Mutant Gangland - Select unit to attack

function harrold:_selectEnemyToEngage(_v)
    local v = _v

    local score = 0
    local scoutScore = 0
    local posX, posY = nil, nil
    local targetID = nil
    for i,j in ipairs(unit:_returnTable()) do
        local un = j
        if j.team ~= unit:_returnTurn() then
            local bool, threat, bid = self:isEnemyNearOneOfOurBuildings(j)

            local moveScore = 0
            local path, length = pather:getPath(v.x, v.y, un.x, un.y)
            local bunitScore = self:scoreUnit(v)
            local targUnScore = self:scoreUnit(un)
            if path ~= nil then
                local modifier = 0
                if bool == true then
                    local extraMode = 0
                    if bid ~= nil then
                        local bld = building:_returnBuildingTable()[bid]
                        -- get my own distance to the
                        local distCheck = math.dist(v.x, v.y, bld.x, bld.y)
                        if distCheck < v.range then
                            extraMode = 18 - distCheck*2
                        end
                        if length < 4 then
                            extraMode = extraMode + 500
                        end
                    end
                    if threat == 1 then
                        if j.tp == 1 or j.tp == 2 then
                            modifier = 225 + extraMode
                        else
                            modifier = 125 + extraMode
                        end
                    else
                        modifier = 20
                    end
                end
                local freeSpotModifier = 0
                local mcX, mcY = self:findFreeSpot(j.x, j.y, v.attack_range)
                if mcX ~= nil and mcy ~= nil then
                    freeSpotModifier = - 200
                else
                    freeSpotModifier = 40
                end
                moveScore = moveScore + (30 - length) + modifier + (20 ) + freeSpotModifier
                if moveScore > score then
                    posX, posY = un.x, un.y
                    score = moveScore
                    targetID = i
                end
            else
                --print("NIL FUCKERE")
            end
        end
    end

    v.goal_x = posX
    v.goal_y = posY
    v.rival = i
    if v.goal_x == nil and v.goal_y == nil then
        --print("FIND FREE LOCATION")
        v.goal_x, v.goal_y = self:_findFreeLocation(v)
    end

end