Holographic Displays integration; resolves #4

pom.xml

@@ -105,6 +105,11 @@
             <version>2.0.18-SNAPSHOT</version>
             <scope>provided</scope>
         </dependency>
+        <dependency>
+            <groupId>com.gmail.filoghost</groupId>
+            <artifactId>holographicdisplaysapi</artifactId>
+            <version>2.1.7</version>
+        </dependency>
     </dependencies>
     <repositories>
         <repository>

src/main/java/io/github/dre2n/dungeonsxl/sign/DSignTypeDefault.java

@@ -33,6 +33,7 @@ public enum DSignTypeDefault implements DSignType {
     END("End", "end", false, EndSign.class),
     EXTERNAL_MOB("ExternalMob", "mob", false, ExternalMobSign.class),
     FLOOR("Floor", "floor", false, FloorSign.class),
+    HOLOGRAM("Hologram", "hologram", true, HologramSign.class),
     INTERACT("Interact", "interact", true, InteractSign.class),
     LEAVE("Leave", "leave", true, LeaveSign.class),
     LIVES_MODIFIER("Lives", "lives", false, LivesModifierSign.class),

src/main/java/io/github/dre2n/dungeonsxl/sign/HologramSign.java

@@ -0,0 +1,88 @@
+/*
+ * Copyright (C) 2012-2016 Frank Baumann
+ *
+ * This program is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program.  If not, see <http://www.gnu.org/licenses/>.
+ */
+package io.github.dre2n.dungeonsxl.sign;
+
+import com.gmail.filoghost.holographicdisplays.api.Hologram;
+import com.gmail.filoghost.holographicdisplays.api.HologramsAPI;
+import io.github.dre2n.commons.compatibility.CompatibilityHandler;
+import io.github.dre2n.commons.compatibility.Version;
+import io.github.dre2n.commons.util.EnumUtil;
+import io.github.dre2n.dungeonsxl.world.GameWorld;
+import io.github.dre2n.itemsxl.util.commons.util.NumberUtil;
+import org.bukkit.ChatColor;
+import org.bukkit.Location;
+import org.bukkit.Material;
+import org.bukkit.block.Sign;
+import org.bukkit.inventory.ItemStack;
+
+/**
+ * @author Daniel Saukel
+ */
+public class HologramSign extends DSign {
+
+    private DSignType type = DSignTypeDefault.HOLOGRAM;
+
+    private Hologram hologram;
+
+    public HologramSign(Sign sign, String[] lines, GameWorld gameWorld) {
+        super(sign, lines, gameWorld);
+    }
+
+    @Override
+    public boolean check() {
+        return true;
+    }
+
+    @Override
+    @SuppressWarnings("deprecation")
+    public void onInit() {
+        getSign().setType(Material.AIR);
+
+        String[] holoLines = lines[1].split("/");
+        Location location = getSign().getLocation();
+        location = location.add(0, NumberUtil.parseDouble(lines[2]), 0);
+
+        hologram = HologramsAPI.createHologram(plugin, location);
+        for (String line : holoLines) {
+            if (line.startsWith("Item:")) {
+                String id = line.replace("Item:", "");
+                ItemStack item;
+
+                if (Version.andHigher(Version.MC1_9).contains(CompatibilityHandler.getInstance().getVersion())) {
+                    item = plugin.getCaliburnAPI().getItems().getById(id).toItemStack(1);
+
+                } else if (EnumUtil.isValidEnum(Material.class, id)) {
+                    item = new ItemStack(Material.valueOf(id));
+
+                } else {
+                    item = new ItemStack(NumberUtil.parseInt(id));
+                }
+
+                hologram.appendItemLine(item);
+
+            } else {
+                hologram.appendTextLine(ChatColor.translateAlternateColorCodes('&', line));
+            }
+        }
+    }
+
+    @Override
+    public DSignType getType() {
+        return type;
+    }
+
+}