Messages

1

DotNet / Re: Copy events in a new render window

« on: March 15, 2018, 05:26:07 pm »

I was responded to a ru.stackoverflow.com. I think this is a working solution.

Add my own event with Render Window event args.

    public event EventHandler<SizeEventArgs> Resized;
 

Then add a listener for Render Window resized event. I wrote a method for this.

         private void LinkEvents()
        {
            renderWindow.Resized += RenderWindow_Resized;
        }
 

When I recreate window I call LinkEvents() method after window initializing.

Listener method is very simple.

     private void RenderWindow_Resized(object sender, SizeEventArgs e) => Resized?.Invoke(sender, e);
 

When render window event works i call a my event Invoke with arguments. And it works.

2

DotNet / Re: SFML.Net: How do I spawn each n seconds enemies at random position?

« on: March 14, 2018, 10:10:38 pm »

If i understood what you need.

You initialize a List every 5 seconds again. If you want add new enemies without delete old ones, you need initalize a List one time and use it for all enemies.

    public static List<Sprite> lst_sprt = new List<Sprite>();
    public static List<float> lst_posx = new List<float>();
    public static List<float> lst_posy = new List<float>();
 

and delete initialization in SpawnEnemy()

You got the  NullReferenceException because List<T> variable without initialization is null.

P.S: I think it's better to use classes, but it looks like you have not worked with them yet.

3

DotNet / Re: Copy events in a new render window

« on: March 14, 2018, 09:44:42 pm »

This is my own GameWindow class

namespace Amari.Display
{
    public class GameWindow
    {
        internal RenderWindow renderWindow;

        public Viewport viewport;
        public bool IsFullscreen { get; private set; }

        public event EventHandler<SizeEventArgs> Resized;

        public bool IsOpen
        {
            get
            {
                return renderWindow.IsOpen;
            }
        }

        public GameWindow(bool IsFullScreen)
        {
            renderWindow = new RenderWindow(new VideoMode(800, 600), "", IsFullscreen ? Styles.Fullscreen : Styles.Default);
        }

        public void UpdateVideoMode(VideoMode videoMode, bool IsFullscreen)
        {
            renderWindow = new RenderWindow(videoMode, "", IsFullscreen ? Styles.Fullscreen : Styles.Default);
        }

        public void DispatchEvents() => renderWindow.DispatchEvents();
        public void Display() => renderWindow.Display();
    }
 

When i use UpdateVideoMode, the window is recreated and apply new videomode but all events will be reseted.

I add a simple code in GameWindow class and change constructor

        public GameWindow(bool IsFullScreen)
        {
            renderWindow = new RenderWindow(new VideoMode(800, 600), "", IsFullscreen ? Styles.Fullscreen : Styles.Default);
            renderWindow.Resized += RenderWindow_Resized;
        }

        private void RenderWindow_Resized(object sender, SizeEventArgs e)
        {
            Console.WriteLine($"Window resized");
        }
 

When i resize a window i get a message in console "Window resized"

Okay, its right.

But i add a two new lines in costructor

    renderWindow.Close();
    VideoModeUpdate(new VideoMode(1280, 720), false);
 

For example i set a new videomode in constructor.

Window initialized and works, but event doesnt.

I attach a screenshots.

Why i need to copy events? Because in other classes i use a renderWindow events and i dont want to update them after every window change. For example, my own mouse class part.

         private void GameWindow_MouseButtonPressed(object sender, MouseButtonEventArgs e)
        {
            is_Button_Pressed[(int)e.Button] = true;
            is_Button_Released[(int)e.Button] = false;
        }

        private void GameWindow_MouseButtonReleased(object sender, MouseButtonEventArgs e)
        {
            is_Button_Pressed[(int)e.Button] = false;
            is_Button_Released[(int)e.Button] = true;    
        }
 

If i recreate window i need to update this events, but object already created and in use. I need write a method for events link to a new window. But it's not convenient.

Sorry for my english, i'm not very strong in it.

4

DotNet / Copy events in a new render window

« on: March 14, 2018, 07:19:04 pm »

Hi all. SFML.net does not have a Create () method for window. And to apply the changes it needs to be closed and re-created. But events will be reset if i recreate window.

How can I copy all the events in a new rendering window?