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You have learnt about Scratch in the previous chapter. Scratch is a software which helps you
create many games. There are many versions of Scratch. The latest version is Scratch 3.0.
You know that Scratch blocks are divided into different categories. Each block performs a
different function. Let us recall some previous tasks and also learn about these blocks in
detail.
Block Categories
Blocks are the codes or commands used to create a program in Scratch. It looks like a puzzle
piece and each block connects with the other block to perform a task. The blocks in Scratch
are divided into different categories based on their functions. In most of these blocks, you
can change the value in the block to suit your script.
Motion Looks Sound Events Control Sensing Operators Variables My Blocks
Motion Blocks
The blocks that are used to control the movement of a Sprite are known as Motion blocks.
They are in blue colour. Some of the commonly used motion blocks are:
block lets the Sprite move forward (in the direction it is facing) the number of
steps given in the text box in the block. When we write the value with a minus (–) sign, the
Sprite moves backward, e.g., move – 10 steps .
block lets the Sprite turn in a clockwise direction by the given degrees and
block turns the Sprite in an anti-clockwise direction by the given degrees.
To make the Sprite jump to a new position on the stage, use block. This block
gives the x and y positions of the Sprite on the stage.
Use to tell the Sprite to follow one of the two given options: the mouse-pointer
or a random position.
block makes the Sprite flip over if it touches the edge of the screen.
block is used to set the rotation style of a Sprite. The
options to choose from are left-right, don’t rotate and all around.
Combine Motion and Looks Blocks to animate a Sprite.
More on Scratch 77

