Create and Code Games in Scratch Jr.
Scratch Jr. provides an excellent platform for young learners to explore game development in an interactive and fun way.
Developing games in Scratch Jr. not only nurtures creativity but also strengthens problem-solving skills and logical thinking.
Here’s a step-by-step guide to making a simple game, plus coding tips.
Steps to Creating a Game in Scratch Jr.
Planning the Game Concept
Before coding, it is essential to brainstorm the game idea. This includes defining the objectives, characters, and background settings.
For example, a simple game could involve a cat collecting stars while avoiding obstacles.
Designing the Game Elements
Choose or create the necessary sprites, such as characters, objects, and backgrounds.
Customize sprites using the drawing tool to make them unique.
Programming Movement and Actions
Use motion blocks to move characters up, down, left, or right.
Implement loops to create continuous movements, such as a car moving endlessly in a racing game.
Adding Interactivity
Use event blocks to trigger actions when a character is tapped or when another sprite is touched.
Include sound effects and visual changes to enhance engagement.
Implementing Game Mechanics
Introduce conditions such as “if touching, then disappear” to create challenges.
Use messaging blocks to coordinate interactions between sprites.
Testing and Refining
Playtest the game to identify any bugs or areas for improvement.
Modify the script to improve gameplay and ensure a smooth user experience.
Game Idea: Jumping over obstacle game
Objective:
The player helps the rabbit jump over a moving cactus using a jump button. If the player successfully survives for 99 seconds, the backdrop changes to a “You Win” screen, celebrating his victory. However, if the rabbit collides with the cactus at any point, the game ends with a “Game Over” backdrop.
Step 1: Set Up the Background and Sprites
- Tap the Backdrop button and select a suitable background (e.g., a desert scene).
- Add the following sprites:
- Rabbit (Player-controlled character)
- Cactus (Obstacle)
- Create Jump Button (For controlling the rabbit’s jump)
Step 2: Program the Jump Button
- Select the Jump Button sprite.
- Add this script
When Tapped → Send Message (Orange Block)
3.This allows the button to trigger the rabbit’s jump.
Step 3: Program the Rabbit’s Jump
- Select the Rabbit sprite.
- Add this script:
When Orange Message Received → Hop (or)
When Tap → Hop (or)
3.This makes the rabbit jump when the button is tapped or when the rabbit is tapped
Step 4: Program the Cactus to Move and detect Collision
- Select the Cactus sprite.
- Position the Cactus sprite at the right end.
- Add this script:
When Green Flag Clicked → Move Left (Looped Motion)
4. This keeps the cactus moving continuously from right to left.
Step 5: Detect Collision (Game Over Condition)
- Select the Cactus sprite.
- Add this script:
When Green Flag Clicked → If Rabbit and Cactus Bump → Switch to “Game Over” Backdrop
3.This makes the game end if the rabbit collides with the cactus.
Step 6: Implement the 99-Second Timer for Level 1
- Select a Clock or Timer Sprite (or create a hidden timer).
- Use a script to wait for 99 seconds, then change the backdrop.
When Green Flag Clicked → Wait (99 seconds) → Switch Backdrop to ‘YOU WIN’
Step 7: Test and Adjust
Play the game and check:
Does the jump button work?
Does the cactus move properly?
Does the “Game Over” backdrop appear on collision?
Does the game transition after 99 seconds?
Make adjustments if needed.