public void update() {
welcomeLabel.setText("Welcome! You have " + credits + " credits.");
if (game != null) {
GameSquare gs = game.getGameSquareAt(leftClickRow, leftClickCol);
if (game.getWinner() != -1) {
gamePanel.add(returnToMenuButton);
if (hasWon) gameInfo.setText("You won!");
else gameInfo.setText("You lost.");
} else if (gs.hasOccupant()) {
Occupant o = gs.getOccupant();
if (o instanceof Unit) {
Unit u = (Unit) o;
gameInfo.setText(u.getInfo());
} else gameInfo.setText(o.toString());
itemListModel.removeAllElements();
if (o instanceof Unit) {
List<Item> list = ((Unit) o).getItemList();
for (Item i : list) {
itemListModel.addElement(i);
}
}
} else {
gameInfo.setText("Empty");
}
boardPanel.repaint();
}
}
/** Starts the game running. */
private void startGame() {
/*
* Initialize everything we're going to be using.
*/
this.random = new Random();
this.snake = new LinkedList<>();
this.directions = new LinkedList<>();
this.logicTimer = new Clock(9.0f);
this.isNewGame = true;
// Set the timer to paused initially.
logicTimer.setPaused(true);
/*
* This is the game loop. It will update and render the game and will
* continue to run until the game window is closed.
*/
while (true) {
// Get the current frame's start time.
long start = System.nanoTime();
// Update the logic timer.
logicTimer.update();
/*
* If a cycle has elapsed on the logic timer, then update the game.
*/
if (logicTimer.hasElapsedCycle()) {
updateGame();
}
// Repaint the board and side panel with the new content.
board.repaint();
side.repaint();
/*
* Calculate the delta time between since the start of the frame
* and sleep for the excess time to cap the frame rate. While not
* incredibly accurate, it is sufficient for our purposes.
*/
long delta = (System.nanoTime() - start) / 1000000L;
if (delta < FRAME_TIME) {
try {
Thread.sleep(FRAME_TIME - delta);
} catch (Exception e) {
e.printStackTrace();
}
}
}
}
/** Draws the next frame, i.e. refreshes the scores and game. */
private void nextFrame() {
boardPanel.repaint();
scorePanel.refresh();
}
