added random drops and boss bar for Bloodmoon

craftattack/src/main/java/eu/mhsl/craftattack/spawn/craftattack/appliances/gameplay/bloodmoon/Bloodmoon.java

@@ -0,0 +1,136 @@
+package eu.mhsl.craftattack.spawn.craftattack.appliances.gameplay.bloodmoon;
+
+import eu.mhsl.craftattack.spawn.core.appliance.Appliance;
+import eu.mhsl.craftattack.spawn.core.appliance.ApplianceCommand;
+import eu.mhsl.craftattack.spawn.craftattack.appliances.gameplay.bloodmoon.commands.BloodmoonCommand;
+import eu.mhsl.craftattack.spawn.craftattack.appliances.gameplay.bloodmoon.listener.BloodmoonMonsterDeathListener;
+import eu.mhsl.craftattack.spawn.craftattack.appliances.gameplay.bloodmoon.listener.BloodmoonPlayerJoinListener;
+import org.bukkit.Bukkit;
+import org.bukkit.Material;
+import org.bukkit.boss.BarColor;
+import org.bukkit.boss.BarFlag;
+import org.bukkit.boss.BarStyle;
+import org.bukkit.boss.BossBar;
+import org.bukkit.entity.EntityType;
+import org.bukkit.entity.Player;
+import org.bukkit.event.Listener;
+import org.bukkit.inventory.ItemStack;
+import org.bukkit.potion.PotionEffect;
+import org.bukkit.potion.PotionEffectType;
+import org.jetbrains.annotations.NotNull;
+
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Map;
+import java.util.concurrent.ThreadLocalRandom;
+
+public class Bloodmoon extends Appliance {
+    // für alle Dimensionen? einstellbar machen?
+
+    public final Map<EntityType, PotionEffect[]> affectedMobEffectMap = Map.of(
+        EntityType.ZOMBIE, new PotionEffect[]{
+            new PotionEffect(PotionEffectType.WITHER, 7 * 20, 1)
+        },
+        EntityType.SKELETON, new PotionEffect[]{
+            new PotionEffect(PotionEffectType.SLOWNESS, (int) (3.5 * 20), 1)
+        },
+        EntityType.SPIDER, new PotionEffect[]{
+            new PotionEffect(PotionEffectType.POISON, 4 * 20, 1),
+            new PotionEffect(PotionEffectType.NAUSEA, 6 * 20, 10)
+        },
+        EntityType.CREEPER, new PotionEffect[]{
+            new LightningPotionEffect()
+        },
+        EntityType.HUSK, new PotionEffect[]{
+            new PotionEffect(PotionEffectType.WITHER, 7 * 20, 1)
+        },
+        EntityType.DROWNED, new PotionEffect[]{
+            new PotionEffect(PotionEffectType.WITHER, 7 * 20, 1)
+        },
+        EntityType.WITCH, new PotionEffect[]{},
+        EntityType.ZOMBIE_VILLAGER, new PotionEffect[]{
+            new PotionEffect(PotionEffectType.WITHER, 7 * 20, 1)
+        },
+        EntityType.PHANTOM, new PotionEffect[]{
+            new PotionEffect(PotionEffectType.LEVITATION, (int) (1.5 * 20), 3)
+        },
+        EntityType.ENDERMAN, new PotionEffect[]{
+            new PotionEffect(PotionEffectType.SLOWNESS, (int) (2.5 * 20), 2)
+        }
+    );
+    public final int expMultiplier = 4;
+    public final boolean lightningsActive = true;
+
+    private boolean isActive = false;
+    private final BossBar bossBar = Bukkit.createBossBar(
+        "Bloodmoon",
+        BarColor.RED,
+        BarStyle.SEGMENTED_12,
+        BarFlag.CREATE_FOG,
+        BarFlag.DARKEN_SKY
+    );
+    private final int bloodMoonLegth = 12000;
+    private final int daysBetweenBloodmoons = 1;
+    private final int minBonusDrops = 1;
+    private final int maxBonusDrops = 4;
+    private final Map<ItemStack, Integer> bonusDropWeightMap = Map.of(
+        new ItemStack(Material.IRON_INGOT, 5), 10,
+        new ItemStack(Material.GOLD_INGOT, 2), 5,
+        new ItemStack(Material.DIAMOND, 1), 1,
+        new ItemStack(Material.IRON_BLOCK, 1), 5,
+        new ItemStack(Material.GOLD_BLOCK, 1), 2
+    );
+
+    public boolean bloodmoonIsActive() {
+        return this.isActive;
+    }
+
+    public void startBloodmoon() {
+        this.isActive = true;
+        Bukkit.getOnlinePlayers().forEach(player -> this.bossBar.addPlayer(player));
+    }
+
+    public void stopBloodmoon() {
+        this.isActive = false;
+        this.bossBar.removeAll();
+    }
+
+    public void addPlayerToBossBar(Player p) {
+        this.bossBar.addPlayer(p);
+    }
+
+    public List<ItemStack> getRandomBonusDrops() {
+        int itemCount = ThreadLocalRandom.current().nextInt(this.minBonusDrops, this.maxBonusDrops + 1);
+        List<ItemStack> result = new ArrayList<>();
+        for(int i = 0; i < itemCount; i++) {
+            result.add(this.getRandomBonusDrop());
+        }
+        return result;
+    }
+
+    private ItemStack getRandomBonusDrop() {
+        int totalWeight = this.bonusDropWeightMap.values().stream().mapToInt(value -> value).sum();
+        int randomInt = ThreadLocalRandom.current().nextInt(0, totalWeight + 1);
+        int cumulativeWeight = 0;
+        for(Map.Entry<ItemStack, Integer> entry : this.bonusDropWeightMap.entrySet()) {
+            cumulativeWeight += entry.getValue();
+            if(randomInt <= cumulativeWeight) return entry.getKey();
+        }
+        return null;
+    }
+
+    @Override
+    protected @NotNull List<Listener> listeners() {
+        return List.of(
+            new BloodmoonMonsterDeathListener(),
+            new BloodmoonPlayerJoinListener()
+        );
+    }
+
+    @Override
+    protected @NotNull List<ApplianceCommand<?>> commands() {
+        return List.of(
+            new BloodmoonCommand()
+        );
+    }
+}

craftattack/src/main/java/eu/mhsl/craftattack/spawn/craftattack/appliances/gameplay/bloodmoon/LightningPotionEffect.java

@@ -0,0 +1,10 @@
+package eu.mhsl.craftattack.spawn.craftattack.appliances.gameplay.bloodmoon;
+
+import org.bukkit.potion.PotionEffect;
+import org.bukkit.potion.PotionEffectType;
+
+public class LightningPotionEffect extends PotionEffect {
+    public LightningPotionEffect() {
+        super(PotionEffectType.SLOWNESS, 0, 0);
+    }
+}

craftattack/src/main/java/eu/mhsl/craftattack/spawn/craftattack/appliances/gameplay/bloodmoon/commands/BloodmoonCommand.java

@@ -0,0 +1,44 @@
+package eu.mhsl.craftattack.spawn.craftattack.appliances.gameplay.bloodmoon.commands;
+
+import eu.mhsl.craftattack.spawn.core.appliance.ApplianceCommand;
+import eu.mhsl.craftattack.spawn.craftattack.appliances.gameplay.bloodmoon.Bloodmoon;
+import org.bukkit.command.Command;
+import org.bukkit.command.CommandSender;
+import org.jetbrains.annotations.NotNull;
+import org.jetbrains.annotations.Nullable;
+
+import java.util.List;
+
+public class BloodmoonCommand extends ApplianceCommand<Bloodmoon> {
+    public BloodmoonCommand() {
+        super("bloodmoon");
+    }
+
+    @Override
+    protected void execute(@NotNull CommandSender sender, @NotNull Command command, @NotNull String label, @NotNull String[] args) throws Exception {
+        if(args.length == 0) {
+            sender.sendMessage("Bloodmoon is currently " + (this.getAppliance().bloodmoonIsActive() ? "active." : "inactive."));
+            return;
+        }
+
+        switch(args[0]) {
+            case "start": {
+                this.getAppliance().startBloodmoon();
+                sender.sendMessage("Started bloodmoon.");
+                break;
+            }
+            case "stop": {
+                this.getAppliance().stopBloodmoon();
+                sender.sendMessage("Stopped bloodmoon.");
+                break;
+            }
+            default: throw new Error("No such option: '" + args[0] + "' !");
+        }
+    }
+
+    @Override
+    public @Nullable List<String> onTabComplete(@NotNull CommandSender sender, @NotNull Command command, @NotNull String label, @NotNull String[] args) {
+        if(args.length == 1) return List.of("start", "stop");
+        return null;
+    }
+}

craftattack/src/main/java/eu/mhsl/craftattack/spawn/craftattack/appliances/gameplay/bloodmoon/listener/BloodmoonEntityDamageListener.java

@@ -0,0 +1,25 @@
+package eu.mhsl.craftattack.spawn.craftattack.appliances.gameplay.bloodmoon.listener;
+
+import eu.mhsl.craftattack.spawn.core.appliance.ApplianceListener;
+import eu.mhsl.craftattack.spawn.craftattack.appliances.gameplay.bloodmoon.Bloodmoon;
+import org.bukkit.entity.Entity;
+import org.bukkit.entity.LivingEntity;
+import org.bukkit.entity.Projectile;
+import org.bukkit.event.EventHandler;
+import org.bukkit.event.entity.EntityDamageByEntityEvent;
+
+public class BloodmoonEntityDamageListener extends ApplianceListener<Bloodmoon> {
+    @EventHandler
+    public void onEntityDamage(EntityDamageByEntityEvent event) {
+        if(!this.getAppliance().bloodmoonIsActive()) return;
+        Entity damagerEntity = event.getDamager();
+        if(damagerEntity instanceof Projectile projectile) {
+            if(!(projectile.getShooter() instanceof Entity shooter)) return;
+            damagerEntity = shooter;
+        }
+        if(!(damagerEntity instanceof LivingEntity damager && event.getEntity() instanceof LivingEntity receiver)) return;
+        if(event.getFinalDamage() == 0) return;
+
+        // TODO: damage increase / reduction and effects
+    }
+}

craftattack/src/main/java/eu/mhsl/craftattack/spawn/craftattack/appliances/gameplay/bloodmoon/listener/BloodmoonMonsterDeathListener.java

@@ -0,0 +1,20 @@
+package eu.mhsl.craftattack.spawn.craftattack.appliances.gameplay.bloodmoon.listener;
+
+import eu.mhsl.craftattack.spawn.core.appliance.ApplianceListener;
+import eu.mhsl.craftattack.spawn.craftattack.appliances.gameplay.bloodmoon.Bloodmoon;
+import org.bukkit.entity.LivingEntity;
+import org.bukkit.event.EventHandler;
+import org.bukkit.event.entity.EntityDeathEvent;
+
+public class BloodmoonMonsterDeathListener extends ApplianceListener<Bloodmoon> {
+    @EventHandler
+    public void onMonsterDeath(EntityDeathEvent event) {
+        if(!this.getAppliance().bloodmoonIsActive()) return;
+        LivingEntity entity = event.getEntity();
+        if(!this.getAppliance().affectedMobEffectMap.containsKey(entity.getType())) return;
+
+        event.setDroppedExp(event.getDroppedExp() * this.getAppliance().expMultiplier);
+        event.getDrops().addAll(this.getAppliance().getRandomBonusDrops());
+        if(this.getAppliance().lightningsActive) event.getEntity().getWorld().strikeLightningEffect(event.getEntity().getLocation());
+    }
+}

craftattack/src/main/java/eu/mhsl/craftattack/spawn/craftattack/appliances/gameplay/bloodmoon/listener/BloodmoonPlayerJoinListener.java

@@ -0,0 +1,14 @@
+package eu.mhsl.craftattack.spawn.craftattack.appliances.gameplay.bloodmoon.listener;
+
+import eu.mhsl.craftattack.spawn.core.appliance.ApplianceListener;
+import eu.mhsl.craftattack.spawn.craftattack.appliances.gameplay.bloodmoon.Bloodmoon;
+import org.bukkit.event.EventHandler;
+import org.bukkit.event.player.PlayerJoinEvent;
+
+public class BloodmoonPlayerJoinListener extends ApplianceListener<Bloodmoon> {
+    @EventHandler
+    public void onPlayerJoin(PlayerJoinEvent event) {
+        if(!this.getAppliance().bloodmoonIsActive()) return;
+        this.getAppliance().addPlayerToBossBar(event.getPlayer());
+    }
+}