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La tabla de clasificación en la nube no funciona - guía de solución de problemas

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MD

MinecartDodger

Posted on January 7, 2025 • Intermediate

🏆 Cloud leaderboard won’t save data

I’m making a minecart dodge game and I want a leaderboard to track high scores. I’ve created the leaderboard system, but it won’t save any data consistently. 😞

The leaderboard sometimes works but it’s very inconsistent. I’ve tried renaming the cloud variables which helped a bit, but the problem persists.

What I need help with:

  • Why cloud variables aren’t saving reliably
  • How to make the leaderboard more consistent
  • Best practices for cloud variable timing

Any help would be greatly appreciated! 🙏

CV

CloudVariable_Expert

Respondió 3 horas después • ⭐ Mejor Respuesta

¡Excelente pregunta @MinecartDodger! Los problemas con las variables de nube son muy comunes. Aquí tienes una solución completa para arreglar tu tabla de clasificación:

⏱️ Understanding Cloud Variable Timing

The main issue is that cloud variables can only be updated once every 0.1 seconds. Any faster updates will be ignored by Scratch, causing data loss.

    // Wrong way - too fast updates
when flag clicked
forever
set [☁ score1 v] to (player1 score)
set [☁ score2 v] to (player2 score)
set [☁ score3 v] to (player3 score)
end

✅ Proper Cloud Variable Management

Here’s the correct way to handle cloud variable updates:

    // Correct way - with timing control
when flag clicked
set [update timer v] to [0]
forever
if <(update timer) = [0]> then
if <(current score) > (☁ high score)> then
set [☁ high score v] to (current score)
set [☁ player name v] to (player name)
set [update timer v] to [6] // Wait 6 frames (0.1 seconds)
end
else
change [update timer v] by [-1]
end
end

🏆 Complete Leaderboard System

Here’s a robust leaderboard implementation:

    // Initialize leaderboard
when flag clicked
set [☁ score1 v] to [0]
wait (0.2) seconds
set [☁ score2 v] to [0]
wait (0.2) seconds
set [☁ score3 v] to [0]
wait (0.2) seconds
set [☁ name1 v] to [---]
wait (0.2) seconds
set [☁ name2 v] to [---]
wait (0.2) seconds
set [☁ name3 v] to [---]
  
    // Update leaderboard when game ends
define update leaderboard (new score) (player name)
if <(new score) > (☁ score1)> then
set [☁ score3 v] to (☁ score2)
wait (0.2) seconds
set [☁ name3 v] to (☁ name2)
wait (0.2) seconds
set [☁ score2 v] to (☁ score1)
wait (0.2) seconds
set [☁ name2 v] to (☁ name1)
wait (0.2) seconds
set [☁ score1 v] to (new score)
wait (0.2) seconds
set [☁ name1 v] to (player name)
else
if <(new score) > (☁ score2)> then
set [☁ score3 v] to (☁ score2)
wait (0.2) seconds
set [☁ name3 v] to (☁ name2)
wait (0.2) seconds
set [☁ score2 v] to (new score)
wait (0.2) seconds
set [☁ name2 v] to (player name)
else
if <(new score) > (☁ score3)> then
set [☁ score3 v] to (new score)
wait (0.2) seconds
set [☁ name3 v] to (player name)
end
end
end

🔧 Troubleshooting Tips

  • Use unique variable names: Avoid common names like “score” or “data”
  • Add delays: Always wait 0.1-0.2 seconds between cloud variable updates
  • Limit updates: Only update when necessary (game end, new high score)
  • Test thoroughly: Cloud variables behave differently when shared vs. unshared

This should solve your consistency issues! Let me know if you need clarification on any part! 😊

MD

MinecartDodger

Replied 45 minutes later

@CloudVariable_Expert This is incredibly helpful! Thank you so much! 🎉

I implemented the timing delays and the leaderboard is working perfectly now. The 0.2 second delays were the key - I had no idea about the cloud variable timing restrictions.

One quick follow-up: Is there a way to make the leaderboard display look nicer on the stage?

UI

UIDesigner_Pro

Replied 1 hour later

@MinecartDodger Great question! Here’s how to create a beautiful leaderboard display:

    // Create leaderboard display sprite
when flag clicked
go to x: [0] y: [0]
set size to [100] %
clear
set pen color to [#2c3e50]
set pen size to [3]

// Draw leaderboard background
pen up
go to x: [-150] y: [100]
pen down
repeat [4]
move [300] steps
turn right [90] degrees
end
pen up

// Display scores
go to x: [-120] y: [70]
set [text v] to [🏆 LEADERBOARD 🏆]
go to x: [-120] y: [40]
set [text v] to (join [1st: ] (join (☁ name1) (join [ - ] (☁ score1))))
go to x: [-120] y: [10]
set [text v] to (join [2nd: ] (join (☁ name2) (join [ - ] (☁ score2))))
go to x: [-120] y: [-20]
set [text v] to (join [3rd: ] (join (☁ name3) (join [ - ] (☁ score3))))

This creates a nice bordered leaderboard with proper formatting! ✨

VB

Vibelf_Community

Pinned Message • Moderator

🚀 Want to Master Cloud Variables?

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  • 🌐 Multiplayer game systems
  • 💾 Save/load game progress
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