Great question! Let's break this down clearly, since extending Bukkit's scoreboard system while maintaining version support is a common pain point for Minecraft plugin devs.

First: Don't directly implement org.bukkit.scoreboard.Team #

Your concern is valid—you can't just create a custom class that implements Team and expect it to work with Bukkit's scoreboard system. Here's why:

• Bukkit's Team instances are tightly bound to the underlying Scoreboard implementation. When you call myScoreboard.registerNewTeam("TEAM_NAME"), you get a platform-specific instance (e.g., CraftTeam for Spigot) that handles client synchronization, scoreboard logic, and internal state.
• A custom implementation won't be recognized by the scoreboard, so features like friendly fire toggles, name tag visibility, or scoreboard integration won't work as expected. You'd also lose the ability to sync team data to players' clients.

The better approach: Use a Wrapper/Decorator Class #

Instead of implementing the interface, wrap the native Team instance in your own custom class. This lets you:

1. Reuse all of Bukkit's built-in Team features (friendly fire, invisible teammate visibility, scoreboard integration)
2. Add your own custom methods/fields (like team stats, custom player management logic)
3. Maintain full compatibility with Bukkit's scoreboard system

Example Wrapper Class #

import org.bukkit.entity.Player;
import org.bukkit.scoreboard.Team;

public class CustomTeam {
    // Hold the native Bukkit Team instance
    private final Team bukkitTeam;
    // Custom fields for your mini-game
    private int teamScore = 0;
    private boolean isEliminated = false;

    public CustomTeam(Team bukkitTeam) {
        this.bukkitTeam = bukkitTeam;
    }

    // Delegate all native Team methods to the wrapped instance
    public void addPlayer(Player player) {
        bukkitTeam.addPlayer(player);
    }

    public void removePlayer(Player player) {
        bukkitTeam.removePlayer(player);
    }

    public void setAllowFriendlyFire(boolean allow) {
        bukkitTeam.setAllowFriendlyFire(allow);
    }

    public void setCanSeeFriendlyInvisibles(boolean allow) {
        bukkitTeam.setCanSeeFriendlyInvisibles(allow);
    }

    // Add your custom methods
    public void addScore(int points) {
        this.teamScore += points;
        // Optional: Sync this score to the sidebar scoreboard
        updateSidebarScore();
    }

    public int getTeamScore() {
        return this.teamScore;
    }

    public void eliminateTeam() {
        this.isEliminated = true;
        // Custom logic: Remove all players, update scoreboard, etc.
        for (Player player : bukkitTeam.getPlayers()) {
            bukkitTeam.removePlayer(player);
        }
    }

    // Helper to access the native Team if needed
    public Team getBukkitTeam() {
        return bukkitTeam;
    }

    private void updateSidebarScore() {
        // Implement your sidebar score update logic here
    }
}

How to use it #

When creating teams, just wrap the native Team instance returned by the scoreboard:

Scoreboard scoreboard = Bukkit.getScoreboardManager().getMainScoreboard();
Team nativeTeam = scoreboard.registerNewTeam("RED_TEAM");
CustomTeam redTeam = new CustomTeam(nativeTeam);

// Now use your custom team class
redTeam.setAllowFriendlyFire(false);
redTeam.setCanSeeFriendlyInvisibles(true);
redTeam.addScore(10);

Version Compatibility Tips (1.8+) #

Since you need to support Spigot 1.8 and newer, you'll need to handle changes to the Team interface across versions:

• Name Tag Visibility: In 1.8, this uses string values like "always" or "hideForOtherTeams". In 1.13+, it uses the NameTagVisibility enum. Use version checks to call the correct method:

  public void setNameTagVisibility(String visibility) {
        if (Bukkit.getVersion().contains("1.8")) {
            // 1.8 uses String parameter
            bukkitTeam.setNameTagVisibility(visibility);
        } else {
            // 1.13+ uses NameTagVisibility enum
            org.bukkit.scoreboard.NameTagVisibility enumVis = org.bukkit.scoreboard.NameTagVisibility.valueOf(visibility.toUpperCase());
            bukkitTeam.setNameTagVisibility(enumVis);
        }
    }
  

• Missing Methods: Some features (like setCanSeeFriendlyInvisibles) were added in 1.9. For 1.8 support, wrap these calls in a version check to avoid NoSuchMethodError:

  public void enableFriendlyInvisibles() {
        if (!Bukkit.getVersion().contains("1.8")) {
            bukkitTeam.setCanSeeFriendlyInvisibles(true);
        }
        // For 1.8, you might need a workaround like using packets if necessary
    }
  

• Avoid Deprecations: Some methods (like addPlayer(Player) vs addEntry(String) in 1.13+) are deprecated. Use reflection or version-specific logic to call the non-deprecated methods where possible.

Final Notes #

• The wrapper pattern is flexible and low-risk—you won't break Bukkit's internal scoreboard logic.
• For global team management, create a TeamManager class that tracks all your CustomTeam instances, making it easy to retrieve teams by name, player, or native Team instance.

内容的提问来源于stack exchange，提问作者CodingTil