Initializing bl and src

[Humble_Bee]

I see the original coders initialize bl and src all the time and their code works fine, but I can't figure out how to initialize them myself. How do I add bl or src info into the middle of a function without the game spazzing?

I have this much accomplished:
 

struct block_list *bl;

???

status_get_level(bl)

I just don't know what bl equals so that it will retrieve the data appropriately.

Thanks for any help!

[Litro Endemic]

bl and src usually used as a variable of game object structure pointer (can be player, item, monster, npc, ...), take a function on status.cpp it have details information, on what param stand for, to initialize a blocklist depend on usage or function you want to reach your need. 

/**
 * Applies SC defense to a given status change
 * This function also determines whether or not the status change will be applied
 * @param src: Source of the status change [PC|MOB|HOM|MER|ELEM|NPC]
 * @param bl: Target of the status change
 * @param type: Status change (SC_*)
 * @param rate: Initial percentage rate of affecting bl (0~10000)
 * @param tick: Initial duration that the status change affects bl
 * @param flag: Value which determines what parts to calculate. See e_status_change_start_flags
 * @return adjusted duration based on flag values
 */
t_tick status_get_sc_def(struct block_list *src, struct block_list *bl, enum sc_type type, int rate, t_tick tick, unsigned char flag)

 

Edited July 10, 2021 by Litro Endemic
wrong file mentioned