ClickerTIS/Clicker/MainWindow.xaml.cs

using System.Windows;
using System.Windows.Input;
namespace Clicker
{
    public partial class MainWindow : Window
    {
        public long point = 0;
        public int click = 10;
        public int[] sol_b = new int[] { 100, 500, 1000, 1500 };//цены
        public int[] increased_b = new int[] { 10, 50, 100, 150 };//модификаторы

        public MainWindow() { InitializeComponent(); Update(); }

        public string Update()
        {
            helmets.Content = point.ToString();
            heat.Content = click.ToString();
            helmets2.Content = point.ToString();
            heat2.Content = click.ToString();
            B1.Content = "+" + increased_b[0].ToString() + " за\n" + sol_b[0].ToString() + " шлемов";
            B2.Content = "+" + increased_b[1].ToString() + " за\n" + sol_b[1].ToString() + " шлемов";
            B3.Content = "+" + increased_b[2].ToString() + " за\n" + sol_b[2].ToString() + " шлемов";
            B4.Content = "+" + increased_b[3].ToString() + " за\n" + sol_b[3].ToString() + " шлемов";
            return helmets.Content.ToString() + heat.Content.ToString() + helmets2.Content.ToString() 
                + heat2.Content.ToString() + B1.Content + B2.Content + B3.Content + B4.Content;
        }

        private void Image_MouseDown(object sender, MouseButtonEventArgs e)
        { I_MD(ref point); Update();  }
        public long I_MD(ref long point) { return point += click; }

        private void Upgrade1(object sender, RoutedEventArgs e)
        { Upgrade(ref point, 0); Update(); }
        private void Upgrade2(object sender, RoutedEventArgs e)
        { Upgrade(ref point, 1); Update(); }
        private void Upgrade3(object sender, RoutedEventArgs e)
        { Upgrade(ref point, 2); Update(); }
        private void Upgrade4(object sender, RoutedEventArgs e)
        { Upgrade(ref point, 3); Update(); }
        
        public long Upgrade(ref long point, int i)
        {
            if (point >= sol_b[i])
            {
                point -= sol_b[i]; click += increased_b[i];
                return click;
            }
            return 0;
        }       

        private void Exit(object sender, MouseButtonEventArgs e)
        { Application.Current.Shutdown(); }
    }
}