VB.Net and Slow Console

[Amzin]

Hello. I'm writing roguelike using VB.NET. It has very slow
console output. Is there any methods to make it work faster?

For example,

Sub PlaceAt(ByVal s As String, ByVal x As Integer, ByVal y As
Integer)
Console.SetCurs orPosition(x, y)
Console.Write(s )
End Sub

Sub Setcolor(ByVal fg, ByVal bg)
Console.Foregro undColor = fg
Console.Backgro undColor = bg
End Sub

For I = 0 To mapwidth
For J = 0 To mapheight
Setcolor(Consol eColor.DarkBlue , ConsoleColor.Bl ue)
PlaceAt(things( map(I, J)).image, I, J)
Next
Next

When mapwidth=80 and mapheight=25 (standard console) screen fills with
coloured symbols in 2 seconds or more (Vista/XP). Is there workaround?

[=?ISO-8859-1?Q?G=F6ran_Andersson?=]

Re: VB.Net and Slow Console

Amzin wrote:

Hello. I'm writing roguelike using VB.NET. It has very slow
console output. Is there any methods to make it work faster?
>
For example,
>
Sub PlaceAt(ByVal s As String, ByVal x As Integer, ByVal y As
Integer)
Console.SetCurs orPosition(x, y)
Console.Write(s )
End Sub
>
Sub Setcolor(ByVal fg, ByVal bg)
Console.Foregro undColor = fg
Console.Backgro undColor = bg
End Sub
>
For I = 0 To mapwidth
For J = 0 To mapheight
Setcolor(Consol eColor.DarkBlue , ConsoleColor.Bl ue)
PlaceAt(things( map(I, J)).image, I, J)
Next
Next
>
When mapwidth=80 and mapheight=25 (standard console) screen fills with
coloured symbols in 2 seconds or more (Vista/XP). Is there workaround?

Doesn't the console remember the color for more than one write? Move the
setting of the color outside the loop:

Setcolor(Consol eColor.DarkBlue , ConsoleColor.Bl ue)
For I = 0 To mapwidth
For J = 0 To mapheight
PlaceAt(things( map(I, J)).image, I, J)
Next
Next

Then perhaps putting together a string for a complete line instead of
writing each character by themselves:

Setcolor(Consol eColor.DarkBlue , ConsoleColor.Bl ue)
For J = 0 To mapheight
Dim line As New Char(mapwidth - 1)
For I = 0 To mapwidth
line(I) = things(map(I, J)).image.Chars (0)
Next
PlaceAt(New String(line), 0, J)
Next


--
Göran Andersson
_____

http://www.guffa.com

[Amzin]

Re: VB.Net and Slow Console

On 9 июн, 02:53, Göran Andersson <gu...@guffa.co mwrote:

Doesn't the console remember the color for more than one write? Move the
setting of the color outside the loop:

Hello, Goran!
It not the case, unfortunately. My real application needs different
colors in each cell or like that - thats why I did insert colouring
into the inner cycle.

[Cor Ligthert[MVP]]

Re: VB.Net and Slow Console

Amzin,

As the solution from Goran or things like that are not possible, then I
assume that you have to accept that you are doing something that needs an
extreme fast (expensive) video board to get a little bit more speed.

You ask for a solution for the speed and then you start to give all kind of
other obstructions which have nothing to do with your first question.

-Cor

"Amzin" <nonamer@gmail. comschreef in bericht
news:ee57a0d6-5d8a-44f1-bdaf-45ba62b62cb5@79 g2000hsk.google groups.com...
On 9 июн, 02:53, Göran Andersson <gu...@guffa.co mwrote:

Doesn't the console remember the color for more than one write? Move the
setting of the color outside the loop:

Hello, Goran!
It not the case, unfortunately. My real application needs different
colors in each cell or like that - thats why I did insert colouring
into the inner cycle.

[Amzin]

Re: VB.Net and Slow Console

On 9 ÉÀÎ, 08:12, "Cor Ligthert[MVP]" <notmyfirstn... @planet.nlwrote :

Amzin,
>
As the solution from Goran or things like that are not possible, then I
assume that you have to accept that you are doing something that needs an
extreme fast (expensive) video board to get a little bit more speed.

Nevermind and thank you for your post. When I was using Qbasic any
text output was smooth and fast. My video card was very slow in those
times. As I can see Console class itself IS extremely slow. I'm trying
to use WinApi now instead.

Thank you.

[=?KOI8-R?Q?Go=22ran_Andersson?=]

Re: VB.Net and Slow Console

Amzin wrote:

When I was using Qbasic any
text output was smooth and fast. My video card was very slow in those
times. As I can see Console class itself IS extremely slow. I'm trying
to use WinApi now instead.

Console output is always slow, and has always been. I am pretty sure
that what QBasic did to get fast output was to circumvent the console
(the standard output stream), and write directly to video memory. I know
that Turbo Pascal used that method.

--
Go"ran Andersson
_____

http://www.guffa.com