Fetid Lua Sim

-- Code made by Oysi

local function f(n) return string.format("%.2f", n) end

local function ftime(n)
    local min = math.floor(n/60)
    local sec = math.floor(n%60*100 + 0.5)/100
    local secStr = string.format("%.2f", n%60)
    if min < 10 then
        --min = "0" .. min
    end
    if sec < 10 then
        secStr = "0" .. secStr
    end
    return min .. ":" .. secStr
end

local function sim(data)
    local timer = 0
    local damage = 0
    local bossMaxHP = data.bossMaxHP
    local bossHP = bossMaxHP

    for i, dude in ipairs(data.dudes) do
        dude.damage = 0
        dude.aaTimer = 0
        dude.cooldownAvailable = true
        dude.cooldownTimer = 0
    end

    local heroAvailable = true
    local heroTimer = 0

    local delta = 0.01
    while bossHP > 0 do
        local haste = 1
        local dmgmul = 1

        -- Dudes
        for i, dude in ipairs(data.dudes) do
            local haste = haste
            local dmgmul = dmgmul

            -- Hero
            heroTimer = math.max(heroTimer - delta, 0)
            if heroAvailable and bossHP/bossMaxHP <= data.heroPercent then
                heroAvailable = false
                heroTimer = 40
            end
            if heroTimer > 0 then
                --haste = haste * 1.3
                dmgmul = dmgmul * 1.3
            end

            -- Cooldown
            dude.cooldownTimer = math.max(dude.cooldownTimer - delta, 0)
            if dude.cooldownAvailable and bossHP/bossMaxHP <= dude.cooldownpercent then
                dude.cooldownAvailable = false
                dude.cooldownTimer = dude.cooldownduration
            end
            if dude.cooldownTimer > 0 then
                dmgmul = dmgmul * dude.cooldownmul
            end

            -- Auto attack
            dude.aaTimer = math.max(dude.aaTimer - delta*haste, 0)
            if dude.aaTimer <= 0 then
                dude.aaTimer = 1

                local aaDamage = dude.autoattack*dmgmul
                if bossHP <= bossMaxHP*data.executeStart then
                    aaDamage = aaDamage * data.executeMul
                end

                if bossHP <= 0 then
                    aaDamage = 0
                end

                dude.damage = dude.damage + aaDamage
                bossHP = bossHP - aaDamage

                if data.print then
                    print(
                        ftime(timer) ..
                        " - Dude #" .. i ..
                        " - Damage: " .. f(aaDamage) ..
                        " - Health: " .. f(bossHP) .. " (" .. f(bossHP/bossMaxHP*100) .. "%)" ..
                        " - DPS: " .. string.format("%.3f", dude.damage/timer) ..
                        (heroTimer > 0 and " - HERO" or "") ..
                        (dude.cooldownTimer > 0 and " - COOLDOWN" or "")
                    )
                end

                -- on hit: generate new dude
                --[[
                if aaDamage > 0 then
                    local newDude = {autoattack = 1, cooldownpercent = 0.5, cooldownmul = 2, cooldownduration = 20};
                    newDude.damage = 0
                    newDude.aaTimer = 1
                    newDude.cooldownAvailable = true
                    newDude.cooldownTimer = 0
                    table.insert(data.dudes, newDude)
                end
                --]]
            end
        end

        -- Constant external dot
        if data.externalDot and data.externalDot > 0 then
            if bossHP <= bossMaxHP*data.executeStart then
                bossHP = bossHP - delta*data.externalDot*data.executeMul
            else
                bossHP = bossHP - delta*data.externalDot
            end
        end

        timer = timer + delta
    end

    return damage, timer
end

sim {
    bossMaxHP = 500;
    heroPercent = 0.5;
    executeStart = 0.5;
    executeMul = 1.5;
    externalDot = 0;
    dudes = {
        {autoattack = 1, cooldownpercent = 0.5, cooldownmul = 2, cooldownduration = 20};
        {autoattack = 1, cooldownpercent = 0.5, cooldownmul = 2, cooldownduration = 20};
    };
    print = true;
}