reward_scoring.lua

local totalDamageOut, totalDamageIn, totalHealing = 0.1, 0.1, 0.1 -- avoid dividing by zero

local scores = {}
local info = globalBosses[bossId]
local damageMap = creature:getDamageMap()

for guid, stats in pairs(info) do
  local player = Player(stats.playerId)
  local part = damageMap[stats.playerId]
  local damageOut, damageIn, healing = (stats.damageOut or 0) + (part and part.total or 0), stats.damageIn or 0, stats.healing or 0

  totalDamageOut = totalDamageOut + damageOut
  totalDamageIn = totalDamageIn + damageIn
  totalHealing = totalHealing + healing

  table.insert(scores, {
    player = player, 
    guid = guid,
    damageOut = damageOut, 
    damageIn = damageIn,
    healing = healing,
  })            
end

local participants = 0
for _, con in ipairs(scores) do
  local score = (con.damageOut / totalDamageOut) + (con.damageIn / totalDamageIn) + (con.healing / totalHealing)
  con.score = score / 3 -- normalize to 0-1
  if score ~= 0 then
    participants = participants + 1
  end
end
table.sort(scores, function(a, b) return a.score > b.score end)

local expectedScore = 1 / participants