Set cvars directly from Lua

Silly COM_BufInsertText.

src/lua_consolelib.c

@@ -432,6 +432,46 @@ static int lib_cvFindVar(lua_State *L)
 	return 1;
 }
 
+static int CVarSetFunction
+(
+		lua_State *L,
+		void (*Set)(consvar_t *, const char *),
+		void (*SetValue)(consvar_t *, INT32)
+){
+	consvar_t *cvar = (consvar_t *)luaL_checkudata(L, 1, META_CVAR);
+
+	switch (lua_type(L, 2))
+	{
+		case LUA_TSTRING:
+			(*Set)(cvar, lua_tostring(L, 2));
+			break;
+		case LUA_TNUMBER:
+			(*SetValue)(cvar, (INT32)lua_tonumber(L, 2));
+			break;
+		default:
+			return luaL_typerror(L, 1, "string or number");
+	}
+
+	return 0;
+}
+
+static int lib_cvSet(lua_State *L)
+{
+	return CVarSetFunction(L, CV_Set, CV_SetValue);
+}
+
+static int lib_cvStealthSet(lua_State *L)
+{
+	return CVarSetFunction(L, CV_StealthSet, CV_StealthSetValue);
+}
+
+static int lib_cvAddValue(lua_State *L)
+{
+	consvar_t *cvar = (consvar_t *)luaL_checkudata(L, 1, META_CVAR);
+	CV_AddValue(cvar, (INT32)luaL_checknumber(L, 2));
+	return 0;
+}
+
 // CONS_Printf for a single player
 // Use 'print' in baselib for a global message.
 static int lib_consPrintf(lua_State *L)
@@ -472,6 +512,9 @@ static luaL_Reg lib[] = {
 	{"COM_BufInsertText", lib_comBufInsertText},
 	{"CV_RegisterVar", lib_cvRegisterVar},
 	{"CV_FindVar", lib_cvFindVar},
+	{"CV_Set", lib_cvSet},
+	{"CV_StealthSet", lib_cvStealthSet},
+	{"CV_AddValue", lib_cvAddValue},
 	{"CONS_Printf", lib_consPrintf},
 	{NULL, NULL}
 };