2D RPG Game In VB Out Of Memory After Graphics.DrawImage
Jun 1, 2010
Well currently im programming a game in Visual Basic and I have it to the point where it draws a map on the form, it loads maps to different areas when you walk on the map, and I am doing so by using Graphics. DrawImage which redraws the map on the screen with the character in the new position. It was working quickly and smoothly until now.
I added some more sprites and now it starts to lag badly then it will throw a Out of Memory exception and it will display a big red x across the form. I watched the memory now as i move the character one spot on the forum and the memory increases 100mb's each time. It wasn't doing this before which is weird. I managed to fix the out of memory error using GC.GarbageCollect but I read that this is bad, also the character still lags across the forum. I really didn't want to release the source code until I was finished but seeing as I need help quickly because this is for a project I am working on for Thursday (End of semester Programming 2 Junior year of high school) I don't have many options.
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Apr 7, 2011
I am trying to do a game application similar to chess, where i need to move the game peaces(graphics) over another graphics which is the game board. using the mouse. How can I do multiple layers of graphics and control their movement(without using direct x, i know nothing about it)? Note: I have visual basic 2010 express, windows xp home
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Dec 21, 2010
Graphics.DrawImage loses resolution
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Jun 5, 2010
I'm trying to improve the speed of my call to:Graphics.DrawImage (Image, Rectangle, Int32, Int32, Int32, Int32, GraphicsUnit, ImageAttributes)I want to display two images, where the old one fades smoothly into the new one, driven by a Timer tick of 10 or 20 ticks a second. The following code runs fine on JPEG files of around half a megabyte or less, but takes much too long (up to half a second) fora 2MB JPEG. Using the Stopwatch control, I isolated the problem to the two .DrawImage calls. Do I need to do this in DirectX or is there a way to improve the efficiency of the routine? I thought of trying to resize the two images beforehand to fit the rectangle, but that's not a simple call (I don't think), and it might just mean moving the delay elsewhere.
(Dim fltOpacity As Single = 1.0F 'opacity value)
(Dim BGrafx As BufferedGraphics)
* * * * * * * * * *
[code].....
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Feb 20, 2009
How do I flip the image upside down (below the first image) Like as if a house were at the waters edge and you can see the house, and the reflection in the water?
code for drawing the image (which is a battery)
VB
'Finding center'
Dim batX As Integer = 160 - (imgDct(cbo_Battery.Text).Width / 2)
Dim batY As Integer = 200 - (imgDct(cbo_Battery.Text).Height / 2)
'Draw Battery
[Code]...
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Dec 13, 2010
This is in a class, the class inherits Panel. VB.net
[Code]...
The goal is to have this image stretched to 300x50 Whenever I do it, it works, but it fades the image from left to right, so that at Left = 0, the image is solid, but at Left = 300, the image is transparent.
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Mar 15, 2011
I need to draw a bitmap background with one or more moving bitmaps in the foreground; something like a chessboard where pieces move across it. I use a timer-tick event to redraw the background and then draw the relocated foreground image like the code below. But I get flicker, even though I set the form to use double-buffering. The culprit seems to be redrawing the background to refresh where the foreground images used to be; no flicker if I replace the background DrawImage with a simple Graphics.Clear. I think what I want to do is draw the background, and the foreground bitmap(s), in memory and then render it all. I used to do this with double-buffering, BitBlt, and .Refresh in VB6 but I haven't found the equivalent in VB2010. This must be a pretty common graphics requirement; what's the trick to it?
Dim Gfx As Graphics
Me.SetStyle(ControlStyles.AllPaintingInWmPaint Or ControlStyles.UserPaint Or ControlStyles.OptimizedDoubleBuffer, True)
Dim rectBrd As Rectangle 'use as clipping region for drawing
[Code].....
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Apr 17, 2010
I have tried to realign the image by down and right one pixel, but still only part of the first row and column are visible when zoomed.I can't find exactly what I'm looking for online.
My computer is an HP-Pavillion dv9600 Notebook PC.
OS: Windows Vista SP2 32-bit
The following code reproduces the problem:
Public Class PictureBug
Dim pxlColor As Color
Dim img As Bitmap = New System.Drawing.Bitmap(My.Resources.TestBug[code]......
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Aug 10, 2010
I'm currently developing a sort of community program that logs game things to their profile.
Let say... you are playing BioShock PC, you passed a checkpoint... but when you passed checkpoint the game needs to trigger a notify to my program that tells that the gamer has passed that specific checkpoint.
Is it possible to read it from the game's memory or do i need to modify the game's executable?
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Apr 16, 2012
I am a noob to Visual Basic and I am currently learning it at my college. I have a final project to do and I am having some trouble deciding on how to attack it. First off, I have done a lot of research and I cannot find my answer, so I am using this(post) as a last resort. The book my prof is having me use is outdated, its coding on vb6, and we are using vb2010...hence my problem. I am not looking for an answer in code, but more to be pointed in the right direction, or maybe some classes that I do not know about.[code]...
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Sep 21, 2010
If you match two same colours or pictures, you get some points. There should be nine pairs of hidden pictures/colours but shows up when clicked but should not in the same order or line. There has to be a count down timer as well.
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May 3, 2011
I'm making a blackjack game for class. Your PlayingCard class totally rocks! I think I said that already Anyway, my board is set up very simply; the player and the dealer have hands with a limit of 5 cards, which I drew as picture-boxes. "sigh" I thought I had this all thought out; the LOGIC of the game was easy in C# console, but applying graphics just adds a whole other dimension to EVERYTHING!
1) Do I need to create an object for each picture-box?
2) How do I tell the program to use cards and their values created in the PlayingCard class to the picture-boxes?
Public Class FRM_BlackJack
'Global Variables
Dim PlayerCards(4) As PlayingCard.Hand
[code]....
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Jun 7, 2009
i want to make a game trainer in vb 2008 but how do i edit the game memory values? like the amo address is
40057C14
& Value is
60
how can i change the value of that to whatever i want ?
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Jan 22, 2010
If you match two same colours or pictures, you get some points. There should be nine pairs of hidden pictures/colours but shows up when clicked but should not in the same order or line. There has to be a count down timer as well.
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Aug 7, 2008
i am wanting to write a program to capture video from in game, the thing is that the video has to be small enough to then broadcast online simultaneously with a three minute delay, i have no idea where to start but am hoping to use VB,
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May 5, 2009
how do i work with the Z axis?If i were to make a video game and i wanted it to be 3D in graphics how is that done?
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Mar 31, 2011
I have some questions about bitmaps and such. I am using the IDXSurfaceFactory::LoadImage Method to load an image and now I want to access its memory buffer, so I can do some direct memory manipulation and copy the content to another buffer afterwards (no BitBlit!). I managed to successfully use LoadImage, but I have no idea how to retrieve the pointer to the memory buffer and other informations. I want to basically know everything about, how and where the image is stored in the memory buffer.
Does windows always load images as BGR regardless of its original format? if not, how can I find out if the loaded image is stored as BGR or RGB. How can I find out how many bits each color has? How can I find out if the image is stored y-reversed? And if you load an indexed png for example, with one color marked as transparent, how can I find out which color is used for transparency?
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Jan 12, 2010
how to create a user interface in a game such as the application XFire using Visual Basic?
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Nov 14, 2011
I have these three images that I have drawn to my form.
GraphicsBuffer.DrawImage(ButtonEasy, New Rectangle(25, 330, 100, 50), 0, 0, 100, 50, GraphicsUnit.Pixel, ImageAttributes)
GraphicsBuffer.DrawImage(ButtonMedium, New Rectangle(150, 330, 100, 50), 0, 0, 100, 50, GraphicsUnit.Pixel, ImageAttributes)
GraphicsBuffer.DrawImage(ButtonHard, New Rectangle(275, 330, 100, 50), 0, 0, 100, 50, GraphicsUnit.Pixel, ImageAttributes)
But I want to make a Boolean expression for when they are clicked so I can trigger the events to load the game mode selected.
Do I do this through resource code or is there a simply way to do this. My idea seems like it would be bad and not syntaxically correct.
Edit: I've gotten to this:
Private Sub ButtonEasy_MouseClick(ByVal sender As Object, ByVal e As MouseEventArgs) _
Handles ButtonEasy.MouseClick
[Code].....
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Jul 8, 2009
At the top of my code I have:
imports system.drawing.graphics
but when I try to use it, no DrawImage or DrawString methods are available. I can get DrawImageAbort rather ironically.[code]...
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May 15, 2011
I've a program that draw an image in a picturebox with DrawImage. This image, a ball (.png transparent), every second is overwritten by another ball of different color. After 3-5 second the edge of the ball becomes bad, because of overwriting.
I tried to clean the background with a FillRectangle before any overwrite, but i need to preserve the windows form background. How can i do that?
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Apr 6, 2010
In my user control's paint handler I iterate over a collection of predefined Bitmap objects and draw them to the client area thusly:
C# version:
private void Control_Paint(object sender, PaintEventArgs e) {
Graphics g = e.Graphics;
foreach (BitmapObj bmpObj in _bitmapObjCollection) {
g.DrawImageUnscaled(bmpObj.Bitmap, bmpObj.Location);
[Code] .....
The code works fine but starts to bog down when a dozen or so objects are added to the collection. My question is: Is there a way to speed this up? Would it be possible to use the Win32 bitblt function to replace DrawImageUnscaled? And if so how?
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Jul 18, 2010
Basically, what I am trying to do is scale part of an image. In VB6 the Scaling version of the BITBLT api worked fine, however in .NET's Drawimage version of it works okay, until a different destination size is specified.url...The red is from the next tile on the source image. and the bottom is missing one row of pixels.I have also screened this, and counted that the left side isn't properly doubled and the very first column of pixels is in 1x1 squares instead of 2x2 like the rest of the image.I don't get why it's obtaining outside the range I set, so here is my code incase it helps, note that you'll need to define a blocks array:[code]
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Oct 9, 2009
using DrawImage I can copy the whole source picture into destination one using its left&top corner and width&height sizes...butI would like to copy A REGION of source picture into destination one using my "starting corner" and my sizes.
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Feb 7, 2012
I am using VB 2008 & drawimage function to copy image A to Image B. My problem is image A has many different colored patches on it and I only want to copy the ones that have a certain RGB value. I was going to set the masking color to the RGB value but remembered that defines the color to ignore - Im interested in the opposite.
I know I could loop through all the pixels and check its color, but its way slow and Im hoping theres something better?
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Feb 5, 2009
This is my first post to these forums so forgive me for any etiquette I may be disregarding.I am creating a custom control that has a TabControl on it. The user will then double click or right click the TabControl to display a ContextMenuStrip asking if they would like to add a new image (or tab) to the project. After they select the image file, I create a new tab, add that to the TabControl, and then I want to create a PictureBox that I draw on in a particular way depending on space available and several other factors.
Where I am having the issue is in drawing the image to the PictureBox, it is only displaying the BackColor and none of the DrawImage work. It is important to note that because of what I am doing it will not suffice to set the PicBox.Image = ImageFile or PicBox.BackgroundImage = ImageFile. I need to select tiles from the image file and then draw them into the PictureBox in a particular way, which changes if the control resizes. Also, I am using a PictureBox because the final image within it can potentially be larger than the containing tab page, and therefore I want the TabPage to generate an AutoScroll bar. If there is another way to do this, please let me know.
Below is a very simple example of what I have currently. What I suspect to be happening is that the PictureBox's Paint event is firing after I do my DrawImage work and basically overriding what I did, but I hope I am wrong.OpenAddTilesetForm() simply displays a form for the user to select which image to use, and the properties pertaining to it.
[Code]...
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Nov 15, 2010
In the following code is the way to make a picture transparent (picture i1 is emty and opacity can get values from 0.00 to 1.00[code]...
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Nov 30, 2011
[Code]...
I don't know how to distort bmpR with destinationPoints0. Which graphic method do I use to transform it? Muchas gracias, Onion Ring (fried) Onion is a recent refuge from Mac OS X and hates Mac App Store. System: Windows 7 x64
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Nov 11, 2011
' Show game directions.[code]...
I think this is actually really easy to do that it isn't documented on here or msdn.
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Nov 5, 2009
In VB 2005, I am calling a C++ DLL function that returns the address in memory and size in bytes of a jpeg image. How can I load that jpeg image directly from memory into a picture box in my VB form? I cannot afford to save it to disk first.
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