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Author Topic: Multiple Keys pressed in SFML .Net  (Read 5451 times)

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chilliboy999

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Multiple Keys pressed in SFML .Net
« on: September 11, 2013, 03:40:54 pm »
Hey ho ;)
i've got a problem with pressing multiple keys at the same time. I want to move an object diagonal when
i press e.g. up and right. But my object only moves in one of these directions.
I also read some topics in this forum where people had the same problem, but the solutions didnt work.
Here's my code:
using System;
using System.Collections.Generic;
using System.Linq;
using System.Text;
using SFML.Graphics;
using SFML.Window;

namespace Movement_SFML_2._0
{
    class Program
    {
        static RenderWindow rWin;
        static Sprite sprite;
        static void Main(string[] args)
        {
            rWin = new RenderWindow(new VideoMode(500, 500), "Movement");
            rWin.KeyPressed += new EventHandler<KeyEventArgs>(rWin_KeyPressed);
            sprite = new Sprite(new Texture("a.png"));
            rWin.SetActive();
            while (rWin.IsOpen())
            {
                rWin.Clear();
                rWin.DispatchEvents();
                rWin.Draw(sprite);
                rWin.Display();
            }
        }

        static void rWin_KeyPressed(object sender, KeyEventArgs e)
        {
            rWin.SetTitle(e.Code.ToString());
            if (e.Code == Keyboard.Key.W)
                sprite.Position = new Vector2f(sprite.Position.X, sprite.Position.Y - 10);
            if (e.Code == Keyboard.Key.D)
                sprite.Position = new Vector2f(sprite.Position.X + 10, sprite.Position.Y);
            if (e.Code == Keyboard.Key.S)
                sprite.Position = new Vector2f(sprite.Position.X, sprite.Position.Y + 10);
            if (e.Code == Keyboard.Key.A)
                sprite.Position = new Vector2f(sprite.Position.X - 10, sprite.Position.Y);
        }
    }
}
 

zsbzsb

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Re: Multiple Keys pressed in SFML .Net
« Reply #1 on: September 11, 2013, 04:02:28 pm »
You need to separate your input handling from your updates/movement. The easiest way is to set a boolean flag when a key is pressed/released and then in your game loop do your movement depending on what is pressed. See my reply here to see an example of how to do this.

By the way, you should really not be using global variables (static keyword) and instead use an OOP model.  ;)
« Last Edit: September 11, 2013, 08:15:37 pm by zsbzsb »
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chilliboy999

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Re: Multiple Keys pressed in SFML .Net
« Reply #2 on: September 12, 2013, 02:17:01 pm »
Thanks zsbzsb :D
It worked ;)