Home >Java >javaTutorial >How Does This `move()` Method Keep a Star Object Within Frame Boundaries?
The move method in the provided code snippet is used to update the position of a Star object. It ensures that the star stays within the bounds of the frame by checking for collisions with the frame edges.
Here's the modified move method:
public void move() { // Check if the star has reached the left or right edge of the frame if (location.x < 0 || location.x > frame.getContentPane().getWidth() - 20) { // Reverse the x direction of movement xIncr = -xIncr; } // Check if the star has reached the top or bottom edge of the frame if (location.y < 0 || location.y > frame.getContentPane().getHeight() - 20) { // Reverse the y direction of movement yIncr = -yIncr; } // Update the location of the star based on its speed translate(xIncr, yIncr); // Update the location of the center of the star location.setLocation(location.x + xIncr, location.y + yIncr); }
The above is the detailed content of How Does This `move()` Method Keep a Star Object Within Frame Boundaries?. For more information, please follow other related articles on the PHP Chinese website!