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DarkBASIC Professional Discussion / 2d Camera

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Indicium
18
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Joined: 26th May 2008
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Posted: 26th Mar 2011 15:42 Edited at: 26th Mar 2011 16:18
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Hello, I'm making a 2d game with a camera that can zoom in and out. I use the following function to get the screen coordinates of a position based on the camera's position and level of zoom.



But I can't figure out a way to find the actual world position based on given screen coordinates, I assumed I would just reverse the function, but it didn't have the expected results.

Is anybody good with maths that could help? :p

Also, the zoom function doesn't zoom towards the centre of the screen, it zooms towards the corner, can anybody tell me how to make it zoom in the centre?
Thanks
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Neuro Fuzzy
19
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Joined: 11th Jun 2007
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Posted: 26th Mar 2011 23:53
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I made a 2d camera system and posted it in code snippets. It's nice, because it handles movement and zoom for you. I also had one that handled rotation.
http://forum.thegamecreators.com/?m=forum_view&t=172082&b=6

(I started to write up a bit about what I was doing, but I can't really express it in a smallish post, so I think I'll write up a tutorial on it and post the link here)

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