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Add 'toggle' cvar operation.

Browse source 
The 'toggle' operation allows toggling a cvar between `0` and `1` or two
custom values.

This code was taken from q2pro.

This is part of issue #414.
This commit is contained in:
Yamagi Burmeister 2019-09-02 17:29:00 +02:00
parent 66ca44e040
commit d1981e7edf
2 changed files with 68 additions and 3 deletions
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11
doc/04_cvarlist.md
View file

@ -257,9 +257,14 @@ it's `+set busywait 0` (setting the `busywait` cvar) and `-portable`
## cvar operations
cvar operations are special commands that allow the manipulation of cvar
values. They can be used for simple scripts and the like.
cvar operations are special commands that allow the programmatic
manipulation of cvar values. They can be used for scripting and the
like.
* **reset <cvar>**: Reset the cvar to it's default value.
* **reset <cvar>**: Reset the given cvar to it's default value.
* **resetall**: Reset all known cvar to their default values.
* **toggle <cvar> [val0] [val1]**: Toggle the given cvar between `0` and
`1`. If the optional arguments `val0` and `val1` are given the given
cvar is toggled between them.

60
src/common/cvar.c
View file

@ -675,6 +675,10 @@ void Cvar_Reset_f(void)
Cvar_Set(var->name, var->default_string);
}
/*
* Resets all known cvar (with the exception of `game') to
* their default values.
*/
void Cvar_ResetAll_f(void)
{
cvar_t *var;
@ -694,6 +698,60 @@ void Cvar_ResetAll_f(void)
}
}
/*
* Toggles a cvar between 0 and 1 or the given values.
*/
void Cvar_Toggle_f(void)
{
cvar_t *var;
int i, argc = Cmd_Argc();
if (argc < 2)
{
Com_Printf("Usage: %s <cvar> [values]\n", Cmd_Argv(0));
return;
}
var = Cvar_FindVar(Cmd_Argv(1));
if (!var)
{
Com_Printf("%s is not a cvar\n", Cmd_Argv(1));
return;
}
if (argc < 3)
{
if (!strcmp(var->string, "0"))
{
Cvar_Set(var->name, "1");
}
else if (!strcmp(var->string, "1"))
{
Cvar_Set(var->name, "0");
}
else
{
Com_Printf("\"%s\" is \"%s\", can't toggle\n", var->name, var->string);
}
return;
}
for (i = 0; i < argc - 2; i++)
{
if (!Q_stricmp(var->string, Cmd_Argv(2 + i)))
{
i = (i + 1) % (argc - 2);
Cvar_Set(var->name, Cmd_Argv(2 + i));
return;
}
}
Com_Printf("\"%s\" is \"%s\", can't cycle\n", var->name, var->string);
}
/*
* Reads in all archived cvars
*/
@ -704,6 +762,7 @@ Cvar_Init(void)
Cmd_AddCommand("reset", Cvar_Reset_f);
Cmd_AddCommand("resetall", Cvar_ResetAll_f);
Cmd_AddCommand("set", Cvar_Set_f);
Cmd_AddCommand("toggle", Cvar_Toggle_f);
}
/*
@ -727,5 +786,6 @@ Cvar_Fini(void)
Cmd_RemoveCommand("reset");
Cmd_RemoveCommand("resetall");
Cmd_RemoveCommand("set");
Cmd_RemoveCommand("toggle");
}