Added two new commands /summon <entity> <pos> and /remove entities <entities>

src/test/java/demo/Main.java

@@ -49,6 +49,8 @@ public class Main {
         commandManager.register(new ShootCommand());
         commandManager.register(new HorseCommand());
         commandManager.register(new EchoCommand());
+        commandManager.register(new SummonCommand());
+        commandManager.register(new RemoveCommand());
 
         commandManager.setUnknownCommandCallback((sender, command) -> sender.sendMessage(Component.text("Unknown command", NamedTextColor.RED)));
 

src/test/java/demo/commands/RemoveCommand.java

@@ -0,0 +1,34 @@
+package demo.commands;
+
+import net.minestom.server.command.CommandSender;
+import net.minestom.server.command.builder.Command;
+import net.minestom.server.command.builder.CommandContext;
+import net.minestom.server.command.builder.arguments.ArgumentType;
+import net.minestom.server.command.builder.arguments.minecraft.ArgumentEntity;
+import net.minestom.server.command.builder.condition.Conditions;
+import net.minestom.server.entity.Entity;
+import net.minestom.server.utils.entity.EntityFinder;
+
+public class RemoveCommand extends Command {
+
+    public RemoveCommand() {
+        super("remove");
+        addSubcommand(new RemoveEntities());
+    }
+
+    static class RemoveEntities extends Command {
+        private final ArgumentEntity entity;
+
+        public RemoveEntities() {
+            super("entities");
+            setCondition(Conditions::playerOnly);
+            entity = ArgumentType.Entity("entity");
+            addSyntax(this::remove, entity);
+        }
+
+        private void remove(CommandSender commandSender, CommandContext commandContext) {
+            final EntityFinder entityFinder = commandContext.get(entity);
+            entityFinder.find(commandSender).forEach(Entity::remove);
+        }
+    }
+}

src/test/java/demo/commands/SummonCommand.java

@@ -0,0 +1,33 @@
+package demo.commands;
+
+import net.minestom.server.command.CommandSender;
+import net.minestom.server.command.builder.Command;
+import net.minestom.server.command.builder.CommandContext;
+import net.minestom.server.command.builder.arguments.ArgumentType;
+import net.minestom.server.command.builder.arguments.minecraft.ArgumentEntity;
+import net.minestom.server.command.builder.arguments.minecraft.registry.ArgumentEntityType;
+import net.minestom.server.command.builder.arguments.relative.ArgumentRelativeVec3;
+import net.minestom.server.command.builder.condition.Conditions;
+import net.minestom.server.entity.Entity;
+import org.jetbrains.annotations.NotNull;
+
+public class SummonCommand extends Command {
+
+    private final ArgumentEntityType entity;
+    private final ArgumentRelativeVec3 pos;
+
+    public SummonCommand() {
+        super("summon");
+        setCondition(Conditions::playerOnly);
+
+        entity = ArgumentType.EntityType("entity type");
+        pos = ArgumentType.RelativeVec3("pos");
+        addSyntax(this::execute, entity, pos);
+    }
+
+    private void execute(@NotNull CommandSender commandSender, @NotNull CommandContext commandContext) {
+        final Entity entity = new Entity(commandContext.get(this.entity));
+        //noinspection ConstantConditions - One couldn't possibly execute a command without being in an instance
+        entity.setInstance(commandSender.asPlayer().getInstance(), commandContext.get(pos).from(commandSender.asPlayer()).toPosition());
+    }
+}