C++ Game Programming
Basic C++ Lessons
This set of lessons will give you a simple introduction to programming in the C++ language.
Allegro Lessons
This set of lessons will demonstrate how to use the Allegro graphics library to create video games.
Game Source Code
Here you will find source code to several games so that you can see the code in action.
Recommended Books
Here is a list of books which should help you with C++

Multi-threading
So far we've seen how to make games using a while loop that gives each process its own turn, lets look into getting the game to run all these steps at once. Here is some example code: 

#include <iostream>
#include <process.h>

using namespace std;

void myFunction( void* number){
     
     int myNumber = *(int*)number;

     cout << "This is prcosses number: " << myNumber << "\n";
          
     _endthread();

}

int main(int argc, char *argv[])
{
    int tempNum[10];

    for( int i = 0; i <= 9; i++){
         tempNum[i] = i;
         _beginthread( myFunction, 0, (void*)&tempNum[i]);
    }
    
    system("PAUSE");
    return 0;
}
The new commands introduced here are _beginthread() and _endthread(), both included in process.h. _beginthread() takes 3 parameters, first is the function you want to run, in this case myFuntion, second is the size of the stack (just set this to 0), and third, any parameter you want to send. If no parameters are to be sent, the function still must accept a void* parameter, when actually calling _beginthread() set the last parameter to 0. For example: 
void myFunction( void* dummy){ 

    .... 
    code here 
    .... 

} 

_beginthread( myFunction, 0, 0);
Notice the way the parameter is sent, its converted from what ever type it orginally was to void*, this allows any data type to be sent using this function. Also make sure to place the '&' infront of the variable, this will pass the memory address the variable points to instead of the value.

In the function being called by _beginthread() you need to convert any parameters (unless if there are none) back to their original data type. Just replace the int in "*(int*)number;" to whatever datatype you need, and you can continue using the information as usual.

_endthread() will terminate the thread, its not necessary to use it since it will automatically be called once the function called by _beginthread() ends.

Each thread doesn't actually run at the exact same time, processor time will be divided up between the functions, since it happens so fast, it just seems as if they were all running at the same time. When running this code, if the output is not in order, dont worry. Its simply because one or more of the processes were not able to get their output written to screen before the next process starting writting its own.

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