Show us how to create a Level Up system in Scratch

 To create a Level Up system, we need to combine Variables (to track progress) and Operators (to check if the conditions are met).

Here is how you can build it in Scratch, explained in English.

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1. The Variables You Need

First, you need to create two variables:

• Score: To keep track of the player's current points.

• Level: To keep track of which level the player is on.

2. The Logic (The Script)

We will use a Loop to constantly check the score, and an Operator to compare the Score to a target number (e.g., 10 points).

The Logic Flow:

1. When the game starts, set Score to 0 and Level to 1.

2. Every time the player does something good, change Score by 1.

3. Check: If Score is greater than 9, then:

   • Increase Level by 1.

   • Reset Score to 0 (or keep it and increase the next goal).

   • Play a "Level Up" sound.

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3. Example Scratch Script

You can place this script inside your main player Sprite:

コード スニペット

when green flag clicked
set [Score v] to [0]
set [Level v] to [1]
forever
    if <(Score) > [9]> then
        change [Level v] by (1)
        set [Score v] to [0]
        play sound [Magic Spell v] until done
        say (join [Welcome to Level ] (Level)) for (2) seconds
    end
end

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4. Why this is OOP-friendly

• Encapsulation: The Level and Score variables are encapsulated within the game logic.

• Events: The "Level Up" moment can trigger a Broadcast. For example, you could broadcast Level 2 Start to change the Backdrop or spawn new enemies.

5. Advanced Version (Using Math Operators)

If you want the game to get harder, you can make the target score higher for each level using a math formula:

• Instead of checking if Score > 9, you could check if Score > ((Level) * (10)).

• Level 1 would need 10 points, Level 2 would need 20, and so on.

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Summary of Blocks Used

• Variables: set and change blocks.

• Operators: The ( ) > ( ) (Greater than) block and the join block for the speech bubble.

• Control: The forever loop and if/then condition.

📋 Copy Icon: You can copy this logic to use in your next Scratch game!

Would you like me to show you how to add a Broadcast block to this script so the Backdrop changes automatically when you Level Up?