Topics by Labdabeta

I was working on a project when I thought that maybe a ::. operator would look funny in some code. Just for fun I typed that into the global scope area like this: [CODE]::. int main() { //etc...[/CODE] and my code completion software said too many results to display. My …

I have this code for AlphaBeta implementation and have created versions of the required interfaces that work perfectly (I have debugged them quite thoroughly). Unfortunately my algorithm keeps returning an empty vector and score of 0. Here is the code: [CODE]#include <vector> #include <limits.h> using namespace std; typedef vector<unsigned char> …

How can I get the coordinates of the output of a truetype font. I need to write a function like so: [CODE]struct CartesianCoord{float x,float y}; CartesionCoord *printfont(const char *filename,char ch, int &len) { /*Read the font in filename.ttf and convert it to a set of vertices describing the resulting shape. …

I have a function that takes a reference to an interface class as a parameter. I have created a derived class from the interface class, but when I try to call the function with an instance of my derived class as an argument I get a compiler error saying "error: …

I am getting extra garbage at the end of the string returned by this function. Why? [CODE]char *read(char *fname) { FILE *file=fopen(fname,"r"); printf("Opening input file...\n"); if (file==NULL) return NULL; int length=0; char *ret=new char[length]; while (!feof(file)) { char ch=fgetc(file); char *temp=new char[length+1]; for (int i=0; i<length; i++) temp[i]=ret[i]; delete[]ret; if …

I am really confused as to the purpose of the unary + operator. What in the world does it do? I have tested it and it doesn't return the absolute value. Does it just return the operand? And if so what purpose is it?! (I mainly care about integer types)

How do you show code on a website? Right now I define a bunch of CSS styles called Comment, Preprocessor, Keyword, etcetera. Then make a two column table, make the left column line numbers and and the right column each row has a line of code. Then I manually go …

What is the equivalent of tan-1(theta) [inverse tangent] in Java?

Is it possible to define a union at creation. ie: [CODE]union Colour { unsigned int i; char c[4]; struct{ char a; char r; char g; char b; }col; }Black(0xFF000000),White(0xFFFFFFFF),Red(0xFFFF0000),Green(0xFF00FF00),Blue(0xFF0000FF)/*etc...*/;[/CODE]

How long can an array be, and how can I extend that length?

Is it possible to put a gap in a class definition? IE: [CODE]class a; class b { private: a test; public: a getA(){return test;} }; class a { private: int i; public: a(int i):i(i){} a operator+(int o)const{return a(i+o);} }; class b continued?//what? how? { void outputA(){cout<<a;} };[/CODE] This is just …

What does it mean if my opengl objects are opaque from one side and translucent from another?

here is the question, what does str(X) become [CODE]#define str_(X) #X #define str(X) str_(X)[/CODE] when X is a string? is it ""string"" or "\"string\""?

I am extremely confused about libraries and have been having trouble understanding them with google. Basically I want to create a library so that I can use a bunch of functions from another file without all of the libraries' contents being seen. EG: library code: [CODE]class test { private: int …

I have this problem: [CODE]struct Position { float x; float y; float z; }; bool CheckCollision(Position *vertices, int numvertices, Position start, Position end) { //return true if there was NOT a collision with the polygon defined by the vertices and the vector defined by the two positions. }[/CODE] I dont …

I am still having major trouble with my openGL model program. The big issue is that I cannot figure out how to debug it since I am saving the important data to the graphics chip using vertex buffer objects (VBOs) so at least as far as I can tell, I …

How do I do 2D opengl? I need to be able to put stuff up on the screen so that it is not rendered in three dimensions, and I need the 3d stuff to still be 3d behind it.

I know that this [ICODE]#define QUOTE(X) #X[/ICODE] turns X into a c-string version of whatever is passed to it. my question is if there is a way to do this in reverse ie: [ICODE]#define DEQUOTEANDCALLFUNCTIONORCLASSWITHGIVENNAME(X) (X#)()[/ICODE] is this possible?

I am looking to make a 3D game, I have made plenty of fun ones in 2D using SDL but have yet to attempt a 3D (fps style) game. Does anybody know either a way to do 3D with SDL, or some other similar or easy to use library that …

I am making a program and I want to be able to determine the refresh rate of the monitor somehow (to limit an fps cap). I am using windows API. Is there anyway to access this?

Just wondering which of these functions would be faster (or if they would be the same): [CODE]class MyClass { private: bool MyVar; public: MyClass &Function1(bool MyVar); MyClass &Function2(bool MyVar); MyClass &Function3(bool var); }; MyClass &MyClass::Function1(bool MyVar) { this->MyVar=MyVar; cout<<MyVar; return *this; } MyClass &MyClass::Function2(bool MyVar) { this->MyVar=MyVar; cout<<this->MyVar; return *this; …

Code::Blocks isn't working. I recently reinstalled to get a newer version and when I hit build I get the following error: [CODE]mingw32-g++.exe -Wall -g -I"C:\Program Files\CodeBlocks\MinGW\include" -c D:\Programming\C++\TESTINGOPENGL\main.cpp -o obj\Debug\main.o Execution of 'mingw32-g++.exe -Wall -g -I"C:\Program Files\CodeBlocks\MinGW\include" -c D:\Programming\C++\TESTINGOPENGL\main.cpp -o obj\Debug\main.o' in 'D:\Programming\C++\TESTINGOPENGL' failed.[/CODE] Please help!

I need to make a function: [CODE]void GenerateNormal(float x[3], float y[3], float z[3], float &ox, float &oy, float &oz) { //Calculate coordinates for a glNormal and return them ox,oy and oz }[/CODE] I have a sinking feeling that the math will be quite difficult. Can anybody help me?

How can I send an email through C++. I need to make the following: [CODE]bool SendMail(char* from, char* to, char* title, char* msg) { //What now? //Return true on success, false otherwise }[/CODE]

I decided to post this problem in a new thread. I have a simple program in OpenGL and it doesn't work. What happens is that a transparent window forms and when you hit the 'X' it says that the Release of the Device Context and Rendering Context failed. Here is …

I have the following trig functions, but I am wondering if there is a faster algorithm that I could implement: [CODE]static const double SINMIN=0.0009999998333333; static const double COSMIN=0.9999995000000417; static const double TANMIN=0.0010000003333334; static const double E=2.718281828459045235360; static const double PI=3.14159265358979323846; static const double MINVAL=0.01; double sin(double ax) { double x=aabs(ax); …

I need a way to do the following and I cannot think of one, this is what I have so far: [CODE]typedef Obj2*(*Reaction)(); class Obj1 { public: Reaction reaction; }; class Obj2 { public: unsigned int numobj1; Obj1 *objects; }; class Obj3:Obj2 {};[/CODE] Can you find any way of doing …

I am making a diplomacy tool, for the board game diplomacy. I need to make a map of each territory. I have a 75 #define MAP_"NAME" lines but I don't know how to set them to a mask value that can be checked since I don't know any 75-bit or …

Is it possible to overload an operator for a built-in type? And if so what is it's syntax? EG: [CODE]//Use of overloaded operator^ for types double and double (assuming it is overloaded for exponent): double a=10.0; double b=2.5; double pow=a^b;//pow is approximately 316.22....[/CODE]

I am having trouble with a program that I am writing. I cannot seem to be able to destroy a window. I know the DestroyWindow function but it only works on windows that my application owns. Is there any way to destroy a window that is not owned by my …

I have asked this question before on a different forum without success. I would like to know how to do templated type conversions for a class. The syntax is getting me though. Here is what I want: [CODE]class Thing { public: template <typename T> T operator T(); }[/CODE] This would …

Quick question (hopefully), how do I save an SDL_Surface image to a file?

I need a few helps for some things that I just cannot get the syntax of! (I need these, and if you don't believe me I can post the reason) 1) Creating a function within a function 2) Creating a class within a function 3) Declaring a template function outside …

I am working on making a 'safetype' abstract class, which will have a complete set of pure virtual operator overloads to help make sure that a class inherited from it is safe to pass to virtual any function. The problem is that I don't know the syntax of a pure …

I am working on making an error header file and this is what I have: [CODE]#include <stdio.h> #include <stdlib.h> #include <iostream> #include <sstream> #include <string> #define VANARGS(n1,n2,n3,n4,n5,n6,n7,n8,n9,n10,n11,n12,n13,n14,n15,n16,n17,n18,n19,n20,n21,n22,n23,n24,n25,n26,n27,n28,n29,n30,n31,n32,n33,n34,n35,n36,n37,n38,n39,n40,n41,n42,n43,n44,n45,n46,n47,n48,n49,n50,n51,n52,n53,n54,n55,n56,n57,n58,n59,n60,n61,n62,n63,N,...) N #define __VA_NARGS__(...) (VANARGS(__VA_ARGS__,63,62,61,60,59,58,57,56,55,54,53,52,51,50,49,48,47,46,45,44,43,42,41,40,39,38,37,36,35,34,33,32,31,30,29,28,27,26,25,24,23,22,21,20,19,18,17,16,15,14,13,12,11,10,9,8,7,6,5,4,3,2,1,0)) #define ERROR(...) (\ (__VA_NARGS__(__VA_ARGS__)==0)?"NONE":(\ (__VA_NARGS__(__VA_ARGS__)==1)?(_1(__VA_ARGS__,63,62,61,60,59,58,57,56,55,54,53,52,51,50,49,48,47,46,45,44,43,42,41,40,39,38,37,36,35,34,33,32,31,30,29,28,27,26,25,24,23,22,21,20,19,18,17,16,15,14,13,12,11,10,9,8,7,6,5,4,3,2,1,0)):(\ (__VA_NARGS__(__VA_ARGS__)==2)?(_2(__VA_ARGS__,63,62,61,60,59,58,57,56,55,54,53,52,51,50,49,48,47,46,45,44,43,42,41,40,39,38,37,36,35,34,33,32,31,30,29,28,27,26,25,24,23,22,21,20,19,18,17,16,15,14,13,12,11,10,9,8,7,6,5,4,3,2,1,0)):(\ (__VA_NARGS__(__VA_ARGS__)==3)?(_3(__VA_ARGS__,63,62,61,60,59,58,57,56,55,54,53,52,51,50,49,48,47,46,45,44,43,42,41,40,39,38,37,36,35,34,33,32,31,30,29,28,27,26,25,24,23,22,21,20,19,18,17,16,15,14,13,12,11,10,9,8,7,6,5,4,3,2,1,0)):(\ (__VA_NARGS__(__VA_ARGS__)==4)?(_4(__VA_ARGS__,63,62,61,60,59,58,57,56,55,54,53,52,51,50,49,48,47,46,45,44,43,42,41,40,39,38,37,36,35,34,33,32,31,30,29,28,27,26,25,24,23,22,21,20,19,18,17,16,15,14,13,12,11,10,9,8,7,6,5,4,3,2,1,0)):(\ (__VA_NARGS__(__VA_ARGS__)==5)?(_5(__VA_ARGS__,63,62,61,60,59,58,57,56,55,54,53,52,51,50,49,48,47,46,45,44,43,42,41,40,39,38,37,36,35,34,33,32,31,30,29,28,27,26,25,24,23,22,21,20,19,18,17,16,15,14,13,12,11,10,9,8,7,6,5,4,3,2,1,0)):(\ (__VA_NARGS__(__VA_ARGS__)==6)?(_6(__VA_ARGS__,63,62,61,60,59,58,57,56,55,54,53,52,51,50,49,48,47,46,45,44,43,42,41,40,39,38,37,36,35,34,33,32,31,30,29,28,27,26,25,24,23,22,21,20,19,18,17,16,15,14,13,12,11,10,9,8,7,6,5,4,3,2,1,0)):(\ (__VA_NARGS__(__VA_ARGS__)==7)?(_7(__VA_ARGS__,63,62,61,60,59,58,57,56,55,54,53,52,51,50,49,48,47,46,45,44,43,42,41,40,39,38,37,36,35,34,33,32,31,30,29,28,27,26,25,24,23,22,21,20,19,18,17,16,15,14,13,12,11,10,9,8,7,6,5,4,3,2,1,0)):(\ (__VA_NARGS__(__VA_ARGS__)==8)?(_8(__VA_ARGS__,63,62,61,60,59,58,57,56,55,54,53,52,51,50,49,48,47,46,45,44,43,42,41,40,39,38,37,36,35,34,33,32,31,30,29,28,27,26,25,24,23,22,21,20,19,18,17,16,15,14,13,12,11,10,9,8,7,6,5,4,3,2,1,0)):(\ (__VA_NARGS__(__VA_ARGS__)==9)?(_9(__VA_ARGS__,63,62,61,60,59,58,57,56,55,54,53,52,51,50,49,48,47,46,45,44,43,42,41,40,39,38,37,36,35,34,33,32,31,30,29,28,27,26,25,24,23,22,21,20,19,18,17,16,15,14,13,12,11,10,9,8,7,6,5,4,3,2,1,0)):(\ (__VA_NARGS__(__VA_ARGS__)==10)?(_10(__VA_ARGS__,63,62,61,60,59,58,57,56,55,54,53,52,51,50,49,48,47,46,45,44,43,42,41,40,39,38,37,36,35,34,33,32,31,30,29,28,27,26,25,24,23,22,21,20,19,18,17,16,15,14,13,12,11,10,9,8,7,6,5,4,3,2,1,0)):(\ (__VA_NARGS__(__VA_ARGS__)==11)?(_11(__VA_ARGS__,63,62,61,60,59,58,57,56,55,54,53,52,51,50,49,48,47,46,45,44,43,42,41,40,39,38,37,36,35,34,33,32,31,30,29,28,27,26,25,24,23,22,21,20,19,18,17,16,15,14,13,12,11,10,9,8,7,6,5,4,3,2,1,0)):(\ (__VA_NARGS__(__VA_ARGS__)==12)?(_12(__VA_ARGS__,63,62,61,60,59,58,57,56,55,54,53,52,51,50,49,48,47,46,45,44,43,42,41,40,39,38,37,36,35,34,33,32,31,30,29,28,27,26,25,24,23,22,21,20,19,18,17,16,15,14,13,12,11,10,9,8,7,6,5,4,3,2,1,0)):(\ (__VA_NARGS__(__VA_ARGS__)==13)?(_13(__VA_ARGS__,63,62,61,60,59,58,57,56,55,54,53,52,51,50,49,48,47,46,45,44,43,42,41,40,39,38,37,36,35,34,33,32,31,30,29,28,27,26,25,24,23,22,21,20,19,18,17,16,15,14,13,12,11,10,9,8,7,6,5,4,3,2,1,0)):(\ (__VA_NARGS__(__VA_ARGS__)==14)?(_14(__VA_ARGS__,63,62,61,60,59,58,57,56,55,54,53,52,51,50,49,48,47,46,45,44,43,42,41,40,39,38,37,36,35,34,33,32,31,30,29,28,27,26,25,24,23,22,21,20,19,18,17,16,15,14,13,12,11,10,9,8,7,6,5,4,3,2,1,0)):(\ (__VA_NARGS__(__VA_ARGS__)==15)?(_15(__VA_ARGS__,63,62,61,60,59,58,57,56,55,54,53,52,51,50,49,48,47,46,45,44,43,42,41,40,39,38,37,36,35,34,33,32,31,30,29,28,27,26,25,24,23,22,21,20,19,18,17,16,15,14,13,12,11,10,9,8,7,6,5,4,3,2,1,0)):(\ …

I made a header file to convert strings to numbers of base X. That is I want: [CODE]int num=B<16,int>("FFF");[/CODE] To equal: [CODE]int num=0xFFF;[/CODE] Here is the code so far: [CODE]#include <string> int numb(char in) { if (in>='0'&&in<='9') return in-'0'; else if (in>='a'&&in<='z') return in-'a'; else if (in>='A'&&in<='Z') return in-'A'; } …

Hello, I have decided to make a timer program on my computer to limit the amount of time that I game. Anyways, I have it working fine with a small borderless window in the top left of the screen that ticks down and when it gets to 0 it sounds …

I have made a header file for SDL GUI applications. I was testing the SDLGame::Draw() function when I got a SigSegV fault. The fault occurs in different locations each time I run the program. Also sometimes instead of a SigSegV fault I get a SigTrap fault. Here is the code …