/**
* This method is called repeatedly so that the game can update its state.
*
* @param lastKey The most recent keystroke.
*/
@Override
public void gameUpdate(final int lastKey) throws GameOverException {
updateDirection(lastKey);
// Erase the previous position.
GameUtils.setGameboardState(this.collectorPos, BLANK_TILE, this.board);
// Change collector position.
this.collectorPos = getNextCollectorPos();
if (isOutOfBounds(this.collectorPos)) {
throw new GameOverException(this.score);
}
// Draw collector at new position.
GameUtils.setGameboardState(this.collectorPos, COLLECTOR_TILE, this.board);
// Remove the coin at the new collector position (if any)
if (this.coins.remove(this.collectorPos)) {
this.score++;
}
// Check if all coins are found
if (this.coins.isEmpty()) {
throw new GameOverException(this.score + 5);
}
// Remove one of the coins
Position oldCoinPos = this.coins.get(0);
this.coins.remove(0);
GameUtils.setGameboardState(oldCoinPos, BLANK_TILE, this.board);
// Add a new coin (simulating moving one coin)
addCoin();
}
/** Insert another coin into the gameboard. */
private void addCoin() {
Position newCoinPos;
Dimension size = Constants.getGameSize();
// Loop until a blank position is found and ...
do {
newCoinPos =
new Position((int) (Math.random() * size.width), (int) (Math.random() * size.height));
} while (!isPositionEmpty(newCoinPos));
// ... add a new coin to the empty tile.
GameUtils.setGameboardState(newCoinPos, COIN_TILE, board);
this.coins.add(newCoinPos);
}
/** Create a new model for the gold game. */
public GoldModel() {
Dimension size = GameUtils.getGameboardSize();
// create a new gameboard and fill it with BLANK_TILE
board = new GameTile[size.width][size.height];
GameUtils.fillBoard(board, BLANK_TILE);
// Insert the collector in the middle of the gameboard.
this.collectorPos = new Position(size.width / 2, size.height / 2);
GameUtils.setGameboardState(collectorPos, COLLECTOR_TILE, board);
// Insert coins into the gameboard.
for (int i = 0; i < COIN_START_AMOUNT; i++) {
addCoin();
}
// TODO remove
System.out.println("GoldModel in orig2011.v3");
}