PE LUA Help

**Guvnor** · 09-02-2014

Wish someone could set up another PE forums but not have the unlocker on it so all you great coders have a place to help out us noobs with the coding like this would be GREAT!!!

**Tiger23078001** · 09-02-2014

Originally Posted by RedRussian

OP, for the purpose of DoT (or heavy casts like Chaos Bolt) snapshotting you might want to know only the present and future (I prefer to call it "projected") value of your stats. I use my custom rotation engine but I think the following approach could implemented in PE as well.

1. I use some abstract score of buff's utility called "Burst rating". The score for each buff of interest is set manually.
The table of such buffs of interest is as follows. I filled it with some sample content:

Code:

RRR_DB.bursts = {
--[<buff_id>] = { rating = <buff_burst_rating> },
--ratings are purely imaginary though they can be interpreted as "main stat value"
    --general INT
    [105702] = { rating = 4000 },    --potion MoP
    [104993] = { rating = 1650 },     --jade spirit
    [125487] = { rating = 2000 },    --lightweave INT
    [96230]  = { rating = 1920 },    --synapse springs INT
    [126705] = { rating = 6750 },    --pvp proc trinket INT
    [126683] = { rating = 5000 },    --pvp use trinket INT
    
    --druid
    [102560] = { rating = 9000 },    --incarnation
    [112071] = { rating = 9000 },    --celestial alignment
    [124974] = { rating = 4000 },    --nature's vigil
}

2. Then you need to store info of all buffs you get. How you do so is entirely of your choosing, but the result you should aim for is a table contating buff_id as keys and buff_info (table) as values, which would be updated on various events concerning your buffs.

3. Given the tables of bursts of interest and your current buffs, you need a function to calculate and project your burst rating.
Mine looks as follows:

Code:

function ProjectBurstRating(horizon)
--NOTE
--for every horizon, epsilon > 0 : ProjectBurstRating(horizon) >= ProjectBurstRating(horizon + epsilon)
    horizon = horizon or 0
    local current_time = GetTime()
    local burst_rating = 1
    local first_expiry_in = math.huge
    for id, burst_info in pairs(RRR_DB.bursts) do
        local buff = RRR_PlayerInfo.player_data.buffs[id] --it's the table of stored buffs
        if buff then
            burst_rating = burst_rating + burst_info.rating * buff.num_stacks
            local buff_expiry_in = buff.expiry_time - current_time
            if buff_expiry_in <= first_expiry_in then
                first_expiry_in = buff_expiry_in
            end
            if buff.expiry_time - current_time <= horizon then
                burst_rating = burst_rating - burst_info.rating * buff.num_stacks
            end
        end
    end
    return burst_rating, first_expiry_in
end

4. Given the knowledge of your current and future "power", it's easy to decide whether it's time to refresh your DoTs or cast a long yet powerful cast.
Chaos Bolt example:

Code:

local critical_ratio = 1.5
if ( ProjectBurstRating( CB_cast_time + 0.5 ) / ProjectBurstRating(0) ) >= critical_ratio then  --our bursts are about to expire!
   CastSpellByID(CB_id)
end

I have handling "buffs" down, but I need to get the cast time of Chaos Bolt and be able to compare it to the duration of the buffs that are up.

For instance if my CB is 2.5 seconds long and my trinket is up for only 2.0 seconds then I don't want to cast CB. I'm not new to the WoW API and Lua so I'm not sure how to get the value of the chaos bolt cast time with "GetSpellInfo()".