How do you make a mob spawner for multiple mobs

ID:2645509
 
Dec 31 2020, 9:34 am
(See the best response by Kaiochao.)
Hi everyone,
I'm new to Byond and I have followed a tutorial to make a PvE game and I want to make a spawner so that you never run out of mobs. As there were 2 enemies in this tutorial (Although, I have added more myself), I want to know who to make this spawner be able to spawn all of them, but the harder to defeat the enemies, the lower chance it has. I have been looking throughout the forums and none of them meets my criteria.
Thank you in advance
Dec 31 2020, 4:54 pm (Edited on Jan 1 2021, 6:50 am)
Best response
If you know ahead of time how relatively difficult enemies are, you can use a weighted pick to randomly choose what type of enemy to spawn:
obj/enemy_spawner
  var/list/enemy_type_weights = list(
    /mob/enemy/weak = 3,
    /mob/enemy/normal = 2,
    /mob/enemy/strong = 1,
  )
  proc/SpawnRandomEnemy()
    var/enemy_type = pickweight(enemy_type_weights)
    new enemy_type(loc)

edit: bolded link for clarity
Jan 1 2021, 6:22 am
Um... pickweight isn't a built in function? Are you using this:

proc/pickweight(list/L)    // make this global
  var/total = 0
  var/item
  for(item in L)
    if(!L[item]) L[item] = 1    // if we didn't set a weight, call it 1
    total += L[item]
  total=rand(1, total)
  for(item in L)
    total-=L[item]
    if(total <= 0) return item
  return null   // this should never happen, but it's a fallback
Jan 1 2021, 8:49 am
In response to Magicsofa
Magicsofa wrote:
Um... pickweight isn't a built in function? Are you using this:

@Kaiochao has linked to a library called pickweight, which already has this function
Jan 1 2021, 8:05 pm
OIC