Highlighter API

HuskClaims provides the Highlighter interface which you can implement to create your own highlighter for displaying claims to players, which you can then provide via the HuskClaimsAPI#registerHighlighter(Highlighter) method.

Table of contents

• 1. The Highlighter interface
• 2. Highlightable points
• 3. Creating your own highlighter
• 4. Registering your highlighter

1. The Highlighter interface

Note: Check the built-in abstract BlockHighlighter and extending BlockDisplayHighlighter and BlockUpdateHighlighter classes for an example of a highlighter implementation.

Highlighter is an interface for highlighting any number of Highlightables for a supplied OnlineUser in a World. Highlighters must implement the following fairly self-explanatory methods:

• #startHighlighting(OnlineUser user, World world, Collection<? extends Highlightable> toHighlight, boolean showOverlap)
  • user — The OnlineUser to highlight for (on the Bukkit platform, cast this to a BukkitUser and use getBukkitPlayer to get the org.bukkit.Player object!)
  • world — The World to highlight in.
  • toHighlight — A collection of Highlightables to highlight (see below)
  • showOverlap — A flag for whether this highlight is for showing to the user that their claim selection would overlap other claims
• #stopHighlighting(OnlineUser user)
  • user — The OnlineUser to stop highlighting for
• #getPriority() (optional)
  • Returns the priority of this highlighter as a short. The highest priority highlighter will be used. Default: 10
• #canUse(OnlineUser user) (optional)
  • Returns whether user can use this highlighter. Return false here if the user can't for some reason - e.g. if they are missing a client mod. Default: true

2. Highlightable points

A Highlightable is an interface for any world object that can be highlighted; a Claim or a ClaimSelection. Highlightables contain "points" that the highlighter may choose to get and highlight. Highlighters can choose to do whatever they want with these points, or not use this API at all; you might want to do an instanceof check to see if a Highlightable is in fact a Region and call #getCorners() for example.

Call #getHighlightPoints(ClaimWorld world, boolean showOverlap, BlockPosition viewerPosition, long rangeFromViewerToReturnPointsFor) to get a Map<Region.Point, Type>; a map of that type of point to a Type enum. The Type enum is used to determine the type of point, and can be one of:

• CORNER,
• EDGE,
• CHILD_CORNER,
• CHILD_EDGE,
• ADMIN_CORNER,
• ADMIN_EDGE,
• OVERLAP_CORNER, used when highlighting overlapping claims (pass the showOverlap argument from your startHighlighting method implementation)
• OVERLAP_EDGE, ditto above
• or SELECTION

3. Creating your own highlighter

Create your own Highlighter class by implementing the Highlighter interface:

public class MyHighlighter implements Highlighter {
    @Override
    public void startHighlighting(OnlineUser user, World world, Collection<? extends Highlightable> toHighlight, boolean showOverlap) {
        // Highlight the supplied Highlightables in the supplied world for the supplied user
    }

    @Override
    public void stopHighlighting(OnlineUser user) {
        // Stop highlighting for the supplied user
    }
    
    @Override
    public short getPriority() {
        return 10; // OPTIONAL - Specify the priority of this highlighter. Higher priorities take precedence.
    }
    
    @Override
    public boolean canUse(OnlineUser user) {
        return true; // OPTIONAL - Return whether this highlighter can work for this user.
    }
    
}

4. Registering your highlighter

You can register your highlighter by calling HuskClaimsAPI#registerHighlighter(Highlighter) with your created highlighter instance.

void onEnable() {
    huskClaims.registerHighlighter(new MyHighlighter());
}