Heya all. I started a new mud based on ds2.1a18 and the first thing i noticed is the lack of dynamic prompts. the FAQ says that it will be done in the future. I personally cant stand not having them, so i implemented them
And here is what you have to do to make them yourself.
First of all lets add something to /lib/body.c :
/* Anfauglir's prompt changes */
private string user_prompt;
/* Anfauglir end */
Place this bit at the beginning of the file, under other variables
On my mud it looks like this now:
...
#define COLLAPSE_AT 10.0
private int HealthPoints, MagicPoints, ExperiencePoints, QuestPoints;
private int melee;
private int Alcohol, Caffeine, Food, Drink, Poison, Sleeping, DeathEvents;
private float StaminaPoints;
private string Torso, Biter;
private mapping Fingers, Limbs, MissingLimbs;
private static int Dying, LastHeal, Encumbrance;
private static function Protect;
private static mapping WornItems;
private static class MagicProtection *Protection;
static private int HeartModifier = 0;
private static string PoliticalParty, BodyComposition;
private static int Pacifist, rifleshot_wounds, gunshot_wounds, globalint1;
private static int Size, Respiration, BodyType;
string *ExtraChannels;
mixed Agent;
/* Anfauglir's prompt changes */
private string user_prompt;
/* Anfauglir end */
string GetRace();
static void create() {
PoliticalParty = "UNDECIDED";
rifleshot_wounds = 0;
gunshot_wounds = 0;
...
After we have the place holder for the prompt, we need to be able to set it and to read it.
So i added two new functions to body.c (you can just paste them to the end of the file. thats what i did)
/* Anfauglir's prompt changes */
string QueryPrompt(){
return user_prompt;
}
int SetPrompt(string prompt){
user_prompt = prompt;
return 1;
}
And since we are good programmers, we will add their prototypes to body.h:
(that is /lib/include/body.h)
/* Anfauglir's prompt changes */
string QueryPrompt();
int SetPrompt(string prompt);
Ok. So we have the easy part done. Now comes the hard part - /lib/nmsh.c
First find the function reset_prompt (close to the end of the file) and replace it with this:
void reset_prompt() {
Prompt =(string)this_object()->QueryPrompt();
if(!stringp(Prompt)) Prompt = "Prompt screwey> ";
}
Second step is the write_prompt function. From what i managed to see and understand, the driver itself calls that function each time we need to see the prompt. And this is how it looks on my mud:
nomask string write_prompt() {
string tmp, ret;
int x, y;
if( (y = query_ed_mode()) != -1 ) {
if( !y ) {
if( creatorp() ) ret = ":";
else
ret = "\tQ)uit without saving, save and ex)it, h)elp\nCommand: ";
}
else if( y == -2 ) ret = "Help: ";
else ret = "*\b";
message("prompt", ret, this_object());
return ret;
}
if (Prompt == ">") Prompt = " >"; //stupid hack. for some reason the driver dislikes ">" as a single char and eats it.
if((ret = Prompt) == DEFAULT_PROMPT) {
message("prompt", ret, this_object());
return ret;
}
if(ret){
while((x = strsrch(ret, "$")) != -1) {
if(x == strlen(ret) -1) break;
switch(ret[x+1]) {
case 'D':
if(!creatorp(this_object())) break;
if(sscanf(query_cwd(), user_path(GetKeyName())+"%s",
tmp)) tmp = "~"+tmp;
else tmp = query_cwd();
ret = replace_string(ret, "$D", tmp);
break;
case 'V': case 'v':
if(!creatorp(this_object())) break;
if(GetInvis()) {
ret = replace_string(ret, "$V", "INVIS");
ret = replace_string(ret, "$v", "invis");
}
else if(hiddenp(this_object())) {
ret = replace_string(ret, "$V", "HID");
ret = replace_string(ret, "$v", "hid");
}
else {
ret = replace_string(ret, "$V", "");
ret = replace_string(ret, "$v", "");
}
break;
case 'H':
ret = replace_string(ret, "$H", sprintf("%d", this_player()->GetMaxHealthPoints()));
break;
case 'h':
ret = replace_string(ret, "$h", sprintf("%d", this_player()->GetHealthPoints()));
break;
case 'M':
ret = replace_string(ret, "$M", sprintf("%d", this_player()->GetMaxMagicPoints()));
break;
case 'm':
ret = replace_string(ret, "$m", sprintf("%d", this_player()->GetMagicPoints()));
break;
case 'S':
ret = replace_string(ret, "$S", sprintf("%d", to_int((float)this_player()->GetMaxStaminaPoints())));
break;
case 's':
ret = replace_string(ret, "$s", sprintf("%d", this_player()->GetStaminaPoints()));
break;
case 'C':
ret = replace_string(ret, "$C", sprintf("%d", this_player()->GetMaxCarry()));
break;
case 'c':
ret = replace_string(ret, "$c", sprintf("%d", this_player()->GetCarriedMass()));
break;
default:
ret = replace_string(ret, ret[x..x+1], "");
break;
}
}
}
message("prompt", ret, this_object());
return ret;
}
It is actually pretty similar to the existing function in the file, and you can change it to display anything you want your player to see. I made it rather generic to display values from existing player file.
(notice the comment i made about driver eating > if its a single char in the prompt. If anyone makes a workaround i will be more than happy)
Last part is the prompt command that everyone can use to set their prompt:
Just make a file in /cmds/players and paste the code inside, reboot the mud and pray that it works
As you can see in the command itself, i prohibit regular players from setting $D $V and $v in their prompt. If
they manage to get it in there. they will cause runtimes.
/* Anfauglir's prompt implementation for ds */
#include <config.h>
#include <daemons.h>
#include <lib.h>
int cmd(string str) {
string p, *p1, tmp ;
int x,y;
p = str;
x=0;
y=1;
if (!p){
message("info","Your current prompt is: "+this_player()->QueryPrompt(),this_player());
return 1;
}
if(p){
if (x=strsrch(p,"$V") != -1 || x=strsrch(p,"$D") != -1 || x=strsrch(p,"$v") != -1 )
if (!creatorp(this_player())){
message("info","Some of the options used are for creators only.",this_player());
y = 0;
}
}
if (y > 0){
this_player()->SetPrompt(str);
this_player()->reset_prompt();
}
return 1;
}
void help(){
string tmp_str;
tmp_str = "Syntax: prompt <prompt options>\n\n";
tmp_str +="Valid prompt options are:\n";
tmp_str +="$H - Maximum health points\n";
tmp_str +="$h - current health points\n";
tmp_str +="$M - Maximum magic points\n";
tmp_str +="$m - Current magic points\n";
tmp_str +="$S - Maximum stamina points\n";
tmp_str +="$s - current stamina points\n";
tmp_str +="$C - Maximum weight to carry\n";
tmp_str +="$c - Current carried weight\n\n";
if (creatorp(this_player())){
tmp_str +="For creators and above:\n";
tmp_str +="$V - shows your vis/invis status\n";
tmp_str +="$D - current directory\n";
}
message("help",tmp_str, this_player());
}
Have fun with the prompts
