public boolean isSolidTile(float xa, float ya) {
		
		int x0 = (int) (x + xa + 3) / 16;
		int x1 = (int) (x + xa + 13) / 16;
		int y0 = (int) (y + ya + 2) / 16;
		int y1 = (int) (y + ya + 14) / 16;
		
		if (level.getSolidTile(x0, y0) != null) return true;
		if (level.getSolidTile(x1, y0) != null) return true;
		if (level.getSolidTile(x1, y1) != null) return true;
		if (level.getSolidTile(x0, y1) != null) return true;
		
		return false;
	}