update seedwatch

docs/plugins/seedwatch.rst

@@ -5,42 +5,47 @@ seedwatch
     :summary: Manages seed and plant cooking based on seed stock levels.
     :tags: fort auto plants
 
-Each seed type can be assigned a target. If the number of seeds of that type
-falls below that target, then the plants and seeds of that type will be excluded
-from cookery. If the number rises above the target + 20, then cooking will be
-allowed.
+Unlike brewing and other kinds of processing, cooking plants does not produce
+a usable seed. By default, all plants are allowed to be cooked. This often leads
+to the situation where dwarves have no seeds left to plant crops with because
+they cooked all the relevant plants. Seedwatch protects you from this problem.
 
-The plugin needs a fortress to be loaded and will deactivate automatically
-otherwise. You have to reactivate with ``enable seedwatch`` after you load a
-fort.
+Each seed type can be assigned a target stock amount. If the number of seeds of
+that type falls below that target, then the plants and seeds of that type will
+be protected from cookery. If the number rises above the target + 20, then
+cooking will be allowed again.
 
 Usage
 -----
 
 ``enable seedwatch``
-    Start managing seed and plant cooking. By default, no types are watched.
-    You have to add them with further ``seedwatch`` commands.
+    Start managing seed and plant cooking. By default, all types are watched
+    with a target of ``30``, but you can adjust the list or even
+    ``seedwatch clear`` it and start your own if you like.
+``seedwatch [status]``
+    Display whether seedwatch is enabled and prints out the watch list, along
+    with the current seed counts.
 ``seedwatch <type> <target>``
     Adds the specified type to the watchlist (if it's not already there) and
     sets the target number of seeds to the specified number. You can pass the
     keyword ``all`` instead of a specific type to set the target for all types.
-``seedwatch <type>``
-    Removes the specified type from the watch list.
+    If you set the target to ``0``, it removes the specified type from the
+    watch list.
 ``seedwatch clear``
-    Clears all types from the watch list.
-``seedwatch info``
-    Display whether seedwatch is enabled and prints out the watch list.
+    Clears all types from the watch list. Same as ``seedwatch all 0``.
 
-To print out a list of all plant types, you can run this command::
+To see a list of all plant types that you might want to set targets for, you can
+run this command::
 
     devel/query --table df.global.world.raws.plants.all --search ^id --maxdepth 1
 
 Examples
 --------
 
-``seedwatch all 30``
-    Adds all seeds to the watch list and sets the targets to 30.
+``enable seedwatch``
+    Adds all seeds to the watch list, sets the targets to 30, and starts
+    monitoring your seed stock levels.
 ``seedwatch MUSHROOM_HELMET_PLUMP 50``
     Add Plump Helmets to the watch list and sets the target to 50.
-``seedwatch MUSHROOM_HELMET_PLUMP``
+``seedwatch MUSHROOM_HELMET_PLUMP 0``
     removes Plump Helmets from the watch list.

library/include/LuaTools.h

@@ -30,6 +30,7 @@ distribution.
 #include <vector>
 #include <map>
 #include <type_traits>
+#include <unordered_map>
 
 #include "df/interfacest.h"
 
@@ -378,6 +379,13 @@ namespace DFHack {namespace Lua {
             TableInsert(L, entry.first, entry.second);
     }
 
+    template<typename T_Key, typename T_Value>
+    void Push(lua_State *L, const std::unordered_map<T_Key, T_Value> &pmap) {
+        lua_createtable(L, 0, pmap.size());
+        for (auto &entry : pmap)
+            TableInsert(L, entry.first, entry.second);
+    }
+
     DFHACK_EXPORT void CheckPen(lua_State *L, Screen::Pen *pen, int index, bool allow_nil = false, bool allow_color = true);
 
     DFHACK_EXPORT bool IsCoreContext(lua_State *state);

library/include/modules/Kitchen.h

@@ -27,11 +27,6 @@ distribution.
 * kitchen settings
 */
 #include "Export.h"
-#include "Module.h"
-#include "Types.h"
-#include "VersionInfo.h"
-#include "Core.h"
-#include "modules/Items.h"
 #include "df/kitchen_exc_type.h"
 
 /**
@@ -43,38 +38,21 @@ namespace DFHack
 {
 namespace Kitchen
 {
+// print the exclusion list, with the material index also translated into its token (for organics) - for debug really
+DFHACK_EXPORT void debug_print(color_ostream &out);
+
 /**
  * Kitchen exclusions manipulator. Currently geared towards plants and seeds.
  * \ingroup grp_modules
  * \ingroup grp_kitchen
  */
 
-// print the exclusion list, with the material index also translated into its token (for organics) - for debug really
-DFHACK_EXPORT void debug_print(color_ostream &out);
-
 // remove this plant from the exclusion list if it is in it
 DFHACK_EXPORT void allowPlantSeedCookery(int32_t plant_id);
 
 // add this plant to the exclusion list, if it is not already in it
 DFHACK_EXPORT void denyPlantSeedCookery(int32_t plant_id);
 
-// fills a map with info from the limit info storage entries in the exclusion list
-DFHACK_EXPORT void fillWatchMap(std::map<int32_t, int16_t>& watchMap);
-
-// Finds the index of a limit info storage entry. Returns -1 if not found.
-DFHACK_EXPORT int findLimit(int32_t plant_id);
-
-// removes a limit info storage entry from the exclusion list if it's present
-DFHACK_EXPORT bool removeLimit(int32_t plant_id);
-
-// add a limit info storage item to the exclusion list, or alters an existing one
-DFHACK_EXPORT bool setLimit(int32_t plant_id, int16_t limit);
-
-// clears all limit info storage items from the exclusion list
-DFHACK_EXPORT void clearLimits();
-
-DFHACK_EXPORT std::size_t size();
-
 // Finds the index of a kitchen exclusion in plotinfo.kitchen.exc_types. Returns -1 if not found.
 DFHACK_EXPORT int findExclusion(df::kitchen_exc_type type,
     df::item_type item_type, int16_t item_subtype,
@@ -90,5 +68,7 @@ DFHACK_EXPORT bool removeExclusion(df::kitchen_exc_type type,
     df::item_type item_type, int16_t item_subtype,
     int16_t mat_type, int32_t mat_index);
 
+DFHACK_EXPORT std::size_t size();
+
 }
 }

library/modules/Kitchen.cpp

@@ -78,84 +78,6 @@ void Kitchen::denyPlantSeedCookery(int32_t plant_id)
         type->material_defs.idx[plant_material_def::basic_mat]);
 }
 
-void Kitchen::fillWatchMap(std::map<int32_t, int16_t>& watchMap)
-{
-    watchMap.clear();
-    for (std::size_t i = 0; i < size(); ++i)
-    {
-        if (plotinfo->kitchen.item_subtypes[i] == SEEDLIMIT_ITEMTYPE &&
-            plotinfo->kitchen.item_subtypes[i] == SEEDLIMIT_ITEMSUBTYPE &&
-            plotinfo->kitchen.exc_types[i] == SEEDLIMIT_EXCTYPE)
-        {
-            watchMap[plotinfo->kitchen.mat_indices[i]] = plotinfo->kitchen.mat_types[i];
-        }
-    }
-}
-
-int Kitchen::findLimit(int32_t plant_id)
-{
-    for (size_t i = 0; i < size(); ++i)
-    {
-        if (plotinfo->kitchen.item_types[i] == SEEDLIMIT_ITEMTYPE &&
-            plotinfo->kitchen.item_subtypes[i] == SEEDLIMIT_ITEMSUBTYPE &&
-            plotinfo->kitchen.mat_indices[i] == plant_id &&
-            plotinfo->kitchen.exc_types[i] == SEEDLIMIT_EXCTYPE)
-        {
-            return int(i);
-        }
-    }
-    return -1;
-}
-
-bool Kitchen::removeLimit(int32_t plant_id)
-{
-    int i = findLimit(plant_id);
-    if (i < 0)
-        return false;
-
-    plotinfo->kitchen.item_types.erase(plotinfo->kitchen.item_types.begin() + i);
-    plotinfo->kitchen.item_subtypes.erase(plotinfo->kitchen.item_subtypes.begin() + i);
-    plotinfo->kitchen.mat_types.erase(plotinfo->kitchen.mat_types.begin() + i);
-    plotinfo->kitchen.mat_indices.erase(plotinfo->kitchen.mat_indices.begin() + i);
-    plotinfo->kitchen.exc_types.erase(plotinfo->kitchen.exc_types.begin() + i);
-    return true;
-}
-
-bool Kitchen::setLimit(int32_t plant_id, int16_t limit)
-{
-    if (limit > SEEDLIMIT_MAX)
-        limit = SEEDLIMIT_MAX;
-
-    int i = findLimit(plant_id);
-    if (i < 0)
-    {
-        plotinfo->kitchen.item_types.push_back(SEEDLIMIT_ITEMTYPE);
-        plotinfo->kitchen.item_subtypes.push_back(SEEDLIMIT_ITEMSUBTYPE);
-        plotinfo->kitchen.mat_types.push_back(limit);
-        plotinfo->kitchen.mat_indices.push_back(plant_id);
-        plotinfo->kitchen.exc_types.push_back(SEEDLIMIT_EXCTYPE);
-    }
-    else
-    {
-        plotinfo->kitchen.mat_types[i] = limit;
-    }
-    return true;
-}
-
-void Kitchen::clearLimits()
-{
-    for (size_t i = 0; i < size(); ++i)
-    {
-        if (plotinfo->kitchen.item_types[i] == SEEDLIMIT_ITEMTYPE &&
-            plotinfo->kitchen.item_subtypes[i] == SEEDLIMIT_ITEMSUBTYPE &&
-            plotinfo->kitchen.exc_types[i] == SEEDLIMIT_EXCTYPE)
-        {
-            removeLimit(plotinfo->kitchen.mat_indices[i]);
-            --i;
-        }
-    }
-}
-
 size_t Kitchen::size()
 {
     return plotinfo->kitchen.item_types.size();

plugins/CMakeLists.txt

@@ -149,7 +149,7 @@ add_subdirectory(remotefortressreader)
 #add_subdirectory(rendermax)
 dfhack_plugin(reveal reveal.cpp LINK_LIBRARIES lua)
 #dfhack_plugin(search search.cpp)
-dfhack_plugin(seedwatch seedwatch.cpp)
+dfhack_plugin(seedwatch seedwatch.cpp LINK_LIBRARIES lua)
 dfhack_plugin(showmood showmood.cpp)
 #dfhack_plugin(siege-engine siege-engine.cpp LINK_LIBRARIES lua)
 #dfhack_plugin(sort sort.cpp LINK_LIBRARIES lua)

plugins/lua/seedwatch.lua

@@ -0,0 +1,67 @@
+local _ENV = mkmodule('plugins.seedwatch')
+
+local argparse = require('argparse')
+
+local function process_args(opts, args)
+    if args[1] == 'help' then
+        opts.help = true
+        return
+    end
+
+    return argparse.processArgsGetopt(args, {
+            {'h', 'help', handler=function() opts.help = true end},
+        })
+end
+
+local function print_status()
+    print(('seedwatch is %s'):format(isEnabled() and "enabled" or "disabled"))
+    print()
+    print('usable seed counts and current targets:')
+    local watch_map, seed_counts = seedwatch_getData()
+    local sum = 0
+    local plants = df.global.world.raws.plants.all
+    for k,v in pairs(seed_counts) do
+        print(('  %4d/%d %s'):format(v, watch_map[k] or 0, plants[k].id))
+        sum = sum + v
+    end
+    print()
+    print(('total usable seeds: %d'):format(sum))
+end
+
+local function set_target(name, num)
+    if not name or #name == 0 then
+        qerror('must specify "all" or plant name')
+    end
+
+    num = tonumber(num)
+    num = num and math.floor(num) or nil
+    if not num or num < 0 then
+        qerror('target must be a non-negative integer')
+    end
+
+    seedwatch_setTarget(name, num)
+end
+
+function parse_commandline(...)
+    local args, opts = {...}, {}
+    local positionals = process_args(opts, args)
+
+    if opts.help then
+        return false
+    end
+
+    local command = positionals[1]
+    if not command or command == 'status' then
+        print_status()
+    elseif command == 'clear' then
+        set_target('all', 0)
+    elseif positionals[2] and positionals[3] then
+        set_target(positionals[2], positionals[3])
+    else
+        return false
+    end
+
+    return true
+end
+
+return _ENV

plugins/seedwatch.cpp

@@ -4,218 +4,113 @@
 // With thanks to peterix for DFHack and Quietust for information
 // http://www.bay12forums.com/smf/index.php?topic=91166.msg2605147#msg2605147
 
-#include <map>
-#include <string>
-#include <vector>
-#include "Console.h"
-#include "Core.h"
-#include "Export.h"
+#include "Debug.h"
+#include "LuaTools.h"
 #include "PluginManager.h"
-#include "modules/World.h"
-#include "modules/Materials.h"
+#include "TileTypes.h"
+
 #include "modules/Kitchen.h"
-#include "VersionInfo.h"
-#include "df/world.h"
-#include "df/plant_raw.h"
+#include "modules/Maps.h"
+#include "modules/Persistence.h"
+#include "modules/Units.h"
+#include "modules/World.h"
+
 #include "df/item_flags.h"
 #include "df/items_other_id.h"
+#include "df/plant_raw.h"
+#include "df/world.h"
+
+#include <unordered_map>
 
-using namespace std;
 using namespace DFHack;
 using namespace df::enums;
 
+using std::map;
+using std::string;
+using std::unordered_map;
+using std::vector;
+
 DFHACK_PLUGIN("seedwatch");
-DFHACK_PLUGIN_IS_ENABLED(running); // whether seedwatch is counting the seeds or not
+DFHACK_PLUGIN_IS_ENABLED(is_enabled);
 
 REQUIRE_GLOBAL(world);
 
-const int buffer = 20; // seed number buffer - 20 is reasonable
+namespace DFHack {
+    // for configuration-related logging
+    DBG_DECLARE(seedwatch, config, DebugCategory::LINFO);
+    // for logging during the periodic scan
+    DBG_DECLARE(seedwatch, cycle, DebugCategory::LINFO);
+}
 
 // abbreviations for the standard plants
-map<string, string> abbreviations;
-
-bool ignoreSeeds(df::item_flags& f) // seeds with the following flags should not be counted
-{
-    return
-        f.bits.dump ||
-        f.bits.forbid ||
-        f.bits.garbage_collect ||
-        f.bits.hidden ||
-        f.bits.hostile ||
-        f.bits.on_fire ||
-        f.bits.rotten ||
-        f.bits.trader ||
-        f.bits.in_building ||
-        f.bits.in_job;
-};
+static unordered_map<string, const char *> abbreviations;
+static map<string, int32_t> world_plant_ids;
+static const int DEFAULT_TARGET = 30;
+static const int TARGET_BUFFER = 20; // seed number buffer; 20 is reasonable
 
-// searches abbreviations, returns expansion if so, returns original if not
-string searchAbbreviations(string in)
-{
-    if(abbreviations.count(in) > 0)
-    {
-        return abbreviations[in];
-    }
-    else
-    {
-        return in;
-    }
+static const string CONFIG_KEY = string(plugin_name) + "/config";
+static const string SEED_CONFIG_KEY_PREFIX = string(plugin_name) + "/seed/";
+static PersistentDataItem config;
+static unordered_map<int, PersistentDataItem> watched_seeds;
+
+enum ConfigValues {
+    CONFIG_IS_ENABLED = 0,
 };
 
-DFhackCExport command_result plugin_enable(color_ostream &out, bool enable)
-{
-    if(enable == true)
-    {
-        if(Core::getInstance().isWorldLoaded())
-        {
-            running = true;
-            out.print("seedwatch supervision started.\n");
-        } else {
-            out.printerr(
-                "This plugin needs a fortress to be loaded and will deactivate automatically otherwise.\n"
-                "Activate with 'seedwatch start' after you load the game.\n"
-                );
-        }
-    } else {
-        running = false;
-        out.print("seedwatch supervision stopped.\n");
-    }
+enum SeedConfigValues {
+    SEED_CONFIG_ID = 0,
+    SEED_CONFIG_TARGET = 1,
+};
 
-    return CR_OK;
+static int get_config_val(PersistentDataItem &c, int index) {
+    if (!c.isValid())
+        return -1;
+    return c.ival(index);
+}
+static bool get_config_bool(PersistentDataItem &c, int index) {
+    return get_config_val(c, index) == 1;
+}
+static void set_config_val(PersistentDataItem &c, int index, int value) {
+    if (c.isValid())
+        c.ival(index) = value;
+}
+static void set_config_bool(PersistentDataItem &c, int index, bool value) {
+    set_config_val(c, index, value ? 1 : 0);
 }
 
-command_result df_seedwatch(color_ostream &out, vector<string>& parameters)
-{
-    CoreSuspender suspend;
-
-    map<string, int32_t> plantIDs;
-    for(size_t i = 0; i < world->raws.plants.all.size(); ++i)
-    {
-        auto & plant = world->raws.plants.all[i];
-        if (plant->material_defs.type[plant_material_def::seed] != -1)
-            plantIDs[plant->id] = i;
-    }
-
-    t_gamemodes gm;
-    World::ReadGameMode(gm);// FIXME: check return value
-
-    // if game mode isn't fortress mode
-    if(gm.g_mode != game_mode::DWARF || !World::isFortressMode(gm.g_type))
-    {
-        // just print the help
-        return CR_WRONG_USAGE;
-    }
+static PersistentDataItem & ensure_seed_config(color_ostream &out, int id) {
+    if (watched_seeds.count(id))
+        return watched_seeds[id];
+    string keyname = SEED_CONFIG_KEY_PREFIX + int_to_string(id);
+    DEBUG(config,out).print("creating new persistent key for seed type %d\n", id);
+    watched_seeds.emplace(id, World::GetPersistentData(keyname, NULL));
+    return watched_seeds[id];
+}
+static void remove_seed_config(color_ostream &out, int id) {
+    if (!watched_seeds.count(id))
+        return;
+    DEBUG(config,out).print("removing persistent key for seed type %d\n", id);
+    World::DeletePersistentData(watched_seeds[id]);
+    watched_seeds.erase(id);
+}
 
-    string par;
-    int limit;
-    switch(parameters.size())
-    {
-    case 0:
-        return CR_WRONG_USAGE;
-
-    case 1:
-        par = parameters[0];
-        if ((par == "help") || (par == "?"))
-        {
-            return CR_WRONG_USAGE;
-        }
-        else if(par == "start")
-        {
-            plugin_enable(out, true);
+static const int32_t CYCLE_TICKS = 1200;
+static int32_t cycle_timestamp = 0;  // world->frame_counter at last cycle
 
-        }
-        else if(par == "stop")
-        {
-            plugin_enable(out, false);
-        }
-        else if(par == "clear")
-        {
-            Kitchen::clearLimits();
-            out.print("seedwatch watchlist cleared\n");
-        }
-        else if(par == "info")
-        {
-            out.print("seedwatch Info:\n");
-            if(running)
-            {
-                out.print("seedwatch is supervising.  Use 'disable seedwatch' to stop supervision.\n");
-            }
-            else
-            {
-                out.print("seedwatch is not supervising.  Use 'enable seedwatch' to start supervision.\n");
-            }
-            map<int32_t, int16_t> watchMap;
-            Kitchen::fillWatchMap(watchMap);
-            if(watchMap.empty())
-            {
-                out.print("The watch list is empty.\n");
-            }
-            else
-            {
-                out.print("The watch list is:\n");
-                for(auto i = watchMap.begin(); i != watchMap.end(); ++i)
-                {
-                    out.print("%s : %u\n", world->raws.plants.all[i->first]->id.c_str(), i->second);
-                }
-            }
-        }
-        else if(par == "debug")
-        {
-            map<int32_t, int16_t> watchMap;
-            Kitchen::fillWatchMap(watchMap);
-            Kitchen::debug_print(out);
-        }
-        else
-        {
-            string token = searchAbbreviations(par);
-            if(plantIDs.count(token) > 0)
-            {
-                Kitchen::removeLimit(plantIDs[token]);
-                out.print("%s is not being watched\n", token.c_str());
-            }
-            else
-            {
-                out.print("%s has not been found as a material.\n", token.c_str());
-            }
-        }
-        break;
-    case 2:
-        limit = atoi(parameters[1].c_str());
-        if(limit < 0) limit = 0;
-        if(parameters[0] == "all")
-        {
-            for(auto & entry : plantIDs)
-                Kitchen::setLimit(entry.second, limit);
-        }
-        else
-        {
-            string token = searchAbbreviations(parameters[0]);
-            if(plantIDs.count(token) > 0)
-            {
-                Kitchen::setLimit(plantIDs[token], limit);
-                out.print("%s is being watched.\n", token.c_str());
-            }
-            else
-            {
-                out.print("%s has not been found as a material.\n", token.c_str());
-            }
-        }
-        break;
-    default:
-        return CR_WRONG_USAGE;
-        break;
-    }
+static command_result do_command(color_ostream &out, vector<string> &parameters);
+static void do_cycle(color_ostream &out, int32_t *num_enabled_seeds, int32_t *num_disabled_seeds);
+static void seedwatch_setTarget(color_ostream &out, string name, int32_t num);
 
-    return CR_OK;
-}
+DFhackCExport command_result plugin_init(color_ostream &out, std::vector <PluginCommand> &commands) {
+    DEBUG(config,out).print("initializing %s\n", plugin_name);
 
-DFhackCExport command_result plugin_init(color_ostream &out, vector<PluginCommand>& commands)
-{
+    // provide a configuration interface for the plugin
     commands.push_back(PluginCommand(
-        "seedwatch",
-        "Toggles seed cooking based on quantity available.",
-        df_seedwatch));
-    // fill in the abbreviations map, with abbreviations for the standard plants
+        plugin_name,
+        "Automatically toggle seed cooking based on quantity available.",
+        do_command));
+
+    // fill in the abbreviations map
     abbreviations["bs"] = "SLIVER_BARB";
     abbreviations["bt"] = "TUBER_BLOATED";
     abbreviations["bw"] = "WEED_BLADE";
@@ -237,72 +132,285 @@ DFhackCExport command_result plugin_init(color_ostream &out, vector<PluginComman
     abbreviations["vh"] = "HERB_VALLEY";
     abbreviations["ws"] = "BERRIES_STRAW";
     abbreviations["wv"] = "VINE_WHIP";
+
     return CR_OK;
 }
 
-DFhackCExport command_result plugin_onstatechange(color_ostream &out, state_change_event event)
-{
-    if (event == SC_MAP_UNLOADED) {
-        if (running)
-            out.print("seedwatch deactivated due to game unload\n");
-        running = false;
+DFhackCExport command_result plugin_enable(color_ostream &out, bool enable) {
+    if (!Core::getInstance().isWorldLoaded()) {
+        out.printerr("Cannot enable %s without a loaded world.\n", plugin_name);
+        return CR_FAILURE;
     }
 
+    if (enable != is_enabled) {
+        is_enabled = enable;
+        DEBUG(config,out).print("%s from the API; persisting\n",
+                                is_enabled ? "enabled" : "disabled");
+        set_config_bool(config, CONFIG_IS_ENABLED, is_enabled);
+        if (enable)
+            seedwatch_setTarget(out, "all", DEFAULT_TARGET);
+    } else {
+        DEBUG(config,out).print("%s from the API, but already %s; no action\n",
+                                is_enabled ? "enabled" : "disabled",
+                                is_enabled ? "enabled" : "disabled");
+    }
     return CR_OK;
 }
 
-DFhackCExport command_result plugin_onupdate(color_ostream &out)
-{
-    if (running)
-    {
-        // reduce processing rate
-        static int counter = 0;
-        if (++counter < 500)
-            return CR_OK;
-        counter = 0;
-
-        t_gamemodes gm;
-        World::ReadGameMode(gm);// FIXME: check return value
-        // if game mode isn't fortress mode
-        if(gm.g_mode != game_mode::DWARF || !World::isFortressMode(gm.g_type))
-        {
-            // stop running.
-            running = false;
-            out.printerr("seedwatch deactivated due to game mode switch\n");
-            return CR_OK;
-        }
-        // this is dwarf mode, continue
-        map<int32_t, int16_t> seedCount; // the number of seeds
-
-        // count all seeds and plants by RAW material
-        for(size_t i = 0; i < world->items.other[items_other_id::SEEDS].size(); ++i)
-        {
-            df::item *item = world->items.other[items_other_id::SEEDS][i];
-            MaterialInfo mat(item);
-            if (!mat.isPlant())
-                continue;
-            if (!ignoreSeeds(item->flags))
-                ++seedCount[mat.plant->index];
-        }
+DFhackCExport command_result plugin_shutdown (color_ostream &out) {
+    DEBUG(config,out).print("shutting down %s\n", plugin_name);
+
+    return CR_OK;
+}
+
+DFhackCExport command_result plugin_load_data (color_ostream &out) {
+    world_plant_ids.clear();
+    for (size_t i = 0; i < world->raws.plants.all.size(); ++i) {
+        auto & plant = world->raws.plants.all[i];
+        if (plant->material_defs.type[plant_material_def::seed] != -1)
+            world_plant_ids[plant->id] = i;
+    }
+
+    config = World::GetPersistentData(CONFIG_KEY);
+
+    if (!config.isValid()) {
+        DEBUG(config,out).print("no config found in this save; initializing\n");
+        config = World::AddPersistentData(CONFIG_KEY);
+        set_config_bool(config, CONFIG_IS_ENABLED, is_enabled);
+    }
+
+    is_enabled = get_config_bool(config, CONFIG_IS_ENABLED);
+    DEBUG(config,out).print("loading persisted enabled state: %s\n",
+                            is_enabled ? "true" : "false");
+    watched_seeds.clear();
+    vector<PersistentDataItem> seed_configs;
+    World::GetPersistentData(&seed_configs, SEED_CONFIG_KEY_PREFIX, true);
+    const size_t num_seed_configs = seed_configs.size();
+    for (size_t idx = 0; idx < num_seed_configs; ++idx) {
+        auto &c = seed_configs[idx];
+        watched_seeds.emplace(get_config_val(c, SEED_CONFIG_ID), c);
+    }
 
-        map<int32_t, int16_t> watchMap;
-        Kitchen::fillWatchMap(watchMap);
-        for(auto i = watchMap.begin(); i != watchMap.end(); ++i)
-        {
-            if(seedCount[i->first] <= i->second)
-            {
-                Kitchen::denyPlantSeedCookery(i->first);
-            }
-            else if(i->second + buffer < seedCount[i->first])
-            {
-                Kitchen::allowPlantSeedCookery(i->first);
-            }
+    return CR_OK;
+}
+
+DFhackCExport command_result plugin_onstatechange(color_ostream &out, state_change_event event) {
+    if (event == DFHack::SC_WORLD_UNLOADED) {
+        if (is_enabled) {
+            DEBUG(config,out).print("world unloaded; disabling %s\n",
+                                    plugin_name);
+            is_enabled = false;
         }
     }
     return CR_OK;
 }
 
-DFhackCExport command_result plugin_shutdown(Core* pCore)
-{
+DFhackCExport command_result plugin_onupdate(color_ostream &out) {
+    if (is_enabled && world->frame_counter - cycle_timestamp >= CYCLE_TICKS) {
+        int32_t num_enabled_seeds, num_disabled_seeds;
+        do_cycle(out, &num_enabled_seeds, &num_disabled_seeds);
+        if (0 < num_enabled_seeds)
+            out.print("%s: enabled %d seed types for cooking\n",
+                    plugin_name, num_enabled_seeds);
+        if (0 < num_disabled_seeds)
+            out.print("%s: protected %d seed types from cooking\n",
+                    plugin_name, num_disabled_seeds);
+    }
     return CR_OK;
 }
+
+static bool call_seedwatch_lua(color_ostream *out, const char *fn_name,
+        int nargs = 0, int nres = 0,
+        Lua::LuaLambda && args_lambda = Lua::DEFAULT_LUA_LAMBDA,
+        Lua::LuaLambda && res_lambda = Lua::DEFAULT_LUA_LAMBDA) {
+    CoreSuspender guard;
+
+    auto L = Lua::Core::State;
+    Lua::StackUnwinder top(L);
+
+    if (!out)
+        out = &Core::getInstance().getConsole();
+
+    DEBUG(config,*out).print("calling %s lua function: '%s'\n", plugin_name, fn_name);
+
+    return Lua::CallLuaModuleFunction(*out, L, "plugins.seedwatch", fn_name,
+            nargs, nres,
+            std::forward<Lua::LuaLambda&&>(args_lambda),
+            std::forward<Lua::LuaLambda&&>(res_lambda));
+}
+
+static command_result do_command(color_ostream &out, vector<string> &parameters) {
+    CoreSuspender suspend;
+
+    if (!Core::getInstance().isWorldLoaded()) {
+        out.printerr("Cannot run %s without a loaded world.\n", plugin_name);
+        return CR_FAILURE;
+    }
+
+    bool show_help = false;
+    if (!call_seedwatch_lua(&out, "parse_commandline", parameters.size(), 1,
+            [&](lua_State *L) {
+                for (const string &param : parameters)
+                    Lua::Push(L, param);
+            },
+            [&](lua_State *L) {
+                show_help = !lua_toboolean(L, -1);
+            })) {
+        return CR_FAILURE;
+    }
+
+    return show_help ? CR_WRONG_USAGE : CR_OK;
+}
+
+/////////////////////////////////////////////////////
+// cycle logic
+//
+
+struct BadFlags {
+    uint32_t whole;
+
+    // TODO: maybe don't filter out seeds that are in_building. that would
+    // allow us to count seeds that are in workshops. are there any negative
+    // consequences?
+    BadFlags() {
+        df::item_flags flags;
+        #define F(x) flags.bits.x = true;
+        F(dump); F(forbid); F(garbage_collect);
+        F(hostile); F(on_fire); F(rotten); F(trader);
+        F(in_building); F(construction); F(artifact);
+        F(in_job); F(owned); F(in_chest); F(removed);
+        F(encased); F(spider_web);
+        #undef F
+        whole = flags.whole;
+    }
+};
+
+static bool is_accessible_item(const df::coord &pos, const vector<df::unit *> &citizens) {
+    for (auto &unit : citizens) {
+        if (Maps::canWalkBetween(unit->pos, pos))
+            return true;
+    }
+    return false;
+}
+
+static void scan_seeds(color_ostream &out, unordered_map<int32_t, int32_t> *accessible_counts,
+        unordered_map<int32_t, int32_t> *inaccessible_counts = NULL) {
+    static const BadFlags bad_flags;
+
+    vector<df::unit *> citizens;
+    Units::getCitizens(citizens);
+
+    for (auto &item : world->items.other[items_other_id::SEEDS]) {
+        MaterialInfo mat(item);
+        if (!mat.isPlant())
+            continue;
+        if ((bad_flags.whole & item->flags.whole) || !is_accessible_item(item->pos, citizens)) {
+            if (inaccessible_counts)
+                ++(*inaccessible_counts)[mat.plant->index];
+        } else {
+            if (accessible_counts)
+                ++(*accessible_counts)[mat.plant->index];
+        }
+    }
+}
+
+static void do_cycle(color_ostream &out, int32_t *num_enabled_seed_types, int32_t *num_disabled_seed_types) {
+    DEBUG(cycle,out).print("running %s cycle\n", plugin_name);
+
+    // mark that we have recently run
+    cycle_timestamp = world->frame_counter;
+
+    if (num_enabled_seed_types)
+        *num_enabled_seed_types = 0;
+    if (num_disabled_seed_types)
+        *num_disabled_seed_types = 0;
+
+    unordered_map<int32_t, int32_t> accessible_counts;
+    scan_seeds(out, &accessible_counts);
+
+    for (auto &entry : watched_seeds) {
+        int32_t id = entry.first;
+        int32_t target = get_config_val(entry.second, SEED_CONFIG_TARGET);
+        if (accessible_counts[id] <= target) {
+            DEBUG(cycle,out).print("disabling seed mat: %d\n", id);
+            if (num_disabled_seed_types)
+                ++*num_disabled_seed_types;
+            Kitchen::denyPlantSeedCookery(id);
+        } else if (target + TARGET_BUFFER < accessible_counts[id]) {
+            DEBUG(cycle,out).print("enabling seed mat: %d\n", id);
+            if (num_enabled_seed_types)
+                ++*num_enabled_seed_types;
+            Kitchen::allowPlantSeedCookery(id);
+        }
+    }
+}
+
+/////////////////////////////////////////////////////
+// Lua API
+// core will already be suspended when coming in through here
+//
+
+static void set_target(color_ostream &out, int32_t id, int32_t target) {
+    if (target == 0)
+        remove_seed_config(out, id);
+    else {
+        PersistentDataItem &c = ensure_seed_config(out, id);
+        set_config_val(c, SEED_CONFIG_TARGET, target);
+    }
+}
+
+// searches abbreviations, returns expansion if so, returns original if not
+static string searchAbbreviations(string in) {
+    if(abbreviations.count(in) > 0)
+        return abbreviations[in];
+    return in;
+};
+
+static void seedwatch_setTarget(color_ostream &out, string name, int32_t num) {
+    DEBUG(config,out).print("entering seedwatch_setTarget\n");
+
+    if (num < 0) {
+        out.printerr("target must be at least 0\n");
+        return;
+    }
+
+    if (name == "all") {
+        for (auto &entry : world_plant_ids) {
+            set_target(out, entry.second, num);
+        }
+        return;
+    }
+
+    string token = searchAbbreviations(name);
+    if (!world_plant_ids.count(token)) {
+        out.printerr("%s has not been found as a material.\n", token.c_str());
+        return;
+    }
+
+    set_target(out, world_plant_ids[token], num);
+}
+
+static int seedwatch_getData(lua_State *L) {
+    color_ostream *out = Lua::GetOutput(L);
+    if (!out)
+        out = &Core::getInstance().getConsole();
+    DEBUG(config,*out).print("entering seedwatch_getData\n");
+    unordered_map<int32_t, int32_t> watch_map, accessible_counts;
+    scan_seeds(*out, &accessible_counts);
+    for (auto &entry : watched_seeds) {
+        watch_map.emplace(entry.first, get_config_val(entry.second, SEED_CONFIG_TARGET));
+    }
+    Lua::Push(L, watch_map);
+    Lua::Push(L, accessible_counts);
+    return 2;
+}
+
+DFHACK_PLUGIN_LUA_FUNCTIONS {
+    DFHACK_LUA_FUNCTION(seedwatch_setTarget),
+    DFHACK_LUA_END
+};
+
+DFHACK_PLUGIN_LUA_COMMANDS {
+    DFHACK_LUA_COMMAND(seedwatch_getData),
+    DFHACK_LUA_END
+};