[Code] Chance to cause effect

[Yakuzashi]

Hi everyone, I have been working on project that includes weapon which makes enemies fall asleep after hit. I had searched through game files and I haven't found any code lines to make my effect based on luck. I mean that I don't want this effect to occur everytime character hits with the weapon. So maybe you know method to cause sleep on attack every few hits.

This is the code:

 ------sleep
local function sleepattack(inst, owner, target)
    if not target:IsValid() then
        --target killed or removed in combat damage phase
        return
    end

    target.SoundEmitter:PlaySound("dontstarve/common/blackpowder_explo")

    if target.components.sleeper ~= nil then
        target.components.sleeper:AddSleepiness(100, 15, inst)
    elseif target.components.grogginess ~= nil then
        target.components.grogginess:AddGrogginess(100, 15)
    end
end

 

Thanks in advance and have a great day/night

[Ultroman]

if math.random() < 0.25 then
	-- Do thing 25% of the time
end

 

math.random() generates a real number between 0.0 and 1.0.

[Yakuzashi]

Whoa. I didn't expect such fast response. Thank you very kindly.

[Ultroman]

You're welcome. It was an easy one

The scripting language is called LUA. It's easy to find this sort of language-specific things with a Google search.

Search: lua random

Just so you don't have to wait for an answer next time

Edited February 15, 2019 by Ultroman

[CarlZalph]

Alternatively to make it a fixed guarantee to do it X times in Y tries, create a set of Y tries with X of them being the good outcome.

 

This can be simplified down nicely if X is 1 by using an incrementer and a stored random integer between the set size to compare against.

Example of simplified:

Spoiler

local ODDS = 4

local ent = {}
ent.try = 1

local function TrySpecial(ent)
  ent.try = ent.try - 1
  if ent.try == 0
  then
    ent.try = ODDS
    ent.tryspecial = math.random(1, ODDS)
    print("")
  end
  if ent.try == ent.tryspecial
  then
    print("special")
  else
    print("boring")
  end
end

for i=1,ODDS*3
do
  TrySpecial(ent)
end

Output:

special
boring
boring
boring

boring
boring
special
boring

special
boring
boring
boring