Code Formatting Conventions

1. Use common sense

These are conventions which we try to follow when writing code for ScummVM. They are this way mainly for reasons of taste, however, sticking to a common set of formatting rules also makes it slightly easier to read through our sources. If you want to submit patches, please try to follow these rules.

As such we don't follow these rules slavishly, in certain cases it is OK (and in fact favorable) to stray from them.

In the following examples tabs are replaced by spaces for visual consistency with the Code Formatting Conventions.

2. Hugging braces

Braces in your code should look like the following example:

if (int i = 0; i < t; i++) {
    [...]
} else {
    [...]
}

class Dummy() {
    [...]
}

Did you see the {}'s on that?

3. Tab indents, with tabstop at four spaces

Says it all, really.

4. Whitespaces

Conventional operators surrounded by a space character

a = (b + c) * d;

C++ reserved words separated from opening parentheses by a white space

while (true) {

Commas followed by a white space

someFunction(a, b, c);
int d, e;

Semicolons followed by a space character, if there is more on line

for (int a = 0; b++; c < d)
doSomething(e); doSomething(f);	// This is probably bad style anyway

When declaring class inheritance and in a ? construct, colons should be surrounded by white space

class BusWheel : public RubberInflatable {
(isNight) ? colorMeDark() : colorMeBright();

Indentation level is not increased after namespace clause

namespace Scumm {

byte Actor::kInvalidBox = 0;

void Actor::initActorClass(ScummEngine *scumm) {
    _vm = scumm;
}

} // End of namespace Scumm

5. Switch / Case constructs

switch (cmd) {
case kSaveCmd:
    save();
    break;
case kLoadCmd:
case kPlayCmd:
    close();
    break;
default:
    Dialog::handleCommand(sender, cmd, data);
}

6. Naming

Constants

Basically, you have two choices:

kSomeKludgyConstantName		// notice k prefix

or

SOME_KLUDGY_CONSTANT_NAME

Classes

Mixed case starting with upper case

class MeClass() {

Class members

_ prefixed and in mixed case (Yo! no underscore separators), starting with lowercase.

char *_someVariableName;

Class methods

mixed case, starting with lowercase.

void thisIsMyFancyMethod();