Before you begin,
Use a scoreboard to detect kills:
/scoreboard objectives add kills playerKillCount
One for karma:
/scoreboard objectives add karma dummy Karma
One for deaths:
/scoreboard objectives add death dummy deathCount
And one for a time since last kill:
/scoreboard objectives add timeSinceKill dummy
Finally, have a clock with the following command:
/scoreboard players add @a timeSinceKill 1
Now that the scoreboards are set up, let's begin.
For the first section of code:
if(playerkillsplayer = true){
variable + 1
}
Have the following three commands in a 20 tick clock, making sure that the third command is activated last:
/scoreboard players add @a[score_kills_min=1] karma 1
/scoreboard players set @a[score_kills_min=1] timeSinceKill 0
/scoreboard players set @a kills 0
For the second section:
if(playerkillsFugitive = true){
variable - 1
}
Note: If you want people to be able to reverse their lost karma for killing a good person, change variable - 1 to variable - 2 I'm going to assume you want for people to be able to reverse, otherwise change the 2 to 1 in the commands.
Now have the following commands on a clock powered in the following order:
A limitation is that if another one killed another person in the last 1/10 of a second, it will be activated twice. However, this is very unlikely.
/execute @a[score_death_min=1] ~ ~ ~ scoreboard players remove @p[score_timeSinceKill=2] karma 2
/scoreboard players set @p death 0
Finally, the last two sections:
if(variable > 0 ){
team == Team1
}
if(variable < 1){
team == Team2
}
For the first section, on a clock have
/scoreboard teams join Team1 @a[score_karma_min=1]
Second, have a command on a clock:
/scoreboard teams join Team2 @a[score_karma=0]
