Merc Release 2.2 Wednesday 24 November 1993 Kahn Hatchet === Commands The central organizing table for skills and spells is cmd_table, an array of type 'struct cmd_type', and is defined in 'interp.c'. The fields of cmd_table are: char * name; The name of the command. Command lookup is by partial matching on the name; the first match (which also meets level restrictions) is used. DO_FUN * do_fun; The function for this command. A 'do_fun' takes two arguments: the character who is issuing the command and the rest of the argument string after the command name. sh_int position; The minimum position for using this command. sh_int level; The minimum level for using this command. This is usually used for restricting certain commands to immortals. sh_int log; The type of logging to perform. LOG_NORMAL commands are logged just when the player is logged. LOG_ALWAYS commands are always logged. LOG_NEVER commands are never logged, even if the player is logged. === How to Add a Command (1) Add a line for the command in 'cmd_table' in 'interp.c'. (2) Add a 'DECLARE_DO_FUN' line for the command function to 'merc.h'. (3) Write the function and put it into an appropriate 'act_*.c' file. (4) Write a help section for the function. See 'help.are' for the format of help entries. We suggest you start your own file of customized help rather than adding into 'help.are'. This will make it easier for you to upgrade to future releases of Merc (which will have upgraded 'help.are' files). Merc supports as many help files as you want. That's ALL there is to it! === Social Commands Social commands add to the atmosphere of the game. The social commands are contained in 'social_table' in 'interp.c'. The fields of this table are: char * name; The name of the social command. char * char_no_arg; The message sent to the character when no argument is given. char * others_no_arg; The message sent to others when no argument is given. char * char_found; The message sent to the character when a victim is found. char * others_found; The message sent to others when a victim is found. char * vict_found; The message sent to the victim when a victim is found. char * char_auto; The message sent to the character when the victim IS the character. char * others_auto; The message sent to others when the victim IS the character. All of these messages are 'act' messages and may use any '$' sequences (the 'act' function is documented in 'act.txt'). If the command is not found in the regular command table, the function 'check_social' looks in 'social_table' for a match. This is the last stop before rejecting the command. Socials without arguments, such as 'hop', may have NULL for the strings sent when arguments are present. === How to Add a Social Command (1) Write a new section into 'social_table' in 'interp.c' with the eight messages in it. The sections need not be alphabetized. That's ALL there is to it.