Basic HTML Version

|  | Table of Contents |  | View Full Version

Page 84 - 2629_Devagiri_C-5
P. 84

    There are two types of variables in Scratch:

                          Global Variables: These variables are created on any sprite and can be accessed
                          or modified by other sprites in the project by choosing For all sprites.

                          Local Variables: These variables are created for a specific sprite and can only
                          be used by that sprite, selected by choosing For this sprite only.

                      The variable blocks used in Scratch are:

                                                         This block refers to a custom variable that you create
                                           my variable
                                                        in your project.

                            set  my variable  to  0     This block sets the selected variable to a specific value.

                                                         This block adds or subtracts a certain number to the
                          change my variable  by  1
                                                        variable.

                                                         This block shows the value of the chosen variable on
                            show variable  my variable
                                                        the screen.

                            hide variable  my variable  This block hides the chosen variable from the screen.

                             CREATING A GAME IN SCRATCH

                      Have you ever dreamt of creating a computer game?

                      Here’s  your chance to turn it into reality with a Scratch project. Let’s learn how to
                      create a game in Scratch using Sensing blocks and Variables to make the game

                      more interactive and engaging.

                      To create a game in Scratch, follow the given steps:

                      Step    1    Choose a sprite as the main character of your game (a cat or a player).

                      Step    2    Add another sprite to be a target the player needs to touch (a star).

                      Step    3    Create a Variable and name it score v for the player sprite.

                      Step    4    Place the Star sprite at a random position on the stage.

                      Step    5    Choose a suitable backdrop for the game.

                      Step    6    Now, create the given script for your player sprite.

                      82      Premium Edition-V

| 79 80 81 82 83 84 85 86 87 88 89 |