Variable Speed... HELP PLZ

[headless_nader]

im fairly new to coding but im familiar with C++
ok... now on to the problem...
Im trying to make it so when you spin the mouse wheel the speed of the RPG changes.. is possible?
i tried this code

if( MWHEELUP );{
	RPG_SPEED += 10;
}
if( MWHEELDOWN );{
	RPG_SPEED -= 10;
}

but i get syntax errors...

PLZ HELP!

 

[PrivatePanic]

The semicolons after the condition in the if clauses

if( MWHEELUP ) ; {

are wrong

 

[Angry Lawyer]

Is RPG_SPEED defined as an integer?

-Angry Lawyer

 

[headless_nader]

Is RPG_SPEED defined as an integer?

-Angry Lawyer

the line of code is

#define RPG_SPEED 1500

The semicolons after the condition in the if clauses

if( MWHEELUP ) ; {

are wrong

Where should they be?

 

[Angry Lawyer]

That's defining it as a constant...How familiar are you to C++?

Where exactly are you putting this subroutine, anyways?

-Angry Lawyer

 

[PrivatePanic]

if( MWHEELUP ) {
	RPG_SPEED += 10;
}
if( MWHEELDOWN ) {
	RPG_SPEED -= 10;
}

Look! They're gone *gasp*

After the condition should be no ; !

 

[headless_nader]

That's defining it as a constant...How familiar are you to C++?

Where exactly are you putting this subroutine, anyways?

-Angry Lawyer

um... not very...
I know the basic functions and stuff...

i Put it right after the definitions and includes...

i tried this... is this how to set it as an integer?

int RPG_SPEED=1500;


if( MWHEELUP ){
	RPG_SPEED += 10;
}
if( MWHEELDOWN ){
	RPG_SPEED -= 10;
}

 

[headless_nader]

heres the error log if you need it...
Compiling...
weapon_rpg.cpp
c:\mym0d\src\dlls\hl2_dll\weapon_rpg.cpp(36) : error C2059: syntax error : 'if'
c:\mym0d\src\dlls\hl2_dll\weapon_rpg.cpp(36) : error C2143: syntax error : missing ';' before '{'
c:\mym0d\src\dlls\hl2_dll\weapon_rpg.cpp(36) : error C2447: '{' : missing function header (old-style formal list?)
c:\mym0d\src\dlls\hl2_dll\weapon_rpg.cpp(39) : error C2059: syntax error : 'if'
c:\mym0d\src\dlls\hl2_dll\weapon_rpg.cpp(39) : error C2143: syntax error : missing ';' before '{'
c:\mym0d\src\dlls\hl2_dll\weapon_rpg.cpp(39) : error C2447: '{' : missing function header (old-style formal list?)

Build log was saved at "file://c:\mym0d\src\dlls\Debug_hl2\BuildLog.htm"
hl - 6 error(s), 0 warning(s)


---------------------- Done ----------------------

Build: 1 succeeded, 1 failed, 0 skipped



Also I tried some code like this:

int RPG_SPEEDY=150;


if( MWHEELUP ) {
	RPG_SPEEDY += 10;
}
if( MWHEELDOWN ) {
	RPG_SPEEDY -= 10;
}
#define RPG_SPEED RPG_SPEEDY

 

[PrivatePanic]

One remark: You shouldn't give variables names in caps (UPPERCASE), that's a little bit bad style; Capitalized names are used typically only for defines (#define BLAH 4711)

It would help if you could post the whole source (cpp file). But don't post it directly here, use a nopaste service like http://rafb.net/paste/index.html

 

[headless_nader]

heres the code(modified)
http://rafb.net/paste/results/8ujOjb80.html

 

[PrivatePanic]

Well.

You put your code outside of any class / member function definition, at global scope...


Without sounding too harsh, I'd strongly suggest to you to try something simpler at first, and: Do some c++ tutorials!!!

 

[headless_nader]

Well.

You put your code outside of any class / member function definition, at global scope...


Without sounding too harsh, I'd strongly suggest to you to try something simpler at first, and: Do some c++ tutorials!!!

I thought this would be fairly simple... guess not :|

 

[PrivatePanic]

With "something simpler" I didn't mean "some simpler HL2 Mod", I meant "something simpler in C++"

A SDK like the HL2 SDK is a huge pile o' C++, you have to be *very* confident in your C++ skills before trying to mess with the HL2 SDK or similar complex Engines.

 

[Pesmerga]

if( MWHEELUP )
RPG_SPEED += 10;

if( MWHEELDOWN )
RPG_SPEED -= 10;

no need for ; or {}

Edit - the {} are only used for lines of code longer than 1 line. For instance

if(MWHEELDOWN == true) {
int rpg_speed = 100;
rpg_speed -= 10;
MWHEELDOWN = false
}

the {} are used because there's more than one line of code under the if statement.

edit - and btw, if you didn't know that, I dunno what you're doing in the hl2sdk. Try modding doom legacy or something.