nesdev.org

So I've gotten the camera to correctly follow the player and stop moving once it gets to the edge of the room. Thanks. So now, other objects and how they work in relation to the camera is a concept I'm pretty much entirely unfamiliar with. So do rooms keep track of certain points where objects are? ...

If a person jumps a specific height, what is the mathematical formula to calculate how long the jump will take until the person lands on the ground again? (Assuming Earth's gravity.) d = v 0 t + 1/2 a t 2 ? d being height, v 0 being at what speed you initially jump, and a being gravity, or -9.8m/s ...

So I've gotten attributes to be working nicely and smoothly. I can scroll back and forth at will without any graphical errors. Before I start trying to work with multiple entities, I want to be able to make sure that the camera can "follow" a particular sprite, which will become the player...

What's the deal with color $0D of the PPU's palette?

Since attributes need to be drawn a column at a time, how exactly do I go about drawing them vertically? Increment-32 of course only works for nametables.

Well I can now scroll in both directions! Thank you guys so much for your help. Just to make sure I have everything right, here are my routines: http://pastebin.com/ZyY91VVQ DrawNewColumn is the same, only the subroutine CameraCalculatePPUAddr is called from within it. Now before I dive into working...

I know I probably won't like it (at least not at first) but one of these days I need to try LISP

Ok, I thought I could just use the carry flag, I guess I just confuzzled myself. Going off on this tangent, Z80 seems like it'd be really fun to learn (as a lot of the arcade classics used the CPU, and it'd be cool to understand their source code. I came across the original Z80 source for pac-man a ...

So Tokumaru, are you saying I should use the XOR method you described above to check when the low byte of the camera has passed 255? (aka when at a new "screen"?) In that case, I'd want to save the high byte of camerax to camerax_old, xor the high byte of camerax with that of camerax_old, ...

So how many bits should camera be? If I have 64 columns that make up 4 screens, 64 × 16 = 1,024, or 10 bits. If that's the case, how do i divide by 16 (LSRing 4 times) on a value that's more than 8 bits? And so you're saying each frame I should save what the scroll value was last frame, XOR it with ...

Well fixing Issue #1 was easy enough, thank you Tokumaru. The three routines in the main loop I made subroutines, and made them only get called in ReadLeft and ReadRight, and only swap nametables when the carry flag for scroll is cleared or set, respectively.

Hey it's been a while. School started again, had to start applying for colleges and all that, so this had to kinda get pushed to the side. But I've decided I want to finally try and make a working camera system and scrolling engine, now that I'm a bit more comfortable with a bunch of different conce...

What I've learned through a couple computer science courses is that pretty much every high level language is the same. If statements, if-else statements, for loops, while loops, switch statements, primitive data types, condition testing, etc. It's all pretty much exactly the same. So if you know ho...

It's not just the Hello World program that counts, it's whether you understand it or not, I think. Of course, I haven't a position to say that but really, just copy/pasting isn't coding, learning is doing your own mods to the stuff and write the code. Also, I have a couple of questions about the de...

Why is it that the compiler seems to be the ugliest part of any programming language?