You're working on a game that involves enemy wizards dueling each other. Each wizard has at least a dozen different spells at his disposal -- some of them simply inflict damage, while others will temporarily stun or immobilize an enemy, slow him, prevent him from casting spells for a brief duration, teleport the caster a short distance, or give the caster a temporary shield. A wizard can only cast one spell at a time, but each spell has a fixed cooldown (time before it can be cast again) and an associated mana cost (assume no mana regeneration). Describe some ways you might implement a competent AI system for a wizard.

1423

---

Using the example of the Thief-like AI system in the previous section, how do you implement the 'search for player' behavior for the guards, and get them to search an area in a believable fashion? How do you make sure this searching behavior isn't too challenging for players, and ensure that it's usually possible for the player to escape the search if he plays the game well?

1438

---

You're tasked with implementing a computer player for a real-time strategy (RTS) game. Assuming that there is no fog-of-war, how do you implement a system to allow the computer player to determine what parts of the map are controlled by enemy players, and which parts are open to easy exploitation? How do you identify the choke points on the map? How do you find the boundary between the parts of the map under your control and the parts of the map controlled by enemy players? How do you detect an impending enemy attack or a change in an enemy's offensive posture?

1414

---

You have an AI player in an RTS game that occasionally needs to send scouts out onto the map to perform reconaissance. Designers want each scout to move around semi-randomly, exploring various parts of the map, particularly those that have been seen the least recently. Assume that the game is grid-based and has a fog-of-war feature. Also assume that the scouts are very cheap and dispensable, and it's OK for them to walk into the enemy base or other dangerous areas. How would you implement the system to decide where the scouts should go? What sort of data structure do you need to support this? How can you ensure that the scouts do a good job of exploring the map thoroughly? What are the performance characteristics of your approach? Is there any risk of scouts getting stuck trying to go somewhere that isn't even accessible?

1421

---

How does a flocking-based steering system work? What are the components of a flocking-based steering system, and how are they combined? When does flocking-based steering break down or produce undesirable results? Are there any performance implications of the standard flocking model as described by Craig Reynolds, and if so, what are some ways to address them?

1661

---

What are attractors and repulsors? How do they interact with a steering system? When are they useful, and what are their limitations? When can they be used for obstacle avoidance, and when are they insufficient?

1480

---

As you're starting work on your game, one of your colleagues suggests avoiding pathfinding completely, and just using potential fields for pathfinding and navigation. He suggests that you just overlay a big 2D grid over the world, with each cell indicating the distance to the nearest obstacle. Is his idea feasible? Why or why not? When would it cause problems? Regardless of the answer to that question, what are some of the other ways that such a system could be used?

707

---

You're implementing a medieval strategy game in which pikemen should always walk in front of archers, and catapults should always be behind the archers. Explain how you could implement the movement system to ensure that you keep pikemen in front and catapults in the rear as much as possible. Explain how your answer might be different depending on whether or not the units simply need to end up in that configuration when they reach that destination, or if they need to maintain that formation while moving.

668

---

You're tasked with implementing a crowd that walks around the streets of a city. Describe some ways you could implement this in a fast and efficient manner. How do you ensure that crowd members don't touch each other while moving? How do you get crowd members to get out of each others way, and ensure that no two crowd members can get stuck trying to get around each other?

602

---

What is the purpose of keyword in SEO?

1404

---

What is the function of body content relevance?

1788

---

When do the Submission appear on the engines? - SEO

1503

---

What are the functions and parts involved in search engine?

1237

---

What is the use of a program in SEO related information?

1366

---

What are the basic actions that can be performed on search engines? - SEO

1281

---