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Qobacha wrote:
if(y - radius < 0 || y + radius > gameHeight)
{
yvel = -yvel;
}
This is where it inverts the direction. Check if y is larger than the screens' height, and if so, set it to 0 
Bastard Programmer from Hell 
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You were right i have been so stupid. I have set y to 0 and its working. Now the first part done. Starting on user input and collision detection between the user and balls
Thanks
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Small things are easily overlooked. Good luck
Bastard Programmer from Hell
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Its me again. I'm now working on the very last part of the exercise. The program should now detect the collision between the balls and the rectangle. How do i check if the ball and the square are in contact.
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Qobacha wrote: How do i check if the ball and the square are in contact.
Rectangle.IntersectsWith[^] would be an option 
Bastard Programmer from Hell 
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Can you check if my code given below and see if I can be able to use IntersectWith.
public partial class Form1 : Form
{
bool collided = false;
Player player;
List<Ball> balls;
const int fps = 60;
public Form1()
{
InitializeComponent();
balls = new List<Ball>();
Random r = new Random();
for(int i =0; i<1;i ++)
{
balls.Add(new Ball(Width, Height,r));
}
var task = new Task(Run);
task.Start();
player = new Player()
{
x = this.Width/2,
y = (Height*9/10),
xvel = 10,
brush = Brushes.Black,
};
}
protected void Run()
{
while (true)
{
for(int i = 0; i < balls.Count; i++)
{
balls[i].Move(this.Width);
}
this.Invalidate();
Thread.Sleep(1000 / fps);
}
}
private void Form1_Paint(object sender, PaintEventArgs e)
{
Graphics g = e.Graphics;
g.Clear(Color.White);
for(int i = 0; i < balls.Count; i++)
{
balls[i].Draw(g);
}
player.DrawPlayer(g);
}
private void CheckCollision(PaintEventArgs e)
{
if (player.IntersectsWith(balls))
{
player.Intersect(balls);
if (!player.IsEmpty)
{
collided = true;
MessageBox.Show("collision detected");
}
}
}
}
public class Player
{
public float x, y, xvel;
public Brush brush;
public Player()
{
}
public void DrawPlayer(Graphics g)
{
g.FillRectangle(brush, new RectangleF(x, y, 30,30));
}
public void MovePlayerLeft(int gameWidth)
{
if (x > 0)
{
x -= xvel;
}
}
public void MovePlayerRight(int gameWidth)
{
if (x < gameWidth-47)
{
x += xvel;
}
}
}
public class Ball
{
public float x, y, yvel, radius;
public Brush brush;
public Ball(int gamewidth,int gameHeight,Random r)
{
x = r.Next(gamewidth);
y = r.Next(gameHeight);
yvel = r.Next(2) + 5;
radius = r.Next(10) + 5;
brush = new SolidBrush(Color.Blue);
}
public void Move(int gameHeight)
{
if (y + radius >= gameHeight)
{
y = 0;
}
y += yvel;
}
public void Draw(Graphics g)
{
g.FillEllipse(brush, new RectangleF(x-radius,y - radius, radius * 2, radius * 2));
}
}
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Maybe the approach i took to develop the game was wrong from the start. Starting the new game using pictures as my objects maybe a better option.
modified 1-May-12 8:58am.
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The IntersectsWith method will only work for a Rectangle, not for "any" class.
Yes, it might be easier to use controls, since they all have a location, a Width and Height. That means that you'll still have to check whether those boundaries intersect.
Bastard Programmer from Hell
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Before I could give up what do you think of this attempt. Making new method to check the position of the ball against the player?
Here is my attempt not sure if it will work though.
private bool collision(Player player)
{
return !(player.x > x + radius
|| player.x + 30 < x
|| player.y > y + radius
|| player.y + 30 < y);
}
namespace MyFirstGameTutorial
{
public class Ball
{
Player square;
public float x, y, yvel, radius;
public Brush brush;
public Ball(int gamewidth,int gameHeight,Random r)
{
x = r.Next(gamewidth);
y = r.Next(gameHeight);
yvel = r.Next(2) + 2;
radius = r.Next(10) + 5;
brush = new SolidBrush(Color.Blue);
}
public void Move(int gameHeight)
{
if (y + radius >= gameHeight)
{
y = 0;
}
y += yvel;
}
public void Draw(Graphics g)
{
RectangleF circle = new RectangleF(x - radius, y - radius, radius * 2, radius * 2);
g.FillEllipse(brush, circle);
}
private bool collision(Player player)
{
return !(player.x > x + radius
|| player.x + 30 < x
|| player.y > y + radius
|| player.y + 30 < y);
}
}
}
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Looks like it could work 
Why the +30? (I'm not suggesting it's wrong or anything, just curious)
Bastard Programmer from Hell 
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You might want to consider moving over to WPF.
The learning curve is a little steep. However, once you get there, you will find it easier to create animations, styles for images etc.
A Beginner's WPF Animation Tutorial[^] article might help you get started.
In any case, C# offers a wrapper over GDI+ which could help you get started as well - Professional C# - Graphics with GDI+[^].
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It would be easier to write a simple 2D XNA game. The game loop is already set up when creating the project and access to the graphics device and the keyboard are also set up automatically. He would just have to fill in the code to actually read the keyboard and updating the graphics (very simple when using the SpriteBatch) inside the game loop. He would have far less to learn and could get some decent results very quickly.
At least artificial intelligence already is superior to natural stupidity
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Hi,
Unfortunately, I'm not allowed to use any existing game framework.
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Thank
I'll check your links and see if I'll they'll help
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I have a MenuStrip that contains ToolStripMenuItem's with submenus. In a few of the submenus, I have two ToolStripMenuItem's to move up or down a list of options with keyboard shortcuts. For example:
RootMenuItem (e.g. File)
SubItem0 (e.g. New)
SubItem1
SelectPrevious (Ctrl+Left)
SelectNext (Ctrl+Right)
---------------------------
Option 0
Option 1
...
Option N
SubItem2
SelectPrevious (Ctrl+Up)
SelectNext (Ctrl+Down)
--------------------------
Option 0
Option 1
...
Option MNow, all of the "Option N" ToolStripMenuItem's have their CheckOnClick property set to true, and they all have the same event handler. When I click the "SelectPrevious" or "SelectNext" options, everything works fine (Option N is unchecked, and Option (N - 1) or (N + 1) is checked, as appropriate). In addition, if the final option is selected SelectNext is disabled, and the same for SelectPrevious when the first option is selected.
Here is the problem: If I use any of the keyboard shortcuts for SelectPrevious or SelectNext, the next time I hover over the associated SubItem, then hover over a different SubItem, the entire menu is closed.
Here are the steps to reproduce:
1. RootMenuItem->SubItem1->SelectPrevious using the shortcut Ctrl+Left
2. Hover over RootMenuItem->SubItem1 until the submenu appears
3. Move the mouse over RootMenuItem->SubItem0 (or SubItem2)
After step 3, the entire menu closes. The next time I attempt to open the menu (without using a keyboard shortcut in between), everything works fine. Basically, every time I use the keyboard shortcuts any number of consecutive times, the next time I open the submenu that hosts a ToolStripMenuItem that was clicked via a keyboard shortcut, the menu closes and resets to some "good" state that allows it to work correctly the next time.
Has anyone else experienced this? Is there any way to fix it, or is it just a .Net bug? I'm using .Net 4.0 on Windows XP SP3, in case it matters. Thanks,
Sounds like somebody's got a case of the Mondays
-Jeff
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I can't say I've seen this exact issue but the mention of shortcut keys and disabled menu items made me recall something similar.
I had a contextmenustrip where items were enabled or disabled dynamically in the Opening event. The shortcut keys were a bit erratic and eventually I discovered my mistake.
What I hadn't understood was that a shortcut calls the item's click event handler directly but only if the item is enabled. The shortcut did NOT trigger the menu Opening event which I was relying on to set the item enabled states correctly.
Is your problem caused by some logical fault related to assumed enable states of menu items?
Alan.
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Thanks for posting a response! However, I don't think that is the issue in this case. The only events I am subscribed to are the click events on leaf items (definition: leaf items are menu items without submenus). All of the buttons in all of my menus are coming out with the appropriate checked and enabled states. The problem is just that something is happening to tweak the menu state when I use the shortcut keys instead of clicking the button through the GUI. None of my code is behaving differently depending on whether the menu items are clicked via shortcut keys, using the keyboard, or with the mouse. This has to be a .Net anomaly, but I was hoping someone else had seen this issue and knew a work-around.
My next step is to comment out each line of code in my click event handler, to see if removing any of the commands makes this work so I can be more specific on what the problem is. Thanks for your time,
Sounds like somebody's got a case of the Mondays
-Jeff
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Hi.
I have a big problem. I need some help with my cheat detector application which I created in C#.  This application scan and detect almost all cheat for Counter Strike 1.6, but a cheat it can't be detected with my application because it doesn't modify the size of modules from process hl.exe and it doesn't appear with a strange *.dll
The cheat is called Leis (Silent Aim) and it is just an executable with some files (*.cfg). For the cheat to work , the process hl.exe must be opened and the video renderer of hl must be OpenGL. The cheat is an executable (called leis.exe) which once opened it inject the code into *.dll (i think it is opengl32.dll) and it close. So, it became hard to detect this cheat with my application.
I tried:
* with Checksum (MD5 / CRC32 / Tiger and other) of modules from hl.exe and checksum of process hl.exe - doesn't work, because its the same checksum even though the cheat is activate or not.
* with memory adress - doesn't work.
* with debugger to see the dll necessary for his work: cprytbase.dll , sspicli.dll, sechost.dll , lpk.dll, user32.dll, gdi32.dll, usp10.dll, rpcrt4.dll, advapi32.dll, kernelbase.dll, msvcrt.dll, kernel32.dll, ntdll.dll, imm32.dll, msctf.dll, opengl32.dll, glu32.dll, ddraw.dll , dciman32.dll , setupapy.dll, cfgmgr32.dll, oleaut32.dll, ole32.dll, devobj.dll and user32.dll.
In common with Counter Strike 1.6 it has: ntdll.dll, kernel32.dll, msvcrt.dll, sechost.dll, ole32.dll and opengl32.dll.
Any ideas? Please, I need some help to finish my project
I want to specify that I am still a beginner in C# .
Sorry for my bad english.
Thank you in advance.
modified 19-Apr-12 12:30pm.
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amx_tiger wrote: once opened it inject the code into *.dll
Do a diff between a regular and an infected opengl32 library. Sounds like that's the signature you'd want to detect, not hl.exe.
Bastard Programmer from Hell
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The problem is that the signatures match in each case I said in the first post that I checked the signatures for all the modules used by the hl.exe process, and all the signatures match between them There is no difference between them in: signatures or memory adress for all the modules used by the hl.exe process. This is why I came here with this questions/problem.
Anyway, thank you for the answer.
Another idea?
Again, I am sorry for my bad english
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Use an app that captures and compares the registray, before / after the attack. Use another tool to track what files it's writing.
Does the lei-patch always work, or does it *need* specific versions to work? What happens if the targetted files are readonly?
Bastard Programmer from Hell
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All the version of that cheat (leis/silent aim) run perfectly in any Counter Strike 1.6 (original or modified) which video renderer is set to OpenGL, if I set the video renderer into D3D (Direct3D) or Software, the game with the cheat activated will crush after connection to a server.
I tried to set the folder of counter strike 1.6 to ReadOnly, but the cheat still work I tried to set the attributes at opengl32.dll to ReadOnly, but I haven't access to modify that attributes  .
About registry, the cheat seems to don't modify anything .
Thank you for your response
Again, I am sorry for my bad english
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this thing probably modify memory direct without writing to any file, if no address changes between executions, them i think you won't be able to detect this cheat, unless you can scan the memory for inconsistences with a clear hl.exe process...
it's necessary to execute the exe file whenever you want to use the cheat? if yes, them you can simple scan the file system for this exe and assume that the user is using it if it is found.
sorry if i said sh*t, my english sucks and i never tried to make an app like this...
I'm brazilian and english (well, human languages in general) aren't my best skill, so, sorry by my english. (if you want we can speak in C# or VB.Net =p)
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Yes, it is neccessary to run the cheat (executable) everytime you want to play with cheat.
I thought on this solution with a simple scan , but it isn't so efficient because the player can detele the cheat and then to scan of cheats
Thank you for responose
Other ideas?
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Hi all,
It's been few days I have interoperability issue with service WCF(MICROSOFT FRAMEWORK.NET 3.5)deployed in IIS 7.5 and Java client Unit Testing Spring Framework. The service uses a MTOM property to send attached file in the SOAP Header request.
To check if my WebService works well, I developed a C# client and it works, my client .net can communicate with my service .net.
But the goal is to call this service with Java client.
I've done two test, one with SOAPUI and I get this error message :
"IIS 7.5 Erreur détaillée - 400.0 - Bad Request"
and the other one is with a Java client I got the same error message.
I do not have any clue about where does it might come from?
Moreover, I enable Java client and server side, the MTOM property even in SOAPUI.
If anyone got an idea or a solution, I will really appreciate.
Thank you.
My Configuraion Binding Java client Side (Context File) :
<jaxws:client id="myService"
serviceClass="myServiceSoapBinding">
<jaxws:outFaultInterceptors>
<ref bean="clientWSOutFaultInterceptor" />
</jaxws:outFaultInterceptors>
<jaxws:binding>
<soap:soapBinding version="1.1" mtomEnabled="true" />
</jaxws:binding>
<jaxws:features>
<cxf:fastinfoset />
</jaxws:features>
</jaxws:client>
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