Accessing variables

[Junaid2pac]

i am making a game in which 2 thread classes (ball and enemy) are used and the collision math is inside the enemy class since i want the enemy to basically stop after the collision of the ball happens. I want to get the position values from the ball class. Would this be how it would look

This is inside the ball class....after the ball has changed position

code:

Enemy e1 = new Enemy (Ball.this);

and inside enemy class:

code:

Ball bx;   public Enemy(Ball bx) {     this.bx = bx;     x = bx.getXBall();     y = bx.getYBall(); }

but when using x and y inside the enemy class, i don't think the variables are getting the value properly
Please help

[Junaid2pac]

it just uses the original x and y value of the ball, and not the updated real time x and y value position

[Junaid2pac]

i can post the ball class and/or enemy class if that would help

[HellblazerX]

The Enemy object e1 you created only exists inside the Ball class. You need to create a pointer in the Ball and Enemy class for the opposite class, and methods in each one to set those pointers. But I have a question for you: why do you need each class to be a separate thread? You could simply have a main thread that would do the calculations, and your Ball and Enemy classes would simply for storing values.

[Junaid2pac]

i would like to do that but i want the enemy class going if i click another button first and then the ball class for the other button....or is there some way to make 2 buttons for accessing one part of the class? Originally i wanted the enemy to be created when the game starts and have a button so that the ball can be created
pls help if this is possible

[Junaid2pac]

currently in my main class:

code:

if(e.getActionCommand().equals("New Game"))   {                 Enemy enemy = new Enemy(canvas, GameFrame.this);                 enemy.start();   } else if (e.getActionCommand().equals("Start"))   {         Ball b = new Ball(canvas, GameFrame.this);                 b.start();   }

is there a way to just have one class for ball and enemy yet i want the enemy to be created by a one button and ball created by a second button

[Junaid2pac]

I figured out how to put both ball and enemy in the same class, and when i click new game, only the enemy is created and it runs fine because i mad a runEnemy and runBall boolean. when the new game button is clicked, the runEnemy = true, while runBall = false. When the shoot button is pressed, runBall = true, and i set runEnemy = false. But when i click start both the enemy and new ball are created. This is all i need to fix now

Main class:

code:

public void actionPerformed (ActionEvent e)         {               if(e.getActionCommand().equals("New Game"))               {                     runEnemy = true;                     enemy = new Ball(canvas, GameFrame.this);                             enemy.start();               }               else if (e.getActionCommand().equals("Start"))               {                     runBall = true;                     ball = new Ball(canvas, GameFrame.this);                                                 ball.start();               }                }

Ball and enemy class combined:

code:

public void move()         {               if (runBall == true)               {                     elapsed = System.currentTimeMillis() - start;   //Current time             if (!box.isVisible())             return;                         /*Set Ball*/             Graphics g = box.getGraphics();                         g.setXORMode(box.getBackground());                        //Removes trail of the ball             g.fillOval(x, y, xLength, yLength);                     //Enemy e1 = new Enemy (Ball.this);                     ///////////////////////////                         /*Speed of ball*/             x += dx;             y += dy;             Dimension d = box.getSize();                 ///////////////////////////             /*Change velocity of ball*/             ///////////////////////////             if (x>= 615 || y>= 390)             {                 dx = 0;                 dy = 0;             }             else             {                 if (x>=0)                 {                     dx = (Math.cos((Math.toRadians(angle)))) * velocity + windX;                                        //X Speed                 }                 dy = (Math.sin((Math.toRadians(angle)))) * velocity + ((windY + (accelY * (elapsed))) * 0.0005);    //Y Speed             }                     g.fillOval(x, y, xLength, yLength);             g.dispose();               }         }                 public void moveEnemy()         {               if (runEnemy == true);               {               if (!box.isVisible())           return;                   /*Set enemy*/         /////////////         Graphics e = box.getGraphics();                 e.setXORMode(box.getBackground());         e.drawOval(xE,yE,xELength,yELength);                         //Temp collision detection         if (xE - x <= sumR)         {             return;         }                 xE += dxE;         //yE += dyE;         Dimension d = box.getSize();                 ////////////////////////////         /*Change velocity of enemy*/         ////////////////////////////         if(xE >= 600)         {             dxE *= -1;         }         else if(xE <= 50)         {             dxE *= -1;         }         /*if(yE >= 390)         {             dyE *= -1;         }         else if (yE <= 50)         {             dyE *= -1;         }*/                         e.drawOval(xE, yE, xELength, yELength);                 runEnemy = false;               }         }                 public int getXBall()         {               return x;         }                 public int getYBall()         {               return y;         }                 public void run()         {         try         {         draw();           do           {             if (runBall == true)             move();             //if (runEnemy == true)             moveEnemy();                         sleep(25);                                                //Speed of ball(25)           }           while(x<= 615 || y <= 390);                                   //Ball moves until it hits the edge of screen         } catch (InterruptedException e)         {         }         } }