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Building a highscore table system

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SP

ScoreKeeper_Pro

Posted on January 23, 2024 • Advanced

🏆 Need help with highscore table system

Hey everyone! I’m working on a comprehensive highscore table for my game and need help with the logic. My system stores data in cloud variables with this format:

placeusernamescore

I need to figure out how to:

  • Check if a new score beats any existing scores
  • Insert the new score in the correct position
  • Shift other scores down properly
  • Extract individual scores from the encoded data

I already have the encode/decode working, but the comparison and insertion logic is tricky! 🤔

LB

LeaderboardMaster

Replied 2 hours later • ⭐ Best Answer

Excellent question @ScoreKeeper_Pro! Highscore tables are complex but very rewarding to implement. Here’s a complete solution for your leaderboard system:

🏆 Highscore System Flow

Here’s how the complete leaderboard system works:

flowchart TD A[🎮 Game End] --> B[Get Final Score] B --> C[Load Highscore Data] C --> D[Parse Existing Scores] D --> E[Compare with Position 1] E --> F{Score > Position 1?} F -->|Yes| G[Insert at Position 1] F -->|No| H[Compare with Position 2] H --> I{Score > Position 2?} I -->|Yes| J[Insert at Position 2] I -->|No| K[Compare with Position 3] K --> L{Score > Position 3?} L -->|Yes| M[Insert at Position 3] L -->|No| N[Compare with Position 4] N --> O{Score > Position 4?} O -->|Yes| P[Insert at Position 4] O -->|No| Q[Compare with Position 5] Q --> R{Score > Position 5?} R -->|Yes| S[Insert at Position 5] R -->|No| T[Score Not High Enough] G --> U[Shift All Scores Down] J --> U M --> U P --> U S --> U U --> V[Encode New Data] V --> W[Save to Cloud Variable] W --> X[🎉 Display New Leaderboard] T --> Y[😔 Better Luck Next Time] style A fill:#e1f5fe style G fill:#e8f5e8 style X fill:#fff3e0 style Y fill:#ffebee

🔧 Step 1: Data Structure Setup

First, set up your lists and variables:

    when flag clicked
// Create lists for leaderboard data
delete all of [Leaderboard Names v]
delete all of [Leaderboard Scores v]
delete all of [Leaderboard Places v]

// Load data from cloud variable
set [leaderboard data v] to (☁ HighscoreTable)
parse leaderboard data

📊 Step 2: Parse Leaderboard Data

Extract individual scores from the encoded string:

    define parse leaderboard data
set [current position v] to [1]
set [data position v] to [1]
repeat [5] // Top 5 scores
// Extract place number
set [place v] to []
repeat until <(letter [data position] of (leaderboard data)) = [|]>
set [place v] to (join (place) (letter [data position] of (leaderboard data)))
change [data position v] by [1]
end
change [data position v] by [1] // Skip the |

// Extract username
set [username v] to []
repeat until <(letter [data position] of (leaderboard data)) = [|]>
set [username v] to (join (username) (letter [data position] of (leaderboard data)))
change [data position v] by [1]
end
change [data position v] by [1] // Skip the |

// Extract score
set [score v] to []
repeat until <<(letter [data position] of (leaderboard data)) = [;]> or <(data position) > (length of (leaderboard data))>>
set [score v] to (join (score) (letter [data position] of (leaderboard data)))
change [data position v] by [1]
end
change [data position v] by [1] // Skip the ;

// Add to lists
add (place) to [Leaderboard Places v]
add (username) to [Leaderboard Names v]
add (score) to [Leaderboard Scores v]

change [current position v] by [1]
end

🎯 Step 3: Score Comparison System

Check if the new score qualifies for the leaderboard:

    define check new score (player name) (new score)
set [insertion position v] to [0]
set [i v] to [1]
repeat (length of [Leaderboard Scores v])
if <(new score) > (item [i] of [Leaderboard Scores v])> then
set [insertion position v] to (i)
stop [this script v]
end
change [i v] by [1]
end

// Check if it qualifies for 6th place (if leaderboard not full)
if <<(length of [Leaderboard Scores v]) < [5]> and <(insertion position) = [0]>> then
set [insertion position v] to ((length of [Leaderboard Scores v]) + [1])
end

if <(insertion position) > [0]> then
insert new score (player name) (new score) (insertion position)
else
say [Sorry, your score didn't make the leaderboard!] for [3] seconds
end

📝 Step 4: Score Insertion Logic

Insert the new score and shift others down:

    define insert new score (player name) (new score) (position)
// Shift scores down from the bottom
set [i v] to [5]
repeat until <(i) < (position)>
if <(i) ≤ (length of [Leaderboard Scores v])> then
if <(i) = [5]> then
// Remove the 5th place score
delete [5] of [Leaderboard Places v]
delete [5] of [Leaderboard Names v]
delete [5] of [Leaderboard Scores v]
else
// Shift score down one position
replace item ((i) + [1]) of [Leaderboard Places v] with (item [i] of [Leaderboard Places v])
replace item ((i) + [1]) of [Leaderboard Names v] with (item [i] of [Leaderboard Names v])
replace item ((i) + [1]) of [Leaderboard Scores v] with (item [i] of [Leaderboard Scores v])
end
end
change [i v] by [-1]
end

// Insert the new score
if <(position) ≤ (length of [Leaderboard Scores v])> then
replace item [position] of [Leaderboard Places v] with (position)
replace item [position] of [Leaderboard Names v] with (player name)
replace item [position] of [Leaderboard Scores v] with (new score)
else
add (position) to [Leaderboard Places v]
add (player name) to [Leaderboard Names v]
add (new score) to [Leaderboard Scores v]
end

// Update the cloud variable
encode and save leaderboard

💾 Step 5: Encode and Save Data

Convert the lists back to cloud variable format:

    define encode and save leaderboard
set [encoded data v] to []
set [i v] to [1]
repeat (length of [Leaderboard Scores v])
set [encoded data v] to (join (encoded data) (join (item [i] of [Leaderboard Places v]) [|]))
set [encoded data v] to (join (encoded data) (join (item [i] of [Leaderboard Names v]) [|]))
set [encoded data v] to (join (encoded data) (join (item [i] of [Leaderboard Scores v]) [;]))
change [i v] by [1]
end

set [☁ HighscoreTable v] to (encoded data)

🎮 Step 6: Main Game Integration

Use the system in your game:

    // At game end
when I receive [game over v]
ask [Enter your name for the leaderboard:] and wait
check new score (answer) (Score)
display leaderboard

📺 Step 7: Display System

Show the leaderboard to players:

    define display leaderboard
clear
set [display text v] to [🏆 HIGH SCORES 🏆\n\n]
set [i v] to [1]
repeat (length of [Leaderboard Scores v])
set [rank emoji v] to [📍]
if <(i) = [1]> then
set [rank emoji v] to [🥇]
else
if <(i) = [2]> then
set [rank emoji v] to [🥈]
else
if <(i) = [3]> then
set [rank emoji v] to [🥉]
end
end
end

set [display text v] to (join (display text) (join (rank emoji) (join [ ] (join (item [i] of [Leaderboard Names v]) (join [ - ] (join (item [i] of [Leaderboard Scores v]) [\n]))))))
change [i v] by [1]
end

say (display text) for [10] seconds

This system handles all the complex logic of comparing scores, inserting them in the right position, and maintaining a proper leaderboard! 🏆

SP

ScoreKeeper_Pro

Replied 1 hour later

@LeaderboardMaster This is absolutely incredible! Thank you so much! 🎉

The parsing logic is exactly what I needed. One quick question - how do I handle cases where the cloud variable might be empty initially?

CV

CloudVariable_Expert

Replied 30 minutes later

@ScoreKeeper_Pro Great question! Here’s how to handle empty cloud variables:

    define initialize leaderboard
if <(length of (☁ HighscoreTable)) = [0]> then
// Create default leaderboard
set [☁ HighscoreTable v] to [1|CPU|1000;2|CPU|800;3|CPU|600;4|CPU|400;5|CPU|200;]
end
parse leaderboard data

Also add error checking for corrupted data:

    define safe parse leaderboard data
if <(☁ HighscoreTable) contains [|]> then
parse leaderboard data
else
// Data is corrupted, reset to defaults
initialize leaderboard
end

This prevents crashes and ensures your leaderboard always works! 🛡️

VB

Vibelf_Community

Pinned Message • Moderator

🏆 Want to Master Advanced Leaderboard Systems?

Fantastic discussion on highscore tables! For those looking to create even more sophisticated leaderboard systems, our community can help you implement:

  • 🌍 Global vs. local leaderboards
  • 📊 Multiple scoring categories
  • 🔒 Anti-cheat protection systems
  • ⏰ Time-based leaderboard resets

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