src/de/steamwar/misslewars/Config.java

@@ -48,6 +48,8 @@ public class Config {
 	public static final int ShieldFlyTime;
 	public static final int EndTime;
 
+	public static final double MissileChance;
+
 	static {
 		File configfile = new File(Bukkit.getWorlds().get(0).getWorldFolder(), "config.yml");
 		if (!configfile.exists()) {
@@ -62,6 +64,8 @@ public class Config {
 		ShieldFlyTime = config.getInt("ShieldFlyTime");
 		EndTime = config.getInt("EndTime");
 
+		MissileChance = config.getDouble("MissileChance");
+
 		ConfigurationSection arena = config.getConfigurationSection("Arena");
 		assert arena != null;
 		ArenaMinX = arena.getInt("MinX");

src/de/steamwar/misslewars/items/Missile.java

@@ -148,6 +148,11 @@ public class Missile extends SpecialItem {
 		return true;
 	}
 
+	@Override
+	public boolean isMissile() {
+		return true;
+	}
+
 	public static void init() {
 		File missileFolder = new File(MissileWars.getPlugin().getDataFolder(), "missiles");
 		if (!missileFolder.exists() || !missileFolder.canRead() || !missileFolder.isDirectory()) {

src/de/steamwar/misslewars/items/SpecialItem.java

@@ -19,6 +19,7 @@
 
 package de.steamwar.misslewars.items;
 
+import de.steamwar.misslewars.Config;
 import org.bukkit.Material;
 import org.bukkit.enchantments.Enchantment;
 import org.bukkit.entity.Player;
@@ -26,20 +27,30 @@ import org.bukkit.inventory.ItemFlag;
 import org.bukkit.inventory.ItemStack;
 import org.bukkit.inventory.meta.ItemMeta;
 
-import java.util.*;
+import java.util.ArrayList;
+import java.util.List;
+import java.util.Random;
 
 public abstract class SpecialItem {
 
 	private static final Random random = new Random();
 
-	private static List<SpecialItem> items = new ArrayList<>();
+	private static List<SpecialItem> supportItems = new ArrayList<>();
+	private static List<SpecialItem> missileItems = new ArrayList<>();
 
 	SpecialItem() {
-		items.add(this);
+		if (this.isMissile()) {
+			missileItems.add(this);
+		} else {
+			supportItems.add(this);
+		}
 	}
 
 	public abstract ItemStack getItem();
 	public abstract boolean handleUse(Player p);
+	public boolean isMissile() {
+		return false;
+	}
 
 	public ItemStack createItem(Material material, String name, int amount) {
 		return createItem(material, name, amount, new ArrayList<>());
@@ -57,15 +68,22 @@ public abstract class SpecialItem {
 	}
 
 	public static boolean handleUse(ItemStack item, Player player) {
-		for(SpecialItem specialItem : items){
-			if(item.isSimilar(specialItem.getItem())){
-				return specialItem.handleUse(player);
+		return handleUse(item, player, missileItems) || handleUse(item, player, supportItems);
 	}
+
+	private static boolean handleUse(ItemStack item, Player player, List<SpecialItem> items) {
+		for (SpecialItem specialItem : items) {
+			if (item.isSimilar(specialItem.getItem())) return specialItem.handleUse(player);
 		}
 		return false;
 	}
 
 	public static ItemStack getRandomItem() {
-		return items.get(random.nextInt(items.size())).getItem();
+		if (random.nextDouble() > Config.MissileChance) {
+			return supportItems.get(random.nextInt(supportItems.size())).getItem();
+		} else {
+			return missileItems.get(random.nextInt(missileItems.size())).getItem();
 		}
 	}
+
+}