001/*
002 * PlotSquared, a land and world management plugin for Minecraft.
003 * Copyright (C) IntellectualSites <https://intellectualsites.com>
004 * Copyright (C) IntellectualSites team and contributors
005 *
006 * This program is free software: you can redistribute it and/or modify
007 * it under the terms of the GNU General Public License as published by
008 * the Free Software Foundation, either version 3 of the License, or
009 * (at your option) any later version.
010 *
011 * This program is distributed in the hope that it will be useful,
012 * but WITHOUT ANY WARRANTY; without even the implied warranty of
013 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
014 * GNU General Public License for more details.
015 *
016 * You should have received a copy of the GNU General Public License
017 * along with this program.  If not, see <https://www.gnu.org/licenses/>.
018 */
019package com.plotsquared.bukkit.listener;
020
021import com.google.inject.Inject;
022import com.plotsquared.bukkit.util.BukkitEntityUtil;
023import com.plotsquared.bukkit.util.BukkitUtil;
024import com.plotsquared.core.configuration.caption.TranslatableCaption;
025import com.plotsquared.core.location.Location;
026import com.plotsquared.core.permissions.Permission;
027import com.plotsquared.core.player.PlotPlayer;
028import com.plotsquared.core.plot.Plot;
029import com.plotsquared.core.plot.PlotArea;
030import com.plotsquared.core.plot.PlotHandler;
031import com.plotsquared.core.plot.flag.implementations.ProjectilesFlag;
032import com.plotsquared.core.plot.world.PlotAreaManager;
033import com.plotsquared.core.util.PlotFlagUtil;
034import net.kyori.adventure.text.minimessage.Template;
035import org.bukkit.entity.Entity;
036import org.bukkit.entity.LivingEntity;
037import org.bukkit.entity.Player;
038import org.bukkit.entity.Projectile;
039import org.bukkit.entity.ThrownPotion;
040import org.bukkit.event.EventHandler;
041import org.bukkit.event.EventPriority;
042import org.bukkit.event.Listener;
043import org.bukkit.event.entity.LingeringPotionSplashEvent;
044import org.bukkit.event.entity.PotionSplashEvent;
045import org.bukkit.event.entity.ProjectileHitEvent;
046import org.bukkit.event.entity.ProjectileLaunchEvent;
047import org.bukkit.projectiles.BlockProjectileSource;
048import org.bukkit.projectiles.ProjectileSource;
049import org.checkerframework.checker.nullness.qual.NonNull;
050
051@SuppressWarnings("unused")
052public class ProjectileEventListener implements Listener {
053
054    private final PlotAreaManager plotAreaManager;
055
056    @Inject
057    public ProjectileEventListener(final @NonNull PlotAreaManager plotAreaManager) {
058        this.plotAreaManager = plotAreaManager;
059    }
060
061    @EventHandler(priority = EventPriority.HIGHEST, ignoreCancelled = true)
062    public void onLingeringPotionSplash(LingeringPotionSplashEvent event) {
063        // Cancelling projectile hit events still results in area effect clouds.
064        // We need to cancel the splash events to get rid of those.
065        onProjectileHit(event);
066    }
067
068    @EventHandler(priority = EventPriority.HIGHEST, ignoreCancelled = true)
069    public void onPotionSplash(PotionSplashEvent event) {
070        ThrownPotion damager = event.getPotion();
071        Location location = BukkitUtil.adapt(damager.getLocation());
072        if (!this.plotAreaManager.hasPlotArea(location.getWorldName())) {
073            return;
074        }
075        int count = 0;
076        for (LivingEntity victim : event.getAffectedEntities()) {
077            if (!BukkitEntityUtil.entityDamage(damager, victim)) {
078                event.setIntensity(victim, 0);
079                count++;
080            }
081        }
082        if (count > 0 && count == event.getAffectedEntities().size()) {
083            event.setCancelled(true);
084        } else {
085            // Cancelling projectile hit events still results in potions
086            // splashing in the world. We need to cancel the splash events to
087            // avoid that.
088            onProjectileHit(event);
089        }
090    }
091
092    @EventHandler(ignoreCancelled = true)
093    public void onProjectileLaunch(ProjectileLaunchEvent event) {
094        Projectile entity = event.getEntity();
095        ProjectileSource shooter = entity.getShooter();
096        if (!(shooter instanceof Player)) {
097            return;
098        }
099        Location location = BukkitUtil.adapt(entity.getLocation());
100        PlotArea area = location.getPlotArea();
101        if (area == null) {
102            return;
103        }
104        PlotPlayer<Player> pp = BukkitUtil.adapt((Player) shooter);
105        Plot plot = location.getOwnedPlot();
106
107        if (plot == null) {
108            if (!PlotFlagUtil.isAreaRoadFlagsAndFlagEquals(area, ProjectilesFlag.class, true) && !pp.hasPermission(
109                    Permission.PERMISSION_ADMIN_PROJECTILE_ROAD
110            )) {
111                pp.sendMessage(
112                        TranslatableCaption.of("permission.no_permission_event"),
113                        Template.of("node", String.valueOf(Permission.PERMISSION_ADMIN_PROJECTILE_ROAD))
114                );
115                entity.remove();
116                event.setCancelled(true);
117            }
118        } else if (!plot.hasOwner()) {
119            if (!pp.hasPermission(Permission.PERMISSION_ADMIN_PROJECTILE_UNOWNED)) {
120                pp.sendMessage(
121                        TranslatableCaption.of("permission.no_permission_event"),
122                        Template.of("node", String.valueOf(Permission.PERMISSION_ADMIN_PROJECTILE_UNOWNED))
123                );
124                entity.remove();
125                event.setCancelled(true);
126            }
127        } else if (!plot.isAdded(pp.getUUID())) {
128            if (!plot.getFlag(ProjectilesFlag.class)) {
129                if (!pp.hasPermission(Permission.PERMISSION_ADMIN_PROJECTILE_OTHER)) {
130                    pp.sendMessage(
131                            TranslatableCaption.of("permission.no_permission_event"),
132                            Template.of("node", String.valueOf(Permission.PERMISSION_ADMIN_PROJECTILE_OTHER))
133                    );
134                    entity.remove();
135                    event.setCancelled(true);
136                }
137            }
138        }
139    }
140
141    @EventHandler
142    public void onProjectileHit(ProjectileHitEvent event) {
143        Projectile entity = event.getEntity();
144        Location location = BukkitUtil.adapt(entity.getLocation());
145        if (!this.plotAreaManager.hasPlotArea(location.getWorldName())) {
146            return;
147        }
148        PlotArea area = location.getPlotArea();
149        if (area == null) {
150            return;
151        }
152        Plot plot = area.getPlot(location);
153        ProjectileSource shooter = entity.getShooter();
154        if (shooter instanceof Player) {
155            if (!((Player) shooter).isOnline()) {
156                if (plot != null) {
157                    if (plot.isAdded(((Player) shooter).getUniqueId()) || plot.getFlag(ProjectilesFlag.class)) {
158                        return;
159                    }
160                } else if (PlotFlagUtil.isAreaRoadFlagsAndFlagEquals(area, ProjectilesFlag.class, true)) {
161                    return;
162                }
163
164                entity.remove();
165                event.setCancelled(true);
166                return;
167            }
168
169            PlotPlayer<?> pp = BukkitUtil.adapt((Player) shooter);
170            if (plot == null) {
171                if (!PlotFlagUtil.isAreaRoadFlagsAndFlagEquals(area, ProjectilesFlag.class, true) && !pp.hasPermission(
172                        Permission.PERMISSION_ADMIN_PROJECTILE_UNOWNED
173                )) {
174                    entity.remove();
175                    event.setCancelled(true);
176                }
177                return;
178            }
179            if (plot.isAdded(pp.getUUID()) || pp.hasPermission(Permission.PERMISSION_ADMIN_PROJECTILE_OTHER) || plot.getFlag(
180                    ProjectilesFlag.class)) {
181                return;
182            }
183            entity.remove();
184            event.setCancelled(true);
185            return;
186        }
187        if (!(shooter instanceof Entity) && shooter != null) {
188            if (plot == null) {
189                entity.remove();
190                event.setCancelled(true);
191                return;
192            }
193            Location sLoc =
194                    BukkitUtil.adapt(((BlockProjectileSource) shooter).getBlock().getLocation());
195            if (!area.contains(sLoc.getX(), sLoc.getZ())) {
196                entity.remove();
197                event.setCancelled(true);
198                return;
199            }
200            Plot sPlot = area.getOwnedPlotAbs(sLoc);
201            if (sPlot == null || !PlotHandler.sameOwners(plot, sPlot)) {
202                entity.remove();
203                event.setCancelled(true);
204            }
205        }
206    }
207
208}