Unity 2017 Game AI Programming - Third Edition

Using A* Pathfinding

There are many games in which you can find monsters or enemies that follow the player, or go to a particular point while avoiding obstacles. For example, let's take a typical RTS game. You can select a group of units and click on a location you want them to move to, or click on the enemy units to attack them. Your units then need to find a way to reach the goal without colliding with the obstacles or avoid them as intelligently as possible. The enemy units also need to be able to do the same. Obstacles could be different for different units, terrain, or other in-game entities. For example, an air force unit might be able to pass over a mountain, while the ground or artillery units need to find a way around it. A* (pronounced ...