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I am trying to generate an automatic movement for a soccer player. Trying to create the 8 possible cases that the player has, but when I am going to execute them, the player does not move, I do not know if I am calling the movement wrong or returning the movement wrong. Here is an image of how the court is:

package players;
public class SuJugador implements Player 

 public int move(int history, int player) 

 * 

public static int casos(int $id,inthistory) 

 
 int Move= new int [2];
 int x=history[history.length-1][0];
 int y=history[history.length-1][1];
 switch ($id)
 
 case 1: x=history[history.length-1][0];
 y=history[history.length-1][1]; 
 Move[0]=x;
 Move[1]=y-1; 
 break;

 case 2: x=history[history.length-1][0];
 y=history[history.length-1][1]; 
 Move[0]=x+1;
 Move[1]=y-1; 
 break;

 case 3: x=history[history.length-1][0];
 y=history[history.length-1][1]; 
 Move[0]=x-1;
 Move[1]=y-1; 
 break;

 case 4: x=history[history.length-1][0];
 y=history[history.length-1][1]; 
 Move[0]=x;
 Move[1]=y+1; 
 break;


 case 5: x=history[history.length-1][0];
 y=history[history.length-1][1]; 
 Move[0]=x+1;
 Move[1]=y; 
 break;

 case 6: x=history[history.length-1][0];
 y=history[history.length-1][1]; 
 Move[0]=x-1;
 Move[1]=y; 
 break;

 case 7: x=history[history.length-1][0];
 y=history[history.length-1][1]; 
 Move[0]=x+1;
 Move[1]=y+1; 
 break;

 case 8: x=history[history.length-1][0];
 y=history[history.length-1][1]; 
 Move[0]=x-1;
 Move[1]=y+1; 
 break;

 
 
return null;

public static boolean limit (int x, int y) 

public static boolean validMove(int FutMov,inthistory) 
 
 if (history.length>1)
 
 boolean permitex=false;
 boolean permitey=false;
 int Posx=history[history.length-1][0];
 int Posy=history[history.length-1][1];

 for (int i=0;i<history.length-1;i++)
 

 if (history[i][0]== Posx)
 
 if (history[i+1][0]== FutMov[0]) 
 
 permitex =false;
 
 else 
 
 permitex= true;
 
 
 if (history[i][1]==Posy)
 
 if (history[i+1][1]== FutMov[1]) 
 
 permitey=false;
 
 else 
 
 permitey= true;
 
 
 
 return (permitey 
 return false;

}

I do not know if I am calling the movement wrong or returning the movement wrong.

Apparently, you forgot to return the move from your casos() function, which only does return null;.