Use vector to implement enemy list in Robocode

Objective

Robocode in the melee model, how to better grasp the situation of multiple opponents, so as to adopt a better strategy, every player is an urgent need to solve the problem. Most world-class robots use vectors (vector) arrays to hold the information of multiple opponents.

and the role of vector is more than this, the last world champion Yngwie also use vector to preserve the bullet hit information, to provide a basis for better decision-making. Of course this is beyond our topic today, interested friends can look at the enemy class and strategy class in Yngwie.

Well, let's start today's vector tour, and if you're not particularly familiar with the vector in Java, I've finally introduced some knowledge about vectors.

Get a line for our enemy.

Friends familiar with Java know that vectors are used to hold collections of objects. Today we use him to save some information about our enemies, and it's not an easy job to grab the guys that are running around and get into our collection. Kong: "All things are class". So, let's first declare a class: the track class. Take the attributes of the enemy we know as an attribute in this class: name, absolute angle, relative angle, distance, energy, rate of enemy tank relative to the direction of your head, and direction of enemy tank. These are all obtained through the Scannedrobotevent object, the specific API function please refer to the Robocode API help. The code is as follows:

/**
　 *　Track类，保存目标的信息
　 */
package　mytest;
import　robocode.*;
public　class　Track
{
　　　　 public　String　Name;　//敌人坦克的名称
　　　　 //敌人的绝对角度，通过计算得出
　　　 public　double　Heading;
　　　　 //敌人坦克相对于你车头方向的相对角度
　　　 public　double　Bearing;
　　　　 public　double　Distance;　//敌人坦克的距离
　　　　 public　double　Energy;　//能量
　　　　 public　double　Velocity;　//速率
　　　　 public　double　FaceHeading;　//敌人坦克面向的方向
　　　　 public　double　trackX,trackY;　//敌人坦克的坐标
　　　 //下一个标准时间中敌人坦克所在的位置
　　 public　double　nextTrackX,nextTrackY;
　　　　 public　void　update(ScannedRobotEvent　e)
　　　　 {
　　　　　　　 Name=e.getName();　//敌人坦克的名称
　　　　　　　 Bearing=e.getBearing();　//敌人坦克相对于你车头方向的 相对角度
　　　　　　　 Distance=e.getDistance();　//敌人坦克的距离
　　　　　　　 Energy=e.getEnergy();　//能量
　　　　　　　 Velocity=e.getVelocity();　//速率
　　　　　　　 FaceHeading=e.getHeading();　//敌人坦克面向的方向
　　　　 }
}