How would i go about doing a randomly chosen transformation?

[MikeyBrikey]

I am making a character mod where every day it chooses a random transformation. I know the basics of making a transformation, but i don't know how to randomly choose between them.

Here is my character prefab code.

local MakePlayerCharacter = require "prefabs/player_common"



local assets = {
    Asset("SCRIPT", "scripts/prefabs/player_common.lua"),
}
local prefabs = {}

-- Custom starting inventory
local start_inv = {
"mandrake",
"mandrake",
"mandrake",
"mandrake",
"mandrake"
}

inst.chance = math.random()
-- When the character is revived from human
local function onbecamehuman(inst)
	-- Set speed when not a ghost (optional)
	inst.components.locomotor:SetExternalSpeedMultiplier(inst, "cham_speed_mod", 1)
end

local function onbecameghost(inst)
	-- Remove speed modifier when becoming a ghost
   inst.components.locomotor:RemoveExternalSpeedMultiplier(inst, "cham_speed_mod")
end



local function SetRandomColor(inst)
	if TheWorld.state.isday then
	
		
        if inst.chance == .1 then
             inst.PushEvent:SetRed()
        elseif inst.chance == .2 then
             inst.PushEvent:SetBlue()
        elseif inst.chance == .3 then
            inst.PushEvent:SetPurple()
		elseif inst.chance >= .3 then
            inst.PushEvent:SetNormal()
        end
	end
end

local function SetNormal()
	inst.components.health:SetMaxHealth(125)
	inst.components.hunger:SetMax(125)
	inst.components.sanity:SetMax(150)
	inst.components.combat.damagemultiplier = .75
	inst.components.hunger.hungerrate = .75 * TUNING.WILSON_HUNGER_RATE
	inst.AnimState:SetBuild("cham")
end

local function SetRed()
	inst.components.health:SetMaxHealth(75)
	inst.components.hunger:SetMax(150)
	inst.components.sanity:SetMax(100)
	inst.components.temperature.inherentsummerinsulation = 3
    inst.components.combat.damagemultiplier = 3
	inst.components.hunger.hungerrate = 1 * TUNING.WILSON_HUNGER_RATE
	inst.components.health.fire_damage_scale = 0
	inst.AnimState:SetBuild("cham_red")
end
local function SetBlue()
	inst.components.health:SetMaxHealth(150)
	inst.components.hunger:SetMax(125)
	inst.components.sanity:SetMax(100)
	inst.components.temperature.inherentinsulation = 3
    inst.components.combat.damagemultiplier = 2
	inst.components.hunger.hungerrate = 1.5 * TUNING.WILSON_HUNGER_RATE
	inst.components.temperature.mintemp = ( 5 )
	inst.components.health.fire_damage_scale = 1.5
	inst.AnimState:SetBuild("cham_red")
end
local function SetPurple()
	inst.components.health:SetMaxHealth(75)
	inst.components.hunger:SetMax(125)
	inst.components.sanity:SetMax(100)
    inst.components.combat.damagemultiplier = 3
	inst.components.hunger.hungerrate = 1 * TUNING.WILSON_HUNGER_RATE
	inst.AnimState:SetBuild("cham_red")
end
local function SetBlack()
	inst.components.health:SetMaxHealth(60)
	inst.components.hunger:SetMax(100)
	inst.components.sanity:SetMax(100)
    inst.components.combat.damagemultiplier = .15
	inst.components.hunger.hungerrate = 1 * TUNING.WILSON_HUNGER_RATE
	inst.AnimState:SetBuild("cham_red")

end


local function onload(inst)
    inst:ListenForEvent("ms_respawnedfromghost", onbecamehuman)
    inst:ListenForEvent("ms_becameghost", onbecameghost)

    if inst:HasTag("playerghost") then
        onbecameghost(inst)
    else
        onbecamehuman(inst)
    end
end



local common_postinit = function(inst) 
	inst.MiniMapEntity:SetIcon( "cham.tex" )
end

local master_postinit = function(inst)
	-- choose which sounds this character will play
	inst.soundsname = "maxwell"
	
	inst:ListenForEvent( "daytime", SetRandomColor(inst), GetWorld())
	-- Stats	
	inst.components.health:SetMaxHealth(125)
	inst.components.hunger:SetMax(125)
	inst.components.sanity:SetMax(150)
    inst:AddTag("monster")	
	-- Damage multiplier (optional)
    inst.components.combat.damagemultiplier = .75
	inst.components.locomotor.triggerscreep = false
	-- Hunger rate (optional)
	inst.components.hunger.hungerrate = .75 * TUNING.WILSON_HUNGER_RATE
	
	inst.OnLoad = onload
    inst.OnNewSpawn = onload
	
end


return MakePlayerCharacter("cham", prefabs, assets, common_postinit, master_postinit, start_inv)

 

Edited April 29, 2020 by MikeyBrikey

[Ultroman]

Lua MathLibrary Tutorial

Scroll down to math.random()

local stateToUse = Random(1, yourNumberOfStates)

if stateToUse == 1 then
	-- blabla
elseif stateToUse == 2 then
	-- blabla
elseif .........

If you want to have different chances for each of the states, then you have to look at distribution algorithms.