debug error
Archives Forums/Blitz3D Bug Reports/debug error
| ||
| When i draw a image on the right side of a screen and the image goint over the edge. I grab the image already on the screen and reposition in e.g. 3 pixils to the left. And then i draw the image also on the new position. What i am doing here is creating a sliding image on the screen. I repeat this. In debug mode everythhing works fine. But is full screen mode i have to shift the image 6 pixels. Otherwise the images overlapping echother in a shifted order. Is this a bug in the debugging or a fullscreen bug. |
| ||
| Can you post the code? |
| ||
| i hope its works to get it on the file. I see every time a beautiful BB screen but i cant create it. But here is the code. In debug mode its run fine in Full screen mode its going wrong. ----- program start here ------- ;Run this in menu Program - Debug enabled on ; And the stip animation works ; Set Program - Debug enables off ; and the strip animation goes wrong ; Set graphics Graphics 640,480,16 ; Some image data Global Image1 Global Image2 Global Shift1 Global Shift2 Global Count = 3 ;set work screen SetBuffer BackBuffer() ; create the figure for animation Color 255,0,0 Rect 0,0,64,55,False Rect 1,1,62,53,False ; call the funtion to execute the animanion main Function main () ;Create the image size Shift1 = CreateImage (640,55) Shift2 = CreateImage (640,55) Image1 = CreateImage (64,55) Image2 = CreateImage (64,55) ;get the drawing for movement GrabImage Image1,0,0 GrabImage Image2,0,0 ; clear everything Cls ; Set platime to 20 seconds Timeteller = MilliSecs() +20000 Repeat ; Grab the long strips for animation GrabImage Shift1,3,20 GrabImage Shift2,3,400 Cls ; Replace them on new location DrawImage Shift1,0,20 DrawImage Shift2,0,400 ; Draw the squars DrawImage Image1,640 - Count,20 DrawImage Image2,640 - Count,400 ; Recalculate the position of the squars Count = Count +3 If Count > 65 ; if squars is full on screen reset position Count =3 EndIf ; Make it true othewise the screen flickers Flip True ;repeat this untile 20 seconds are past Until TimeTeller < MilliSecs() End Function --- Program ends here ----- |
| ||
| A yes i forgot this info my system is a laptop Windows XP version 2002 SP2 Intel (R) 82852/82855 graphics card 512 MB work memory. 80 GB HD Free 27 GB on HD CPU centreno 1.76 Ghz And latetst version of BB version 1.98 of all three parts. |
| ||
| In the main loop you repeatedly do: Draw to back buffer Flip Grab from back buffer This has unpredictable results. You can't be sure what the back buffer holds after a flip. So your main loop should do: Draw to back buffer Grab from back buffer Flip Here's an example. Graphics 640, 480 SetBuffer BackBuffer() Shift = CreateImage (640,55) Image = CreateImage (64,55) Rect 0,0,64,55,False Rect 1,1,62,53,False GrabImage Image,0,0 Repeat Cls DrawImage Shift,0,20 DrawImage Image,640 - Count,20 GrabImage Shift,3,20 Flip True Count = Count + 3 If Count > 65 Then Count = 3 Until KeyDown(1) |
| ||
| Thanks for the info. I see what i am doing wrong now. Your completly right. When i follow my program its indeed that behave you say. The back screen is stil in previous step while iam grabbing it. And than i shift everyting while the motion is stil the previous one. BTW how do you get the source code so beautiful on the screen. |
| ||
| What are the forum codes? I used the ordinary code tag. For longer code you can use a codebox, which has scroll bars. |
| ||
| Thanks btw your idea works perfect. I have change the code and now its going on the right way. |
   |