Fixed potential NPEs and added @Nonnull and @Nullable annotations

src/main/java/exopandora/worldhandler/builder/CommandBuilder.java

@@ -5,6 +5,7 @@ import java.util.List;
 import java.util.Map.Entry;
 import java.util.stream.Collectors;
 
+import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
 
 import exopandora.worldhandler.WorldHandler;
@@ -191,11 +192,13 @@ public abstract class CommandBuilder implements ICommandBuilderSyntax
 		return this.get(index, ArgumentType.LONG);
 	}
 	
+	@Nonnull
 	protected CoordinateInt getNodeAsCoordinateInt(int index)
 	{
 		return this.get(index, ArgumentType.COORDINATE_INT);
 	}
 	
+	@Nonnull
 	protected CoordinateDouble getNodeAsCoordinateDouble(int index)
 	{
 		return this.get(index, ArgumentType.COORDINATE_DOUBLE);
@@ -207,6 +210,7 @@ public abstract class CommandBuilder implements ICommandBuilderSyntax
 		return this.get(index, ArgumentType.RESOURCE_LOCATION);
 	}
 	
+	@Nonnull
 	protected TargetSelector getNodeAsTargetSelector(int index)
 	{
 		return this.get(index, ArgumentType.TARGET_SELECTOR);

src/main/java/exopandora/worldhandler/builder/CommandBuilderNBT.java

@@ -3,6 +3,8 @@ package exopandora.worldhandler.builder;
 import java.util.ArrayList;
 import java.util.List;
 
+import javax.annotation.Nullable;
+
 import exopandora.worldhandler.builder.component.IBuilderComponent;
 import exopandora.worldhandler.util.NBTHelper;
 import net.minecraft.nbt.CompoundNBT;
@@ -46,6 +48,7 @@ public abstract class CommandBuilderNBT extends CommandBuilder implements IComma
 		return super.toActualCommand();
 	}
 	
+	@Nullable
 	protected CompoundNBT buildNBT()
 	{
 		CompoundNBT nbt = new CompoundNBT();

src/main/java/exopandora/worldhandler/builder/component/impl/ComponentEnchantment.java

@@ -5,6 +5,7 @@ import java.util.Map;
 import java.util.Map.Entry;
 import java.util.Set;
 
+import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
 
 import exopandora.worldhandler.builder.component.IBuilderComponent;

src/main/java/exopandora/worldhandler/builder/impl/BuilderAdvancement.java

@@ -77,7 +77,7 @@ public class BuilderAdvancement extends CommandBuilder
 	
 	public BuilderAdvancement getBuilder(EnumActionType action, EnumMode mode)
 	{
-		return new BuilderAdvancement(action, this.getPlayer(), mode, (mode != null && !mode.equals(EnumMode.EVERYTHING)) ? this.getAdvancement() : null);
+		return new BuilderAdvancement(action, this.getPlayer(), mode, !EnumMode.EVERYTHING.equals(mode) ? this.getAdvancement() : null);
 	}
 	
 	@Override

src/main/java/exopandora/worldhandler/builder/impl/BuilderClone.java

@@ -1,5 +1,6 @@
 package exopandora.worldhandler.builder.impl;
 
+import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
 
 import exopandora.worldhandler.builder.CommandSyntax;
@@ -59,16 +60,19 @@ public class BuilderClone extends BuilderDoubleBlockPos
 		this.setNode(8, z);
 	}
 	
+	@Nonnull
 	public CoordinateInt getXCoordiante()
 	{
 		return this.getNodeAsCoordinateInt(6);
 	}
 	
+	@Nonnull
 	public CoordinateInt getYCoordiante()
 	{
 		return this.getNodeAsCoordinateInt(7);
 	}
 	
+	@Nonnull
 	public CoordinateInt getZCoordiante()
 	{
 		return this.getNodeAsCoordinateInt(8);
@@ -99,6 +103,7 @@ public class BuilderClone extends BuilderDoubleBlockPos
 		this.setNode(9, mask != null ? mask.toString() : null);
 	}
 	
+	@Nullable
 	public EnumMask getMask()
 	{
 		return EnumHelper.valueOf(this.getNodeAsString(9), EnumMask.class);

src/main/java/exopandora/worldhandler/builder/impl/BuilderData.java

@@ -4,10 +4,10 @@ import javax.annotation.Nonnull;
 import javax.annotation.Nullable;
 
 import exopandora.worldhandler.builder.CommandSyntax;
+import exopandora.worldhandler.builder.types.ArgumentType;
 import exopandora.worldhandler.builder.types.CoordinateInt;
 import exopandora.worldhandler.builder.types.TargetSelector;
 import exopandora.worldhandler.util.EnumHelper;
-import exopandora.worldhandler.builder.types.ArgumentType;
 import net.minecraft.nbt.CompoundNBT;
 import net.minecraft.util.ResourceLocation;
 import net.minecraft.util.math.BlockPos;
@@ -57,6 +57,7 @@ public class BuilderData extends BuilderBlockPos
 		}
 	}
 	
+	@Nullable
 	public EnumMode getMode()
 	{
 		return EnumHelper.valueOf(this.getNodeAsString(0), EnumMode.class);
@@ -79,6 +80,7 @@ public class BuilderData extends BuilderBlockPos
 		}
 	}
 	
+	@Nullable
 	public EnumTarget getTarget()
 	{
 		return EnumHelper.valueOf(this.getNodeAsString(1), EnumTarget.class);
@@ -254,6 +256,7 @@ public class BuilderData extends BuilderBlockPos
 	}
 	
 	@Override
+	@Nonnull
 	public CoordinateInt getXCoordinate()
 	{
 		this.ensureTarget(EnumTarget.BLOCK);
@@ -261,6 +264,7 @@ public class BuilderData extends BuilderBlockPos
 	}
 	
 	@Override
+	@Nonnull
 	public CoordinateInt getYCoordinate()
 	{
 		this.ensureTarget(EnumTarget.BLOCK);
@@ -268,6 +272,7 @@ public class BuilderData extends BuilderBlockPos
 	}
 	
 	@Override
+	@Nonnull
 	public CoordinateInt getZCoordinate()
 	{
 		this.ensureTarget(EnumTarget.BLOCK);
@@ -275,6 +280,7 @@ public class BuilderData extends BuilderBlockPos
 	}
 	
 	@Override
+	@Nonnull
 	public BlockPos getBlockPos()
 	{
 		this.ensureTarget(EnumTarget.BLOCK);

src/main/java/exopandora/worldhandler/builder/impl/BuilderDoubleBlockPos.java

@@ -1,5 +1,7 @@
 package exopandora.worldhandler.builder.impl;
 
+import javax.annotation.Nonnull;
+
 import exopandora.worldhandler.builder.CommandBuilder;
 import exopandora.worldhandler.builder.types.CoordinateInt;
 import exopandora.worldhandler.util.BlockHelper;
@@ -53,16 +55,19 @@ public abstract class BuilderDoubleBlockPos extends CommandBuilder
 		this.setNode(2, z);
 	}
 	
+	@Nonnull
 	public CoordinateInt getX1Coordiante()
 	{
 		return this.getNodeAsCoordinateInt(0);
 	}
 	
+	@Nonnull
 	public CoordinateInt getY1Coordiante()
 	{
 		return this.getNodeAsCoordinateInt(1);
 	}
 	
+	@Nonnull
 	public CoordinateInt getZ1Coordiante()
 	{
 		return this.getNodeAsCoordinateInt(2);
@@ -125,16 +130,19 @@ public abstract class BuilderDoubleBlockPos extends CommandBuilder
 		this.setNode(5, z);
 	}
 	
+	@Nonnull
 	public CoordinateInt getX2Coordiante()
 	{
 		return this.getNodeAsCoordinateInt(3);
 	}
 	
+	@Nonnull
 	public CoordinateInt getY2Coordiante()
 	{
 		return this.getNodeAsCoordinateInt(4);
 	}
 	
+	@Nonnull
 	public CoordinateInt getZ2Coordiante()
 	{
 		return this.getNodeAsCoordinateInt(5);

src/main/java/exopandora/worldhandler/builder/impl/BuilderEnchantment.java

@@ -1,5 +1,7 @@
 package exopandora.worldhandler.builder.impl;
 
+import javax.annotation.Nullable;
+
 import exopandora.worldhandler.builder.CommandBuilder;
 import exopandora.worldhandler.builder.CommandSyntax;
 import exopandora.worldhandler.builder.types.ArgumentType;
@@ -11,9 +13,10 @@ import net.minecraftforge.api.distmarker.OnlyIn;
 @OnlyIn(Dist.CLIENT)
 public class BuilderEnchantment extends CommandBuilder
 {
-	public void getPlayer(String player)
+	@Nullable
+	public String getPlayer()
 	{
-		this.getNodeAsString(0);
+		return this.getNodeAsString(0);
 	}
 	
 	public void setPlayer(String player)
@@ -21,6 +24,7 @@ public class BuilderEnchantment extends CommandBuilder
 		this.setNode(0, player);
 	}
 	
+	@Nullable
 	public ResourceLocation getEnchantment()
 	{
 		return this.getNodeAsResourceLocation(1);

src/main/java/exopandora/worldhandler/builder/impl/BuilderExecute.java

@@ -28,6 +28,7 @@ public class BuilderExecute extends CommandBuilder
 		this.setNode(1, target);
 	}
 	
+	@Nullable
 	public String getTarget()
 	{
 		return this.getNodeAsString(1);
@@ -56,6 +57,7 @@ public class BuilderExecute extends CommandBuilder
 		}
 	}
 	
+	@Nullable
 	public String getCommand()
 	{
 		return this.getNodeAsString(3);

src/main/java/exopandora/worldhandler/builder/impl/BuilderExperience.java

@@ -41,6 +41,7 @@ public class BuilderExperience extends CommandBuilder
 		this.setNode(1, player);
 	}
 	
+	@Nullable
 	public String getPlayer()
 	{
 		return this.getNodeAsString(1);
@@ -51,6 +52,7 @@ public class BuilderExperience extends CommandBuilder
 		this.setNode(2, level);
 	}
 	
+	@Nullable
 	public int getLevel()
 	{
 		return this.getNodeAsInt(2);

src/main/java/exopandora/worldhandler/builder/impl/BuilderGamemode.java

@@ -11,7 +11,7 @@ public class BuilderGamemode extends CommandBuilder
 {
 	public BuilderGamemode()
 	{
-		
+		super();
 	}
 	
 	public BuilderGamemode(EnumGamemode mode)

src/main/java/exopandora/worldhandler/builder/impl/BuilderGive.java

@@ -35,6 +35,7 @@ public class BuilderGive extends CommandBuilderNBT
 		this.setNode(0, username);
 	}
 	
+	@Nullable
 	public String getPlayer()
 	{
 		return this.getNodeAsString(0);
@@ -74,9 +75,17 @@ public class BuilderGive extends CommandBuilderNBT
 		this.setNode(1, this.itemResourceLocation);
 	}
 	
+	@Nullable
 	public CompoundNBT getNBT()
 	{
-		return this.getNodeAsItemResourceLocation(1).getNBT();
+		ItemResourceLocation item = this.getItem();
+		
+		if(item != null)
+		{
+			return item.getNBT();
+		}
+		
+		return null;
 	}
 	
 	@Override

src/main/java/exopandora/worldhandler/builder/impl/BuilderPlayer.java

@@ -1,5 +1,7 @@
 package exopandora.worldhandler.builder.impl;
 
+import javax.annotation.Nullable;
+
 import exopandora.worldhandler.builder.CommandBuilder;
 import exopandora.worldhandler.builder.CommandSyntax;
 import exopandora.worldhandler.builder.types.ArgumentType;
@@ -21,6 +23,7 @@ public class BuilderPlayer extends CommandBuilder
 		this.setNode(0, player);
 	}
 	
+	@Nullable
 	public String getPlayer()
 	{
 		return this.getNodeAsString(0);

src/main/java/exopandora/worldhandler/builder/impl/BuilderPlayerReason.java

@@ -1,5 +1,7 @@
 package exopandora.worldhandler.builder.impl;
 
+import javax.annotation.Nullable;
+
 import exopandora.worldhandler.builder.CommandBuilder;
 import exopandora.worldhandler.builder.CommandSyntax;
 import exopandora.worldhandler.builder.types.ArgumentType;
@@ -21,6 +23,7 @@ public class BuilderPlayerReason extends CommandBuilder
 		this.setNode(0, player);
 	}
 	
+	@Nullable
 	public String getPlayer()
 	{
 		return this.getNodeAsString(0);
@@ -31,6 +34,7 @@ public class BuilderPlayerReason extends CommandBuilder
 		this.setNode(1, reason);
 	}
 	
+	@Nullable
 	public String getReason()
 	{
 		return this.getNodeAsString(1);

src/main/java/exopandora/worldhandler/builder/impl/BuilderPotionEffect.java

@@ -52,6 +52,7 @@ public class BuilderPotionEffect extends CommandBuilder
 		this.setNode(1, player);
 	}
 	
+	@Nullable
 	public String getPlayer()
 	{
 		return this.getNodeAsString(1);
@@ -80,6 +81,7 @@ public class BuilderPotionEffect extends CommandBuilder
 		return null;
 	}
 	
+	@Nullable
 	public ResourceLocation getEffect()
 	{
 		return this.getNodeAsResourceLocation(2);

src/main/java/exopandora/worldhandler/builder/impl/BuilderScoreboardObjectives.java

@@ -37,6 +37,7 @@ public class BuilderScoreboardObjectives extends BuilderScoreboard
 		this.init();
 	}
 	
+	@Nullable
 	public EnumMode getMode()
 	{
 		return EnumHelper.valueOf(this.getNodeAsString(1), EnumMode.class);

src/main/java/exopandora/worldhandler/builder/impl/BuilderScoreboardPlayers.java

@@ -1,7 +1,12 @@
 package exopandora.worldhandler.builder.impl;
 
+import javax.annotation.Nullable;
+
+import org.apache.commons.lang3.RegExUtils;
+
 import exopandora.worldhandler.builder.CommandSyntax;
 import exopandora.worldhandler.builder.types.ArgumentType;
+import exopandora.worldhandler.util.EnumHelper;
 import net.minecraftforge.api.distmarker.Dist;
 import net.minecraftforge.api.distmarker.OnlyIn;
 
@@ -18,9 +23,10 @@ public class BuilderScoreboardPlayers extends BuilderScoreboard
 		this.setNode(0, "players");
 	}
 	
-	public String getMode()
+	@Nullable
+	public EnumMode getMode()
 	{
-		return this.getNodeAsString(1);
+		return EnumHelper.valueOf(this.getNodeAsString(1), EnumMode.class);
 	}
 	
 	public void setMode(String mode)
@@ -47,6 +53,7 @@ public class BuilderScoreboardPlayers extends BuilderScoreboard
 		this.setNode(2, player);
 	}
 	
+	@Nullable
 	public String getPlayer()
 	{
 		return this.getNodeAsString(2);
@@ -54,20 +61,16 @@ public class BuilderScoreboardPlayers extends BuilderScoreboard
 	
 	public void setObjective(String name)
 	{
-		String mode = this.getMode();
+		if(this.getMode() != null)
-		String objective = name != null ? name.replaceAll(" ", "_") : null;
-		
-		if(mode != null)
 		{
-			this.setNode(3, objective);
+			this.setNode(3, RegExUtils.replaceAll(name, " ", "_"));
 		}
 	}
 	
+	@Nullable
 	public String getObjective()
 	{
-		String mode = this.getMode();
+		if(this.getMode() != null)
-		
-		if(mode != null)
 		{
 			return this.getNodeAsString(3);
 		}
@@ -82,7 +85,7 @@ public class BuilderScoreboardPlayers extends BuilderScoreboard
 	
 	public int getPoints()
 	{
-		if(this.getMode() != null && !this.getMode().equals("enable"))
+		if(!EnumMode.ENABLE.equals(this.getMode()))
 		{
 			return this.getNodeAsInt(4);
 		}
@@ -111,7 +114,6 @@ public class BuilderScoreboardPlayers extends BuilderScoreboard
 		syntax.addRequired("score", ArgumentType.INT, 0);
 		
 		return syntax;
-		
 	}
 	
 	public BuilderScoreboardPlayers getBuilderForPoints(EnumMode mode)

src/main/java/exopandora/worldhandler/builder/impl/BuilderSummon.java

@@ -472,6 +472,11 @@ public class BuilderSummon extends CommandBuilderNBT
 	{
 		String name = ResourceHelper.stripToResourceLocation(entityName);
 		
+		if(name == null || name.isEmpty())
+		{
+			return null;
+		}
+		
 		for(EntityType<?> type : ForgeRegistries.ENTITIES.getValues())
 		{
 			if(type.isSummonable() && entityName.equalsIgnoreCase(I18n.format(type.getTranslationKey())))
@@ -482,116 +487,111 @@ public class BuilderSummon extends CommandBuilderNBT
 		
 		String entity = name.replaceAll("_", "");
 		
-		if(entity.equalsIgnoreCase("RedCow"))
+		if("RedCow".equalsIgnoreCase(entity))
 		{
 			return EntityType.MOOSHROOM.getRegistryName();
 		}
-		else if(entity.equalsIgnoreCase("ChickenJockey"))
+		else if("ChickenJockey".equalsIgnoreCase(entity))
 		{
 			return EntityType.CHICKEN.getRegistryName();
 		}
-		else if(entity.equalsIgnoreCase("Pigman") || entity.equalsIgnoreCase("ZombiePig") || entity.equalsIgnoreCase("ZombiePigman"))
+		else if("Pigman".equalsIgnoreCase(entity) || "ZombiePig".equalsIgnoreCase(entity) || "ZombiePigman".equalsIgnoreCase(entity))
 		{
 			return EntityType.PIGLIN.getRegistryName();
 		}
-		else if(entity.equalsIgnoreCase("Wither"))
+		else if("Wither".equalsIgnoreCase(entity))
 		{
 			return EntityType.WITHER.getRegistryName();
 		}
-		else if(entity.equalsIgnoreCase("Dog"))
+		else if("Dog".equalsIgnoreCase(entity))
 		{
 			return EntityType.WOLF.getRegistryName();
 		}
-		else if(entity.equalsIgnoreCase("Dragon"))
+		else if("Dragon".equalsIgnoreCase(entity))
 		{
 			return EntityType.ENDER_DRAGON.getRegistryName();
 		}
-		else if(entity.equalsIgnoreCase("SnowMan"))
+		else if("SnowMan".equalsIgnoreCase(entity))
 		{
 			return EntityType.SNOW_GOLEM.getRegistryName();
 		}
-		else if(entity.equalsIgnoreCase("Horse") || entity.equalsIgnoreCase("ZombieHorse") || entity.equalsIgnoreCase("SkeletonHorse"))
+		else if("Horse".equalsIgnoreCase(entity) || "ZombieHorse".equalsIgnoreCase(entity) || "SkeletonHorse".equalsIgnoreCase(entity))
 		{
 			return EntityType.HORSE.getRegistryName();
 		}
-		else if(entity.equalsIgnoreCase("LavaCube")|| entity.equalsIgnoreCase("MagmaSlime") || entity.equalsIgnoreCase("MagmaCube"))
+		else if("LavaCube".equalsIgnoreCase(entity)|| "MagmaSlime".equalsIgnoreCase(entity) || "MagmaCube".equalsIgnoreCase(entity))
 		{
 			return EntityType.MAGMA_CUBE.getRegistryName();
 		}
-		else if(entity.equalsIgnoreCase("SpiderJockey"))
+		else if("SpiderJockey".equalsIgnoreCase(entity))
 		{
 			return EntityType.SPIDER.getRegistryName();
 		}
-		else if(entity.equalsIgnoreCase("IronGolem"))
+		else if("IronGolem".equalsIgnoreCase(entity))
 		{
 			return EntityType.IRON_GOLEM.getRegistryName();
 		}
-		else if(entity.equalsIgnoreCase("Ozelot") || entity.equals("Ocelot"))
+		else if("Ozelot".equalsIgnoreCase(entity) || entity.equals("Ocelot"))
 		{
 			return EntityType.OCELOT.getRegistryName();
 		}
-		else if(entity.equalsIgnoreCase("Kitty") || entity.equalsIgnoreCase("Kitten"))
+		else if("Kitty".equalsIgnoreCase(entity) || "Kitten".equalsIgnoreCase(entity))
 		{
 			return EntityType.CAT.getRegistryName();
 		}
-		else if(entity.equalsIgnoreCase("TESTIFICATE") || entity.equalsIgnoreCase("Blacksmith") || entity.equalsIgnoreCase("Farmer") || entity.equalsIgnoreCase("Fisherman") || entity.equalsIgnoreCase("Shepherd") || entity.equalsIgnoreCase("Fletcher") || entity.equalsIgnoreCase("Librarian") || entity.equalsIgnoreCase("Cleric") || entity.equalsIgnoreCase("Priest") || entity.equalsIgnoreCase("Armorer") || entity.equalsIgnoreCase("WeaponSmith") || entity.equalsIgnoreCase("ToolSmith") || entity.equalsIgnoreCase("Butcher") || entity.equalsIgnoreCase("Leatherworker") || entity.equalsIgnoreCase("Carthographer") || entity.equalsIgnoreCase("Nitwit"))
+		else if("TESTIFICATE".equalsIgnoreCase(entity) || "Blacksmith".equalsIgnoreCase(entity) || "Farmer".equalsIgnoreCase(entity) || "Fisherman".equalsIgnoreCase(entity) || "Shepherd".equalsIgnoreCase(entity) || "Fletcher".equalsIgnoreCase(entity) || "Librarian".equalsIgnoreCase(entity) || "Cleric".equalsIgnoreCase(entity) || "Priest".equalsIgnoreCase(entity) || "Armorer".equalsIgnoreCase(entity) || "WeaponSmith".equalsIgnoreCase(entity) || "ToolSmith".equalsIgnoreCase(entity) || "Butcher".equalsIgnoreCase(entity) || "Leatherworker".equalsIgnoreCase(entity) || "Carthographer".equalsIgnoreCase(entity) || "Nitwit".equalsIgnoreCase(entity))
 		{
 			return EntityType.VILLAGER.getRegistryName();
 		}
-		else if(entity.equalsIgnoreCase("Octopus") || entity.equalsIgnoreCase("Kraken"))
+		else if("Octopus".equalsIgnoreCase(entity) || "Kraken".equalsIgnoreCase(entity))
 		{
 			return EntityType.SQUID.getRegistryName();
 		}
-		else if(entity.equalsIgnoreCase("Exwife"))
+		else if("Exwife".equalsIgnoreCase(entity))
 		{
 			return EntityType.GHAST.getRegistryName();
 		}
-		else if(entity.equalsIgnoreCase("TNTMinecart"))
+		else if("TNTMinecart".equalsIgnoreCase(entity))
 		{
 			return EntityType.TNT_MINECART.getRegistryName();
 		}
-		else if(entity.equalsIgnoreCase("Minecart"))
+		else if("Minecart".equalsIgnoreCase(entity))
 		{
 			return EntityType.MINECART.getRegistryName();
 		}
-		else if(entity.equalsIgnoreCase("HopperMinecart"))
+		else if("HopperMinecart".equalsIgnoreCase(entity))
 		{
 			return EntityType.HOPPER_MINECART.getRegistryName();
 		}
-		else if(entity.equalsIgnoreCase("ChestMinecart"))
+		else if("ChestMinecart".equalsIgnoreCase(entity))
 		{
 			return EntityType.CHEST_MINECART.getRegistryName();
 		}
-		else if(entity.equalsIgnoreCase("SpawnerMinecart"))
+		else if("SpawnerMinecart".equalsIgnoreCase(entity))
 		{
 			return EntityType.SPAWNER_MINECART.getRegistryName();
 		}
-		else if(entity.equalsIgnoreCase("FurnaceMinecart"))
+		else if("FurnaceMinecart".equalsIgnoreCase(entity))
 		{
 			return EntityType.FURNACE_MINECART.getRegistryName();
 		}
-		else if(entity.equalsIgnoreCase("CommandBlockMinecart") || entity.equalsIgnoreCase("MinecartCommand") || entity.equalsIgnoreCase("CommandMinecart"))
+		else if("CommandBlockMinecart".equalsIgnoreCase(entity) || "MinecartCommand".equalsIgnoreCase(entity) || "CommandMinecart".equalsIgnoreCase(entity))
 		{
 			return EntityType.COMMAND_BLOCK_MINECART.getRegistryName();
 		}
-		else if(entity.equalsIgnoreCase("Wizard"))
+		else if("Wizard".equalsIgnoreCase(entity))
 		{
 			return EntityType.EVOKER.getRegistryName();
 		}
-		else if(entity.equalsIgnoreCase("Johnny"))
+		else if("Johnny".equalsIgnoreCase(entity))
 		{
 			return EntityType.VINDICATOR.getRegistryName();
 		}
-		else if(entity.equalsIgnoreCase("BabyZombie"))
+		else if("BabyZombie".equalsIgnoreCase(entity))
 		{
 			return EntityType.ZOMBIE.getRegistryName();
 		}
 		
-		if(entity == null || entity.isEmpty())
-		{
-			return null;
-		}
-		
 		return ResourceHelper.stringToResourceLocation(name);
 	}
 }

src/main/java/exopandora/worldhandler/builder/impl/BuilderTag.java

@@ -1,5 +1,7 @@
 package exopandora.worldhandler.builder.impl;
 
+import javax.annotation.Nullable;
+
 import exopandora.worldhandler.builder.CommandBuilder;
 import exopandora.worldhandler.builder.CommandSyntax;
 import exopandora.worldhandler.builder.types.ArgumentType;
@@ -11,7 +13,7 @@ public class BuilderTag extends CommandBuilder
 {
 	public BuilderTag()
 	{
-		
+		super();
 	}
 	
 	public BuilderTag(String player, EnumMode mode, String name)
@@ -26,6 +28,7 @@ public class BuilderTag extends CommandBuilder
 		this.setNode(0, player);
 	}
 	
+	@Nullable
 	public String getPlayer()
 	{
 		return this.getNodeAsString(0);
@@ -44,6 +47,7 @@ public class BuilderTag extends CommandBuilder
 		this.setNode(2, name);
 	}
 	
+	@Nullable
 	public String getName()
 	{
 		return this.getNodeAsString(2);

src/main/java/exopandora/worldhandler/builder/impl/BuilderTrigger.java

@@ -1,5 +1,7 @@
 package exopandora.worldhandler.builder.impl;
 
+import javax.annotation.Nullable;
+
 import exopandora.worldhandler.builder.CommandBuilder;
 import exopandora.worldhandler.builder.CommandSyntax;
 import exopandora.worldhandler.builder.types.ArgumentType;
@@ -27,6 +29,7 @@ public class BuilderTrigger extends CommandBuilder
 		this.setNode(0, name != null ? name.replaceAll(" ", "_") : null);
 	}
 	
+	@Nullable
 	public String getObjective()
 	{
 		return this.getNodeAsString(0);
@@ -40,6 +43,7 @@ public class BuilderTrigger extends CommandBuilder
 		}
 	}
 	
+	@Nullable
 	public EnumMode getMode()
 	{
 		return EnumHelper.valueOf(this.getNodeAsString(1), EnumMode.class);

src/main/java/exopandora/worldhandler/builder/impl/BuilderUsercontent.java

@@ -1,5 +1,7 @@
 package exopandora.worldhandler.builder.impl;
 
+import javax.annotation.Nullable;
+
 import exopandora.worldhandler.builder.CommandBuilder;
 import exopandora.worldhandler.builder.CommandSyntax;
 import exopandora.worldhandler.builder.CommandSyntax.Argument;
@@ -91,6 +93,7 @@ public class BuilderUsercontent extends CommandBuilder
 		}
 	}
 	
+	@Nullable
 	public String get(int index)
 	{
 		if(index < this.syntax.getArguments().size() && index >= 0)

src/main/java/exopandora/worldhandler/builder/impl/BuilderWeather.java

@@ -11,7 +11,7 @@ public class BuilderWeather extends CommandBuilder
 {
 	public BuilderWeather()
 	{
-		
+		super();
 	}
 	
 	public BuilderWeather(EnumWeather weather)

src/main/java/exopandora/worldhandler/builder/impl/BuilderWhitelist.java

@@ -13,7 +13,7 @@ public class BuilderWhitelist extends CommandBuilder
 {
 	public BuilderWhitelist()
 	{
-		
+		super();
 	}
 	
 	public BuilderWhitelist(EnumMode mode)
@@ -37,6 +37,7 @@ public class BuilderWhitelist extends CommandBuilder
 		this.setNode(1, player);
 	}
 	
+	@Nullable
 	public String getPlayer()
 	{
 		return this.getNodeAsString(1);

src/main/java/exopandora/worldhandler/builder/types/ArgumentType.java

@@ -48,7 +48,6 @@ public enum ArgumentType
 		return (T) this.parser.apply(object);
 	}
 	
-	@Nonnull
 	public <T> T parseOfDefault(String object, T def)
 	{
 		try

src/main/java/exopandora/worldhandler/builder/types/Coordinate.java

@@ -2,8 +2,6 @@ package exopandora.worldhandler.builder.types;
 
 import java.util.function.Function;
 
-import javax.annotation.Nullable;
-
 import net.minecraftforge.api.distmarker.Dist;
 import net.minecraftforge.api.distmarker.OnlyIn;
 
@@ -50,7 +48,6 @@ public abstract class Coordinate<T extends Number> implements ICoordinate<T>
 		return this.type.format(this.value, this.zero());
 	}
 	
-	@Nullable
 	public static <S extends Number, U extends Coordinate<S>> U parse(U coordiante, String input, Function<String, S> parser)
 	{
 		for(EnumType type : EnumType.values())

src/main/java/exopandora/worldhandler/event/ClientEventHandler.java

@@ -88,7 +88,7 @@ public class ClientEventHandler
 	@SubscribeEvent
 	public static void clientChatEvent(ClientChatEvent event)
 	{
-		if(!Minecraft.getInstance().isSingleplayer())
+		if(!Minecraft.getInstance().isSingleplayer() && Minecraft.getInstance().player != null)
 		{
 			CommandDispatcher<CommandSource> dispatcher = new CommandDispatcher<CommandSource>();
 			CommandHelper.registerCommands(dispatcher);

src/main/java/exopandora/worldhandler/gui/container/impl/GuiWorldHandler.java

@@ -17,6 +17,7 @@ import exopandora.worldhandler.gui.widget.IContainerWidget.EnumLayer;
 import exopandora.worldhandler.gui.widget.WidgetCommandSyntax;
 import exopandora.worldhandler.gui.widget.WidgetNameField;
 import exopandora.worldhandler.gui.widget.WidgetShortcuts;
+import exopandora.worldhandler.gui.widget.WidgetTabRenderer;
 import exopandora.worldhandler.gui.widget.WidgetWatch;
 import exopandora.worldhandler.gui.widget.button.GuiButtonTooltip;
 import exopandora.worldhandler.util.ActionHelper;

src/main/java/exopandora/worldhandler/gui/content/impl/ContentButcher.java

@@ -23,9 +23,11 @@ import exopandora.worldhandler.util.CommandHelper;
 import net.minecraft.client.Minecraft;
 import net.minecraft.entity.Entity;
 import net.minecraft.entity.EntityType;
+import net.minecraft.entity.player.PlayerEntity;
 import net.minecraft.util.math.AxisAlignedBB;
 import net.minecraft.util.text.IFormattableTextComponent;
 import net.minecraft.util.text.TranslationTextComponent;
+import net.minecraft.world.World;
 import net.minecraftforge.api.distmarker.Dist;
 import net.minecraftforge.api.distmarker.OnlyIn;
 import net.minecraftforge.registries.ForgeRegistries;
@@ -115,18 +117,24 @@ public class ContentButcher extends Content
 		slaughter.active = enabled;
 	}
 	
-	public static void slaughter(String player, Collection<EntityType<?>> entities, int radius)
+	public static void slaughter(String username, Collection<EntityType<?>> entities, int radius)
 	{
-		AxisAlignedBB aabb = new AxisAlignedBB(Minecraft.getInstance().player.getPosition()).grow(radius);
+		PlayerEntity player = Minecraft.getInstance().player;
+		World world = Minecraft.getInstance().world;
 		
-		for(EntityType<?> entity : entities)
+		if(player != null && world != null)
 		{
-			List<? extends Entity> targets = Minecraft.getInstance().world.getEntitiesWithinAABB(entity, aabb, Predicates.alwaysTrue());
+			AxisAlignedBB aabb = new AxisAlignedBB(player.getPosition()).grow(radius);
-			targets.removeIf(target -> Minecraft.getInstance().player.equals(target));
 			
-			if(!targets.isEmpty())
+			for(EntityType<?> entity : entities)
 			{
-				CommandHelper.sendCommand(player, new BuilderButcher(entity.getRegistryName(), radius));
+				List<? extends Entity> targets = world.getEntitiesWithinAABB(entity, aabb, Predicates.alwaysTrue());
+				targets.removeIf(target -> player.equals(target));
+				
+				if(!targets.isEmpty())
+				{
+					CommandHelper.sendCommand(username, new BuilderButcher(entity.getRegistryName(), radius));
+				}
 			}
 		}
 	}

src/main/java/exopandora/worldhandler/gui/content/impl/ContentChangeWorld.java

@@ -75,8 +75,11 @@ public class ContentChangeWorld extends ContentChild
 			return new IntegratedConnection(folder, worldSettings, dimensionGeneratorSettings);
 		}
 		
-		Minecraft.getInstance().world.sendQuittingDisconnectingPacket();
+		if(Minecraft.getInstance().world != null)
-		Minecraft.getInstance().unloadWorld();
+		{
+			Minecraft.getInstance().world.sendQuittingDisconnectingPacket();
+			Minecraft.getInstance().unloadWorld();
+		}
 		
 		if(isRealms)
 		{

src/main/java/exopandora/worldhandler/gui/content/impl/ContentCommandStack.java

@@ -5,6 +5,8 @@ import java.util.Collections;
 import java.util.List;
 import java.util.function.Consumer;
 
+import javax.annotation.Nullable;
+
 import com.google.common.base.Predicates;
 import com.mojang.blaze3d.matrix.MatrixStack;
 
@@ -240,7 +242,12 @@ public class ContentCommandStack extends ContentChild
 	
 	private void setCommand(int index, String command)
 	{
-		this.builderCommandStack.getPassenger(index + HEAD_LENGTH).setCommand(command);
+		EntityNBT entity = this.builderCommandStack.getPassenger(index + HEAD_LENGTH);
+		
+		if(entity != null)
+		{
+			entity.setCommand(command);
+		}
 	}
 	
 	private void addCommand(int index)
@@ -253,9 +260,17 @@ public class ContentCommandStack extends ContentChild
 		this.builderCommandStack.removePassenger(index + HEAD_LENGTH);
 	}
 	
+	@Nullable
 	private String getCommand(int index)
 	{
-		return this.builderCommandStack.getPassenger(index + HEAD_LENGTH).getCommand();
+		EntityNBT entity = this.builderCommandStack.getPassenger(index + HEAD_LENGTH);
+		
+		if(entity != null)
+		{
+			return entity.getCommand();
+		}
+		
+		return null;
 	}
 	
 	private int getCommandCount()

src/main/java/exopandora/worldhandler/gui/content/impl/ContentNoteEditor.java

@@ -31,6 +31,7 @@ import net.minecraft.util.math.BlockPos;
 import net.minecraft.util.text.IFormattableTextComponent;
 import net.minecraft.util.text.StringTextComponent;
 import net.minecraft.util.text.TranslationTextComponent;
+import net.minecraft.world.World;
 import net.minecraftforge.api.distmarker.Dist;
 import net.minecraftforge.api.distmarker.OnlyIn;
 
@@ -211,7 +212,14 @@ public class ContentNoteEditor extends Content
 	
 	private SoundEvent getSoundEvent(BlockPos blockPos)
 	{
-    	return NoteBlockInstrument.byState(Minecraft.getInstance().world.getBlockState(blockPos)).getSound();
+		World world = Minecraft.getInstance().world;
+		
+		if(world != null)
+    	{
+			return NoteBlockInstrument.byState(world.getBlockState(blockPos)).getSound();
+    	}
+		
+		return null;
 	}
 	
 	@Override

src/main/java/exopandora/worldhandler/gui/content/impl/ContentPlayer.java

@@ -22,7 +22,8 @@ import net.minecraft.client.Minecraft;
 import net.minecraft.client.gui.AbstractGui;
 import net.minecraft.client.gui.screen.inventory.InventoryScreen;
 import net.minecraft.client.resources.I18n;
-import net.minecraft.util.math.MathHelper;
+import net.minecraft.entity.player.PlayerEntity;
+import net.minecraft.util.math.BlockPos;
 import net.minecraft.util.text.IFormattableTextComponent;
 import net.minecraft.util.text.TextFormatting;
 import net.minecraft.util.text.TranslationTextComponent;
@@ -119,11 +120,13 @@ public class ContentPlayer extends Content
 			
 			container.add(new GuiButtonBase(x + 118, y + 72, 114, 20, new TranslationTextComponent("gui.worldhandler.entities.player.position.copy_position"), () ->
 			{
-				int posX = MathHelper.floor(Minecraft.getInstance().player.getPosX());
+				PlayerEntity player = Minecraft.getInstance().player;
-				int posY = MathHelper.floor(Minecraft.getInstance().player.getPosY());
-				int posZ = MathHelper.floor(Minecraft.getInstance().player.getPosZ());
 				
-				Minecraft.getInstance().keyboardListener.setClipboardString(posX + " " + posY + " " + posZ);
+				if(player != null)
+				{
+					BlockPos position = player.getPosition();
+					Minecraft.getInstance().keyboardListener.setClipboardString(position.getX() + " " + position.getY() + " " + position.getZ());
+				}
 			}));
 		}
 		else if(Page.MISC.equals(this.page))
@@ -152,18 +155,25 @@ public class ContentPlayer extends Content
 	@Override
 	public void tick(Container container)
 	{
-		this.posXField.setText("X: " + MathHelper.floor(Minecraft.getInstance().player.getPosX()));
+		PlayerEntity player = Minecraft.getInstance().player;
-		this.posYField.setText("Y: " + MathHelper.floor(Minecraft.getInstance().player.getPosY()));
+		
-		this.posZField.setText("Z: " + MathHelper.floor(Minecraft.getInstance().player.getPosZ()));
+		if(player != null)
-		this.scoreField.setText(I18n.format("gui.worldhandler.entities.player.score") + ": " + Minecraft.getInstance().player.getScore());
+		{
-		this.coinsField.setText(I18n.format("gui.worldhandler.entities.player.score.experience") + ": " + Minecraft.getInstance().player.experienceLevel + "L");
+			BlockPos position = player.getPosition();
-		this.xpField.setText(I18n.format("gui.worldhandler.entities.player.score.experience_coins") + ": " + Minecraft.getInstance().player.experienceTotal);
+			
+			this.posXField.setText("X: " + position.getX());
+			this.posYField.setText("Y: " + position.getY());
+			this.posZField.setText("Z: " + position.getZ());
+			this.scoreField.setText(I18n.format("gui.worldhandler.entities.player.score") + ": " + player.getScore());
+			this.coinsField.setText(I18n.format("gui.worldhandler.entities.player.score.experience") + ": " + player.experienceLevel + "L");
+			this.xpField.setText(I18n.format("gui.worldhandler.entities.player.score.experience_coins") + ": " + player.experienceTotal);
+		}
 	}
 	
 	@Override
 	public void drawScreen(MatrixStack matrix, Container container, int x, int y, int mouseX, int mouseY, float partialTicks)
 	{
-		if(Page.START.equals(this.page))
+		if(Page.START.equals(this.page) && Minecraft.getInstance().player != null)
 		{
 			int xPos = x + 175;
 			int yPos = y + 82;

src/main/java/exopandora/worldhandler/gui/content/impl/ContentWorldInfo.java

@@ -147,12 +147,22 @@ public class ContentWorldInfo extends Content
 	
 	private void updateCurrentTime()
 	{
-		this.currentTimeField.setText(I18n.format("gui.worldhandler.world_info.statistics.world_time") + ": " + TextUtils.formatWorldTime(Minecraft.getInstance().world.getWorldInfo().getDayTime()));
+		World world = Minecraft.getInstance().world;
+		
+		if(world != null)
+		{
+			this.currentTimeField.setText(I18n.format("gui.worldhandler.world_info.statistics.world_time") + ": " + TextUtils.formatWorldTime(world.getWorldInfo().getDayTime()));
+		}
 	}
 	
 	private void updateTotalTime()
 	{
-		this.totalTimeField.setText(I18n.format("gui.worldhandler.world_info.statistics.played") + ": " + TextUtils.formatTotalTime(Minecraft.getInstance().world.getWorldInfo().getGameTime()));
+		World world = Minecraft.getInstance().world;
+		
+		if(world != null)
+		{
+			this.totalTimeField.setText(I18n.format("gui.worldhandler.world_info.statistics.played") + ": " + TextUtils.formatTotalTime(world.getWorldInfo().getGameTime()));
+		}
 	}
 	
 	private static <T> String format(T object, Function<T, Object> function)

src/main/java/exopandora/worldhandler/gui/widget/button/GuiButtonPiano.java

@@ -106,7 +106,10 @@ public class GuiButtonPiano extends GuiButtonBase
 	@Override
 	public void playDownSound(SoundHandler soundHandler)
 	{
-		soundHandler.play(SimpleSound.master(this.sound, this.pitch));
+		if(this.sound != null)
+		{
+			soundHandler.play(SimpleSound.master(this.sound, this.pitch));
+		}
 	}
 	
 	private boolean isHoveringBlack(double mouseX, double mouseY)

src/main/java/exopandora/worldhandler/usercontent/factory/ActionHandlerFactory.java

@@ -7,6 +7,7 @@ import java.util.function.Supplier;
 
 import javax.annotation.Nullable;
 
+import exopandora.worldhandler.builder.impl.BuilderGeneric;
 import exopandora.worldhandler.builder.impl.BuilderUsercontent;
 import exopandora.worldhandler.gui.content.Content;
 import exopandora.worldhandler.usercontent.ScriptEngineAdapter;
@@ -16,7 +17,6 @@ import exopandora.worldhandler.usercontent.model.Action;
 import exopandora.worldhandler.util.ActionHandler;
 import exopandora.worldhandler.util.ActionHelper;
 import exopandora.worldhandler.util.CommandHelper;
-import net.minecraft.client.Minecraft;
 import net.minecraftforge.api.distmarker.Dist;
 import net.minecraftforge.api.distmarker.OnlyIn;
 
@@ -81,7 +81,14 @@ public class ActionHandlerFactory
 					}
 					else if(!action.getAttributes().getValue().isEmpty())
 					{
-						Minecraft.getInstance().player.sendChatMessage(action.getAttributes().getValue());
+						String command = action.getAttributes().getValue();
+						
+						if(command.startsWith("/"))
+						{
+							command = command.substring(1);
+						}
+						
+						CommandHelper.sendCommand(player.get(), new BuilderGeneric(command));
 					}
 				};
 			}

src/main/java/exopandora/worldhandler/usercontent/model/BooleanExpression.java

@@ -63,7 +63,12 @@ public class BooleanExpression
 		}
 		else if(this.type == Type.JS)
 		{
-			return (boolean) engine.invokeFunction(this.function);
+			Object result = engine.invokeFunction(this.function);
+			
+			if(result != null && result instanceof Boolean)
+			{
+				return (boolean) result;
+			}
 		}
 		
 		return true;

src/main/java/exopandora/worldhandler/util/ActionHelper.java

@@ -71,77 +71,77 @@ public class ActionHelper
 	
 	public static void timeDawn()
 	{
-		CommandHelper.sendCommand(Minecraft.getInstance().player.getGameProfile().getName(), new BuilderTime(EnumMode.SET, Config.getSettings().getDawn()));
+		CommandHelper.sendCommand(Minecraft.getInstance().getSession().getUsername(), new BuilderTime(EnumMode.SET, Config.getSettings().getDawn()));
 	}
 	
 	public static void timeNoon()
 	{
-		CommandHelper.sendCommand(Minecraft.getInstance().player.getGameProfile().getName(), new BuilderTime(EnumMode.SET, Config.getSettings().getNoon()));
+		CommandHelper.sendCommand(Minecraft.getInstance().getSession().getUsername(), new BuilderTime(EnumMode.SET, Config.getSettings().getNoon()));
 	}
 	
 	public static void timeSunset()
 	{
-		CommandHelper.sendCommand(Minecraft.getInstance().player.getGameProfile().getName(), new BuilderTime(EnumMode.SET, Config.getSettings().getSunset()));
+		CommandHelper.sendCommand(Minecraft.getInstance().getSession().getUsername(), new BuilderTime(EnumMode.SET, Config.getSettings().getSunset()));
 	}
 	
 	public static void timeMidnight()
 	{
-		CommandHelper.sendCommand(Minecraft.getInstance().player.getGameProfile().getName(), new BuilderTime(EnumMode.SET, Config.getSettings().getMidnight()));
+		CommandHelper.sendCommand(Minecraft.getInstance().getSession().getUsername(), new BuilderTime(EnumMode.SET, Config.getSettings().getMidnight()));
 	}
 	
 	public static void weatherClear()
 	{
-		CommandHelper.sendCommand(Minecraft.getInstance().player.getGameProfile().getName(), new BuilderWeather(EnumWeather.CLEAR));
+		CommandHelper.sendCommand(Minecraft.getInstance().getSession().getUsername(), new BuilderWeather(EnumWeather.CLEAR));
 	}
 	
 	public static void weatherRain()
 	{
-		CommandHelper.sendCommand(Minecraft.getInstance().player.getGameProfile().getName(), new BuilderWeather(EnumWeather.RAIN));
+		CommandHelper.sendCommand(Minecraft.getInstance().getSession().getUsername(), new BuilderWeather(EnumWeather.RAIN));
 	}
 	
 	public static void weatherThunder()
 	{
-		CommandHelper.sendCommand(Minecraft.getInstance().player.getGameProfile().getName(), new BuilderWeather(EnumWeather.THUNDER));
+		CommandHelper.sendCommand(Minecraft.getInstance().getSession().getUsername(), new BuilderWeather(EnumWeather.THUNDER));
 	}
 	
 	public static void difficultyPeaceful()
 	{
-		CommandHelper.sendCommand(Minecraft.getInstance().player.getGameProfile().getName(), new BuilderDifficulty(Difficulty.PEACEFUL));
+		CommandHelper.sendCommand(Minecraft.getInstance().getSession().getUsername(), new BuilderDifficulty(Difficulty.PEACEFUL));
 	}
 	
 	public static void difficultyEasy()
 	{
-		CommandHelper.sendCommand(Minecraft.getInstance().player.getGameProfile().getName(), new BuilderDifficulty(Difficulty.EASY));
+		CommandHelper.sendCommand(Minecraft.getInstance().getSession().getUsername(), new BuilderDifficulty(Difficulty.EASY));
 	}
 	
 	public static void difficultyNormal()
 	{
-		CommandHelper.sendCommand(Minecraft.getInstance().player.getGameProfile().getName(), new BuilderDifficulty(Difficulty.NORMAL));
+		CommandHelper.sendCommand(Minecraft.getInstance().getSession().getUsername(), new BuilderDifficulty(Difficulty.NORMAL));
 	}
 	
 	public static void difficultyHard()
 	{
-		CommandHelper.sendCommand(Minecraft.getInstance().player.getGameProfile().getName(), new BuilderDifficulty(Difficulty.HARD));
+		CommandHelper.sendCommand(Minecraft.getInstance().getSession().getUsername(), new BuilderDifficulty(Difficulty.HARD));
 	}
 	
 	public static void gamemodeSurvival()
 	{
-		CommandHelper.sendCommand(Minecraft.getInstance().player.getGameProfile().getName(), new BuilderGamemode(EnumGamemode.SURVIVAL));
+		CommandHelper.sendCommand(Minecraft.getInstance().getSession().getUsername(), new BuilderGamemode(EnumGamemode.SURVIVAL));
 	}
 	
 	public static void gamemodeCreative()
 	{
-		CommandHelper.sendCommand(Minecraft.getInstance().player.getGameProfile().getName(), new BuilderGamemode(EnumGamemode.CREATIVE));
+		CommandHelper.sendCommand(Minecraft.getInstance().getSession().getUsername(), new BuilderGamemode(EnumGamemode.CREATIVE));
 	}
 	
 	public static void gamemodeAdventure()
 	{
-		CommandHelper.sendCommand(Minecraft.getInstance().player.getGameProfile().getName(), new BuilderGamemode(EnumGamemode.ADVENTURE));
+		CommandHelper.sendCommand(Minecraft.getInstance().getSession().getUsername(), new BuilderGamemode(EnumGamemode.ADVENTURE));
 	}
 	
 	public static void gamemodeSpectator()
 	{
-		CommandHelper.sendCommand(Minecraft.getInstance().player.getGameProfile().getName(), new BuilderGamemode(EnumGamemode.SPECTATOR));
+		CommandHelper.sendCommand(Minecraft.getInstance().getSession().getUsername(), new BuilderGamemode(EnumGamemode.SPECTATOR));
 	}
 	
 	public static void tryRun(ActionHandler action)

src/main/java/exopandora/worldhandler/util/CommandHelper.java

@@ -22,7 +22,12 @@ public class CommandHelper
 	
 	public static boolean canPlayerIssueCommand()
 	{
-		return Minecraft.getInstance().player.hasPermissionLevel(1);
+		if(Minecraft.getInstance().player != null)
+		{
+			return Minecraft.getInstance().player.hasPermissionLevel(1);
+		}
+		
+		return false;
 	}
 	
 	public static void registerCommands(CommandDispatcher<CommandSource> dispatcher)
@@ -59,7 +64,7 @@ public class CommandHelper
 			{
 				BlockHelper.setCommandBlockNearPlayer(player, command);
 			}
-			else
+			else if(Minecraft.getInstance().player != null)
 			{
 				Minecraft.getInstance().player.sendChatMessage(command);
 			}

src/main/java/exopandora/worldhandler/util/NBTHelper.java

@@ -54,7 +54,7 @@ public class NBTHelper
 	
 	public static INBT serialize(ResourceLocation[] itemArray)
 	{
-		if(Arrays.stream(itemArray).allMatch(resource -> Items.AIR.getRegistryName().equals(resource)))
+		if(Arrays.stream(itemArray).allMatch(resource -> resource != null && resource.equals(Items.AIR.getRegistryName())))
 		{
 			return null;
 		}

src/main/java/exopandora/worldhandler/util/TextUtils.java

@@ -1,7 +1,5 @@
 package exopandora.worldhandler.util;
 
-import javax.annotation.Nonnull;
-
 import net.minecraft.client.gui.FontRenderer;
 import net.minecraft.util.math.MathHelper;
 import net.minecraft.util.text.IFormattableTextComponent;
@@ -58,21 +56,21 @@ public class TextUtils
 		
 		if(seconds > 60)
 		{
-			int min = MathHelper.floor(seconds / 60);
+			int min = seconds / 60;
 			seconds = seconds % 60;
 			minutes = min;
 		}
 		
 		if(minutes > 60)
 		{
-			int hrs = MathHelper.floor(minutes / 60);
+			int hrs = minutes / 60;
 			minutes = minutes % 60;
 			hours = hrs;
 		}
 		
 		if(hours > 24)
 		{
-			int day = MathHelper.floor(hours / 24);
+			int day = hours / 24;
 			hours = hours % 24;
 			days = day;
 		}
@@ -82,9 +80,7 @@ public class TextUtils
 	
 	public static int toHour(long tick)
 	{
-		int hour = MathHelper.floor((tick + 6000) / 1000F) % 24;
+		return MathHelper.floor((tick + 6000) / 1000F) % 24;
-		
-		return hour;
 	}
 	
 	public static int toMinute(long tick)
@@ -103,7 +99,6 @@ public class TextUtils
 		return String.format("%02d:%02d", hour, minute);
 	}
 	
-	@Nonnull
 	public static IFormattableTextComponent formatNonnull(String text, Object... parameters)
 	{
 		if(text == null)