AnuraCore/src/de/anura/core/Features.java

package de.anura.core;

import de.anura.core.API.Core;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.HashMap;
import org.bukkit.Bukkit;
import org.bukkit.GameMode;
import org.bukkit.entity.Entity;
import org.bukkit.entity.Player;
import org.bukkit.event.EventHandler;
import org.bukkit.event.Listener;
import org.bukkit.event.player.PlayerMoveEvent;
import org.bukkit.event.player.PlayerToggleFlightEvent;
import org.bukkit.util.Vector;

public class Features implements Listener {

    public enum Feature {

        DOUBLE_JUMP(1);

        private Feature(int id) {
            this.featureId = id;
        }
        private final int featureId;
        private static final HashMap<Integer, Feature> BY_ID = new HashMap<>();

        public static Feature getById(Integer id) {
            return BY_ID.get(id);
        }

        static {
            for (Feature feature : values()) {
                BY_ID.put(feature.featureId, feature);
            }
        }
    }

    public Features() {
        Bukkit.getPluginManager().registerEvents(this, AnuraCore.getInstance());
    }

    private final HashMap<Player, ArrayList<Feature>> playerFeatures = new HashMap<>();
    private final HashMap<Player, Boolean> canDoubleJump = new HashMap<>();
    private final HashMap<Player, HashMap<Feature, Boolean>> featureEnabled = new HashMap<>();

    public void updateFeatures(Player P) {
        if (!mainLobby()) {
            return;
        }
        try {
            ResultSet rs = Core.getMySql().querySelect("SELECT featureId FROM coreFeatures WHERE playerId = (SELECT id FROM players WHERE uuid = '" + P.getUniqueId().toString() + "')");
            resetPlayerFeatures(P);
            playerFeatures.put(P, new ArrayList<Feature>());
            featureEnabled.put(P, new HashMap<Feature, Boolean>());
            while (rs.next()) {
                if (Feature.getById(rs.getInt("featureId")) != null) {
                    this.addFeature(P, Feature.getById(rs.getInt("featureId")));
                    featureEnabled.get(P).put(Feature.DOUBLE_JUMP, true);
                }
            }
        } catch (SQLException ex) {
            System.err.println("Could not update player features because of a sql exception: " + ex.getLocalizedMessage());
        }
    }

    public void updateFeaturesAll() {
        if (!mainLobby()) {
            return;
        }
        for (Player P : Bukkit.getOnlinePlayers()) {
            updateFeatures(P);
        }
    }

    public void reset() {
        for (Player P : Bukkit.getOnlinePlayers()) {
            this.resetPlayerFeatures(P);
        }
    }

    public void disableFeature(Player P, Feature f) {
        if (!mainLobby()) {
            return;
        }
        if (f == Feature.DOUBLE_JUMP) {
            if (!hasFeature(P, f)) {
                Core.statusMsg(P, "dont_have_dbl_jump", false);
                return;
            }
            featureEnabled.get(P).put(f, false);
            canDoubleJump.put(P, false);
            Core.statusMsg(P, "dbl_jump_off", true);
            P.setExp(0);
            if (P.getGameMode() != GameMode.CREATIVE) {
                P.setAllowFlight(false);
            }
        }
    }

    public void enableFeature(Player P, Feature f) {
        if (!mainLobby()) {
            return;
        }
        if (f == Feature.DOUBLE_JUMP) {
            if (!hasFeature(P, f)) {
                Core.statusMsg(P, "dont_have_dbl_jump", false);
                return;
            }
            featureEnabled.get(P).put(f, true);
            P.setAllowFlight(true);
            P.setExp(1);
            canDoubleJump.put(P, true);
            Core.statusMsg(P, "dbl_jump_on", true);
        }
    }

    public boolean hasFeature(Player P, Feature f) {
        if (!mainLobby()) {
            return false;
        }
        if (playerFeatures.containsKey(P)) {
            return playerFeatures.get(P).contains(f);
        }
        return false;
    }

    private void resetPlayerFeatures(Player P) {
        if (!playerFeatures.containsKey(P)) {
            return;
        }
        for (Feature f : (ArrayList<Feature>) playerFeatures.get(P).clone()) {
            removeFeature(P, f);
        }
    }

    public void removeFeature(Player P, Feature f) {
        if (!mainLobby()) {
            return;
        }
        if (playerFeatures.containsKey(P)) {
            playerFeatures.get(P).remove(f);
        }
        if (f.equals(Feature.DOUBLE_JUMP)) {
            if (!P.getGameMode().equals(GameMode.CREATIVE)) {
                P.setAllowFlight(false);
                P.setExp(0);
            }
            this.canDoubleJump.put(P, false);
        }
    }

    public void addFeature(Player P, Feature f) {
        if (!mainLobby()) {
            return;
        }
        if (playerFeatures.containsKey(P) && !hasFeature(P, f)) {
            playerFeatures.get(P).add(f);
        }
        if (f.equals(Feature.DOUBLE_JUMP)) {
            P.setAllowFlight(true);
            P.setExp(1);
            this.canDoubleJump.put(P, true);
        }
    }

    private boolean mainLobby() {
        return AnuraCore.getInstance().getConfig().getBoolean("is-main-lobby");
    }

    @EventHandler
    public void onPlayerMove(PlayerMoveEvent event) {
        if (!mainLobby()) {
            return;
        }
        Player P = event.getPlayer();
        if (this.hasFeature(P, Feature.DOUBLE_JUMP)) {
            if (this.canDoubleJump.containsKey(P) && !this.canDoubleJump.get(P) && ((Entity) P).isOnGround() && this.featureEnabled.get(P).get(Feature.DOUBLE_JUMP)) {
                this.canDoubleJump.put(P, true);
                P.setExp(1);
            }
        }
    }

    @EventHandler
    public void onToggleFlight(PlayerToggleFlightEvent event) {
        if (!mainLobby()) {
            return;
        }
        Player P = event.getPlayer();

        if (this.hasFeature(P, Feature.DOUBLE_JUMP) && !P.getGameMode().equals(GameMode.CREATIVE)) {
            if (this.canDoubleJump.containsKey(P) && this.canDoubleJump.get(P)) {
                this.canDoubleJump.put(P, false);
                P.setExp(0);
                Vector v = P.getLocation().getDirection();
                P.setVelocity(v.multiply(new Vector(1, 2, 1)));
                P.setVelocity(P.getVelocity().setY(1));
            } else {
                Vector v = P.getVelocity();
                P.setVelocity(v.setY(-0.4));
            }
            event.setCancelled(true);
        }
    }
}