How can I build a base in Terraria that is safe from Old One's Army events?

To build a base in Terraria that is safe from the Old One's Army events, you need to understand the mechanics of the event and how it interacts with your world. The Old One's Army is a wave-based invasion event triggered by placing an Eternia Crystal Stand and an Eternia Crystal. The event spawns enemies that attack in waves, and the goal is to defend the Eternia Crystal from being destroyed. The event can be challenging, especially in higher tiers, so building a base that is safe from this event requires careful planning and execution.

First, let's discuss the mechanics of the Old One's Army event. The event is tied to the Eternia Crystal Stand, which must be placed on a flat surface. The event will only occur in the area around the stand, so if you build your base far enough away from the stand, it will not be affected by the event. The event has three tiers, with each tier becoming progressively more difficult. The first tier is available pre-Hardmode, the second tier is available in Hardmode, and the third tier is available after defeating the Lunatic Cultist. The event spawns enemies that will target the Eternia Crystal, and if the crystal is destroyed, the event ends in failure.

To build a base that is safe from the Old One's Army, you should first choose a location that is far from where you plan to place the Eternia Crystal Stand. The event has a limited range, so if your base is outside of this range, it will not be affected by the event. A good strategy is to build your base in a different biome or on a different layer of the world, such as in the sky or underground. This will ensure that your base is far enough away from the event area to remain safe.

Next, you should focus on building a strong and secure base. This includes using durable building materials such as stone, brick, or metal blocks to create walls and floors. You should also consider adding defensive structures such as traps, lava moats, or dart traps to deter enemies from approaching your base. Additionally, you can place NPCs in your base to help defend against any stray enemies that might wander too close. NPCs like the Nurse, Arms Dealer, and Goblin Tinkerer can provide valuable support during invasions.

When building your base, it's important to consider the layout and design. A well-organized base with clear pathways and designated areas for storage, crafting, and NPC housing will make it easier to manage resources and defend against threats. You should also ensure that your base has adequate lighting and ventilation to prevent enemies from spawning inside. Using platforms and stairs can help you create multi-level structures that are both functional and aesthetically pleasing.

One common mistake to avoid is placing the Eternia Crystal Stand too close to your base. If the stand is within the event's range, your base will be at risk of being overrun by enemies. To avoid this, always place the stand in a separate area that is far from your main base. Another mistake is not preparing adequately for the event. The Old One's Army can be challenging, especially in higher tiers, so make sure you have strong weapons, armor, and accessories before attempting the event.

Advanced techniques for building a safe base include using teleporters to quickly move between your base and the event area. This allows you to defend the Eternia Crystal while keeping your base safe. You can also use actuators to create hidden passages or traps that can be activated during the event. Additionally, you can use wiring to create automated defenses such as flame traps or super dart traps that activate when enemies approach.

Resource requirements for building a safe base include a variety of building materials such as stone, wood, and metal bars. You will also need traps, wiring, and actuators for advanced defenses. Preparing for the Old One's Army event requires strong weapons and armor, as well as accessories that boost your combat abilities. It's also a good idea to stock up on healing potions and buffs to help you survive the event.

Class and equipment considerations are important when building a base and preparing for the Old One's Army. Each class (melee, ranged, magic, and summoner) has its own strengths and weaknesses, so choose a class that suits your playstyle. Melee characters can use strong armor and weapons to tank damage, while ranged characters can attack from a distance. Magic users can deal high damage with spells, and summoners can rely on minions to fight for them. Make sure to equip accessories that enhance your chosen class, such as the Warrior Emblem for melee or the Sorcerer Emblem for magic.

In conclusion, building a base that is safe from the Old One's Army requires careful planning and preparation. By understanding the event mechanics, choosing a safe location, and building a strong and secure base, you can protect your base from the event's waves of enemies. Avoid common mistakes such as placing the Eternia Crystal Stand too close to your base, and use advanced techniques like teleporters and automated defenses to enhance your base's security. With the right resources, equipment, and strategies, you can create a base that is both safe and functional, allowing you to focus on defending the Eternia Crystal and completing the event successfully.