Random Background

BlitzPlus Forums/BlitzPlus Programming/Random Background

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Ok, I've got most of my shoot 'em up finished, but it needs some sort of scrolling, randomly generated background. It needs to give the illusion that you're travelling very fast, and not create any slowdown issues. How could I do this? I've got a few ideas:

1)The obvious way: Draw some backgrounds and load them up, and then use tileimage or whatever. This would take a long time, though.

2) Create some 'interchangable' images that can be used in any order, and then randomly position them/ use types or something to make an infinite scrolling background.

3) Draw some random rectangles/ovals/lines in certain (lighter) colours to give the illusion of a backrgound

Please can you tell me which way from the above I should do this, or tell me another way of doing a background?

Thanks in advance.