prestonbane/src/engine/InterestManagement/RealmMap.java

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//      Magicbane Emulator Project © 2013 - 2022
//                www.magicbane.com

package engine.InterestManagement;

import engine.math.Vector3fImmutable;
import engine.mbEnums;
import engine.net.Dispatch;
import engine.net.DispatchMessage;
import engine.net.client.msg.TerritoryChangeMessage;
import engine.objects.City;
import engine.objects.PlayerCharacter;
import engine.objects.Realm;
import engine.server.MBServerStatics;
import engine.util.MapLoader;
import org.pmw.tinylog.Logger;

import java.awt.*;
import java.util.HashMap;

import static engine.objects.Realm.getRealm;

public enum RealmMap {

    // MB Dev Notes:
    // This class loads and caches realm maps used by each
    // map set for its realm overlay.  The RealmMap loaded is
    // controlled by config entry MB_WORLD_REALMMAP
    //
    // Unlike a Heightmap this is a just color lookup; identical to
    // the old image maps used in 90s web technology.
    //
    // Realm Map images are stored on disk in /mb.data/realmmaps/

    REALM_MAP;

    private static final HashMap<Color, Integer> _rgbToIDMap = new HashMap<>();
    public static int[][] _realmImageMap;

    public static int getRealmIDByColor(Color color) {

        return _rgbToIDMap.getOrDefault(color, 0);

    }

    public static int getRealmIDAtLocation(Vector3fImmutable pos) {

        int xBuckets = (int) ((pos.getX() / MBServerStatics.MAX_WORLD_WIDTH) * MBServerStatics.SPATIAL_HASH_BUCKETSX);
        int yBuckets = (int) ((pos.getZ() / MBServerStatics.MAX_WORLD_HEIGHT) * MBServerStatics.SPATIAL_HASH_BUCKETSY);

        if (yBuckets < 0 || yBuckets >= MBServerStatics.SPATIAL_HASH_BUCKETSY
                || xBuckets < 0 || xBuckets >= MBServerStatics.SPATIAL_HASH_BUCKETSX) {
            Logger.error("Invalid range; Z: " + yBuckets + ", X: " + xBuckets);
            return 255;
        }

        return RealmMap._realmImageMap[xBuckets][yBuckets];
    }

    public static void addToColorMap(Color color, int realmID) {
        _rgbToIDMap.put(color, realmID);
    }

    public static Realm getRealmForCity(City city) {
        Realm outRealm = null;
        outRealm = city.realm;
        return outRealm;
    }

    public static Realm getRealmAtLocation(Vector3fImmutable worldVector) {

        return getRealm(RealmMap.getRealmIDAtLocation(worldVector));

    }

    public static void updateRealm(PlayerCharacter player) {

        int realmID = RealmMap.getRealmIDAtLocation(player.getLoc());

        if (realmID != player.getLastRealmID()) {
            player.setLastRealmID(realmID);
            Realm realm = Realm.getRealm(realmID);
            if (realm != null) {
                if (realm.isRuled()) {
                    City city = realm.getRulingCity();
                    if (city != null) {
                        TerritoryChangeMessage tcm = new TerritoryChangeMessage((PlayerCharacter) realm.getRulingCity().getOwner(), realm);
                        Dispatch dispatch = Dispatch.borrow(player, tcm);
                        DispatchMessage.dispatchMsgDispatch(dispatch, mbEnums.DispatchChannel.PRIMARY);
                    } else {
                        TerritoryChangeMessage tcm = new TerritoryChangeMessage(null, realm);
                        Dispatch dispatch = Dispatch.borrow(player, tcm);
                        DispatchMessage.dispatchMsgDispatch(dispatch, mbEnums.DispatchChannel.PRIMARY);
                    }

                } else {
                    TerritoryChangeMessage tcm = new TerritoryChangeMessage(null, realm);
                    Dispatch dispatch = Dispatch.borrow(player, tcm);
                    DispatchMessage.dispatchMsgDispatch(dispatch, mbEnums.DispatchChannel.PRIMARY);
                }
            }

        }


    }

    public static void loadRealmImageMap() {

        // Build color lookup map for realms from database

        for (Realm realm : Realm._realms.values()) {
            RealmMap.addToColorMap(realm.mapColor, realm.realmID);
        }

        RealmMap._realmImageMap = MapLoader.loadMap();

    }

}