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2D All the way! / Scrolling large image file?

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Dracula
18
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Joined: 7th Aug 2006
Location: DBP Recreation of Castle Csejthe
Posted: 30th Jan 2012 19:59
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I have a large (3088x2056) .jpg that I want to scroll over with a screen of 1024x768. I am able to load it as a bitmap, but I can only see the upper left portion of the image. I tried to place it at negative coords, but I get errors with this. Is there a way to scroll the image around with basic coding?

Thanks for any assistance you can give.

Jason
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Iceman
21
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Joined: 10th Jan 2003
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Posted: 31st Jan 2012 23:16
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Erm.... just assign it to a sprite and then put the sprite off screen and move it.

For example:

SET DISPLAY MODE 1024,768,16
sync on : sync rate 0
color backdrop rgb(0,0,0)
cls 0
hide mouse
x=1600:y=0
load image "YOURIMAGEHERE.bmp",800,1
sprite 1,x,y,800
do
sprite 1,x,y,800
x=x-1
sync
loop
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Dracula
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Joined: 7th Aug 2006
Location: DBP Recreation of Castle Csejthe
Posted: 2nd Feb 2012 18:11
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This works, but why do you start with x=1600? If the image were of a smaller size (that is still larger than the screen dimensions), would you still use x=1600?

Thank you!

Jason
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Iceman
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Posted: 4th Feb 2012 21:26
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You can start with any number....It is just the amount that it puts if off the screen to start with.

You could use x=1025 and it would just be off the screen by 1 pixel.
Its up to you what you set it to.

Its taking the top left co/ord of the image/sprite and putting it just off screen, so it does not matter what size your image is...It will still be off screen.
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