Writing Advanced Modules In C

This tutorial explains how to write advanced modules in C. It is assumed you know how to code and are familiar with how the ASSS code works.

This tutorial is a continuation of Writing Modules In C.

Some useful references:

http://qnxcs.unomaha.edu/help/product/neutrino/lib_ref/summary.html

http://www.cplusplus.com/reference/

http://www.cprogramming.com/tutorial.html

Passing Data To Timers

typedef struct ThisIsData
{
	Player *p;
	int number;
} ThisIsData;

local int timerfunc(void *vp) //vp is void pointer, just an address that can point anywhere
{
	ThisIsData *tid=(ThisIsData*)vp; //we know it points to our data
	
	if(tid->number == 10)
	{
		//if it worked anything in here will work too
	}

	int returnValue=0; //return 1 if you want timer to run again, or 0 if you want it to be removed
	if(!returnValue) afree(tid); //if zero, free the data we have previously allocated
	return returnValue;
}

anotherfunction()
{
	ThisIsData *tid=amalloc(sizeof(ThisIsData)); //we must allocate memory because anything in this function is destroyed when it ends

	tid->number=10

	//now set timer to activate in 1000 centiseconds, then repeat every 100.
	//we are also sending the address of the memory we just allocated.
	ml->SetTimer(timerfunc,1000,100,tid,0);
}

Passing Multiple Arguments To Commands

Since the words are read one by one against the whole list, they can be in any order!

// define macros for comparing strings that work on linux
#ifndef WIN32
//a case insensitive comparison that returns 0 if both are the same
#define stricmp(x,y) (strcasecmp(x,y) == 0)
//a case insensitive comparison that returns 0 if both are the same for the first N letters
#define strnicmp(x,y,n) (strncasecmp(x,y,n) == 0)
#endif

local void examplecommand(const char *command, const char *params, Player *p, const Target *t)
{
	chat->SendMessage(p,"Sentence: %s",params);
	
	char buf[255];
	char *word=NULL;
	const char *tmp=NULL;
	while(strsplit(params," ,:",buf,sizeof(buf),&tmp))
	{
		word=buf; //move start of word to beginning
		chat->SendMessage(p,"Word: %s",word); //the word currently being reviewed

		if(strnicmp(word,"a=",2)) //remember, the N means it is checking only first 2 letters
		{
			//do stuff if first 2 letters of word are 'a' then '='

			word+=2; //like move start of word 2 letters forward
			int check=atoi(word); //then read a number
		}
		else if(strnicmp(word,"bc=",3)) //3 this time
		{
			//do stuff if first 3 letters of word are 'b' then 'c' then '='

			word+=3; //make sure you move it 3 letters and not 2
			int check=atoi(word); //then read a number
		}
		else if(stricmp(word,"-de")) //no N, it just checks the whole thing
		{
			//do stuff if word is "-de"
		}
	}
}

Creating Callbacks

Write me!

//example code goes here

Creating Interfaces

Cover overwriting existing interfaces to replace old modules. Write me!

//example code goes here

Sending Packets To Players

Cover position packets, weapon packets, clientset stuff, etc. Write me!

//example code goes here

Using Advisors

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//example code goes here

Creating Advisors

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//example code goes here