is true, the blocks inside the first C will activate and if the condition is false, the blocks inside the second C will activate.
  • Repeat Until () — A loop that will stop once the condition is true.

Scratch 2.0 has the following two Control Cap blocks:

  • Stop () — Stops the scripts chosen through the drop-down menu. Can also be a stack block when "other scripts in this sprite" is chosen.
  • Delete This Clone (sprites only) — Deletes a clone.

偵測積木

Main article: Sensing Blocks

Sensing blocks are the blocks that detect things. There are 20 Sensing blocks in Scratch 2.0.

Scratch 2.0 has the following four Sensing Stack blocks:

Scratch 2.0 has the following five Sensing Boolean blocks:

  • Touching ()? — The condition for checking if the sprite is touching the mouse-pointer or another sprite.
  • Touching Color ()? — The condition for checking if the sprite is touching a specific color.
  • Color () is Touching ()? — The condition for checking if a color on the sprite is touching a specific color.
  • Key () Pressed? — The condition for checking if the specified key is being pressed.
  • Mouse Down? — The condition for checking if the mouse is down.

Scratch 2.0 has the following eleven Sensing Reporter blocks:

  • Distance to () — The distance from the sprite to the mouse-pointer or another sprite.
  • Answer — The most recent input with the Ask () And Wait block.
  • Mouse X — The mouse-pointer's X position.
  • Mouse Y — The mouse-pointer's Y position.
  • Loudness — How loud the noise is that the microphone is sensing.
  • Timer — How much time has passed since the Scratch program was opened or the timer reset.
  • Video () on () — The video motion or direction of video motion on an object.
  • () of () — The X position, Y position, direction, costume, size or volume of the Stage or a sprite.
  • Current () — The specified time unit selected.
  • Days Since 2000 — The number of days since 2000.
  • Username — The username of a user.

運算積木

Main article: Operators Blocks


Operators blocks are the blocks that perform math functions and string handling. There are 17 Operators blocks in Scratch 2.0.

Scratch 2.0 has the following six Operators Boolean blocks:

  • () < () — The condition for checking if a value is less than the other.
  • () = () — The condition for checking if two values are equal.
  • () > () — The condition for checking if a value is greater than the other.
  • () and () — Joins two conditions.
  • () or () — Joins two conditions, but they function separately.
  • Not () — Makes the condition checked if it is false, not true.

Scratch 2.0 has the following eleven Operators Reporter blocks:

  • () + () — The value of the addition.
  • () - () — The value of the subtraction.
  • () * () — The value of the multiplication.
  • () / () — The value of the division.
  • Pick Random () to () — Picks a random number between the two limits.
  • Join ()() — The two values put right next to each other.
  • Letter () of () — The specified character of the value.
  • Length of () — The length of the value.
  • () Mod () — The remainder of the division.
  • Round () — Rounds the value to the nearest whole number.
  • () of () — The absolute value (abs), square root (sqrt), sine (sin), cosine (cos), tangent (tan), asine (asin), acosine (acos), atangent (atan), natural logarithm (ln), logarithm (log), exponential function (e^), or base 10 exponential function (10^) of a specified value.

Right clicking some of the blocks will yield more choices of its type.

更多積木

Main article: More Blocks

More blocks are user-made custom blocks. There are 2 unique kinds of More blocks in Scratch 2.0.

Scratch 2.0 has the following More Modified Hat block:

Scratch 2.0 has the following More Stack block:

  • () — A custom block.

PicoBoard 積木

Main article: PicoBoard Blocks


PicoBoard blocks are used to control and sense data from the PicoBoard.

Scratch 2.0 has the 2 following PicoBoard Hat blocks:

Scratch 2.0 has the following PicoBoard Boolean block:

Scratch 2.0 has the following PicoBoard Reporter block:

LEGO WeDo 積木

Main article: LEGO WeDo Blocks

LEGO WeDo blocks are used to control the LEGO WeDo. They are accessed via the Add an Extension button.

Scratch 2.0 has the following five LEGO WeDo Stack blocks:

Scratch 2.0 has the following two LEGO WeDo Hat blocks:

Scratch 2.0 has the following two LEGO WeDo Reporter blocks:

Scratch 積木插入

Main article: Block Plugin


The Scratch Block Plugin allows blocks and scripts to be used in the Scratch Forums and Scratch Wiki, as well as other sites with the included JavaScript. They look like this:

當 @greenflag 被點擊
定位到 x: (0) y: (0) //  center the sprite for the first stamp
蓋章
重複無限次 
  定位到 x: (隨機取數 (-240) 到 (240)) y: (0)
  蓋章
  等待 (0.2) 秒
  效果 [顏色 v] 改變 (隨機取數 (5) 到 (14))
end

The current version that includes all blocks from Scratch 2.0 was made by blob8108.

編輯積木顏色

Editing the block colors.
Main article: Edit Block Colors

In the online Scratch 2.0 editor, by shift-clicking the Edit menu an option called "Edit block colors" appears. By selecting this, a menu will appears with a few color sliders and tools for modifying the block colors of a specific block category. Personalized colors can be saved to one's computer, but loading the colors currently does not work properly.

在其他程式語言

Scratch is one of the original languages ever to use blocks, inspiring other languages to inherit the idea. Scratch modifications contain many new blocks typically that are not present in Scratch. MIT, at which Scratch is designed, has also created other languages using blocks such as the MIT App Inventor. Stencyl is a highly-professional language that features an entire block interface for programming real-time apps and online games. Scratch Jr also has blocks which are even more friendly for younger children to understand.

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