pure tic-tac-toe

TicTacToe - MinMax/src/Game.java

@@ -3,13 +3,11 @@ import javax.swing.*;
 public class Game {
 
     private int[] playfield;
-    private int boardValue;
     private boolean turnTaken = false;
     private int winningX1,winningY1,winningX2,winningY2;
 
     public Game(){
         playfield = new int[9];
-        boardValue = 0;
     }
 
     public void place(int position, int player){
@@ -24,19 +22,22 @@ public class Game {
     }
 
     public void computersTurn(){
-        for (int i = 0; i < playfield.length; i++){
-            if (playfield[i] == 0){
-                if (minmax(playfield, 0, true) == 1){
-                    place(i, -1);
-                    return;
-                }
+        boolean isPlaced = false;
+        try {
+            Thread.sleep(750);
+        } catch (InterruptedException e) {
+            e.printStackTrace();
+        }
+        while(!isPlaced){
+            int random = (int) (Math.random() * 9);
+            // if field is free
+            if (playfield[random] == 0) {
+                place(random, -1);
+                isPlaced = true;
             }
         }
     }
 
-    private int minmax(int[] board, int depth, boolean isMaximizing){
-        return 1;
-    }
 
     public boolean checkWin() {
         //only check if winning is possible
@@ -47,11 +48,6 @@ public class Game {
                     winningX1 = 75;
                     winningX2 = 825;
                     winningY1 = winningY2 = i * 300 + 150;
-                    if (playfield[i] == 1){
-                        boardValue = 10;
-                    } else {
-                        boardValue = -10;
-                    }
                     return true;
                 }
                 //vertical
@@ -59,11 +55,6 @@ public class Game {
                     winningY1 = 75;
                     winningY2 = 825;
                     winningX1 = winningX2 = i * 300 + 150;
-                    if (playfield[i * 3] == 1){
-                        boardValue = 10;
-                    } else {
-                        boardValue = -10;
-                    }
                     return true;
                 }
             }
@@ -71,24 +62,13 @@ public class Game {
             if ((playfield[2] == playfield[4] && playfield[2] != 0) && (playfield[2] == playfield[6])){
                 winningX2 = winningY1 = 75;
                 winningX1 = winningY2 = 825;
-                if (playfield[2] == 1){
-                    boardValue = 10;
-                } else {
-                    boardValue = -10;
-                }
                 return true;
             } else if ((playfield[0] == playfield[4] && playfield[0] != 0) && (playfield[0] == playfield[8])){
                 winningX1 = winningY1 = 75;
                 winningX2 = winningY2 = 825;
-                if (playfield[0] == 1){
-                    boardValue = 10;
-                } else {
-                    boardValue = -10;
-                }
                 return true;
             }
         }
-        boardValue = 0;
         return false;
     }
     
@@ -133,12 +113,4 @@ public class Game {
     public int getWinningY2() {
         return winningY2;
     }
-
-    public int getBoardValue() {
-        return boardValue;
-    }
-
-    public void setBoardValue(int boardValue) {
-        this.boardValue = boardValue;
-    }
 }