CODEWITHSUNDEEP
javamouseeventmouseclick-event
atilas1
atilas1

Reputation: 441

Changing variable every time function is called

I'm trying to make simple tic-tac-toe game. I have a function that places a symbol every time I click on the grid. I have 2 variables for different symbols xSym and circlSym. I need to change the placed symbol from one to another, every time function mouseClicked is called. Is it possible to do so without any return from a function?

public void mouseClicked(MouseEvent e) {
    int r = e.getY() / cellH;
    int c = e.getX() / cellW;
    print(r, c, (char)xSym);
    refresh();
}

Upvotes: 1

Views: 1053

Answers (1)

Sergey Kalinichenko
Sergey Kalinichenko

Reputation: 727077

Make a boolean member variable isX to represent the current state. When isX is set, xSym is selected; otherwise, circleSym is selected.

Each time end-user clicks your app, change isX's state to the opposite. You can use the NOT ! operator for this, as follows:

boolean isX = true; // X moves first
public void mouseClicked(MouseEvent e) {
    char currentSym = isX ? xSym : circleSym;
    isX = !isX; // Invert isX
    int r = e.getY() / cellH;
    int c = e.getX() / cellW;
    print(r, c, currentSym);
    refresh();
}

Variable currentSym represents the current symbol selected based on the value of isX variable.

Upvotes: 2

Related Questions