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Control Flow

2 (2.2%)

Arrays, Strings, Pointers, and References

8 (9%)

Functions

4 (4.5%)

Basic object-oriented programming

30 (33.7%)

A bit more advanced OOP (Composition, Operator overloading, Inheritance, Virtual Functions)

18 (20.2%)

Templates

8 (9%)

Other (Explain)

4 (4.5%)

Working with files?  (Streams)

15 (16.9%)

Total Members Voted: 89

[qwertyuiopas]

The problem with system("pause") is that it requests the console it is running in to pause for it. Other uses of system() are certainly platform dependant and probably better to avoid. I gave two pieces of code: One is a .bat file that would run the program and pause it, emulating the IDE, the other is a function that would pause the program, though not quite as well as system("pause").

[IHateOutside]

I meant the function. Well, I'm tired so off to bed right now. Will sort it out when I get up later.

[ed boy]

This might be outside the scope of this thread (and if it is, can you say and I'll create a new thread), but does anybody know where I can find some 3d terrain generation algorithms?

I want to create a script that will output an array of voxels that will represent a planet. It would be divided up into three main parts: atmosphere, surface, and magma. The algorithms that would be used for the atmosphere and magma would be simple: just spheres, with all undefined voxels inside those spheres defined as atmosphere/magma. However, the surface is proving to be a different matter entirely. Although I could just go for a spherical surface, that would be boring and uninteresting.

I have found other algorithms in the past, and they have given very nice results, but they have been not quite what I want. Most algorithms start with a two-dimensional area and then extrude the points perpendicular to the original area. This gives very nice results, but it only be satisfactory for a small part of the planet's surface, not the whole thing.

[alway]

http://www.infinity-universe.com/Infinity/index.php?option=com_content&task=blogcategory&id=0&Itemid=47&limit=6&limitstart=6
Those might help; quite a few are about terrain generation on a spherical planet IIRC. Particularly the early ones (page six and up).

[eerr]

This might be outside the scope of this thread (and if it is, can you say and I'll create a new thread), but does anybody know where I can find some 3d terrain generation algorithms?

I want to create a script that will output an array of voxels that will represent a planet. It would be divided up into three main parts: atmosphere, surface, and magma. The algorithms that would be used for the atmosphere and magma would be simple: just spheres, with all undefined voxels inside those spheres defined as atmosphere/magma. However, the surface is proving to be a different matter entirely. Although I could just go for a spherical surface, that would be boring and uninteresting.

I have found other algorithms in the past, and they have given very nice results, but they have been not quite what I want. Most algorithms start with a two-dimensional area and then extrude the points perpendicular to the original area. This gives very nice results, but it only be satisfactory for a small part of the planet's surface, not the whole thing.

be careful, filling 3d areas is sort of stubbing the line into calculus.

how do you want the magma deposits and such to vary?

[Normandy]

Blech. No help whatsoever on how to translate images? Not even from qwertyuiopas?

@eerr:
Filling 3d areas is most definitely not calculus, I'm not sure where you're getting this from, eerr. Name your sources. "Filling" 3d areas is much the same as filling 2d areas (although the definition of 'filling' here is rather vague, and some further clarification is needed) - doing most things in 3d is usually just a simple extension of 2d geometries.

[alfie275]

Idea: Diamond square algorithm with wrapping, each value being how far it is from the centre of the sphere.

[alway]

Yep, as stated, simple concentric 3D spheres are easy:
distance = GetDistance(planet.center, voxel.position);
if(distance<x and distance>y)
voxel.type = z;
else if...

No calculus involved. More complex than simple spheres and it gets more difficult, since distance from center and position on the surface must be taken into account and thus a coordinate system of some sort on the surface must be used. And then since the patterning desired on the surface is meant to represent that of the real world, one must figure out how the form of the features will be. Still no calc there unless your terrain features are really odd.

[Blacken]

Idea: Diamond square algorithm with wrapping, each value being how far it is from the centre of the sphere.

Noise functions will generally be faster and create more realistic-looking terrain. Diamond-square has few correct, or even good, use cases.

Layered noise functions are the simplest, fastest way to do a decent-looking terrain generator.

[eerr]

Blech. No help whatsoever on how to translate images? Not even from qwertyuiopas?

@eerr:
Filling 3d areas is most definitely not calculus, I'm not sure where you're getting this from, eerr. Name your sources. "Filling" 3d areas is much the same as filling 2d areas (although the definition of 'filling' here is rather vague, and some further clarification is needed) - doing most things in 3d is usually just a simple extension of 2d geometries.

Oh

[alway]

Will a pointer set to point at an instance of a class in a vector work after said vector has members added or removed? Because my pointers are spontaneously combusting for some reason.

[eerr]

Reallocating vectors involves resizing arrays, and frequently allocating them to new places.

That is to say, your pointers are not safe after adding or removing members to vectors.

[alway]

Awesome, problems (mostly) solved, thanks!

[Outcast Orange]

I've searched Google pretty hard, and I consider myself a master at it.

I need to find a way to find out the current text color in the windows console.

I want my function to print text in a certain color, then return it to the previous color.
I am already using windows.h for resizing and stuff, so I may as well use it to get console attributes.
Does anyone have any experience with this, or know of a link to a good resource?

EDIT: I've considered using external values if nothing else is found.

[Blacken]

Ouch. Google mastery, of all things, comes up short? How terrible! A "Google master" can't find it--

http://www.google.com/search?sourceid=chrome&ie=UTF-8&q=windows.h+get+current+console+color
http://www.dreamincode.net/code/snippet4313.htm

--oh. First search, fourth result. Not even below the fold.

Hell. I guess I'm the Google master here. Does it come with a funny hat, or just a lack of perspective?