How do I set up a scoreboard to measure how many times a player has killed any passive mob?

Question

Basically what I want is a scoreboard above players heads that counts how many passive mobs they have killed.

I can make an objective that measures this for each individual mob using the following command:

/scoreboard objectives add <mobname>kills minecraft.killed:minecraft.<mobname> "Animal Kills"

But I can't find a command that lets me add all those scores together, so each player has their own individual animal kills score.

Closest I got was adding two of those objectives into a dummy but that doesn't update with each new kill, and also only works for two, and it seems stupid that I would have to stagger dummy variables like that to get a total for all of them.

Is there some way to add more minecraft.killed:minecraft.(mobname) to the initial objective, or is it simply that limited?

Maybe something similar to this:

/scoreboard objectives add <mobname>kills minecraft.killed:minecraft.(mobname1),minecraft.(mobname2),minecraft.(mobname3) "Animal Kills"

Answer 1

Unfortunately, this is going to be pretty tedious.

Like you mentioned, there is no scoreboard to track passive mobs. This is what I would do

###################
# load.mcfunction #
###################

# passive mob kill counter
scoreboard objectives add mobtrack.killed_passive_animal dummy

# Arithmatic
scoreboard objectives add mobtrack.inc dummy
scoreboard players set .mobtrack mobtrack.inc 1

scoreboard objectives add mobtrack.killed_cow minecraft.killed:minecraft_cow
# Repeat for every passive mob

###################
# tick.mcfunction #
###################

# Increment passive mob counter for player
execute as @a[scores={mobtrack.killed_cow=1..}] run scoreboard players add 1

# Decrement cow killed counter for player
execute as @a[scores={mobtrack.killed_cow=1..}] run scoreboard players operation @s mobtrack.killed_cow -= .mobtrack mobtrack.inc

# repeat both commands for every mob

Like I said: tedious. But with a good text editor and a whole lot of patience, this is definitely possible.