Add hologram interaction (configurable)

src/main/java/de/epiceric/shopchest/config/Config.java

@@ -68,6 +68,9 @@ public class Config {
     /** Whether shops should be protected by explosions **/
     public boolean explosion_protection;
 
+    /** Whether hologram interaction should be enabled **/
+    public boolean enable_hologram_interaction;
+
     /** Whether the debug log file should be created **/
     public boolean enable_debug_log;
 
@@ -277,6 +280,7 @@ public class Config {
         buy_greater_or_equal_sell = plugin.getConfig().getBoolean("buy-greater-or-equal-sell");
         hopper_protection = plugin.getConfig().getBoolean("hopper-protection");
         two_line_prices = plugin.getConfig().getBoolean("two-line-prices");
+        enable_hologram_interaction = plugin.getConfig().getBoolean("enable-hologram-interaction");
         enable_debug_log = plugin.getConfig().getBoolean("enable-debug-log");
         explosion_protection = plugin.getConfig().getBoolean("explosion-protection");
         exclude_admin_shops = plugin.getConfig().getBoolean("shop-limits.exclude-admin-shops");

src/main/java/de/epiceric/shopchest/listeners/ShopInteractListener.java

@@ -13,6 +13,7 @@ import de.epiceric.shopchest.event.ShopInfoEvent;
 import de.epiceric.shopchest.event.ShopRemoveEvent;
 import de.epiceric.shopchest.language.LanguageUtils;
 import de.epiceric.shopchest.language.LocalizedMessage;
+import de.epiceric.shopchest.nms.Hologram;
 import de.epiceric.shopchest.shop.Shop;
 import de.epiceric.shopchest.shop.Shop.ShopType;
 import de.epiceric.shopchest.sql.Database;
@@ -30,12 +31,17 @@ import org.bukkit.block.Block;
 import org.bukkit.block.BlockFace;
 import org.bukkit.block.Chest;
 import org.bukkit.enchantments.Enchantment;
+import org.bukkit.entity.ArmorStand;
+import org.bukkit.entity.Entity;
 import org.bukkit.entity.Player;
 import org.bukkit.event.EventHandler;
 import org.bukkit.event.EventPriority;
 import org.bukkit.event.Listener;
 import org.bukkit.event.block.Action;
+import org.bukkit.event.entity.EntityDamageByEntityEvent;
+import org.bukkit.event.player.PlayerInteractAtEntityEvent;
 import org.bukkit.event.player.PlayerInteractEvent;
+import org.bukkit.inventory.EquipmentSlot;
 import org.bukkit.inventory.Inventory;
 import org.bukkit.inventory.ItemStack;
 import org.bukkit.inventory.PlayerInventory;
@@ -122,8 +128,7 @@ public class ShopInteractListener implements Listener {
         }
     }
 
-    @EventHandler
+    private void handleInteractEvent(PlayerInteractEvent e, boolean calledFromInteractEvent) {
-    public void onPlayerInteract(PlayerInteractEvent e) {
         Block b = e.getClickedBlock();
         Player p = e.getPlayer();
 
@@ -176,24 +181,33 @@ public class ShopInteractListener implements Listener {
                     } else {
 
                         if (shopUtils.isShop(b.getLocation())) {
-                            e.setCancelled(true);
                             Shop shop = shopUtils.getShop(b.getLocation());
 
                             if (p.isSneaking()) {
+                                if (Utils.getPreferredItemInHand(p) == null) {
+                                    e.setCancelled(true);
                                     if (!shop.getVendor().getUniqueId().equals(p.getUniqueId())) {
                                         if (perm.has(p, "shopchest.openOther")) {
                                             String vendorName = (shop.getVendor().getName() == null ? shop.getVendor().getUniqueId().toString() : shop.getVendor().getName());
                                             p.sendMessage(LanguageUtils.getMessage(LocalizedMessage.Message.OPENED_SHOP, new LocalizedMessage.ReplacedRegex(Regex.VENDOR, vendorName)));
                                             plugin.debug(p.getName() + " is opening " + vendorName + "'s shop (#" + shop.getID() + ")");
                                             e.setCancelled(false);
+                                            if (!calledFromInteractEvent) {
+                                                p.openInventory(shop.getInventoryHolder().getInventory());
+                                            }
                                         } else {
                                             p.sendMessage(LanguageUtils.getMessage(LocalizedMessage.Message.NO_PERMISSION_OPEN_OTHERS));
                                             plugin.debug(p.getName() + " is not permitted to open another player's shop");
                                         }
                                     } else {
                                         e.setCancelled(false);
+                                        if (!calledFromInteractEvent) {
+                                            p.openInventory(shop.getInventoryHolder().getInventory());
+                                        }
+                                    }
                                 }
                             } else {
+                                e.setCancelled(true);
                                 if (shop.getShopType() == ShopType.ADMIN || !shop.getVendor().getUniqueId().equals(p.getUniqueId())) {
                                     plugin.debug(p.getName() + " wants to buy");
                                     if (shop.getBuyPrice() > 0) {
@@ -245,10 +259,12 @@ public class ShopInteractListener implements Listener {
                                     }
                                 } else {
                                     e.setCancelled(false);
+                                    if (!calledFromInteractEvent) {
+                                        p.openInventory(shop.getInventoryHolder().getInventory());
+                                    }
                                 }
                             }
                         }
-
                     }
 
 
@@ -309,7 +325,75 @@ public class ShopInteractListener implements Listener {
         } else {
             ClickType.removePlayerClickType(p);
         }
+    }
 
+
+    @EventHandler
+    public void onPlayerInteract(PlayerInteractEvent e) {
+        handleInteractEvent(e, true);
+    }
+
+    @EventHandler
+    public void onPlayerInteractAtEntity(PlayerInteractAtEntityEvent e) {
+        if (!plugin.getShopChestConfig().enable_hologram_interaction) return;
+
+        Entity entity = e.getRightClicked();
+        Player p = e.getPlayer();
+
+        if (e.getHand() == EquipmentSlot.HAND) {
+            if (entity instanceof ArmorStand) {
+                ArmorStand armorStand = (ArmorStand) entity;
+                if (Hologram.isPartOfHologram(armorStand)) {
+                    Hologram hologram = Hologram.getHologram(armorStand);
+                    if (hologram != null) {
+                        Block b = null;
+                        for (Shop shop : plugin.getShopUtils().getShops()) {
+                            if (shop.getHologram().equals(hologram)) {
+                                b = shop.getLocation().getBlock();
+                            }
+                        }
+
+                        if (b != null) {
+                            PlayerInteractEvent interactEvent = new PlayerInteractEvent(p, Action.RIGHT_CLICK_BLOCK, Utils.getPreferredItemInHand(p), b, null, EquipmentSlot.HAND);
+                            handleInteractEvent(interactEvent, false);
+                        }
+
+                    }
+                }
+            }
+        }
+    }
+
+    @EventHandler
+    public void onPlayerDamageEntity(EntityDamageByEntityEvent e) {
+        if (!plugin.getShopChestConfig().enable_hologram_interaction) return;
+
+        Entity entity = e.getEntity();
+        Entity damager = e.getDamager();
+
+        if (!(damager instanceof Player)) return;
+        Player p = (Player) damager;
+
+        if (entity instanceof ArmorStand) {
+            ArmorStand armorStand = (ArmorStand) entity;
+            if (Hologram.isPartOfHologram(armorStand)) {
+                Hologram hologram = Hologram.getHologram(armorStand);
+                if (hologram != null) {
+                    Block b = null;
+                    for (Shop shop : plugin.getShopUtils().getShops()) {
+                        if (shop.getHologram().equals(hologram)) {
+                            b = shop.getLocation().getBlock();
+                        }
+                    }
+
+                    if (b != null) {
+                        PlayerInteractEvent interactEvent = new PlayerInteractEvent(p, Action.LEFT_CLICK_BLOCK, Utils.getPreferredItemInHand(p), b, null, EquipmentSlot.HAND);
+                        handleInteractEvent(interactEvent, false);
+                    }
+
+                }
+            }
+        }
     }
 
     /**

src/main/java/de/epiceric/shopchest/nms/Hologram.java

@@ -3,19 +3,23 @@ package de.epiceric.shopchest.nms;
 import de.epiceric.shopchest.ShopChest;
 import de.epiceric.shopchest.utils.Utils;
 import org.bukkit.Location;
-import org.bukkit.entity.Entity;
+import org.bukkit.entity.ArmorStand;
 import org.bukkit.entity.Player;
 
 import java.lang.reflect.Constructor;
 import java.lang.reflect.InvocationTargetException;
+import java.lang.reflect.Method;
 import java.util.ArrayList;
 import java.util.List;
+import java.util.UUID;
 
 public class Hologram {
 
+    private static List<Hologram> holograms = new ArrayList<>();
+
     private boolean exists = false;
-    private int count;
     private List<Object> entityList = new ArrayList<>();
+    private List<UUID> entityUuidList = new ArrayList<>();
     private String[] text;
     private Location location;
     private List<Player> visible = new ArrayList<>();
@@ -25,6 +29,7 @@ public class Hologram {
     private Class<?> nmsWorldClass = Utils.getNMSClass("World");
     private Class<?> packetPlayOutSpawnEntityLivingClass = Utils.getNMSClass("PacketPlayOutSpawnEntityLiving");
     private Class<?> packetPlayOutEntityDestroyClass = Utils.getNMSClass("PacketPlayOutEntityDestroy");
+    private Class<?> entityClass = Utils.getNMSClass("Entity");
     private Class<?> entityLivingClass = Utils.getNMSClass("EntityLiving");
 
     public Hologram(ShopChest plugin, String[] text, Location location) {
@@ -33,8 +38,8 @@ public class Hologram {
         this.location = location;
 
         Class[] requiredClasses = new Class[] {
-                nmsWorldClass, entityArmorStandClass, entityLivingClass,
+                nmsWorldClass, entityArmorStandClass, entityLivingClass, entityClass,
-                packetPlayOutSpawnEntityLivingClass, packetPlayOutEntityDestroyClass,
+                packetPlayOutSpawnEntityLivingClass, packetPlayOutEntityDestroyClass
         };
 
         for (Class c : requiredClasses) {
@@ -48,19 +53,35 @@ public class Hologram {
     }
 
     private void create() {
-        for (String text : this.text) {
+        Location loc = location.clone();
-            if (text == null)
+
+        for (int i = 0; i <= text.length; i++) {
+            String text = null;
+
+            if (i != this.text.length) {
+                text = this.text[i];
+                if (text == null) continue;
+            } else {
+                if (!plugin.getShopChestConfig().enable_hologram_interaction) {
+                    loc = location.clone();
+                    loc.add(0, 1, 0);
+                } else {
                     continue;
+                }
+            }
 
             try {
-                Object craftWorld = this.location.getWorld().getClass().cast(this.location.getWorld());
+                Object craftWorld = loc.getWorld().getClass().cast(loc.getWorld());
-                Object nmsWorld = nmsWorldClass.cast(craftWorld.getClass().getMethod("getHandle").invoke(craftWorld));
+                Object nmsWorldServer = craftWorld.getClass().getMethod("getHandle").invoke(craftWorld);
 
                 Constructor entityArmorStandConstructor = entityArmorStandClass.getConstructor(nmsWorldClass, double.class, double.class, double.class);
-                Object entityArmorStand = entityArmorStandConstructor.newInstance(nmsWorld, this.location.getX(), this.location.getY(), this.getLocation().getZ());
+                Object entityArmorStand = entityArmorStandConstructor.newInstance(nmsWorldServer, loc.getX(), loc.getY(),loc.getZ());
 
+                if (text != null) {
                     entityArmorStandClass.getMethod("setCustomName", String.class).invoke(entityArmorStand, text);
                     entityArmorStandClass.getMethod("setCustomNameVisible", boolean.class).invoke(entityArmorStand, true);
+                }
+
                 entityArmorStandClass.getMethod("setInvisible", boolean.class).invoke(entityArmorStand, true);
 
                 if (Utils.getMajorVersion() < 10) {
@@ -69,9 +90,17 @@ public class Hologram {
                     entityArmorStandClass.getMethod("setNoGravity", boolean.class).invoke(entityArmorStand, true);
                 }
 
+                // Probably like an addEntity() method...
+                Method b = nmsWorldServer.getClass().getDeclaredMethod("b", entityClass);
+                b.setAccessible(true);
+                b.invoke(nmsWorldServer, entityArmorStand);
+
+                Object uuid = entityClass.getMethod("getUniqueID").invoke(entityArmorStand);
+
+                entityUuidList.add((UUID) uuid);
                 entityList.add(entityArmorStand);
-                this.location.subtract(0, 0.25, 0);
+
-                count++;
+                loc.subtract(0, 0.25, 0);
             } catch (NoSuchMethodException | IllegalAccessException | InvocationTargetException | InstantiationException e) {
                 plugin.getLogger().severe("Could not create Hologram with reflection");
                 plugin.debug("Could not create Hologram with reflection");
@@ -81,11 +110,7 @@ public class Hologram {
 
         }
 
-        for (int i = 0; i < count; i++) {
+        holograms.add(this);
-            this.location.add(0, 0.25, 0);
-        }
-
-        count = 0;
         exists = true;
     }
 
@@ -150,6 +175,14 @@ public class Hologram {
         return exists;
     }
 
+    /**
+     * @param armorStand Armor stand to check
+     * @return Whether the given armor stand is part of the hologram
+     */
+    public boolean contains(ArmorStand armorStand) {
+        return entityUuidList.contains(armorStand.getUniqueId());
+    }
+
     /**
      * Removes the hologram. <br>
      * IHologram will be hidden from all players and will be killed
@@ -165,6 +198,32 @@ public class Hologram {
             }
         }
         exists = false;
+        holograms.remove(this);
+    }
+
+    /**
+     * @param armorStand Armor stand that's part of a hologram
+     * @return Hologram, the armor stand is part of
+     */
+    public static Hologram getHologram(ArmorStand armorStand) {
+        for (Hologram hologram : holograms) {
+            if (hologram.contains(armorStand)) return hologram;
+        }
+
+        return null;
+    }
+
+    /**
+     * @param armorStand Armor stand to check
+     * @return Whether the armor stand is part of a hologram
+     */
+    public static boolean isPartOfHologram(ArmorStand armorStand) {
+        for (Hologram hologram : holograms) {
+            if (hologram.contains(armorStand)) {
+                return true;
+            }
+        }
+        return false;
     }
 
 }

src/main/resources/config.yml

@@ -14,6 +14,12 @@ language-file: "en_US"
 # Set whether the floating shop items on top of the chest should be shown
 show-shop-items: true
 
+# Set whether interaction with the hologram should be enabled.
+# If set to true, a player can do the exact same thing with the
+# hologram, as with the chest. You can even open the chest if you
+# are the vendor or have permission.
+enable-hologram-interaction: true
+
 # Set whether a debug log file should be created.
 # The file may get large! Please enable this setting when reporting bugs.
 enable-debug-log: false