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-- 植物魔法活石活木
local args = {...};
if args[1] == nil or args[1] == 0 or args[2] == nil or args[2] == 0 then
    print("invalid arg expect program range range");
    return;
end
local mData = {
    wood = {
        solt = 4,
        layer = 2,
        productSolt = 2,
        radio = 0.3
    },
    stone = {
        solt = 5,
        layer = 3,
        productSolt = 3,
        radio = 0.7
    },
    currLayer = 1;
}
local range = {x = tonumber(args[1]), z = tonumber(args[2])};

-- 传输活石或活木到箱子中
function reap(solt)
    print("current solt = ", solt);
    local itemData = turtle.getItemDetail(solt);
    print("item name = ", itemData.name);
    for i = 1, 16, 1 do
        print("try get itemData now");
        local currItemData = turtle.getItemDetail(i);
        -- 如果物品存在并且与指定位置的物品相同
        if (currItemData ~= nil) then
            print("cant get itemData at ", i, "solt");
            print("this item name =  ", currItemData.name);
            if (itemData.name == currItemData.name) then
                local itemCount = turtle.getItemCount(i);
                print("this item count = ", itemCount);
                turtle.select(i);
                if i == solt then
                    turtle.drop(itemCount - 1);
                end
                if i ~= solt then
                    turtle.drop(itemCount);
                end
            end
        end

        if currItemData == nil then
            print("cant get itemData at ", i, "solt");
        end
    end
end

function fetch(solt, need, layer)
    turtle.select(solt);
    local itemCount = turtle.getItemCount();
    if itemCount == nil then
        return 0;
    end
    if itemCount + 1 >= need then
        return itemCount + 1;
    else
        goLayer(layer);
        turtle.suck(need - itemCount + 1);
        print("layer suck item count = ", need - itemCount + 1, " then itemCount = ", turtle.getItemCount());
        return turtle.getItemCount();
    end
end

function goLayer(layer)
    print("go layer = ", layer, "currLayer = ", mData.currLayer);
    local step = layer - mData.currLayer;
    while (mData.currLayer < 10) and (mData.currLayer > 0) do
        if layer == mData.currLayer then
            return true;
        end
        if step < 0 then
            turtle.down();
            mData.currLayer = mData.currLayer - 1;
        end
        if step > 0 then
            turtle.up();
            mData.currLayer = mData.currLayer + 1;
        end
    end
    return false;
end

function tryStart(totalStep)
    local totalCount = totalStep - (totalStep / 9); -- 32
    local woodNeed = math.floor(totalCount * mData.wood.radio); -- 9
    local stoneNeed = totalCount - woodNeed; -- 23
    local fetchCount = fetch(mData.wood.solt, woodNeed, mData.wood.layer) + fetch(mData.stone.solt, stoneNeed, mData.stone.layer);
    goLayer(1);
    return fetchCount >= totalCount;
end


function patrolling(range)
    local totalStep = range.x * range.z; -- 18
    local postion = {x = 1, z = 1};

    local totalCount = totalStep - (totalStep / 9);
    local woodStep = {math.floor(totalCount * mData.wood.radio)};

    turtle.turnRight();
    turtle.turnRight();

    for i = 1, totalStep, 1 do
        action(woodStep, i);
        -- print("i=", i, ",postion.z=", postion.z, ",postion.x=", postion.x);
        if math.fmod(i, range.x) == 0 then -- 如果达到x坐标的变界
            print("reach x border, postion.z=", postion.z, ",range.z=", range.z);
            if postion.z == range.z then -- 如果当前z坐标等于范围z坐标，说明已经走到最大的范围
                print("start back currx=", postion.x, " currz=", postion.z);
                if math.fmod(postion.z, 2) == 1 then
                    back(range.x, range.z);
                end
                if math.fmod(postion.z, 2) == 0 then
                    back(1, range.z);
                end
                break;
            end
            if math.fmod(postion.z, 2) == 1 then -- 如果是奇数列
                turtle.turnRight();
                turtle.forward();
                turtle.turnRight();
            end
            if math.fmod(postion.z, 2) == 0 then -- 如果是偶数列
                turtle.turnLeft();
                turtle.forward();
                turtle.turnLeft();
            end
            postion.z = postion.z + 1;
        else -- 如果没有达到x坐标的边界
            turtle.forward();
        end
    end
end

function back(x, z) -- x == 6 z == 6
    local home = {x = 1, z = 1};
    if x > home.x then
        turtle.turnLeft();
        turtle.turnLeft();
    end
    while true do
        if x == home.x then
            break;
        else
            turtle.forward();
        end
        x = x - 1;
    end
    if z > home.z then
        turtle.turnRight();
        while true do
            if z == home.z then
                turtle.turnLeft();
                break;
            else
                turtle.forward();
            end
            z = z - 1;
        end
    end
    reap(mData.wood.productSolt);
    reap(mData.stone.productSolt);
end

function compareAndDig(woodStep, step)
    turtle.select(mData.wood.productSolt);
    if turtle.compareDown() then
        turtle.digDown();
        placeBlock(woodStep, step);
        return true;
    end
    turtle.select(mData.stone.productSolt);
    if turtle.compareDown() then
        turtle.digDown();
        placeBlock(woodStep, step);
        return true;
    end
    return false;
end

function action(woodStep, step)
    -- 如果检测到下方有方块，则挖掘并放置
    if turtle.detectDown() and not compareAndDig(woodStep, step) then
        woodStep[1] = woodStep[1] + 1;
    -- 如果没有检测到方块则直接放置
    else
        placeBlock(woodStep, step);
    end
end

function placeBlock(woodStep, step)
    if step <= woodStep[1] then
        turtle.select(mData.wood.solt);
    else
        turtle.select(mData.stone.solt);
    end
    if turtle.getItemCount() > 1 then
        turtle.placeDown();
    end
end

while true do
    if turtle.getFuelLevel() ~= "unlimited" and turtle.getFuelLevel() < 1 then
        turtle.select(1);
        turtle.refuel(1);
    end
    if turtle.getFuelLevel() < 1 then
        print("need fuel!!");
        break;
    end
    if redstone.getInput("right") then break end
    if tryStart(range.x * range.z) then
        if turtle.detectDown() then
            turtle.select(mData.wood.productSolt);
            if turtle.compareDown() then
                patrolling(range);
            end
            turtle.select(mData.stone.productSolt);
            if turtle.compareDown() then
                patrolling(range);
            end
        else
            patrolling(range);
        end
    end
    os.sleep(2);
end