Got about 5:20 left, and finally I have something that can be played, lost, and you get a score!
Also, I fixed it so that the level is now infinite and randomly generated.

I’ve finally fixed the dodgy collision-checking too: Moving things can now collide, rather than only moving and unmoving.

Thanks to DrPetter’s excellent SFXR, I also have some sounds! Yays! Not entirely sure they go with the graphics, but oh well – better than nothing.

So… I’m going to upload a taster! This may well be the final thing if I don’t add anything else.

Controls:
A/D or left/right to move, W or up to jump.
Click to fire.

The story / instructions (possibly more entertaining than the real thing)

You, archaeologist Ted Stuart (because archaeologists are always action heroes, for some reason) have wandered aimlessly into a cave that has laid undisturbed for millennia. Well, or so you think. It’s actually been disturbed rather frequently by all the dinosaurs living down there.

Living dinosaurs would make your job a waste of time, and so to preserve the livelihood of archaeologists everywhere, you seek to destroy them all! However, your puny gun is no match for their unusually tough skin! Your only hope is that you can shoot down loose rocks from the ceiling to bonk the dinosaurs on the head with. Only then can you remain safely employed in these harsh economic times.

Download current version (may be final, depends if I think of anything to add)  Please download and test!

Beyond the edge of the world, there are... odd floating blocks that shouldn't exist.

I’m currently sorting-out level scrolling. But due to something odd and inexplicable, when you go beyond the level you get odd floating blocks. And invisible ones like the one I’m standing on. No idea why at all, but hopefully it should soon be sorted – I’m going to try changing the level format to a vector of arrays rather than a 2D array, and add new columns to the end of the level as needed.

Ah, just looked it up and apparently vectors of arrays shouldn’t work, so there goes that. Actually, I could use a struct… Yeah, sorted I think.

I’ve added dinosaurs, finally! Well, a dinosaur.

DINOSAUR!!!!

The dinosaur sits there until a rock drops on its head, then it dies – flipping and sliding down the screen. Stylish. Unfortunately, that’s all it does.

While I’m mentioning flipping images, I might as well also mention the terrible memory leak I had. I was flipping the images dynamically, which created countless identical images that were never deleted. Ew. Sorted now though, phew!

I really, really should have set-up a framework before the weekend, it would have made all this much easier…

Currently have 16 hours, 20 minutes left of my 48 hours. Though a lot of that will be sleeping. Better get up early tomorrow then!

I had to forget about sound to get it in on time.

Please leave descriptive comments of your reactions and impressions!