|
I am working on a game that requires knowing the distance between two objects on the screen. In other words point 1 and point 2 put into a function and the radius of (or actual distance between ) the two points returned by the function. Game pieces need to be able to calculate their "close neibors" and their "far neibors" for my program to work correctly. So far I've sent in point 1 to a function that returns an array of points that make up a circle. I then use the circle returned to try and calculate whether point 2 is inside or outside of the circle. This method is a mess and is not very accurate most of the time. Since VB.NET doesn't have a neat function for this like rectangle.contains(point) I'm a little lost because my geometry is very very rusty. Can somebody help me with a simple and quick function for this?
Thanks.
FrappyDan - TheMadProgrammer
|
|
|
|
|
Hi Dan,
Perhaps you should consider forgetting the idea of areas around the game pieces and think more in terms of distances.
In other words, only determine the distances between all pieces, subtract their "personal space" from these distances, and you end up with which is (too) close and which (too) far.
This way you also do not need to store a whole lot of data in memory that you won't ever even use. Instead you only get two values per game piece: position and personal space.
The following function may be of use to you:
<br />
Public Function RoundToSignificance(ByVal number As Integer, ByVal significance As Integer) As Integer<br />
'Round number up or down to the nearest multiple of significance<br />
Dim d As Double<br />
d = number / significance<br />
d = Round(d, 0)<br />
RoundToSignificance = d * significance<br />
End Function
With it you can determine for instance in which direction a game piece should preferably (not) move.
Frappydan wrote: calculate whether point 2 is inside or outside of the circle
If the idea is to make a game piece react when another game piece comes within its bounds, you simply look at the distances after a piece has moved. This way it is also much easier to take into account special rules areas or obstructions, and such.
Hope this is of help to you,
Johan
My advice is free, and you may get what you paid for.
|
|
|
|
|
If you know the coordinates of the objects you can work out the magnitude of the displacement (vector)
formula is:
|vector| = sqrt((x*x) + (y*y) + (z*z))
so the vector would be pointA - pointB.
Hope I have understood you and that this helps.
this is a quick post as i am in a rush so i may have missed something out - post again if i have not been clear.
Thanks
Dan
|
|
|
|
|
I have a doubt regarding the Center Screen property of a form. When creating a application, I set the centerscreen property to 'CENTER'. But can I assure that this form will be displayed in the center of any monitor in the client side? I read in an article that this is an issue which the developers wouldn't even think of. So I just wanted to clarify it.
Thnx for any help.
The name is Sandeep
|
|
|
|
|
Xandip wrote: I set the centerscreen property to 'CENTER'
Is there any property called centerscreen? 
The property is StartPosition, and if you set it to centerscreen than you will always have your application started in center of screen, no matter the monitor type/size.
|
|
|
|
|
Hi All,
I have vb code in the form of temp.bas file.
I want to use that in my VB.NET workspace.
Can any one tell me how to do this?
Thanks in Advance
JN
|
|
|
|
|
Does it contain VB.NET code ? If not, you won't be able to use it.
Christian Graus - Microsoft MVP - C++
"I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )
|
|
|
|
|
VB.net does not support bas files. The replacement is the .Module file.
In a new VB.Net project, just add a new Module and paste your code into it.
However, it will probably not compile. VB.Net is rather different from VB. So, check the Errors tab, it will tell you what needs changing.
In the long run it would be best to rewrite your code as a class library, as VB.Net is an object orientated language, and module files are just an excuse for those who can't be bothered to upgrade their coding skills. .Net has been around for five years now!
If you have knowledge, let others light their candles at it.
Margaret Fuller (1810 - 1850)
|
|
|
|
|
Thank you very much for response.
The *.bas file contains VB code.
When I copy *.bas file content to my VB.NET workspace *.vb file and compile it shows many error.I am not able to resolve those error.
Is there any otherway we can compile *.bas file and use it VB.NET.
I dont have previous version of VB, can you please tell me how to compile *.bas file to generate exe and run it has standalone utility?
Thanks in Advance
JN
|
|
|
|
|
Nalla Jaipal wrote: I dont have previous version of VB, can you please tell me how to compile *.bas file to generate exe and run it has standalone utility?
Without the VB6 compiler, you're stuck. You don't have anything that will compile that code.
VB.NET will NOT compile a VB6 file without translation. Most of the old VB language is intact, but there are glaring differences in some of the basics. For instance, the Long type in VB6 is now an Integer.
You simply have no choice but to rewrite the code in VB.NET if you want to use it in your app.
|
|
|
|
|
Nalla Jaipal wrote: Is there any otherway we can compile *.bas file and use it VB.NET.
Yes, you can get a copy of VB6 on ebay, and you can build a COM dll which your .NET app consumes. This is a really bad idea, you should rewrite the code. If you don't have VB6, where did the code come from ?
Christian Graus - Microsoft MVP - C++
"I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )
|
|
|
|
|
Hi All,
Thank you very much for all your help..
I think its good idea to rewrite the code in VB.NET.
Thank you all
JN
|
|
|
|
|
hello all,
thanks for visiting this question. Iam a beginner in VB.NET and working with Log4net(v1.2.10). Can anyone please put up sample examples of how to do logging/error trapping using the log4net framework written in VB.NET ?? all help is welcome !
Thanks
R.H
ps. C# are no real help as I need to work only with VB.NET
|
|
|
|
|
All you have to do is Google for "log4net vb.net[^]" and you'll come up with examples.
|
|
|
|
|
Hey:
I want to write some text on the on each cell of rowheaders of Datagrid. I mean on the first column of the datagrids which has the mouse pointer on it.
Is it possible to do it? If yes, can you plesae guide me.
Regards,
Hari
|
|
|
|
|
Are you familiar with creating your own custom controls? If not, you'll have a hard time with this. There's no step-by-step guide to tell you how to do this either.
Basically, your going to have to handle the RowPostPaint[^] event and paint the text yourself. If you want some examples, you'll have to Google for them. Click[^]. I don't have any.
|
|
|
|
|
hi hari,
use following statement
DataGridView1.Rows(rowno).HeaderCell.Value = "YourText"
also be sure RowHeadersVisible property of datagridview1 is set to TRUE
Hope this helps
Rupesh Kumar Swami
Software Engineer,
Integrated Solution,
Bikaner (India)
|
|
|
|
|
hey. i've been searching in the net, but couldnt find it.
1)disable the "X" button on the right top corner
2)create a button that when pressed it closes the application.
im in a hurry because i have to send this work to my teacher in a few hours.
thks in advance 
|
|
|
|
|
1 - you can remove it entirely in the properties for the form, in the designer
2 - the app can call a number of methods, but this.Close() is the easiest.
Christian Graus - Microsoft MVP - C++
"I am working on a project that will convert a FORTRAN code to corresponding C++ code.I am not aware of FORTRAN syntax" ( spotted in the C++/CLI forum )
|
|
|
|
|
hum.. i couldnt find in the form the "designer"..
and in visual basic express edition 2005 it doesnt know this.close()  argh.. really cant find it!
|
|
|
|
|
Having opened the form in Visual Studio, hit F4 to get the properties taskpane showing. Set ControlBox property to False.
Oh, and he meant Me.Close().
this.Close() is C#.
If you have knowledge, let others light their candles at it.
Margaret Fuller (1810 - 1850)
|
|
|
|
|
in the properties of the form, you want to remove set the controlbox property to false, this will also remove mina nd max buttons, you can't remove Close button individually...not that i'm aware of?
The code convention for refering to the form in code in vb.net is me not this (which is C#).
Posted by The ANZAC : "WWBD, What Would Buffy Do?" : "I don't know man, she's stronger than me"
|
|
|
|
|
I have a panel on my form that is docked with a gradient image on it. I then have a group box on top of that with some objects in it. How can I get it so that the image on the panel object shows thru the group box....or at least get the image to form all the way around the group box. It seems like where the text is for the group box, it still shows the system colors.
Any suggestions?
Thanks
Tom Wright
tawright915@gmail.com
|
|
|
|
|
Unfortunatly the 'Transparent' backcolor setting for controls just gives you the same single backcolor as the Form the control is on. So normally you would not get gradient Image to show at all.
However, you could override the Groupbox paint events and work out which bits of the image need to be painted under it, and paint them manually.
If the Group box is in a fixed position I would suggest just pasting the appropriate bit of the gradient image into the group box background image.
If you have knowledge, let others light their candles at it.
Margaret Fuller (1810 - 1850)
|
|
|
|
|
You know for half a day it did not click with me what you said.....until now. So I set the background image property of my main form and ala peanut butter and jelly sandwiches.....the group box was filled in exactly like I wanted it too.
Thanks for the help
Tom Wright
tawright915@gmail.com
|
|
|
|
General 
News 
Suggestion 
Question 
Bug 
Answer 
Joke 
Praise 
Rant 
Admin 
Submit an article or tip
