[Need Help] Check water level of soil - farm plants

[P0tat0_With0ut_]

Hello, My idea is the machine will auto turn on when plants nearby has water percent lower than X... And my question is how to check that water percent.

 

i know the standard process is find the entity first then check it and set conditions. But i dont sure find what, tile soil or plants... I have tried on plant but is'nt seem right and for the soil im completely stuck. Please help! thank you.

 

local function checkWaterOfPlant(inst)

 

    local x,y,z = inst.Transform:GetWorldPosition()

    local plantNeedWater = TheSim:FindEntities(x,y,z, RANGE, nil, nil, "farm_plant")

 

    if plantNeedWater.??? <= 0.1 then

        inst.components.machine:TurnOn()

    elseif plantNeedWater.??? > 0.99 then

        inst.components.machine:TurnOff()

    end

 

end

 

[Bumber64]

If you need the exact value for the soil, there's no choice but to upvalue hack the farming_manager component's _moisturegrid table (example: my mod here.)

Your alternatives are to check if the soil is moist at all using:

local function test_fn(plant)
    if TheWorld.components.farming_manager:IsSoilMoistAtPoint(plant.Transform:GetWorldPosition()) then
        return true
    end
end

or check if the plant is currently demanding water using:

local function test_fn(plant)
    local ps = plant.components.farmplantstress
    if ps and ps.stressors.moisture and ps.stressors_testfns.moisture and --has moisture need
        ps.stressors_testfns.moisture(plant, ps.stressors.moisture, false) and --moisture need is unmet
        (not plant.components.growable or plant.components.growable:GetCurrentStageData().tendable) --only growing plants can be satisfied
            return true
    end
end

Be aware that your plantNeedWater is a table and would need to be iterated with a loop. It would be better to just use FindEntity:

local ent = FindEntity(inst, RANGE, test_fn, {"farm_plant"}, {"farm_plant_killjoy"})

if ent then
    inst.components.machine:TurnOn()
else
    inst.components.machine:TurnOff()
end

Edited October 3, 2022 by Bumber64

[P0tat0_With0ut_]

I tried your code and it succeeded in finding the entity. But another problem is that I enforce the condition in the prefab file.

I put this in in prefabfn:

    inst:DoPeriodicTask(0, checkWaterOfPlants)

and the result is a machine that repeats "TurnOn" endlessly or say it's not really "TurnOn". And "TurnOff" also. Am i wrong to use DoPeriodicTask and if it, how can i excute this

local ent = FindEntity(inst, RANGE, test_fn, {"farm_plant"}, {"farm_plant_killjoy"})

if ent then
    inst.components.machine:TurnOn()
else
    inst.components.machine:TurnOff()
end

Thank you again and honestly i'm kinda new in lua  

[Bumber64]

I would use 1 for the time (same as ice flingomatic) instead of 0 (lots of unnecessary calculations.) You can also save the task as a variable in case you want to cancel it for some reason (e.g., the machine is damaged.)

inst.checkTask = inst:DoPeriodicTask(1, checkWaterOfPlants)

--To cancel:
if inst.checkTask then
    inst.checkTask:Cancel()
    inst.checkTask = nil
end

Looks like Machine:TurnOn doesn't check if it's already on, so we should do that:

local ent = FindEntity(inst, RANGE, test_fn, {"farm_plant"}, {"farm_plant_killjoy"})

local m = inst.components.machine
if not m.ison and ent then --we're off and a plant needs water
    m:TurnOn()
elseif m.ison then --we're on and no plants need water
    m:TurnOff()
end --else we're currently in the proper state and do nothing

I also forgot to account for Wormwood planting crops outside soil, which doesn't have non-rain moisture:

local function test_fn(plant)
    local x,y,z = plant.Transform:GetWorldPosition()
    if TheWorld.Map:GetTile(TheWorld.Map:GetTileCoordsAtPoint(x,y,z)) == WORLD_TILES.FARMING_SOIL and
        TheWorld.components.farming_manager:IsSoilMoistAtPoint(x,y,z) then
            return true
    end
end

or

local function test_fn(plant)
    local ps = plant.components.farmplantstress
    if ps and ps.stressors.moisture and ps.stressors_testfns.moisture and --has moisture need
        ps.stressors_testfns.moisture(plant, ps.stressors.moisture, false) and --moisture need is unmet
        (not plant.components.growable or plant.components.growable:GetCurrentStageData().tendable) and --only growing plants can be satisfied
        TheWorld.Map:GetTile(TheWorld.Map:GetTileCoordsAtPoint(plant.Transform:GetWorldPosition())) == WORLD_TILES.FARMING_SOIL then --on soil
            return true
    end
end

[P0tat0_With0ut_]

I finally finished everything, thank you so much <3