I am using Android API's and using the RectF class for rectangles. I have a list of blocks that are on the screen at one time. Each block is given a random position, and then I go through all of the tiles previous, to check if there is an intersection. If there is, it recursively calls the method again to get a new random position and check it against all the other tiles.
I feel like this should work perfectly, except for one thing that may be affecting it. Since recursion opens up so many instances of a method, it needs to finish them off, so I don't know if the rectangle is just being drawn at the initial position, and the rest of the calls are doing nothing?
I have tried quite a few different methods and this seems to be the closest, but something weird is happening and I cant figure it out.
Start method:
private void start() {
timerTask = new TimerTask() {
@Override
public void run() {
if(Game.STATE == Game.State.Playing) {
removeFailedTiles();
Random deathRate = new Random();
int i = deathRate.nextInt(100);
if(i % 10 == 0) {
System.out.println("Death tile");
activeDeathTiles.add(new DeathTile(getRandomPosition()));
//System.out.println(activeDeathTiles.toString());
} else {
System.out.println("Normal Tile");
activeTiles.add(new Tile(tileLifetime, getRandomPosition()));
}
}
if(Game.STATE == Game.State.Lost) {
timerTask.cancel();
timer.cancel();
}
}
};
timer.schedule(timerTask, 1000, tileDelay);
}
Get Random Position method:
private RectF getRandomPosition() {
int screenWidth = (int) Game.SCREEN_WIDTH;
int screenHeight = (int) Game.SCREEN_HEIGHT;
RectF pos = new RectF();
Random random = new Random();
int maxX = (int) (screenWidth - (Tile.TILE_WIDTH * 1.5f)), minX = (int) (Tile.TILE_WIDTH / 1.5f);
int maxY = (int) (screenHeight - (Tile.TILE_HEIGHT * 1.5f)), minY = (int) (Tile.TILE_HEIGHT / 1.5f);
pos.top = random.nextInt(maxY - minY) + minY;
pos.left = random.nextInt(maxX - minX) + minX;
pos.bottom = pos.top + Tile.TILE_HEIGHT;
pos.right = pos.left + Tile.TILE_HEIGHT;
if(isOverlap(pos)) {
return getRandomPosition();
} else {
return pos;
}
}
Helper methods:
private List<RectF> getAllTiles() {
List<RectF> allTiles = new ArrayList<RectF>();
for(RectF t : activeDeathTiles)
allTiles.add(t);
for(RectF t : activeTiles)
allTiles.add(t);
return allTiles;
}
private boolean isOverlap(RectF position) {
for(RectF r : getAllTiles()) {
if(RectF.intersects(position, r)) {
return true;
}
}
return false;
}
If someone could please help me figure out what is going wrong here that would be stellar!
